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add other session providers (#5963)

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techknowlogick 2019-02-05 11:52:51 -05:00 committed by GitHub
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160 changed files with 37644 additions and 66 deletions
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111
Gopkg.lock generated
View file

@ -17,6 +17,14 @@
pruneopts = "NUT" pruneopts = "NUT"
revision = "d5a42771e7e851e8a89c5c6ffa0f5b075342f9df" revision = "d5a42771e7e851e8a89c5c6ffa0f5b075342f9df"
[[projects]]
digest = "1:5d72bbcc9c8667b11c3dc3cbe681c5a6f71e5096744c0bf7726ab5c6425d5dc4"
name = "github.com/BurntSushi/toml"
packages = ["."]
pruneopts = "NUT"
revision = "3012a1dbe2e4bd1391d42b32f0577cb7bbc7f005"
version = "v0.3.1"
[[projects]] [[projects]]
digest = "1:3fcef06a1a6561955c94af6c7757a6fa37605eb653f0d06ab960e5bb80092195" digest = "1:3fcef06a1a6561955c94af6c7757a6fa37605eb653f0d06ab960e5bb80092195"
name = "github.com/PuerkitoBio/goquery" name = "github.com/PuerkitoBio/goquery"
@ -185,6 +193,28 @@
pruneopts = "NUT" pruneopts = "NUT"
revision = "098da33fde5f9220736531b3cb26a2dec86a8367" revision = "098da33fde5f9220736531b3cb26a2dec86a8367"
[[projects]]
branch = "master"
digest = "1:eb205556fe75307c6d2b58d4159e7c2da23e2666481d352c66d4055bebf45a3c"
name = "github.com/couchbase/gomemcached"
packages = [
".",
"client",
]
pruneopts = "NUT"
revision = "5125a94a666c83cb9b7a60907833cd320b84c20f"
[[projects]]
branch = "master"
digest = "1:ea03e12e246f7708a7b7ab3ad04e96d21ce73f48bb56258bc2bffeed474212e6"
name = "github.com/couchbase/goutils"
packages = [
"logging",
"scramsha",
]
pruneopts = "NUT"
revision = "e865a1461c8ac0032bd37e2d4dab3289faea3873"
[[projects]] [[projects]]
branch = "master" branch = "master"
digest = "1:82e1ad11d777f7bff9a1fc678a8a534a318f85e5026a8a4d6f4a94a6b0678bb6" digest = "1:82e1ad11d777f7bff9a1fc678a8a534a318f85e5026a8a4d6f4a94a6b0678bb6"
@ -197,6 +227,14 @@
pruneopts = "NUT" pruneopts = "NUT"
revision = "eb6ae3743b3f300f2136f83ca78c08cc071edbd4" revision = "eb6ae3743b3f300f2136f83ca78c08cc071edbd4"
[[projects]]
branch = "master"
digest = "1:df592f4b82b993fcac270862376c34210776b8b0334a0f59f4d9d80467713ffa"
name = "github.com/couchbaselabs/go-couchbase"
packages = ["."]
pruneopts = "NUT"
revision = "d904413d884d1fb849e2ad8834619f661761ef57"
[[projects]] [[projects]]
digest = "1:a2c1d0e43bd3baaa071d1b9ed72c27d78169b2b269f71c105ac4ba34b1be4a39" digest = "1:a2c1d0e43bd3baaa071d1b9ed72c27d78169b2b269f71c105ac4ba34b1be4a39"
name = "github.com/davecgh/go-spew" name = "github.com/davecgh/go-spew"
@ -358,14 +396,19 @@
[[projects]] [[projects]]
branch = "master" branch = "master"
digest = "1:8fea5718d84af17762195beb6fe92a0d6c1048452a1dbc464d227f12e0cff0cc" digest = "1:a26b7b56aece087165b8db87afb05db8495252449553ca20d15f5a24202f36bc"
name = "github.com/go-macaron/session" name = "github.com/go-macaron/session"
packages = [ packages = [
".", ".",
"couchbase",
"memcache",
"mysql",
"nodb",
"postgres",
"redis", "redis",
] ]
pruneopts = "NUT" pruneopts = "NUT"
revision = "330e4e4d8beb7b00111ac34539561f46f94c4458" revision = "0a0a789bf1934e55fde19629869caa015a40c525"
[[projects]] [[projects]]
digest = "1:758d2371fcdee6d02565901b348729053c636055e67ef6e17aa466c7ff6cc57c" digest = "1:758d2371fcdee6d02565901b348729053c636055e67ef6e17aa466c7ff6cc57c"
@ -579,6 +622,28 @@
pruneopts = "NUT" pruneopts = "NUT"
revision = "e3534c89ef969912856dfa39e56b09e58c5f5daf" revision = "e3534c89ef969912856dfa39e56b09e58c5f5daf"
[[projects]]
digest = "1:1e6a29ed1f189354030e3371f63ec58aacbc2bf232fd104c6e0d41174ac5af48"
name = "github.com/lunny/log"
packages = ["."]
pruneopts = "NUT"
revision = "7887c61bf0de75586961948b286be6f7d05d9f58"
version = "v0.1"
[[projects]]
branch = "master"
digest = "1:683d835728cb95d176d423b522420eb5e4ec859b276bca18466476b82b3ebc4c"
name = "github.com/lunny/nodb"
packages = [
".",
"config",
"store",
"store/driver",
"store/goleveldb",
]
pruneopts = "NUT"
revision = "fc1ef06ad4af0da31cdb87e3fa5ec084c67e6597"
[[projects]] [[projects]]
digest = "1:aa7dcd6a0db70d514821f8739d0a22e7df33b499d8d399cf15b2858d44f8319e" digest = "1:aa7dcd6a0db70d514821f8739d0a22e7df33b499d8d399cf15b2858d44f8319e"
name = "github.com/markbates/goth" name = "github.com/markbates/goth"
@ -682,6 +747,14 @@
revision = "bb6d471dc95d4fe11e432687f8b70ff496cf3136" revision = "bb6d471dc95d4fe11e432687f8b70ff496cf3136"
version = "v1.0.0" version = "v1.0.0"
[[projects]]
digest = "1:14715f705ff5dfe0ffd6571d7d201dd8e921030f8070321a79380d8ca4ec1a24"
name = "github.com/pkg/errors"
packages = ["."]
pruneopts = "NUT"
revision = "ba968bfe8b2f7e042a574c888954fccecfa385b4"
version = "v0.8.1"
[[projects]] [[projects]]
digest = "1:0028cb19b2e4c3112225cd871870f2d9cf49b9b4276531f03438a88e94be86fe" digest = "1:0028cb19b2e4c3112225cd871870f2d9cf49b9b4276531f03438a88e94be86fe"
name = "github.com/pmezard/go-difflib" name = "github.com/pmezard/go-difflib"
@ -775,6 +848,14 @@
pruneopts = "NUT" pruneopts = "NUT"
revision = "1dba4b3954bc059efc3991ec364f9f9a35f597d2" revision = "1dba4b3954bc059efc3991ec364f9f9a35f597d2"
[[projects]]
branch = "master"
digest = "1:dbda803f21e60c38de7d9f884390f2ebbe234ce0c3d139b65bbb36b03a99d266"
name = "github.com/siddontang/go-snappy"
packages = ["snappy"]
pruneopts = "NUT"
revision = "d8f7bb82a96d89c1254e5a6c967134e1433c9ee2"
[[projects]] [[projects]]
digest = "1:89fd77d603a74a6540d60067debad9397865bf040955d907362c95d364baeba6" digest = "1:89fd77d603a74a6540d60067debad9397865bf040955d907362c95d364baeba6"
name = "github.com/src-d/gcfg" name = "github.com/src-d/gcfg"
@ -804,6 +885,27 @@
revision = "12b6f73e6084dad08a7c6e575284b177ecafbc71" revision = "12b6f73e6084dad08a7c6e575284b177ecafbc71"
version = "v1.2.1" version = "v1.2.1"
[[projects]]
branch = "master"
digest = "1:685fdfea42d825ebd39ee0994354b46c374cf2c2b2d97a41a8dee1807c6a9b62"
name = "github.com/syndtr/goleveldb"
packages = [
"leveldb",
"leveldb/cache",
"leveldb/comparer",
"leveldb/errors",
"leveldb/filter",
"leveldb/iterator",
"leveldb/journal",
"leveldb/memdb",
"leveldb/opt",
"leveldb/storage",
"leveldb/table",
"leveldb/util",
]
pruneopts = "NUT"
revision = "2f17a3356c6616cbfc4ae4c38147dc062a68fb0e"
[[projects]] [[projects]]
branch = "master" branch = "master"
digest = "1:3cb6dfe7cdece5716b1c3c3c0b5faf7fce2e83e2758e2baad2e9986d101980b8" digest = "1:3cb6dfe7cdece5716b1c3c3c0b5faf7fce2e83e2758e2baad2e9986d101980b8"
@ -1150,6 +1252,11 @@
"github.com/go-macaron/i18n", "github.com/go-macaron/i18n",
"github.com/go-macaron/inject", "github.com/go-macaron/inject",
"github.com/go-macaron/session", "github.com/go-macaron/session",
"github.com/go-macaron/session/couchbase",
"github.com/go-macaron/session/memcache",
"github.com/go-macaron/session/mysql",
"github.com/go-macaron/session/nodb",
"github.com/go-macaron/session/postgres",
"github.com/go-macaron/session/redis", "github.com/go-macaron/session/redis",
"github.com/go-macaron/toolbox", "github.com/go-macaron/toolbox",
"github.com/go-sql-driver/mysql", "github.com/go-sql-driver/mysql",

2
docs/content/doc/advanced/config-cheat-sheet.en-us.md
View file

@ -250,7 +250,7 @@ Values containing `#` or `;` must be quoted using `` ` `` or `"""`.
## Session (`session`) ## Session (`session`)
- `PROVIDER`: **memory**: Session engine provider \[memory, file, redis, mysql\]. - `PROVIDER`: **memory**: Session engine provider \[memory, file, redis, mysql, couchbase, memcache, nodb, postgres\].
- `PROVIDER_CONFIG`: **data/sessions**: For file, the root path; for others, the connection string. - `PROVIDER_CONFIG`: **data/sessions**: For file, the root path; for others, the connection string.
- `COOKIE_SECURE`: **false**: Enable this to force using HTTPS for all session access. - `COOKIE_SECURE`: **false**: Enable this to force using HTTPS for all session access.
- `COOKIE_NAME`: **i\_like\_gitea**: The name of the cookie used for the session ID. - `COOKIE_NAME`: **i\_like\_gitea**: The name of the cookie used for the session ID.

7
modules/setting/setting.go
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@ -31,6 +31,11 @@ import (
_ "github.com/go-macaron/cache/memcache" // memcache plugin for cache _ "github.com/go-macaron/cache/memcache" // memcache plugin for cache
_ "github.com/go-macaron/cache/redis" _ "github.com/go-macaron/cache/redis"
"github.com/go-macaron/session" "github.com/go-macaron/session"
_ "github.com/go-macaron/session/couchbase" // couchbase plugin for session store
_ "github.com/go-macaron/session/memcache" // memcache plugin for session store
_ "github.com/go-macaron/session/mysql" // mysql plugin for session store
_ "github.com/go-macaron/session/nodb" // nodb plugin for session store
_ "github.com/go-macaron/session/postgres" // postgres plugin for session store
_ "github.com/go-macaron/session/redis" // redis plugin for store session _ "github.com/go-macaron/session/redis" // redis plugin for store session
"github.com/go-xorm/core" "github.com/go-xorm/core"
shellquote "github.com/kballard/go-shellquote" shellquote "github.com/kballard/go-shellquote"
@ -1506,7 +1511,7 @@ func newCacheService() {
func newSessionService() { func newSessionService() {
SessionConfig.Provider = Cfg.Section("session").Key("PROVIDER").In("memory", SessionConfig.Provider = Cfg.Section("session").Key("PROVIDER").In("memory",
[]string{"memory", "file", "redis", "mysql"}) []string{"memory", "file", "redis", "mysql", "postgres", "couchbase", "memcache", "nodb"})
SessionConfig.ProviderConfig = strings.Trim(Cfg.Section("session").Key("PROVIDER_CONFIG").MustString(path.Join(AppDataPath, "sessions")), "\" ") SessionConfig.ProviderConfig = strings.Trim(Cfg.Section("session").Key("PROVIDER_CONFIG").MustString(path.Join(AppDataPath, "sessions")), "\" ")
if SessionConfig.Provider == "file" && !filepath.IsAbs(SessionConfig.ProviderConfig) { if SessionConfig.Provider == "file" && !filepath.IsAbs(SessionConfig.ProviderConfig) {
SessionConfig.ProviderConfig = path.Join(AppWorkPath, SessionConfig.ProviderConfig) SessionConfig.ProviderConfig = path.Join(AppWorkPath, SessionConfig.ProviderConfig)

21
vendor/github.com/BurntSushi/toml/COPYING generated vendored Normal file
View file

@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) 2013 TOML authors
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

21
vendor/github.com/BurntSushi/toml/cmd/toml-test-decoder/COPYING generated vendored Normal file
View file

@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) 2013 TOML authors
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

21
vendor/github.com/BurntSushi/toml/cmd/toml-test-encoder/COPYING generated vendored Normal file
View file

@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) 2013 TOML authors
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

21
vendor/github.com/BurntSushi/toml/cmd/tomlv/COPYING generated vendored Normal file
View file

@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) 2013 TOML authors
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

509
vendor/github.com/BurntSushi/toml/decode.go generated vendored Normal file
View file

@ -0,0 +1,509 @@
package toml
import (
"fmt"
"io"
"io/ioutil"
"math"
"reflect"
"strings"
"time"
)
func e(format string, args ...interface{}) error {
return fmt.Errorf("toml: "+format, args...)
}
// Unmarshaler is the interface implemented by objects that can unmarshal a
// TOML description of themselves.
type Unmarshaler interface {
UnmarshalTOML(interface{}) error
}
// Unmarshal decodes the contents of `p` in TOML format into a pointer `v`.
func Unmarshal(p []byte, v interface{}) error {
_, err := Decode(string(p), v)
return err
}
// Primitive is a TOML value that hasn't been decoded into a Go value.
// When using the various `Decode*` functions, the type `Primitive` may
// be given to any value, and its decoding will be delayed.
//
// A `Primitive` value can be decoded using the `PrimitiveDecode` function.
//
// The underlying representation of a `Primitive` value is subject to change.
// Do not rely on it.
//
// N.B. Primitive values are still parsed, so using them will only avoid
// the overhead of reflection. They can be useful when you don't know the
// exact type of TOML data until run time.
type Primitive struct {
undecoded interface{}
context Key
}
// DEPRECATED!
//
// Use MetaData.PrimitiveDecode instead.
func PrimitiveDecode(primValue Primitive, v interface{}) error {
md := MetaData{decoded: make(map[string]bool)}
return md.unify(primValue.undecoded, rvalue(v))
}
// PrimitiveDecode is just like the other `Decode*` functions, except it
// decodes a TOML value that has already been parsed. Valid primitive values
// can *only* be obtained from values filled by the decoder functions,
// including this method. (i.e., `v` may contain more `Primitive`
// values.)
//
// Meta data for primitive values is included in the meta data returned by
// the `Decode*` functions with one exception: keys returned by the Undecoded
// method will only reflect keys that were decoded. Namely, any keys hidden
// behind a Primitive will be considered undecoded. Executing this method will
// update the undecoded keys in the meta data. (See the example.)
func (md *MetaData) PrimitiveDecode(primValue Primitive, v interface{}) error {
md.context = primValue.context
defer func() { md.context = nil }()
return md.unify(primValue.undecoded, rvalue(v))
}
// Decode will decode the contents of `data` in TOML format into a pointer
// `v`.
//
// TOML hashes correspond to Go structs or maps. (Dealer's choice. They can be
// used interchangeably.)
//
// TOML arrays of tables correspond to either a slice of structs or a slice
// of maps.
//
// TOML datetimes correspond to Go `time.Time` values.
//
// All other TOML types (float, string, int, bool and array) correspond
// to the obvious Go types.
//
// An exception to the above rules is if a type implements the
// encoding.TextUnmarshaler interface. In this case, any primitive TOML value
// (floats, strings, integers, booleans and datetimes) will be converted to
// a byte string and given to the value's UnmarshalText method. See the
// Unmarshaler example for a demonstration with time duration strings.
//
// Key mapping
//
// TOML keys can map to either keys in a Go map or field names in a Go
// struct. The special `toml` struct tag may be used to map TOML keys to
// struct fields that don't match the key name exactly. (See the example.)
// A case insensitive match to struct names will be tried if an exact match
// can't be found.
//
// The mapping between TOML values and Go values is loose. That is, there
// may exist TOML values that cannot be placed into your representation, and
// there may be parts of your representation that do not correspond to
// TOML values. This loose mapping can be made stricter by using the IsDefined
// and/or Undecoded methods on the MetaData returned.
//
// This decoder will not handle cyclic types. If a cyclic type is passed,
// `Decode` will not terminate.
func Decode(data string, v interface{}) (MetaData, error) {
rv := reflect.ValueOf(v)
if rv.Kind() != reflect.Ptr {
return MetaData{}, e("Decode of non-pointer %s", reflect.TypeOf(v))
}
if rv.IsNil() {
return MetaData{}, e("Decode of nil %s", reflect.TypeOf(v))
}
p, err := parse(data)
if err != nil {
return MetaData{}, err
}
md := MetaData{
p.mapping, p.types, p.ordered,
make(map[string]bool, len(p.ordered)), nil,
}
return md, md.unify(p.mapping, indirect(rv))
}
// DecodeFile is just like Decode, except it will automatically read the
// contents of the file at `fpath` and decode it for you.
func DecodeFile(fpath string, v interface{}) (MetaData, error) {
bs, err := ioutil.ReadFile(fpath)
if err != nil {
return MetaData{}, err
}
return Decode(string(bs), v)
}
// DecodeReader is just like Decode, except it will consume all bytes
// from the reader and decode it for you.
func DecodeReader(r io.Reader, v interface{}) (MetaData, error) {
bs, err := ioutil.ReadAll(r)
if err != nil {
return MetaData{}, err
}
return Decode(string(bs), v)
}
// unify performs a sort of type unification based on the structure of `rv`,
// which is the client representation.
//
// Any type mismatch produces an error. Finding a type that we don't know
// how to handle produces an unsupported type error.
func (md *MetaData) unify(data interface{}, rv reflect.Value) error {
// Special case. Look for a `Primitive` value.
if rv.Type() == reflect.TypeOf((*Primitive)(nil)).Elem() {
// Save the undecoded data and the key context into the primitive
// value.
context := make(Key, len(md.context))
copy(context, md.context)
rv.Set(reflect.ValueOf(Primitive{
undecoded: data,
context: context,
}))
return nil
}
// Special case. Unmarshaler Interface support.
if rv.CanAddr() {
if v, ok := rv.Addr().Interface().(Unmarshaler); ok {
return v.UnmarshalTOML(data)
}
}
// Special case. Handle time.Time values specifically.
// TODO: Remove this code when we decide to drop support for Go 1.1.
// This isn't necessary in Go 1.2 because time.Time satisfies the encoding
// interfaces.
if rv.Type().AssignableTo(rvalue(time.Time{}).Type()) {
return md.unifyDatetime(data, rv)
}
// Special case. Look for a value satisfying the TextUnmarshaler interface.
if v, ok := rv.Interface().(TextUnmarshaler); ok {
return md.unifyText(data, v)
}
// BUG(burntsushi)
// The behavior here is incorrect whenever a Go type satisfies the
// encoding.TextUnmarshaler interface but also corresponds to a TOML
// hash or array. In particular, the unmarshaler should only be applied
// to primitive TOML values. But at this point, it will be applied to
// all kinds of values and produce an incorrect error whenever those values
// are hashes or arrays (including arrays of tables).
k := rv.Kind()
// laziness
if k >= reflect.Int && k <= reflect.Uint64 {
return md.unifyInt(data, rv)
}
switch k {
case reflect.Ptr:
elem := reflect.New(rv.Type().Elem())
err := md.unify(data, reflect.Indirect(elem))
if err != nil {
return err
}
rv.Set(elem)
return nil
case reflect.Struct:
return md.unifyStruct(data, rv)
case reflect.Map:
return md.unifyMap(data, rv)
case reflect.Array:
return md.unifyArray(data, rv)
case reflect.Slice:
return md.unifySlice(data, rv)
case reflect.String:
return md.unifyString(data, rv)
case reflect.Bool:
return md.unifyBool(data, rv)
case reflect.Interface:
// we only support empty interfaces.
if rv.NumMethod() > 0 {
return e("unsupported type %s", rv.Type())
}
return md.unifyAnything(data, rv)
case reflect.Float32:
fallthrough
case reflect.Float64:
return md.unifyFloat64(data, rv)
}
return e("unsupported type %s", rv.Kind())
}
func (md *MetaData) unifyStruct(mapping interface{}, rv reflect.Value) error {
tmap, ok := mapping.(map[string]interface{})
if !ok {
if mapping == nil {
return nil
}
return e("type mismatch for %s: expected table but found %T",
rv.Type().String(), mapping)
}
for key, datum := range tmap {
var f *field
fields := cachedTypeFields(rv.Type())
for i := range fields {
ff := &fields[i]
if ff.name == key {
f = ff
break
}
if f == nil && strings.EqualFold(ff.name, key) {
f = ff
}
}
if f != nil {
subv := rv
for _, i := range f.index {
subv = indirect(subv.Field(i))
}
if isUnifiable(subv) {
md.decoded[md.context.add(key).String()] = true
md.context = append(md.context, key)
if err := md.unify(datum, subv); err != nil {
return err
}
md.context = md.context[0 : len(md.context)-1]
} else if f.name != "" {
// Bad user! No soup for you!
return e("cannot write unexported field %s.%s",
rv.Type().String(), f.name)
}
}
}
return nil
}
func (md *MetaData) unifyMap(mapping interface{}, rv reflect.Value) error {
tmap, ok := mapping.(map[string]interface{})
if !ok {
if tmap == nil {
return nil
}
return badtype("map", mapping)
}
if rv.IsNil() {
rv.Set(reflect.MakeMap(rv.Type()))
}
for k, v := range tmap {
md.decoded[md.context.add(k).String()] = true
md.context = append(md.context, k)
rvkey := indirect(reflect.New(rv.Type().Key()))
rvval := reflect.Indirect(reflect.New(rv.Type().Elem()))
if err := md.unify(v, rvval); err != nil {
return err
}
md.context = md.context[0 : len(md.context)-1]
rvkey.SetString(k)
rv.SetMapIndex(rvkey, rvval)
}
return nil
}
func (md *MetaData) unifyArray(data interface{}, rv reflect.Value) error {
datav := reflect.ValueOf(data)
if datav.Kind() != reflect.Slice {
if !datav.IsValid() {
return nil
}
return badtype("slice", data)
}
sliceLen := datav.Len()
if sliceLen != rv.Len() {
return e("expected array length %d; got TOML array of length %d",
rv.Len(), sliceLen)
}
return md.unifySliceArray(datav, rv)
}
func (md *MetaData) unifySlice(data interface{}, rv reflect.Value) error {
datav := reflect.ValueOf(data)
if datav.Kind() != reflect.Slice {
if !datav.IsValid() {
return nil
}
return badtype("slice", data)
}
n := datav.Len()
if rv.IsNil() || rv.Cap() < n {
rv.Set(reflect.MakeSlice(rv.Type(), n, n))
}
rv.SetLen(n)
return md.unifySliceArray(datav, rv)
}
func (md *MetaData) unifySliceArray(data, rv reflect.Value) error {
sliceLen := data.Len()
for i := 0; i < sliceLen; i++ {
v := data.Index(i).Interface()
sliceval := indirect(rv.Index(i))
if err := md.unify(v, sliceval); err != nil {
return err
}
}
return nil
}
func (md *MetaData) unifyDatetime(data interface{}, rv reflect.Value) error {
if _, ok := data.(time.Time); ok {
rv.Set(reflect.ValueOf(data))
return nil
}
return badtype("time.Time", data)
}
func (md *MetaData) unifyString(data interface{}, rv reflect.Value) error {
if s, ok := data.(string); ok {
rv.SetString(s)
return nil
}
return badtype("string", data)
}
func (md *MetaData) unifyFloat64(data interface{}, rv reflect.Value) error {
if num, ok := data.(float64); ok {
switch rv.Kind() {
case reflect.Float32:
fallthrough
case reflect.Float64:
rv.SetFloat(num)
default:
panic("bug")
}
return nil
}
return badtype("float", data)
}
func (md *MetaData) unifyInt(data interface{}, rv reflect.Value) error {
if num, ok := data.(int64); ok {
if rv.Kind() >= reflect.Int && rv.Kind() <= reflect.Int64 {
switch rv.Kind() {
case reflect.Int, reflect.Int64:
// No bounds checking necessary.
case reflect.Int8:
if num < math.MinInt8 || num > math.MaxInt8 {
return e("value %d is out of range for int8", num)
}
case reflect.Int16:
if num < math.MinInt16 || num > math.MaxInt16 {
return e("value %d is out of range for int16", num)
}
case reflect.Int32:
if num < math.MinInt32 || num > math.MaxInt32 {
return e("value %d is out of range for int32", num)
}
}
rv.SetInt(num)
} else if rv.Kind() >= reflect.Uint && rv.Kind() <= reflect.Uint64 {
unum := uint64(num)
switch rv.Kind() {
case reflect.Uint, reflect.Uint64:
// No bounds checking necessary.
case reflect.Uint8:
if num < 0 || unum > math.MaxUint8 {
return e("value %d is out of range for uint8", num)
}
case reflect.Uint16:
if num < 0 || unum > math.MaxUint16 {
return e("value %d is out of range for uint16", num)
}
case reflect.Uint32:
if num < 0 || unum > math.MaxUint32 {
return e("value %d is out of range for uint32", num)
}
}
rv.SetUint(unum)
} else {
panic("unreachable")
}
return nil
}
return badtype("integer", data)
}
func (md *MetaData) unifyBool(data interface{}, rv reflect.Value) error {
if b, ok := data.(bool); ok {
rv.SetBool(b)
return nil
}
return badtype("boolean", data)
}
func (md *MetaData) unifyAnything(data interface{}, rv reflect.Value) error {
rv.Set(reflect.ValueOf(data))
return nil
}
func (md *MetaData) unifyText(data interface{}, v TextUnmarshaler) error {
var s string
switch sdata := data.(type) {
case TextMarshaler:
text, err := sdata.MarshalText()
if err != nil {
return err
}
s = string(text)
case fmt.Stringer:
s = sdata.String()
case string:
s = sdata
case bool:
s = fmt.Sprintf("%v", sdata)
case int64:
s = fmt.Sprintf("%d", sdata)
case float64:
s = fmt.Sprintf("%f", sdata)
default:
return badtype("primitive (string-like)", data)
}
if err := v.UnmarshalText([]byte(s)); err != nil {
return err
}
return nil
}
// rvalue returns a reflect.Value of `v`. All pointers are resolved.
func rvalue(v interface{}) reflect.Value {
return indirect(reflect.ValueOf(v))
}
// indirect returns the value pointed to by a pointer.
// Pointers are followed until the value is not a pointer.
// New values are allocated for each nil pointer.
//
// An exception to this rule is if the value satisfies an interface of
// interest to us (like encoding.TextUnmarshaler).
func indirect(v reflect.Value) reflect.Value {
if v.Kind() != reflect.Ptr {
if v.CanSet() {
pv := v.Addr()
if _, ok := pv.Interface().(TextUnmarshaler); ok {
return pv
}
}
return v
}
if v.IsNil() {
v.Set(reflect.New(v.Type().Elem()))
}
return indirect(reflect.Indirect(v))
}
func isUnifiable(rv reflect.Value) bool {
if rv.CanSet() {
return true
}
if _, ok := rv.Interface().(TextUnmarshaler); ok {
return true
}
return false
}
func badtype(expected string, data interface{}) error {
return e("cannot load TOML value of type %T into a Go %s", data, expected)
}

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package toml
import "strings"
// MetaData allows access to meta information about TOML data that may not
// be inferrable via reflection. In particular, whether a key has been defined
// and the TOML type of a key.
type MetaData struct {
mapping map[string]interface{}
types map[string]tomlType
keys []Key
decoded map[string]bool
context Key // Used only during decoding.
}
// IsDefined returns true if the key given exists in the TOML data. The key
// should be specified hierarchially. e.g.,
//
// // access the TOML key 'a.b.c'
// IsDefined("a", "b", "c")
//
// IsDefined will return false if an empty key given. Keys are case sensitive.
func (md *MetaData) IsDefined(key ...string) bool {
if len(key) == 0 {
return false
}
var hash map[string]interface{}
var ok bool
var hashOrVal interface{} = md.mapping
for _, k := range key {
if hash, ok = hashOrVal.(map[string]interface{}); !ok {
return false
}
if hashOrVal, ok = hash[k]; !ok {
return false
}
}
return true
}
// Type returns a string representation of the type of the key specified.
//
// Type will return the empty string if given an empty key or a key that
// does not exist. Keys are case sensitive.
func (md *MetaData) Type(key ...string) string {
fullkey := strings.Join(key, ".")
if typ, ok := md.types[fullkey]; ok {
return typ.typeString()
}
return ""
}
// Key is the type of any TOML key, including key groups. Use (MetaData).Keys
// to get values of this type.
type Key []string
func (k Key) String() string {
return strings.Join(k, ".")
}
func (k Key) maybeQuotedAll() string {
var ss []string
for i := range k {
ss = append(ss, k.maybeQuoted(i))
}
return strings.Join(ss, ".")
}
func (k Key) maybeQuoted(i int) string {
quote := false
for _, c := range k[i] {
if !isBareKeyChar(c) {
quote = true
break
}
}
if quote {
return "\"" + strings.Replace(k[i], "\"", "\\\"", -1) + "\""
}
return k[i]
}
func (k Key) add(piece string) Key {
newKey := make(Key, len(k)+1)
copy(newKey, k)
newKey[len(k)] = piece
return newKey
}
// Keys returns a slice of every key in the TOML data, including key groups.
// Each key is itself a slice, where the first element is the top of the
// hierarchy and the last is the most specific.
//
// The list will have the same order as the keys appeared in the TOML data.
//
// All keys returned are non-empty.
func (md *MetaData) Keys() []Key {
return md.keys
}
// Undecoded returns all keys that have not been decoded in the order in which
// they appear in the original TOML document.
//
// This includes keys that haven't been decoded because of a Primitive value.
// Once the Primitive value is decoded, the keys will be considered decoded.
//
// Also note that decoding into an empty interface will result in no decoding,
// and so no keys will be considered decoded.
//
// In this sense, the Undecoded keys correspond to keys in the TOML document
// that do not have a concrete type in your representation.
func (md *MetaData) Undecoded() []Key {
undecoded := make([]Key, 0, len(md.keys))
for _, key := range md.keys {
if !md.decoded[key.String()] {
undecoded = append(undecoded, key)
}
}
return undecoded
}

27
vendor/github.com/BurntSushi/toml/doc.go generated vendored Normal file
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/*
Package toml provides facilities for decoding and encoding TOML configuration
files via reflection. There is also support for delaying decoding with
the Primitive type, and querying the set of keys in a TOML document with the
MetaData type.
The specification implemented: https://github.com/toml-lang/toml
The sub-command github.com/BurntSushi/toml/cmd/tomlv can be used to verify
whether a file is a valid TOML document. It can also be used to print the
type of each key in a TOML document.
Testing
There are two important types of tests used for this package. The first is
contained inside '*_test.go' files and uses the standard Go unit testing
framework. These tests are primarily devoted to holistically testing the
decoder and encoder.
The second type of testing is used to verify the implementation's adherence
to the TOML specification. These tests have been factored into their own
project: https://github.com/BurntSushi/toml-test
The reason the tests are in a separate project is so that they can be used by
any implementation of TOML. Namely, it is language agnostic.
*/
package toml

568
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package toml
import (
"bufio"
"errors"
"fmt"
"io"
"reflect"
"sort"
"strconv"
"strings"
"time"
)
type tomlEncodeError struct{ error }
var (
errArrayMixedElementTypes = errors.New(
"toml: cannot encode array with mixed element types")
errArrayNilElement = errors.New(
"toml: cannot encode array with nil element")
errNonString = errors.New(
"toml: cannot encode a map with non-string key type")
errAnonNonStruct = errors.New(
"toml: cannot encode an anonymous field that is not a struct")
errArrayNoTable = errors.New(
"toml: TOML array element cannot contain a table")
errNoKey = errors.New(
"toml: top-level values must be Go maps or structs")
errAnything = errors.New("") // used in testing
)
var quotedReplacer = strings.NewReplacer(
"\t", "\\t",
"\n", "\\n",
"\r", "\\r",
"\"", "\\\"",
"\\", "\\\\",
)
// Encoder controls the encoding of Go values to a TOML document to some
// io.Writer.
//
// The indentation level can be controlled with the Indent field.
type Encoder struct {
// A single indentation level. By default it is two spaces.
Indent string
// hasWritten is whether we have written any output to w yet.
hasWritten bool
w *bufio.Writer
}
// NewEncoder returns a TOML encoder that encodes Go values to the io.Writer
// given. By default, a single indentation level is 2 spaces.
func NewEncoder(w io.Writer) *Encoder {
return &Encoder{
w: bufio.NewWriter(w),
Indent: " ",
}
}
// Encode writes a TOML representation of the Go value to the underlying
// io.Writer. If the value given cannot be encoded to a valid TOML document,
// then an error is returned.
//
// The mapping between Go values and TOML values should be precisely the same
// as for the Decode* functions. Similarly, the TextMarshaler interface is
// supported by encoding the resulting bytes as strings. (If you want to write
// arbitrary binary data then you will need to use something like base64 since
// TOML does not have any binary types.)
//
// When encoding TOML hashes (i.e., Go maps or structs), keys without any
// sub-hashes are encoded first.
//
// If a Go map is encoded, then its keys are sorted alphabetically for
// deterministic output. More control over this behavior may be provided if
// there is demand for it.
//
// Encoding Go values without a corresponding TOML representation---like map
// types with non-string keys---will cause an error to be returned. Similarly
// for mixed arrays/slices, arrays/slices with nil elements, embedded
// non-struct types and nested slices containing maps or structs.
// (e.g., [][]map[string]string is not allowed but []map[string]string is OK
// and so is []map[string][]string.)
func (enc *Encoder) Encode(v interface{}) error {
rv := eindirect(reflect.ValueOf(v))
if err := enc.safeEncode(Key([]string{}), rv); err != nil {
return err
}
return enc.w.Flush()
}
func (enc *Encoder) safeEncode(key Key, rv reflect.Value) (err error) {
defer func() {
if r := recover(); r != nil {
if terr, ok := r.(tomlEncodeError); ok {
err = terr.error
return
}
panic(r)
}
}()
enc.encode(key, rv)
return nil
}
func (enc *Encoder) encode(key Key, rv reflect.Value) {
// Special case. Time needs to be in ISO8601 format.
// Special case. If we can marshal the type to text, then we used that.
// Basically, this prevents the encoder for handling these types as
// generic structs (or whatever the underlying type of a TextMarshaler is).
switch rv.Interface().(type) {
case time.Time, TextMarshaler:
enc.keyEqElement(key, rv)
return
}
k := rv.Kind()
switch k {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32,
reflect.Int64,
reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32,
reflect.Uint64,
reflect.Float32, reflect.Float64, reflect.String, reflect.Bool:
enc.keyEqElement(key, rv)
case reflect.Array, reflect.Slice:
if typeEqual(tomlArrayHash, tomlTypeOfGo(rv)) {
enc.eArrayOfTables(key, rv)
} else {
enc.keyEqElement(key, rv)
}
case reflect.Interface:
if rv.IsNil() {
return
}
enc.encode(key, rv.Elem())
case reflect.Map:
if rv.IsNil() {
return
}
enc.eTable(key, rv)
case reflect.Ptr:
if rv.IsNil() {
return
}
enc.encode(key, rv.Elem())
case reflect.Struct:
enc.eTable(key, rv)
default:
panic(e("unsupported type for key '%s': %s", key, k))
}
}
// eElement encodes any value that can be an array element (primitives and
// arrays).
func (enc *Encoder) eElement(rv reflect.Value) {
switch v := rv.Interface().(type) {
case time.Time:
// Special case time.Time as a primitive. Has to come before
// TextMarshaler below because time.Time implements
// encoding.TextMarshaler, but we need to always use UTC.
enc.wf(v.UTC().Format("2006-01-02T15:04:05Z"))
return
case TextMarshaler:
// Special case. Use text marshaler if it's available for this value.
if s, err := v.MarshalText(); err != nil {
encPanic(err)
} else {
enc.writeQuoted(string(s))
}
return
}
switch rv.Kind() {
case reflect.Bool:
enc.wf(strconv.FormatBool(rv.Bool()))
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32,
reflect.Int64:
enc.wf(strconv.FormatInt(rv.Int(), 10))
case reflect.Uint, reflect.Uint8, reflect.Uint16,
reflect.Uint32, reflect.Uint64:
enc.wf(strconv.FormatUint(rv.Uint(), 10))
case reflect.Float32:
enc.wf(floatAddDecimal(strconv.FormatFloat(rv.Float(), 'f', -1, 32)))
case reflect.Float64:
enc.wf(floatAddDecimal(strconv.FormatFloat(rv.Float(), 'f', -1, 64)))
case reflect.Array, reflect.Slice:
enc.eArrayOrSliceElement(rv)
case reflect.Interface:
enc.eElement(rv.Elem())
case reflect.String:
enc.writeQuoted(rv.String())
default:
panic(e("unexpected primitive type: %s", rv.Kind()))
}
}
// By the TOML spec, all floats must have a decimal with at least one
// number on either side.
func floatAddDecimal(fstr string) string {
if !strings.Contains(fstr, ".") {
return fstr + ".0"
}
return fstr
}
func (enc *Encoder) writeQuoted(s string) {
enc.wf("\"%s\"", quotedReplacer.Replace(s))
}
func (enc *Encoder) eArrayOrSliceElement(rv reflect.Value) {
length := rv.Len()
enc.wf("[")
for i := 0; i < length; i++ {
elem := rv.Index(i)
enc.eElement(elem)
if i != length-1 {
enc.wf(", ")
}
}
enc.wf("]")
}
func (enc *Encoder) eArrayOfTables(key Key, rv reflect.Value) {
if len(key) == 0 {
encPanic(errNoKey)
}
for i := 0; i < rv.Len(); i++ {
trv := rv.Index(i)
if isNil(trv) {
continue
}
panicIfInvalidKey(key)
enc.newline()
enc.wf("%s[[%s]]", enc.indentStr(key), key.maybeQuotedAll())
enc.newline()
enc.eMapOrStruct(key, trv)
}
}
func (enc *Encoder) eTable(key Key, rv reflect.Value) {
panicIfInvalidKey(key)
if len(key) == 1 {
// Output an extra newline between top-level tables.
// (The newline isn't written if nothing else has been written though.)
enc.newline()
}
if len(key) > 0 {
enc.wf("%s[%s]", enc.indentStr(key), key.maybeQuotedAll())
enc.newline()
}
enc.eMapOrStruct(key, rv)
}
func (enc *Encoder) eMapOrStruct(key Key, rv reflect.Value) {
switch rv := eindirect(rv); rv.Kind() {
case reflect.Map:
enc.eMap(key, rv)
case reflect.Struct:
enc.eStruct(key, rv)
default:
panic("eTable: unhandled reflect.Value Kind: " + rv.Kind().String())
}
}
func (enc *Encoder) eMap(key Key, rv reflect.Value) {
rt := rv.Type()
if rt.Key().Kind() != reflect.String {
encPanic(errNonString)
}
// Sort keys so that we have deterministic output. And write keys directly
// underneath this key first, before writing sub-structs or sub-maps.
var mapKeysDirect, mapKeysSub []string
for _, mapKey := range rv.MapKeys() {
k := mapKey.String()
if typeIsHash(tomlTypeOfGo(rv.MapIndex(mapKey))) {
mapKeysSub = append(mapKeysSub, k)
} else {
mapKeysDirect = append(mapKeysDirect, k)
}
}
var writeMapKeys = func(mapKeys []string) {
sort.Strings(mapKeys)
for _, mapKey := range mapKeys {
mrv := rv.MapIndex(reflect.ValueOf(mapKey))
if isNil(mrv) {
// Don't write anything for nil fields.
continue
}
enc.encode(key.add(mapKey), mrv)
}
}
writeMapKeys(mapKeysDirect)
writeMapKeys(mapKeysSub)
}
func (enc *Encoder) eStruct(key Key, rv reflect.Value) {
// Write keys for fields directly under this key first, because if we write
// a field that creates a new table, then all keys under it will be in that
// table (not the one we're writing here).
rt := rv.Type()
var fieldsDirect, fieldsSub [][]int
var addFields func(rt reflect.Type, rv reflect.Value, start []int)
addFields = func(rt reflect.Type, rv reflect.Value, start []int) {
for i := 0; i < rt.NumField(); i++ {
f := rt.Field(i)
// skip unexported fields
if f.PkgPath != "" && !f.Anonymous {
continue
}
frv := rv.Field(i)
if f.Anonymous {
t := f.Type
switch t.Kind() {
case reflect.Struct:
// Treat anonymous struct fields with
// tag names as though they are not
// anonymous, like encoding/json does.
if getOptions(f.Tag).name == "" {
addFields(t, frv, f.Index)
continue
}
case reflect.Ptr:
if t.Elem().Kind() == reflect.Struct &&
getOptions(f.Tag).name == "" {
if !frv.IsNil() {
addFields(t.Elem(), frv.Elem(), f.Index)
}
continue
}
// Fall through to the normal field encoding logic below
// for non-struct anonymous fields.
}
}
if typeIsHash(tomlTypeOfGo(frv)) {
fieldsSub = append(fieldsSub, append(start, f.Index...))
} else {
fieldsDirect = append(fieldsDirect, append(start, f.Index...))
}
}
}
addFields(rt, rv, nil)
var writeFields = func(fields [][]int) {
for _, fieldIndex := range fields {
sft := rt.FieldByIndex(fieldIndex)
sf := rv.FieldByIndex(fieldIndex)
if isNil(sf) {
// Don't write anything for nil fields.
continue
}
opts := getOptions(sft.Tag)
if opts.skip {
continue
}
keyName := sft.Name
if opts.name != "" {
keyName = opts.name
}
if opts.omitempty && isEmpty(sf) {
continue
}
if opts.omitzero && isZero(sf) {
continue
}
enc.encode(key.add(keyName), sf)
}
}
writeFields(fieldsDirect)
writeFields(fieldsSub)
}
// tomlTypeName returns the TOML type name of the Go value's type. It is
// used to determine whether the types of array elements are mixed (which is
// forbidden). If the Go value is nil, then it is illegal for it to be an array
// element, and valueIsNil is returned as true.
// Returns the TOML type of a Go value. The type may be `nil`, which means
// no concrete TOML type could be found.
func tomlTypeOfGo(rv reflect.Value) tomlType {
if isNil(rv) || !rv.IsValid() {
return nil
}
switch rv.Kind() {
case reflect.Bool:
return tomlBool
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32,
reflect.Int64,
reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32,
reflect.Uint64:
return tomlInteger
case reflect.Float32, reflect.Float64:
return tomlFloat
case reflect.Array, reflect.Slice:
if typeEqual(tomlHash, tomlArrayType(rv)) {
return tomlArrayHash
}
return tomlArray
case reflect.Ptr, reflect.Interface:
return tomlTypeOfGo(rv.Elem())
case reflect.String:
return tomlString
case reflect.Map:
return tomlHash
case reflect.Struct:
switch rv.Interface().(type) {
case time.Time:
return tomlDatetime
case TextMarshaler:
return tomlString
default:
return tomlHash
}
default:
panic("unexpected reflect.Kind: " + rv.Kind().String())
}
}
// tomlArrayType returns the element type of a TOML array. The type returned
// may be nil if it cannot be determined (e.g., a nil slice or a zero length
// slize). This function may also panic if it finds a type that cannot be
// expressed in TOML (such as nil elements, heterogeneous arrays or directly
// nested arrays of tables).
func tomlArrayType(rv reflect.Value) tomlType {
if isNil(rv) || !rv.IsValid() || rv.Len() == 0 {
return nil
}
firstType := tomlTypeOfGo(rv.Index(0))
if firstType == nil {
encPanic(errArrayNilElement)
}
rvlen := rv.Len()
for i := 1; i < rvlen; i++ {
elem := rv.Index(i)
switch elemType := tomlTypeOfGo(elem); {
case elemType == nil:
encPanic(errArrayNilElement)
case !typeEqual(firstType, elemType):
encPanic(errArrayMixedElementTypes)
}
}
// If we have a nested array, then we must make sure that the nested
// array contains ONLY primitives.
// This checks arbitrarily nested arrays.
if typeEqual(firstType, tomlArray) || typeEqual(firstType, tomlArrayHash) {
nest := tomlArrayType(eindirect(rv.Index(0)))
if typeEqual(nest, tomlHash) || typeEqual(nest, tomlArrayHash) {
encPanic(errArrayNoTable)
}
}
return firstType
}
type tagOptions struct {
skip bool // "-"
name string
omitempty bool
omitzero bool
}
func getOptions(tag reflect.StructTag) tagOptions {
t := tag.Get("toml")
if t == "-" {
return tagOptions{skip: true}
}
var opts tagOptions
parts := strings.Split(t, ",")
opts.name = parts[0]
for _, s := range parts[1:] {
switch s {
case "omitempty":
opts.omitempty = true
case "omitzero":
opts.omitzero = true
}
}
return opts
}
func isZero(rv reflect.Value) bool {
switch rv.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return rv.Int() == 0
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
return rv.Uint() == 0
case reflect.Float32, reflect.Float64:
return rv.Float() == 0.0
}
return false
}
func isEmpty(rv reflect.Value) bool {
switch rv.Kind() {
case reflect.Array, reflect.Slice, reflect.Map, reflect.String:
return rv.Len() == 0
case reflect.Bool:
return !rv.Bool()
}
return false
}
func (enc *Encoder) newline() {
if enc.hasWritten {
enc.wf("\n")
}
}
func (enc *Encoder) keyEqElement(key Key, val reflect.Value) {
if len(key) == 0 {
encPanic(errNoKey)
}
panicIfInvalidKey(key)
enc.wf("%s%s = ", enc.indentStr(key), key.maybeQuoted(len(key)-1))
enc.eElement(val)
enc.newline()
}
func (enc *Encoder) wf(format string, v ...interface{}) {
if _, err := fmt.Fprintf(enc.w, format, v...); err != nil {
encPanic(err)
}
enc.hasWritten = true
}
func (enc *Encoder) indentStr(key Key) string {
return strings.Repeat(enc.Indent, len(key)-1)
}
func encPanic(err error) {
panic(tomlEncodeError{err})
}
func eindirect(v reflect.Value) reflect.Value {
switch v.Kind() {
case reflect.Ptr, reflect.Interface:
return eindirect(v.Elem())
default:
return v
}
}
func isNil(rv reflect.Value) bool {
switch rv.Kind() {
case reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice:
return rv.IsNil()
default:
return false
}
}
func panicIfInvalidKey(key Key) {
for _, k := range key {
if len(k) == 0 {
encPanic(e("Key '%s' is not a valid table name. Key names "+
"cannot be empty.", key.maybeQuotedAll()))
}
}
}
func isValidKeyName(s string) bool {
return len(s) != 0
}

19
vendor/github.com/BurntSushi/toml/encoding_types.go generated vendored Normal file
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@ -0,0 +1,19 @@
// +build go1.2
package toml
// In order to support Go 1.1, we define our own TextMarshaler and
// TextUnmarshaler types. For Go 1.2+, we just alias them with the
// standard library interfaces.
import (
"encoding"
)
// TextMarshaler is a synonym for encoding.TextMarshaler. It is defined here
// so that Go 1.1 can be supported.
type TextMarshaler encoding.TextMarshaler
// TextUnmarshaler is a synonym for encoding.TextUnmarshaler. It is defined
// here so that Go 1.1 can be supported.
type TextUnmarshaler encoding.TextUnmarshaler

18
vendor/github.com/BurntSushi/toml/encoding_types_1.1.go generated vendored Normal file
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@ -0,0 +1,18 @@
// +build !go1.2
package toml
// These interfaces were introduced in Go 1.2, so we add them manually when
// compiling for Go 1.1.
// TextMarshaler is a synonym for encoding.TextMarshaler. It is defined here
// so that Go 1.1 can be supported.
type TextMarshaler interface {
MarshalText() (text []byte, err error)
}
// TextUnmarshaler is a synonym for encoding.TextUnmarshaler. It is defined
// here so that Go 1.1 can be supported.
type TextUnmarshaler interface {
UnmarshalText(text []byte) error
}

953
vendor/github.com/BurntSushi/toml/lex.go generated vendored Normal file
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@ -0,0 +1,953 @@
package toml
import (
"fmt"
"strings"
"unicode"
"unicode/utf8"
)
type itemType int
const (
itemError itemType = iota
itemNIL // used in the parser to indicate no type
itemEOF
itemText
itemString
itemRawString
itemMultilineString
itemRawMultilineString
itemBool
itemInteger
itemFloat
itemDatetime
itemArray // the start of an array
itemArrayEnd
itemTableStart
itemTableEnd
itemArrayTableStart
itemArrayTableEnd
itemKeyStart
itemCommentStart
itemInlineTableStart
itemInlineTableEnd
)
const (
eof = 0
comma = ','
tableStart = '['
tableEnd = ']'
arrayTableStart = '['
arrayTableEnd = ']'
tableSep = '.'
keySep = '='
arrayStart = '['
arrayEnd = ']'
commentStart = '#'
stringStart = '"'
stringEnd = '"'
rawStringStart = '\''
rawStringEnd = '\''
inlineTableStart = '{'
inlineTableEnd = '}'
)
type stateFn func(lx *lexer) stateFn
type lexer struct {
input string
start int
pos int
line int
state stateFn
items chan item
// Allow for backing up up to three runes.
// This is necessary because TOML contains 3-rune tokens (""" and ''').
prevWidths [3]int
nprev int // how many of prevWidths are in use
// If we emit an eof, we can still back up, but it is not OK to call
// next again.
atEOF bool
// A stack of state functions used to maintain context.
// The idea is to reuse parts of the state machine in various places.
// For example, values can appear at the top level or within arbitrarily
// nested arrays. The last state on the stack is used after a value has
// been lexed. Similarly for comments.
stack []stateFn
}
type item struct {
typ itemType
val string
line int
}
func (lx *lexer) nextItem() item {
for {
select {
case item := <-lx.items:
return item
default:
lx.state = lx.state(lx)
}
}
}
func lex(input string) *lexer {
lx := &lexer{
input: input,
state: lexTop,
line: 1,
items: make(chan item, 10),
stack: make([]stateFn, 0, 10),
}
return lx
}
func (lx *lexer) push(state stateFn) {
lx.stack = append(lx.stack, state)
}
func (lx *lexer) pop() stateFn {
if len(lx.stack) == 0 {
return lx.errorf("BUG in lexer: no states to pop")
}
last := lx.stack[len(lx.stack)-1]
lx.stack = lx.stack[0 : len(lx.stack)-1]
return last
}
func (lx *lexer) current() string {
return lx.input[lx.start:lx.pos]
}
func (lx *lexer) emit(typ itemType) {
lx.items <- item{typ, lx.current(), lx.line}
lx.start = lx.pos
}
func (lx *lexer) emitTrim(typ itemType) {
lx.items <- item{typ, strings.TrimSpace(lx.current()), lx.line}
lx.start = lx.pos
}
func (lx *lexer) next() (r rune) {
if lx.atEOF {
panic("next called after EOF")
}
if lx.pos >= len(lx.input) {
lx.atEOF = true
return eof
}
if lx.input[lx.pos] == '\n' {
lx.line++
}
lx.prevWidths[2] = lx.prevWidths[1]
lx.prevWidths[1] = lx.prevWidths[0]
if lx.nprev < 3 {
lx.nprev++
}
r, w := utf8.DecodeRuneInString(lx.input[lx.pos:])
lx.prevWidths[0] = w
lx.pos += w
return r
}
// ignore skips over the pending input before this point.
func (lx *lexer) ignore() {
lx.start = lx.pos
}
// backup steps back one rune. Can be called only twice between calls to next.
func (lx *lexer) backup() {
if lx.atEOF {
lx.atEOF = false
return
}
if lx.nprev < 1 {
panic("backed up too far")
}
w := lx.prevWidths[0]
lx.prevWidths[0] = lx.prevWidths[1]
lx.prevWidths[1] = lx.prevWidths[2]
lx.nprev--
lx.pos -= w
if lx.pos < len(lx.input) && lx.input[lx.pos] == '\n' {
lx.line--
}
}
// accept consumes the next rune if it's equal to `valid`.
func (lx *lexer) accept(valid rune) bool {
if lx.next() == valid {
return true
}
lx.backup()
return false
}
// peek returns but does not consume the next rune in the input.
func (lx *lexer) peek() rune {
r := lx.next()
lx.backup()
return r
}
// skip ignores all input that matches the given predicate.
func (lx *lexer) skip(pred func(rune) bool) {
for {
r := lx.next()
if pred(r) {
continue
}
lx.backup()
lx.ignore()
return
}
}
// errorf stops all lexing by emitting an error and returning `nil`.
// Note that any value that is a character is escaped if it's a special
// character (newlines, tabs, etc.).
func (lx *lexer) errorf(format string, values ...interface{}) stateFn {
lx.items <- item{
itemError,
fmt.Sprintf(format, values...),
lx.line,
}
return nil
}
// lexTop consumes elements at the top level of TOML data.
func lexTop(lx *lexer) stateFn {
r := lx.next()
if isWhitespace(r) || isNL(r) {
return lexSkip(lx, lexTop)
}
switch r {
case commentStart:
lx.push(lexTop)
return lexCommentStart
case tableStart:
return lexTableStart
case eof:
if lx.pos > lx.start {
return lx.errorf("unexpected EOF")
}
lx.emit(itemEOF)
return nil
}
// At this point, the only valid item can be a key, so we back up
// and let the key lexer do the rest.
lx.backup()
lx.push(lexTopEnd)
return lexKeyStart
}
// lexTopEnd is entered whenever a top-level item has been consumed. (A value
// or a table.) It must see only whitespace, and will turn back to lexTop
// upon a newline. If it sees EOF, it will quit the lexer successfully.
func lexTopEnd(lx *lexer) stateFn {
r := lx.next()
switch {
case r == commentStart:
// a comment will read to a newline for us.
lx.push(lexTop)
return lexCommentStart
case isWhitespace(r):
return lexTopEnd
case isNL(r):
lx.ignore()
return lexTop
case r == eof:
lx.emit(itemEOF)
return nil
}
return lx.errorf("expected a top-level item to end with a newline, "+
"comment, or EOF, but got %q instead", r)
}
// lexTable lexes the beginning of a table. Namely, it makes sure that
// it starts with a character other than '.' and ']'.
// It assumes that '[' has already been consumed.
// It also handles the case that this is an item in an array of tables.
// e.g., '[[name]]'.
func lexTableStart(lx *lexer) stateFn {
if lx.peek() == arrayTableStart {
lx.next()
lx.emit(itemArrayTableStart)
lx.push(lexArrayTableEnd)
} else {
lx.emit(itemTableStart)
lx.push(lexTableEnd)
}
return lexTableNameStart
}
func lexTableEnd(lx *lexer) stateFn {
lx.emit(itemTableEnd)
return lexTopEnd
}
func lexArrayTableEnd(lx *lexer) stateFn {
if r := lx.next(); r != arrayTableEnd {
return lx.errorf("expected end of table array name delimiter %q, "+
"but got %q instead", arrayTableEnd, r)
}
lx.emit(itemArrayTableEnd)
return lexTopEnd
}
func lexTableNameStart(lx *lexer) stateFn {
lx.skip(isWhitespace)
switch r := lx.peek(); {
case r == tableEnd || r == eof:
return lx.errorf("unexpected end of table name " +
"(table names cannot be empty)")
case r == tableSep:
return lx.errorf("unexpected table separator " +
"(table names cannot be empty)")
case r == stringStart || r == rawStringStart:
lx.ignore()
lx.push(lexTableNameEnd)
return lexValue // reuse string lexing
default:
return lexBareTableName
}
}
// lexBareTableName lexes the name of a table. It assumes that at least one
// valid character for the table has already been read.
func lexBareTableName(lx *lexer) stateFn {
r := lx.next()
if isBareKeyChar(r) {
return lexBareTableName
}
lx.backup()
lx.emit(itemText)
return lexTableNameEnd
}
// lexTableNameEnd reads the end of a piece of a table name, optionally
// consuming whitespace.
func lexTableNameEnd(lx *lexer) stateFn {
lx.skip(isWhitespace)
switch r := lx.next(); {
case isWhitespace(r):
return lexTableNameEnd
case r == tableSep:
lx.ignore()
return lexTableNameStart
case r == tableEnd:
return lx.pop()
default:
return lx.errorf("expected '.' or ']' to end table name, "+
"but got %q instead", r)
}
}
// lexKeyStart consumes a key name up until the first non-whitespace character.
// lexKeyStart will ignore whitespace.
func lexKeyStart(lx *lexer) stateFn {
r := lx.peek()
switch {
case r == keySep:
return lx.errorf("unexpected key separator %q", keySep)
case isWhitespace(r) || isNL(r):
lx.next()
return lexSkip(lx, lexKeyStart)
case r == stringStart || r == rawStringStart:
lx.ignore()
lx.emit(itemKeyStart)
lx.push(lexKeyEnd)
return lexValue // reuse string lexing
default:
lx.ignore()
lx.emit(itemKeyStart)
return lexBareKey
}
}
// lexBareKey consumes the text of a bare key. Assumes that the first character
// (which is not whitespace) has not yet been consumed.
func lexBareKey(lx *lexer) stateFn {
switch r := lx.next(); {
case isBareKeyChar(r):
return lexBareKey
case isWhitespace(r):
lx.backup()
lx.emit(itemText)
return lexKeyEnd
case r == keySep:
lx.backup()
lx.emit(itemText)
return lexKeyEnd
default:
return lx.errorf("bare keys cannot contain %q", r)
}
}
// lexKeyEnd consumes the end of a key and trims whitespace (up to the key
// separator).
func lexKeyEnd(lx *lexer) stateFn {
switch r := lx.next(); {
case r == keySep:
return lexSkip(lx, lexValue)
case isWhitespace(r):
return lexSkip(lx, lexKeyEnd)
default:
return lx.errorf("expected key separator %q, but got %q instead",
keySep, r)
}
}
// lexValue starts the consumption of a value anywhere a value is expected.
// lexValue will ignore whitespace.
// After a value is lexed, the last state on the next is popped and returned.
func lexValue(lx *lexer) stateFn {
// We allow whitespace to precede a value, but NOT newlines.
// In array syntax, the array states are responsible for ignoring newlines.
r := lx.next()
switch {
case isWhitespace(r):
return lexSkip(lx, lexValue)
case isDigit(r):
lx.backup() // avoid an extra state and use the same as above
return lexNumberOrDateStart
}
switch r {
case arrayStart:
lx.ignore()
lx.emit(itemArray)
return lexArrayValue
case inlineTableStart:
lx.ignore()
lx.emit(itemInlineTableStart)
return lexInlineTableValue
case stringStart:
if lx.accept(stringStart) {
if lx.accept(stringStart) {
lx.ignore() // Ignore """
return lexMultilineString
}
lx.backup()
}
lx.ignore() // ignore the '"'
return lexString
case rawStringStart:
if lx.accept(rawStringStart) {
if lx.accept(rawStringStart) {
lx.ignore() // Ignore """
return lexMultilineRawString
}
lx.backup()
}
lx.ignore() // ignore the "'"
return lexRawString
case '+', '-':
return lexNumberStart
case '.': // special error case, be kind to users
return lx.errorf("floats must start with a digit, not '.'")
}
if unicode.IsLetter(r) {
// Be permissive here; lexBool will give a nice error if the
// user wrote something like
// x = foo
// (i.e. not 'true' or 'false' but is something else word-like.)
lx.backup()
return lexBool
}
return lx.errorf("expected value but found %q instead", r)
}
// lexArrayValue consumes one value in an array. It assumes that '[' or ','
// have already been consumed. All whitespace and newlines are ignored.
func lexArrayValue(lx *lexer) stateFn {
r := lx.next()
switch {
case isWhitespace(r) || isNL(r):
return lexSkip(lx, lexArrayValue)
case r == commentStart:
lx.push(lexArrayValue)
return lexCommentStart
case r == comma:
return lx.errorf("unexpected comma")
case r == arrayEnd:
// NOTE(caleb): The spec isn't clear about whether you can have
// a trailing comma or not, so we'll allow it.
return lexArrayEnd
}
lx.backup()
lx.push(lexArrayValueEnd)
return lexValue
}
// lexArrayValueEnd consumes everything between the end of an array value and
// the next value (or the end of the array): it ignores whitespace and newlines
// and expects either a ',' or a ']'.
func lexArrayValueEnd(lx *lexer) stateFn {
r := lx.next()
switch {
case isWhitespace(r) || isNL(r):
return lexSkip(lx, lexArrayValueEnd)
case r == commentStart:
lx.push(lexArrayValueEnd)
return lexCommentStart
case r == comma:
lx.ignore()
return lexArrayValue // move on to the next value
case r == arrayEnd:
return lexArrayEnd
}
return lx.errorf(
"expected a comma or array terminator %q, but got %q instead",
arrayEnd, r,
)
}
// lexArrayEnd finishes the lexing of an array.
// It assumes that a ']' has just been consumed.
func lexArrayEnd(lx *lexer) stateFn {
lx.ignore()
lx.emit(itemArrayEnd)
return lx.pop()
}
// lexInlineTableValue consumes one key/value pair in an inline table.
// It assumes that '{' or ',' have already been consumed. Whitespace is ignored.
func lexInlineTableValue(lx *lexer) stateFn {
r := lx.next()
switch {
case isWhitespace(r):
return lexSkip(lx, lexInlineTableValue)
case isNL(r):
return lx.errorf("newlines not allowed within inline tables")
case r == commentStart:
lx.push(lexInlineTableValue)
return lexCommentStart
case r == comma:
return lx.errorf("unexpected comma")
case r == inlineTableEnd:
return lexInlineTableEnd
}
lx.backup()
lx.push(lexInlineTableValueEnd)
return lexKeyStart
}
// lexInlineTableValueEnd consumes everything between the end of an inline table
// key/value pair and the next pair (or the end of the table):
// it ignores whitespace and expects either a ',' or a '}'.
func lexInlineTableValueEnd(lx *lexer) stateFn {
r := lx.next()
switch {
case isWhitespace(r):
return lexSkip(lx, lexInlineTableValueEnd)
case isNL(r):
return lx.errorf("newlines not allowed within inline tables")
case r == commentStart:
lx.push(lexInlineTableValueEnd)
return lexCommentStart
case r == comma:
lx.ignore()
return lexInlineTableValue
case r == inlineTableEnd:
return lexInlineTableEnd
}
return lx.errorf("expected a comma or an inline table terminator %q, "+
"but got %q instead", inlineTableEnd, r)
}
// lexInlineTableEnd finishes the lexing of an inline table.
// It assumes that a '}' has just been consumed.
func lexInlineTableEnd(lx *lexer) stateFn {
lx.ignore()
lx.emit(itemInlineTableEnd)
return lx.pop()
}
// lexString consumes the inner contents of a string. It assumes that the
// beginning '"' has already been consumed and ignored.
func lexString(lx *lexer) stateFn {
r := lx.next()
switch {
case r == eof:
return lx.errorf("unexpected EOF")
case isNL(r):
return lx.errorf("strings cannot contain newlines")
case r == '\\':
lx.push(lexString)
return lexStringEscape
case r == stringEnd:
lx.backup()
lx.emit(itemString)
lx.next()
lx.ignore()
return lx.pop()
}
return lexString
}
// lexMultilineString consumes the inner contents of a string. It assumes that
// the beginning '"""' has already been consumed and ignored.
func lexMultilineString(lx *lexer) stateFn {
switch lx.next() {
case eof:
return lx.errorf("unexpected EOF")
case '\\':
return lexMultilineStringEscape
case stringEnd:
if lx.accept(stringEnd) {
if lx.accept(stringEnd) {
lx.backup()
lx.backup()
lx.backup()
lx.emit(itemMultilineString)
lx.next()
lx.next()
lx.next()
lx.ignore()
return lx.pop()
}
lx.backup()
}
}
return lexMultilineString
}
// lexRawString consumes a raw string. Nothing can be escaped in such a string.
// It assumes that the beginning "'" has already been consumed and ignored.
func lexRawString(lx *lexer) stateFn {
r := lx.next()
switch {
case r == eof:
return lx.errorf("unexpected EOF")
case isNL(r):
return lx.errorf("strings cannot contain newlines")
case r == rawStringEnd:
lx.backup()
lx.emit(itemRawString)
lx.next()
lx.ignore()
return lx.pop()
}
return lexRawString
}
// lexMultilineRawString consumes a raw string. Nothing can be escaped in such
// a string. It assumes that the beginning "'''" has already been consumed and
// ignored.
func lexMultilineRawString(lx *lexer) stateFn {
switch lx.next() {
case eof:
return lx.errorf("unexpected EOF")
case rawStringEnd:
if lx.accept(rawStringEnd) {
if lx.accept(rawStringEnd) {
lx.backup()
lx.backup()
lx.backup()
lx.emit(itemRawMultilineString)
lx.next()
lx.next()
lx.next()
lx.ignore()
return lx.pop()
}
lx.backup()
}
}
return lexMultilineRawString
}
// lexMultilineStringEscape consumes an escaped character. It assumes that the
// preceding '\\' has already been consumed.
func lexMultilineStringEscape(lx *lexer) stateFn {
// Handle the special case first:
if isNL(lx.next()) {
return lexMultilineString
}
lx.backup()
lx.push(lexMultilineString)
return lexStringEscape(lx)
}
func lexStringEscape(lx *lexer) stateFn {
r := lx.next()
switch r {
case 'b':
fallthrough
case 't':
fallthrough
case 'n':
fallthrough
case 'f':
fallthrough
case 'r':
fallthrough
case '"':
fallthrough
case '\\':
return lx.pop()
case 'u':
return lexShortUnicodeEscape
case 'U':
return lexLongUnicodeEscape
}
return lx.errorf("invalid escape character %q; only the following "+
"escape characters are allowed: "+
`\b, \t, \n, \f, \r, \", \\, \uXXXX, and \UXXXXXXXX`, r)
}
func lexShortUnicodeEscape(lx *lexer) stateFn {
var r rune
for i := 0; i < 4; i++ {
r = lx.next()
if !isHexadecimal(r) {
return lx.errorf(`expected four hexadecimal digits after '\u', `+
"but got %q instead", lx.current())
}
}
return lx.pop()
}
func lexLongUnicodeEscape(lx *lexer) stateFn {
var r rune
for i := 0; i < 8; i++ {
r = lx.next()
if !isHexadecimal(r) {
return lx.errorf(`expected eight hexadecimal digits after '\U', `+
"but got %q instead", lx.current())
}
}
return lx.pop()
}
// lexNumberOrDateStart consumes either an integer, a float, or datetime.
func lexNumberOrDateStart(lx *lexer) stateFn {
r := lx.next()
if isDigit(r) {
return lexNumberOrDate
}
switch r {
case '_':
return lexNumber
case 'e', 'E':
return lexFloat
case '.':
return lx.errorf("floats must start with a digit, not '.'")
}
return lx.errorf("expected a digit but got %q", r)
}
// lexNumberOrDate consumes either an integer, float or datetime.
func lexNumberOrDate(lx *lexer) stateFn {
r := lx.next()
if isDigit(r) {
return lexNumberOrDate
}
switch r {
case '-':
return lexDatetime
case '_':
return lexNumber
case '.', 'e', 'E':
return lexFloat
}
lx.backup()
lx.emit(itemInteger)
return lx.pop()
}
// lexDatetime consumes a Datetime, to a first approximation.
// The parser validates that it matches one of the accepted formats.
func lexDatetime(lx *lexer) stateFn {
r := lx.next()
if isDigit(r) {
return lexDatetime
}
switch r {
case '-', 'T', ':', '.', 'Z', '+':
return lexDatetime
}
lx.backup()
lx.emit(itemDatetime)
return lx.pop()
}
// lexNumberStart consumes either an integer or a float. It assumes that a sign
// has already been read, but that *no* digits have been consumed.
// lexNumberStart will move to the appropriate integer or float states.
func lexNumberStart(lx *lexer) stateFn {
// We MUST see a digit. Even floats have to start with a digit.
r := lx.next()
if !isDigit(r) {
if r == '.' {
return lx.errorf("floats must start with a digit, not '.'")
}
return lx.errorf("expected a digit but got %q", r)
}
return lexNumber
}
// lexNumber consumes an integer or a float after seeing the first digit.
func lexNumber(lx *lexer) stateFn {
r := lx.next()
if isDigit(r) {
return lexNumber
}
switch r {
case '_':
return lexNumber
case '.', 'e', 'E':
return lexFloat
}
lx.backup()
lx.emit(itemInteger)
return lx.pop()
}
// lexFloat consumes the elements of a float. It allows any sequence of
// float-like characters, so floats emitted by the lexer are only a first
// approximation and must be validated by the parser.
func lexFloat(lx *lexer) stateFn {
r := lx.next()
if isDigit(r) {
return lexFloat
}
switch r {
case '_', '.', '-', '+', 'e', 'E':
return lexFloat
}
lx.backup()
lx.emit(itemFloat)
return lx.pop()
}
// lexBool consumes a bool string: 'true' or 'false.
func lexBool(lx *lexer) stateFn {
var rs []rune
for {
r := lx.next()
if !unicode.IsLetter(r) {
lx.backup()
break
}
rs = append(rs, r)
}
s := string(rs)
switch s {
case "true", "false":
lx.emit(itemBool)
return lx.pop()
}
return lx.errorf("expected value but found %q instead", s)
}
// lexCommentStart begins the lexing of a comment. It will emit
// itemCommentStart and consume no characters, passing control to lexComment.
func lexCommentStart(lx *lexer) stateFn {
lx.ignore()
lx.emit(itemCommentStart)
return lexComment
}
// lexComment lexes an entire comment. It assumes that '#' has been consumed.
// It will consume *up to* the first newline character, and pass control
// back to the last state on the stack.
func lexComment(lx *lexer) stateFn {
r := lx.peek()
if isNL(r) || r == eof {
lx.emit(itemText)
return lx.pop()
}
lx.next()
return lexComment
}
// lexSkip ignores all slurped input and moves on to the next state.
func lexSkip(lx *lexer, nextState stateFn) stateFn {
return func(lx *lexer) stateFn {
lx.ignore()
return nextState
}
}
// isWhitespace returns true if `r` is a whitespace character according
// to the spec.
func isWhitespace(r rune) bool {
return r == '\t' || r == ' '
}
func isNL(r rune) bool {
return r == '\n' || r == '\r'
}
func isDigit(r rune) bool {
return r >= '0' && r <= '9'
}
func isHexadecimal(r rune) bool {
return (r >= '0' && r <= '9') ||
(r >= 'a' && r <= 'f') ||
(r >= 'A' && r <= 'F')
}
func isBareKeyChar(r rune) bool {
return (r >= 'A' && r <= 'Z') ||
(r >= 'a' && r <= 'z') ||
(r >= '0' && r <= '9') ||
r == '_' ||
r == '-'
}
func (itype itemType) String() string {
switch itype {
case itemError:
return "Error"
case itemNIL:
return "NIL"
case itemEOF:
return "EOF"
case itemText:
return "Text"
case itemString, itemRawString, itemMultilineString, itemRawMultilineString:
return "String"
case itemBool:
return "Bool"
case itemInteger:
return "Integer"
case itemFloat:
return "Float"
case itemDatetime:
return "DateTime"
case itemTableStart:
return "TableStart"
case itemTableEnd:
return "TableEnd"
case itemKeyStart:
return "KeyStart"
case itemArray:
return "Array"
case itemArrayEnd:
return "ArrayEnd"
case itemCommentStart:
return "CommentStart"
}
panic(fmt.Sprintf("BUG: Unknown type '%d'.", int(itype)))
}
func (item item) String() string {
return fmt.Sprintf("(%s, %s)", item.typ.String(), item.val)
}

592
vendor/github.com/BurntSushi/toml/parse.go generated vendored Normal file
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@ -0,0 +1,592 @@
package toml
import (
"fmt"
"strconv"
"strings"
"time"
"unicode"
"unicode/utf8"
)
type parser struct {
mapping map[string]interface{}
types map[string]tomlType
lx *lexer
// A list of keys in the order that they appear in the TOML data.
ordered []Key
// the full key for the current hash in scope
context Key
// the base key name for everything except hashes
currentKey string
// rough approximation of line number
approxLine int
// A map of 'key.group.names' to whether they were created implicitly.
implicits map[string]bool
}
type parseError string
func (pe parseError) Error() string {
return string(pe)
}
func parse(data string) (p *parser, err error) {
defer func() {
if r := recover(); r != nil {
var ok bool
if err, ok = r.(parseError); ok {
return
}
panic(r)
}
}()
p = &parser{
mapping: make(map[string]interface{}),
types: make(map[string]tomlType),
lx: lex(data),
ordered: make([]Key, 0),
implicits: make(map[string]bool),
}
for {
item := p.next()
if item.typ == itemEOF {
break
}
p.topLevel(item)
}
return p, nil
}
func (p *parser) panicf(format string, v ...interface{}) {
msg := fmt.Sprintf("Near line %d (last key parsed '%s'): %s",
p.approxLine, p.current(), fmt.Sprintf(format, v...))
panic(parseError(msg))
}
func (p *parser) next() item {
it := p.lx.nextItem()
if it.typ == itemError {
p.panicf("%s", it.val)
}
return it
}
func (p *parser) bug(format string, v ...interface{}) {
panic(fmt.Sprintf("BUG: "+format+"\n\n", v...))
}
func (p *parser) expect(typ itemType) item {
it := p.next()
p.assertEqual(typ, it.typ)
return it
}
func (p *parser) assertEqual(expected, got itemType) {
if expected != got {
p.bug("Expected '%s' but got '%s'.", expected, got)
}
}
func (p *parser) topLevel(item item) {
switch item.typ {
case itemCommentStart:
p.approxLine = item.line
p.expect(itemText)
case itemTableStart:
kg := p.next()
p.approxLine = kg.line
var key Key
for ; kg.typ != itemTableEnd && kg.typ != itemEOF; kg = p.next() {
key = append(key, p.keyString(kg))
}
p.assertEqual(itemTableEnd, kg.typ)
p.establishContext(key, false)
p.setType("", tomlHash)
p.ordered = append(p.ordered, key)
case itemArrayTableStart:
kg := p.next()
p.approxLine = kg.line
var key Key
for ; kg.typ != itemArrayTableEnd && kg.typ != itemEOF; kg = p.next() {
key = append(key, p.keyString(kg))
}
p.assertEqual(itemArrayTableEnd, kg.typ)
p.establishContext(key, true)
p.setType("", tomlArrayHash)
p.ordered = append(p.ordered, key)
case itemKeyStart:
kname := p.next()
p.approxLine = kname.line
p.currentKey = p.keyString(kname)
val, typ := p.value(p.next())
p.setValue(p.currentKey, val)
p.setType(p.currentKey, typ)
p.ordered = append(p.ordered, p.context.add(p.currentKey))
p.currentKey = ""
default:
p.bug("Unexpected type at top level: %s", item.typ)
}
}
// Gets a string for a key (or part of a key in a table name).
func (p *parser) keyString(it item) string {
switch it.typ {
case itemText:
return it.val
case itemString, itemMultilineString,
itemRawString, itemRawMultilineString:
s, _ := p.value(it)
return s.(string)
default:
p.bug("Unexpected key type: %s", it.typ)
panic("unreachable")
}
}
// value translates an expected value from the lexer into a Go value wrapped
// as an empty interface.
func (p *parser) value(it item) (interface{}, tomlType) {
switch it.typ {
case itemString:
return p.replaceEscapes(it.val), p.typeOfPrimitive(it)
case itemMultilineString:
trimmed := stripFirstNewline(stripEscapedWhitespace(it.val))
return p.replaceEscapes(trimmed), p.typeOfPrimitive(it)
case itemRawString:
return it.val, p.typeOfPrimitive(it)
case itemRawMultilineString:
return stripFirstNewline(it.val), p.typeOfPrimitive(it)
case itemBool:
switch it.val {
case "true":
return true, p.typeOfPrimitive(it)
case "false":
return false, p.typeOfPrimitive(it)
}
p.bug("Expected boolean value, but got '%s'.", it.val)
case itemInteger:
if !numUnderscoresOK(it.val) {
p.panicf("Invalid integer %q: underscores must be surrounded by digits",
it.val)
}
val := strings.Replace(it.val, "_", "", -1)
num, err := strconv.ParseInt(val, 10, 64)
if err != nil {
// Distinguish integer values. Normally, it'd be a bug if the lexer
// provides an invalid integer, but it's possible that the number is
// out of range of valid values (which the lexer cannot determine).
// So mark the former as a bug but the latter as a legitimate user
// error.
if e, ok := err.(*strconv.NumError); ok &&
e.Err == strconv.ErrRange {
p.panicf("Integer '%s' is out of the range of 64-bit "+
"signed integers.", it.val)
} else {
p.bug("Expected integer value, but got '%s'.", it.val)
}
}
return num, p.typeOfPrimitive(it)
case itemFloat:
parts := strings.FieldsFunc(it.val, func(r rune) bool {
switch r {
case '.', 'e', 'E':
return true
}
return false
})
for _, part := range parts {
if !numUnderscoresOK(part) {
p.panicf("Invalid float %q: underscores must be "+
"surrounded by digits", it.val)
}
}
if !numPeriodsOK(it.val) {
// As a special case, numbers like '123.' or '1.e2',
// which are valid as far as Go/strconv are concerned,
// must be rejected because TOML says that a fractional
// part consists of '.' followed by 1+ digits.
p.panicf("Invalid float %q: '.' must be followed "+
"by one or more digits", it.val)
}
val := strings.Replace(it.val, "_", "", -1)
num, err := strconv.ParseFloat(val, 64)
if err != nil {
if e, ok := err.(*strconv.NumError); ok &&
e.Err == strconv.ErrRange {
p.panicf("Float '%s' is out of the range of 64-bit "+
"IEEE-754 floating-point numbers.", it.val)
} else {
p.panicf("Invalid float value: %q", it.val)
}
}
return num, p.typeOfPrimitive(it)
case itemDatetime:
var t time.Time
var ok bool
var err error
for _, format := range []string{
"2006-01-02T15:04:05Z07:00",
"2006-01-02T15:04:05",
"2006-01-02",
} {
t, err = time.ParseInLocation(format, it.val, time.Local)
if err == nil {
ok = true
break
}
}
if !ok {
p.panicf("Invalid TOML Datetime: %q.", it.val)
}
return t, p.typeOfPrimitive(it)
case itemArray:
array := make([]interface{}, 0)
types := make([]tomlType, 0)
for it = p.next(); it.typ != itemArrayEnd; it = p.next() {
if it.typ == itemCommentStart {
p.expect(itemText)
continue
}
val, typ := p.value(it)
array = append(array, val)
types = append(types, typ)
}
return array, p.typeOfArray(types)
case itemInlineTableStart:
var (
hash = make(map[string]interface{})
outerContext = p.context
outerKey = p.currentKey
)
p.context = append(p.context, p.currentKey)
p.currentKey = ""
for it := p.next(); it.typ != itemInlineTableEnd; it = p.next() {
if it.typ != itemKeyStart {
p.bug("Expected key start but instead found %q, around line %d",
it.val, p.approxLine)
}
if it.typ == itemCommentStart {
p.expect(itemText)
continue
}
// retrieve key
k := p.next()
p.approxLine = k.line
kname := p.keyString(k)
// retrieve value
p.currentKey = kname
val, typ := p.value(p.next())
// make sure we keep metadata up to date
p.setType(kname, typ)
p.ordered = append(p.ordered, p.context.add(p.currentKey))
hash[kname] = val
}
p.context = outerContext
p.currentKey = outerKey
return hash, tomlHash
}
p.bug("Unexpected value type: %s", it.typ)
panic("unreachable")
}
// numUnderscoresOK checks whether each underscore in s is surrounded by
// characters that are not underscores.
func numUnderscoresOK(s string) bool {
accept := false
for _, r := range s {
if r == '_' {
if !accept {
return false
}
accept = false
continue
}
accept = true
}
return accept
}
// numPeriodsOK checks whether every period in s is followed by a digit.
func numPeriodsOK(s string) bool {
period := false
for _, r := range s {
if period && !isDigit(r) {
return false
}
period = r == '.'
}
return !period
}
// establishContext sets the current context of the parser,
// where the context is either a hash or an array of hashes. Which one is
// set depends on the value of the `array` parameter.
//
// Establishing the context also makes sure that the key isn't a duplicate, and
// will create implicit hashes automatically.
func (p *parser) establishContext(key Key, array bool) {
var ok bool
// Always start at the top level and drill down for our context.
hashContext := p.mapping
keyContext := make(Key, 0)
// We only need implicit hashes for key[0:-1]
for _, k := range key[0 : len(key)-1] {
_, ok = hashContext[k]
keyContext = append(keyContext, k)
// No key? Make an implicit hash and move on.
if !ok {
p.addImplicit(keyContext)
hashContext[k] = make(map[string]interface{})
}
// If the hash context is actually an array of tables, then set
// the hash context to the last element in that array.
//
// Otherwise, it better be a table, since this MUST be a key group (by
// virtue of it not being the last element in a key).
switch t := hashContext[k].(type) {
case []map[string]interface{}:
hashContext = t[len(t)-1]
case map[string]interface{}:
hashContext = t
default:
p.panicf("Key '%s' was already created as a hash.", keyContext)
}
}
p.context = keyContext
if array {
// If this is the first element for this array, then allocate a new
// list of tables for it.
k := key[len(key)-1]
if _, ok := hashContext[k]; !ok {
hashContext[k] = make([]map[string]interface{}, 0, 5)
}
// Add a new table. But make sure the key hasn't already been used
// for something else.
if hash, ok := hashContext[k].([]map[string]interface{}); ok {
hashContext[k] = append(hash, make(map[string]interface{}))
} else {
p.panicf("Key '%s' was already created and cannot be used as "+
"an array.", keyContext)
}
} else {
p.setValue(key[len(key)-1], make(map[string]interface{}))
}
p.context = append(p.context, key[len(key)-1])
}
// setValue sets the given key to the given value in the current context.
// It will make sure that the key hasn't already been defined, account for
// implicit key groups.
func (p *parser) setValue(key string, value interface{}) {
var tmpHash interface{}
var ok bool
hash := p.mapping
keyContext := make(Key, 0)
for _, k := range p.context {
keyContext = append(keyContext, k)
if tmpHash, ok = hash[k]; !ok {
p.bug("Context for key '%s' has not been established.", keyContext)
}
switch t := tmpHash.(type) {
case []map[string]interface{}:
// The context is a table of hashes. Pick the most recent table
// defined as the current hash.
hash = t[len(t)-1]
case map[string]interface{}:
hash = t
default:
p.bug("Expected hash to have type 'map[string]interface{}', but "+
"it has '%T' instead.", tmpHash)
}
}
keyContext = append(keyContext, key)
if _, ok := hash[key]; ok {
// Typically, if the given key has already been set, then we have
// to raise an error since duplicate keys are disallowed. However,
// it's possible that a key was previously defined implicitly. In this
// case, it is allowed to be redefined concretely. (See the
// `tests/valid/implicit-and-explicit-after.toml` test in `toml-test`.)
//
// But we have to make sure to stop marking it as an implicit. (So that
// another redefinition provokes an error.)
//
// Note that since it has already been defined (as a hash), we don't
// want to overwrite it. So our business is done.
if p.isImplicit(keyContext) {
p.removeImplicit(keyContext)
return
}
// Otherwise, we have a concrete key trying to override a previous
// key, which is *always* wrong.
p.panicf("Key '%s' has already been defined.", keyContext)
}
hash[key] = value
}
// setType sets the type of a particular value at a given key.
// It should be called immediately AFTER setValue.
//
// Note that if `key` is empty, then the type given will be applied to the
// current context (which is either a table or an array of tables).
func (p *parser) setType(key string, typ tomlType) {
keyContext := make(Key, 0, len(p.context)+1)
for _, k := range p.context {
keyContext = append(keyContext, k)
}
if len(key) > 0 { // allow type setting for hashes
keyContext = append(keyContext, key)
}
p.types[keyContext.String()] = typ
}
// addImplicit sets the given Key as having been created implicitly.
func (p *parser) addImplicit(key Key) {
p.implicits[key.String()] = true
}
// removeImplicit stops tagging the given key as having been implicitly
// created.
func (p *parser) removeImplicit(key Key) {
p.implicits[key.String()] = false
}
// isImplicit returns true if the key group pointed to by the key was created
// implicitly.
func (p *parser) isImplicit(key Key) bool {
return p.implicits[key.String()]
}
// current returns the full key name of the current context.
func (p *parser) current() string {
if len(p.currentKey) == 0 {
return p.context.String()
}
if len(p.context) == 0 {
return p.currentKey
}
return fmt.Sprintf("%s.%s", p.context, p.currentKey)
}
func stripFirstNewline(s string) string {
if len(s) == 0 || s[0] != '\n' {
return s
}
return s[1:]
}
func stripEscapedWhitespace(s string) string {
esc := strings.Split(s, "\\\n")
if len(esc) > 1 {
for i := 1; i < len(esc); i++ {
esc[i] = strings.TrimLeftFunc(esc[i], unicode.IsSpace)
}
}
return strings.Join(esc, "")
}
func (p *parser) replaceEscapes(str string) string {
var replaced []rune
s := []byte(str)
r := 0
for r < len(s) {
if s[r] != '\\' {
c, size := utf8.DecodeRune(s[r:])
r += size
replaced = append(replaced, c)
continue
}
r += 1
if r >= len(s) {
p.bug("Escape sequence at end of string.")
return ""
}
switch s[r] {
default:
p.bug("Expected valid escape code after \\, but got %q.", s[r])
return ""
case 'b':
replaced = append(replaced, rune(0x0008))
r += 1
case 't':
replaced = append(replaced, rune(0x0009))
r += 1
case 'n':
replaced = append(replaced, rune(0x000A))
r += 1
case 'f':
replaced = append(replaced, rune(0x000C))
r += 1
case 'r':
replaced = append(replaced, rune(0x000D))
r += 1
case '"':
replaced = append(replaced, rune(0x0022))
r += 1
case '\\':
replaced = append(replaced, rune(0x005C))
r += 1
case 'u':
// At this point, we know we have a Unicode escape of the form
// `uXXXX` at [r, r+5). (Because the lexer guarantees this
// for us.)
escaped := p.asciiEscapeToUnicode(s[r+1 : r+5])
replaced = append(replaced, escaped)
r += 5
case 'U':
// At this point, we know we have a Unicode escape of the form
// `uXXXX` at [r, r+9). (Because the lexer guarantees this
// for us.)
escaped := p.asciiEscapeToUnicode(s[r+1 : r+9])
replaced = append(replaced, escaped)
r += 9
}
}
return string(replaced)
}
func (p *parser) asciiEscapeToUnicode(bs []byte) rune {
s := string(bs)
hex, err := strconv.ParseUint(strings.ToLower(s), 16, 32)
if err != nil {
p.bug("Could not parse '%s' as a hexadecimal number, but the "+
"lexer claims it's OK: %s", s, err)
}
if !utf8.ValidRune(rune(hex)) {
p.panicf("Escaped character '\\u%s' is not valid UTF-8.", s)
}
return rune(hex)
}
func isStringType(ty itemType) bool {
return ty == itemString || ty == itemMultilineString ||
ty == itemRawString || ty == itemRawMultilineString
}

91
vendor/github.com/BurntSushi/toml/type_check.go generated vendored Normal file
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@ -0,0 +1,91 @@
package toml
// tomlType represents any Go type that corresponds to a TOML type.
// While the first draft of the TOML spec has a simplistic type system that
// probably doesn't need this level of sophistication, we seem to be militating
// toward adding real composite types.
type tomlType interface {
typeString() string
}
// typeEqual accepts any two types and returns true if they are equal.
func typeEqual(t1, t2 tomlType) bool {
if t1 == nil || t2 == nil {
return false
}
return t1.typeString() == t2.typeString()
}
func typeIsHash(t tomlType) bool {
return typeEqual(t, tomlHash) || typeEqual(t, tomlArrayHash)
}
type tomlBaseType string
func (btype tomlBaseType) typeString() string {
return string(btype)
}
func (btype tomlBaseType) String() string {
return btype.typeString()
}
var (
tomlInteger tomlBaseType = "Integer"
tomlFloat tomlBaseType = "Float"
tomlDatetime tomlBaseType = "Datetime"
tomlString tomlBaseType = "String"
tomlBool tomlBaseType = "Bool"
tomlArray tomlBaseType = "Array"
tomlHash tomlBaseType = "Hash"
tomlArrayHash tomlBaseType = "ArrayHash"
)
// typeOfPrimitive returns a tomlType of any primitive value in TOML.
// Primitive values are: Integer, Float, Datetime, String and Bool.
//
// Passing a lexer item other than the following will cause a BUG message
// to occur: itemString, itemBool, itemInteger, itemFloat, itemDatetime.
func (p *parser) typeOfPrimitive(lexItem item) tomlType {
switch lexItem.typ {
case itemInteger:
return tomlInteger
case itemFloat:
return tomlFloat
case itemDatetime:
return tomlDatetime
case itemString:
return tomlString
case itemMultilineString:
return tomlString
case itemRawString:
return tomlString
case itemRawMultilineString:
return tomlString
case itemBool:
return tomlBool
}
p.bug("Cannot infer primitive type of lex item '%s'.", lexItem)
panic("unreachable")
}
// typeOfArray returns a tomlType for an array given a list of types of its
// values.
//
// In the current spec, if an array is homogeneous, then its type is always
// "Array". If the array is not homogeneous, an error is generated.
func (p *parser) typeOfArray(types []tomlType) tomlType {
// Empty arrays are cool.
if len(types) == 0 {
return tomlArray
}
theType := types[0]
for _, t := range types[1:] {
if !typeEqual(theType, t) {
p.panicf("Array contains values of type '%s' and '%s', but "+
"arrays must be homogeneous.", theType, t)
}
}
return tomlArray
}

242
vendor/github.com/BurntSushi/toml/type_fields.go generated vendored Normal file
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@ -0,0 +1,242 @@
package toml
// Struct field handling is adapted from code in encoding/json:
//
// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the Go distribution.
import (
"reflect"
"sort"
"sync"
)
// A field represents a single field found in a struct.
type field struct {
name string // the name of the field (`toml` tag included)
tag bool // whether field has a `toml` tag
index []int // represents the depth of an anonymous field
typ reflect.Type // the type of the field
}
// byName sorts field by name, breaking ties with depth,
// then breaking ties with "name came from toml tag", then
// breaking ties with index sequence.
type byName []field
func (x byName) Len() int { return len(x) }
func (x byName) Swap(i, j int) { x[i], x[j] = x[j], x[i] }
func (x byName) Less(i, j int) bool {
if x[i].name != x[j].name {
return x[i].name < x[j].name
}
if len(x[i].index) != len(x[j].index) {
return len(x[i].index) < len(x[j].index)
}
if x[i].tag != x[j].tag {
return x[i].tag
}
return byIndex(x).Less(i, j)
}
// byIndex sorts field by index sequence.
type byIndex []field
func (x byIndex) Len() int { return len(x) }
func (x byIndex) Swap(i, j int) { x[i], x[j] = x[j], x[i] }
func (x byIndex) Less(i, j int) bool {
for k, xik := range x[i].index {
if k >= len(x[j].index) {
return false
}
if xik != x[j].index[k] {
return xik < x[j].index[k]
}
}
return len(x[i].index) < len(x[j].index)
}
// typeFields returns a list of fields that TOML should recognize for the given
// type. The algorithm is breadth-first search over the set of structs to
// include - the top struct and then any reachable anonymous structs.
func typeFields(t reflect.Type) []field {
// Anonymous fields to explore at the current level and the next.
current := []field{}
next := []field{{typ: t}}
// Count of queued names for current level and the next.
count := map[reflect.Type]int{}
nextCount := map[reflect.Type]int{}
// Types already visited at an earlier level.
visited := map[reflect.Type]bool{}
// Fields found.
var fields []field
for len(next) > 0 {
current, next = next, current[:0]
count, nextCount = nextCount, map[reflect.Type]int{}
for _, f := range current {
if visited[f.typ] {
continue
}
visited[f.typ] = true
// Scan f.typ for fields to include.
for i := 0; i < f.typ.NumField(); i++ {
sf := f.typ.Field(i)
if sf.PkgPath != "" && !sf.Anonymous { // unexported
continue
}
opts := getOptions(sf.Tag)
if opts.skip {
continue
}
index := make([]int, len(f.index)+1)
copy(index, f.index)
index[len(f.index)] = i
ft := sf.Type
if ft.Name() == "" && ft.Kind() == reflect.Ptr {
// Follow pointer.
ft = ft.Elem()
}
// Record found field and index sequence.
if opts.name != "" || !sf.Anonymous || ft.Kind() != reflect.Struct {
tagged := opts.name != ""
name := opts.name
if name == "" {
name = sf.Name
}
fields = append(fields, field{name, tagged, index, ft})
if count[f.typ] > 1 {
// If there were multiple instances, add a second,
// so that the annihilation code will see a duplicate.
// It only cares about the distinction between 1 or 2,
// so don't bother generating any more copies.
fields = append(fields, fields[len(fields)-1])
}
continue
}
// Record new anonymous struct to explore in next round.
nextCount[ft]++
if nextCount[ft] == 1 {
f := field{name: ft.Name(), index: index, typ: ft}
next = append(next, f)
}
}
}
}
sort.Sort(byName(fields))
// Delete all fields that are hidden by the Go rules for embedded fields,
// except that fields with TOML tags are promoted.
// The fields are sorted in primary order of name, secondary order
// of field index length. Loop over names; for each name, delete
// hidden fields by choosing the one dominant field that survives.
out := fields[:0]
for advance, i := 0, 0; i < len(fields); i += advance {
// One iteration per name.
// Find the sequence of fields with the name of this first field.
fi := fields[i]
name := fi.name
for advance = 1; i+advance < len(fields); advance++ {
fj := fields[i+advance]
if fj.name != name {
break
}
}
if advance == 1 { // Only one field with this name
out = append(out, fi)
continue
}
dominant, ok := dominantField(fields[i : i+advance])
if ok {
out = append(out, dominant)
}
}
fields = out
sort.Sort(byIndex(fields))
return fields
}
// dominantField looks through the fields, all of which are known to
// have the same name, to find the single field that dominates the
// others using Go's embedding rules, modified by the presence of
// TOML tags. If there are multiple top-level fields, the boolean
// will be false: This condition is an error in Go and we skip all
// the fields.
func dominantField(fields []field) (field, bool) {
// The fields are sorted in increasing index-length order. The winner
// must therefore be one with the shortest index length. Drop all
// longer entries, which is easy: just truncate the slice.
length := len(fields[0].index)
tagged := -1 // Index of first tagged field.
for i, f := range fields {
if len(f.index) > length {
fields = fields[:i]
break
}
if f.tag {
if tagged >= 0 {
// Multiple tagged fields at the same level: conflict.
// Return no field.
return field{}, false
}
tagged = i
}
}
if tagged >= 0 {
return fields[tagged], true
}
// All remaining fields have the same length. If there's more than one,
// we have a conflict (two fields named "X" at the same level) and we
// return no field.
if len(fields) > 1 {
return field{}, false
}
return fields[0], true
}
var fieldCache struct {
sync.RWMutex
m map[reflect.Type][]field
}
// cachedTypeFields is like typeFields but uses a cache to avoid repeated work.
func cachedTypeFields(t reflect.Type) []field {
fieldCache.RLock()
f := fieldCache.m[t]
fieldCache.RUnlock()
if f != nil {
return f
}
// Compute fields without lock.
// Might duplicate effort but won't hold other computations back.
f = typeFields(t)
if f == nil {
f = []field{}
}
fieldCache.Lock()
if fieldCache.m == nil {
fieldCache.m = map[reflect.Type][]field{}
}
fieldCache.m[t] = f
fieldCache.Unlock()
return f
}

19
vendor/github.com/couchbase/gomemcached/LICENSE generated vendored Normal file
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Copyright (c) 2013 Dustin Sallings
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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vendor/github.com/couchbase/gomemcached/client/tap_feed.go generated vendored Normal file
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package memcached
import (
"bytes"
"encoding/binary"
"fmt"
"io"
"math"
"github.com/couchbase/gomemcached"
"github.com/couchbase/goutils/logging"
)
// TAP protocol docs: <http://www.couchbase.com/wiki/display/couchbase/TAP+Protocol>
// TapOpcode is the tap operation type (found in TapEvent)
type TapOpcode uint8
// Tap opcode values.
const (
TapBeginBackfill = TapOpcode(iota)
TapEndBackfill
TapMutation
TapDeletion
TapCheckpointStart
TapCheckpointEnd
tapEndStream
)
const tapMutationExtraLen = 16
var tapOpcodeNames map[TapOpcode]string
func init() {
tapOpcodeNames = map[TapOpcode]string{
TapBeginBackfill: "BeginBackfill",
TapEndBackfill: "EndBackfill",
TapMutation: "Mutation",
TapDeletion: "Deletion",
TapCheckpointStart: "TapCheckpointStart",
TapCheckpointEnd: "TapCheckpointEnd",
tapEndStream: "EndStream",
}
}
func (opcode TapOpcode) String() string {
name := tapOpcodeNames[opcode]
if name == "" {
name = fmt.Sprintf("#%d", opcode)
}
return name
}
// TapEvent is a TAP notification of an operation on the server.
type TapEvent struct {
Opcode TapOpcode // Type of event
VBucket uint16 // VBucket this event applies to
Flags uint32 // Item flags
Expiry uint32 // Item expiration time
Key, Value []byte // Item key/value
Cas uint64
}
func makeTapEvent(req gomemcached.MCRequest) *TapEvent {
event := TapEvent{
VBucket: req.VBucket,
}
switch req.Opcode {
case gomemcached.TAP_MUTATION:
event.Opcode = TapMutation
event.Key = req.Key
event.Value = req.Body
event.Cas = req.Cas
case gomemcached.TAP_DELETE:
event.Opcode = TapDeletion
event.Key = req.Key
event.Cas = req.Cas
case gomemcached.TAP_CHECKPOINT_START:
event.Opcode = TapCheckpointStart
case gomemcached.TAP_CHECKPOINT_END:
event.Opcode = TapCheckpointEnd
case gomemcached.TAP_OPAQUE:
if len(req.Extras) < 8+4 {
return nil
}
switch op := int(binary.BigEndian.Uint32(req.Extras[8:])); op {
case gomemcached.TAP_OPAQUE_INITIAL_VBUCKET_STREAM:
event.Opcode = TapBeginBackfill
case gomemcached.TAP_OPAQUE_CLOSE_BACKFILL:
event.Opcode = TapEndBackfill
case gomemcached.TAP_OPAQUE_CLOSE_TAP_STREAM:
event.Opcode = tapEndStream
case gomemcached.TAP_OPAQUE_ENABLE_AUTO_NACK:
return nil
case gomemcached.TAP_OPAQUE_ENABLE_CHECKPOINT_SYNC:
return nil
default:
logging.Infof("TapFeed: Ignoring TAP_OPAQUE/%d", op)
return nil // unknown opaque event
}
case gomemcached.NOOP:
return nil // ignore
default:
logging.Infof("TapFeed: Ignoring %s", req.Opcode)
return nil // unknown event
}
if len(req.Extras) >= tapMutationExtraLen &&
(event.Opcode == TapMutation || event.Opcode == TapDeletion) {
event.Flags = binary.BigEndian.Uint32(req.Extras[8:])
event.Expiry = binary.BigEndian.Uint32(req.Extras[12:])
}
return &event
}
func (event TapEvent) String() string {
switch event.Opcode {
case TapBeginBackfill, TapEndBackfill, TapCheckpointStart, TapCheckpointEnd:
return fmt.Sprintf("<TapEvent %s, vbucket=%d>",
event.Opcode, event.VBucket)
default:
return fmt.Sprintf("<TapEvent %s, key=%q (%d bytes) flags=%x, exp=%d>",
event.Opcode, event.Key, len(event.Value),
event.Flags, event.Expiry)
}
}
// TapArguments are parameters for requesting a TAP feed.
//
// Call DefaultTapArguments to get a default one.
type TapArguments struct {
// Timestamp of oldest item to send.
//
// Use TapNoBackfill to suppress all past items.
Backfill uint64
// If set, server will disconnect after sending existing items.
Dump bool
// The indices of the vbuckets to watch; empty/nil to watch all.
VBuckets []uint16
// Transfers ownership of vbuckets during cluster rebalance.
Takeover bool
// If true, server will wait for client ACK after every notification.
SupportAck bool
// If true, client doesn't want values so server shouldn't send them.
KeysOnly bool
// If true, client wants the server to send checkpoint events.
Checkpoint bool
// Optional identifier to use for this client, to allow reconnects
ClientName string
// Registers this client (by name) till explicitly deregistered.
RegisteredClient bool
}
// Value for TapArguments.Backfill denoting that no past events at all
// should be sent.
const TapNoBackfill = math.MaxUint64
// DefaultTapArguments returns a default set of parameter values to
// pass to StartTapFeed.
func DefaultTapArguments() TapArguments {
return TapArguments{
Backfill: TapNoBackfill,
}
}
func (args *TapArguments) flags() []byte {
var flags gomemcached.TapConnectFlag
if args.Backfill != 0 {
flags |= gomemcached.BACKFILL
}
if args.Dump {
flags |= gomemcached.DUMP
}
if len(args.VBuckets) > 0 {
flags |= gomemcached.LIST_VBUCKETS
}
if args.Takeover {
flags |= gomemcached.TAKEOVER_VBUCKETS
}
if args.SupportAck {
flags |= gomemcached.SUPPORT_ACK
}
if args.KeysOnly {
flags |= gomemcached.REQUEST_KEYS_ONLY
}
if args.Checkpoint {
flags |= gomemcached.CHECKPOINT
}
if args.RegisteredClient {
flags |= gomemcached.REGISTERED_CLIENT
}
encoded := make([]byte, 4)
binary.BigEndian.PutUint32(encoded, uint32(flags))
return encoded
}
func must(err error) {
if err != nil {
panic(err)
}
}
func (args *TapArguments) bytes() (rv []byte) {
buf := bytes.NewBuffer([]byte{})
if args.Backfill > 0 {
must(binary.Write(buf, binary.BigEndian, uint64(args.Backfill)))
}
if len(args.VBuckets) > 0 {
must(binary.Write(buf, binary.BigEndian, uint16(len(args.VBuckets))))
for i := 0; i < len(args.VBuckets); i++ {
must(binary.Write(buf, binary.BigEndian, uint16(args.VBuckets[i])))
}
}
return buf.Bytes()
}
// TapFeed represents a stream of events from a server.
type TapFeed struct {
C <-chan TapEvent
Error error
closer chan bool
}
// StartTapFeed starts a TAP feed on a client connection.
//
// The events can be read from the returned channel. The connection
// can no longer be used for other purposes; it's now reserved for
// receiving the TAP messages. To stop receiving events, close the
// client connection.
func (mc *Client) StartTapFeed(args TapArguments) (*TapFeed, error) {
rq := &gomemcached.MCRequest{
Opcode: gomemcached.TAP_CONNECT,
Key: []byte(args.ClientName),
Extras: args.flags(),
Body: args.bytes()}
err := mc.Transmit(rq)
if err != nil {
return nil, err
}
ch := make(chan TapEvent)
feed := &TapFeed{
C: ch,
closer: make(chan bool),
}
go mc.runFeed(ch, feed)
return feed, nil
}
// TapRecvHook is called after every incoming tap packet is received.
var TapRecvHook func(*gomemcached.MCRequest, int, error)
// Internal goroutine that reads from the socket and writes events to
// the channel
func (mc *Client) runFeed(ch chan TapEvent, feed *TapFeed) {
defer close(ch)
var headerBuf [gomemcached.HDR_LEN]byte
loop:
for {
// Read the next request from the server.
//
// (Can't call mc.Receive() because it reads a
// _response_ not a request.)
var pkt gomemcached.MCRequest
n, err := pkt.Receive(mc.conn, headerBuf[:])
if TapRecvHook != nil {
TapRecvHook(&pkt, n, err)
}
if err != nil {
if err != io.EOF {
feed.Error = err
}
break loop
}
//logging.Infof("** TapFeed received %#v : %q", pkt, pkt.Body)
if pkt.Opcode == gomemcached.TAP_CONNECT {
// This is not an event from the server; it's
// an error response to my connect request.
feed.Error = fmt.Errorf("tap connection failed: %s", pkt.Body)
break loop
}
event := makeTapEvent(pkt)
if event != nil {
if event.Opcode == tapEndStream {
break loop
}
select {
case ch <- *event:
case <-feed.closer:
break loop
}
}
if len(pkt.Extras) >= 4 {
reqFlags := binary.BigEndian.Uint16(pkt.Extras[2:])
if reqFlags&gomemcached.TAP_ACK != 0 {
if _, err := mc.sendAck(&pkt); err != nil {
feed.Error = err
break loop
}
}
}
}
if err := mc.Close(); err != nil {
logging.Errorf("Error closing memcached client: %v", err)
}
}
func (mc *Client) sendAck(pkt *gomemcached.MCRequest) (int, error) {
res := gomemcached.MCResponse{
Opcode: pkt.Opcode,
Opaque: pkt.Opaque,
Status: gomemcached.SUCCESS,
}
return res.Transmit(mc.conn)
}
// Close terminates a TapFeed.
//
// Call this if you stop using a TapFeed before its channel ends.
func (feed *TapFeed) Close() {
close(feed.closer)
}

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vendor/github.com/couchbase/gomemcached/client/transport.go generated vendored Normal file
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package memcached
import (
"errors"
"io"
"github.com/couchbase/gomemcached"
)
var errNoConn = errors.New("no connection")
// UnwrapMemcachedError converts memcached errors to normal responses.
//
// If the error is a memcached response, declare the error to be nil
// so a client can handle the status without worrying about whether it
// indicates success or failure.
func UnwrapMemcachedError(rv *gomemcached.MCResponse,
err error) (*gomemcached.MCResponse, error) {
if rv == err {
return rv, nil
}
return rv, err
}
// ReceiveHook is called after every packet is received (or attempted to be)
var ReceiveHook func(*gomemcached.MCResponse, int, error)
func getResponse(s io.Reader, hdrBytes []byte) (rv *gomemcached.MCResponse, n int, err error) {
if s == nil {
return nil, 0, errNoConn
}
rv = &gomemcached.MCResponse{}
n, err = rv.Receive(s, hdrBytes)
if ReceiveHook != nil {
ReceiveHook(rv, n, err)
}
if err == nil && (rv.Status != gomemcached.SUCCESS && rv.Status != gomemcached.AUTH_CONTINUE) {
err = rv
}
return rv, n, err
}
// TransmitHook is called after each packet is transmitted.
var TransmitHook func(*gomemcached.MCRequest, int, error)
func transmitRequest(o io.Writer, req *gomemcached.MCRequest) (int, error) {
if o == nil {
return 0, errNoConn
}
n, err := req.Transmit(o)
if TransmitHook != nil {
TransmitHook(req, n, err)
}
return n, err
}
func transmitResponse(o io.Writer, res *gomemcached.MCResponse) (int, error) {
if o == nil {
return 0, errNoConn
}
n, err := res.Transmit(o)
return n, err
}

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vendor/github.com/couchbase/gomemcached/client/upr_feed.go generated vendored Normal file
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vendor/github.com/couchbase/gomemcached/mc_constants.go generated vendored Normal file
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// Package gomemcached is binary protocol packet formats and constants.
package gomemcached
import (
"fmt"
)
const (
REQ_MAGIC = 0x80
RES_MAGIC = 0x81
)
// CommandCode for memcached packets.
type CommandCode uint8
const (
GET = CommandCode(0x00)
SET = CommandCode(0x01)
ADD = CommandCode(0x02)
REPLACE = CommandCode(0x03)
DELETE = CommandCode(0x04)
INCREMENT = CommandCode(0x05)
DECREMENT = CommandCode(0x06)
QUIT = CommandCode(0x07)
FLUSH = CommandCode(0x08)
GETQ = CommandCode(0x09)
NOOP = CommandCode(0x0a)
VERSION = CommandCode(0x0b)
GETK = CommandCode(0x0c)
GETKQ = CommandCode(0x0d)
APPEND = CommandCode(0x0e)
PREPEND = CommandCode(0x0f)
STAT = CommandCode(0x10)
SETQ = CommandCode(0x11)
ADDQ = CommandCode(0x12)
REPLACEQ = CommandCode(0x13)
DELETEQ = CommandCode(0x14)
INCREMENTQ = CommandCode(0x15)
DECREMENTQ = CommandCode(0x16)
QUITQ = CommandCode(0x17)
FLUSHQ = CommandCode(0x18)
APPENDQ = CommandCode(0x19)
AUDIT = CommandCode(0x27)
PREPENDQ = CommandCode(0x1a)
GAT = CommandCode(0x1d)
HELLO = CommandCode(0x1f)
RGET = CommandCode(0x30)
RSET = CommandCode(0x31)
RSETQ = CommandCode(0x32)
RAPPEND = CommandCode(0x33)
RAPPENDQ = CommandCode(0x34)
RPREPEND = CommandCode(0x35)
RPREPENDQ = CommandCode(0x36)
RDELETE = CommandCode(0x37)
RDELETEQ = CommandCode(0x38)
RINCR = CommandCode(0x39)
RINCRQ = CommandCode(0x3a)
RDECR = CommandCode(0x3b)
RDECRQ = CommandCode(0x3c)
SASL_LIST_MECHS = CommandCode(0x20)
SASL_AUTH = CommandCode(0x21)
SASL_STEP = CommandCode(0x22)
SET_VBUCKET = CommandCode(0x3d)
TAP_CONNECT = CommandCode(0x40) // Client-sent request to initiate Tap feed
TAP_MUTATION = CommandCode(0x41) // Notification of a SET/ADD/REPLACE/etc. on the server
TAP_DELETE = CommandCode(0x42) // Notification of a DELETE on the server
TAP_FLUSH = CommandCode(0x43) // Replicates a flush_all command
TAP_OPAQUE = CommandCode(0x44) // Opaque control data from the engine
TAP_VBUCKET_SET = CommandCode(0x45) // Sets state of vbucket in receiver (used in takeover)
TAP_CHECKPOINT_START = CommandCode(0x46) // Notifies start of new checkpoint
TAP_CHECKPOINT_END = CommandCode(0x47) // Notifies end of checkpoint
UPR_OPEN = CommandCode(0x50) // Open a UPR connection with a name
UPR_ADDSTREAM = CommandCode(0x51) // Sent by ebucketMigrator to UPR Consumer
UPR_CLOSESTREAM = CommandCode(0x52) // Sent by eBucketMigrator to UPR Consumer
UPR_FAILOVERLOG = CommandCode(0x54) // Request failover logs
UPR_STREAMREQ = CommandCode(0x53) // Stream request from consumer to producer
UPR_STREAMEND = CommandCode(0x55) // Sent by producer when it has no more messages to stream
UPR_SNAPSHOT = CommandCode(0x56) // Start of a new snapshot
UPR_MUTATION = CommandCode(0x57) // Key mutation
UPR_DELETION = CommandCode(0x58) // Key deletion
UPR_EXPIRATION = CommandCode(0x59) // Key expiration
UPR_FLUSH = CommandCode(0x5a) // Delete all the data for a vbucket
UPR_NOOP = CommandCode(0x5c) // UPR NOOP
UPR_BUFFERACK = CommandCode(0x5d) // UPR Buffer Acknowledgement
UPR_CONTROL = CommandCode(0x5e) // Set flow control params
SELECT_BUCKET = CommandCode(0x89) // Select bucket
OBSERVE_SEQNO = CommandCode(0x91) // Sequence Number based Observe
OBSERVE = CommandCode(0x92)
GET_META = CommandCode(0xA0) // Get meta. returns with expiry, flags, cas etc
SUBDOC_GET = CommandCode(0xc5) // Get subdoc. Returns with xattrs
SUBDOC_MULTI_LOOKUP = CommandCode(0xd0) // Multi lookup. Doc xattrs and meta.
)
// command codes that are counted toward DCP control buffer
// when DCP clients receive DCP messages with these command codes, they need to provide acknowledgement
var BufferedCommandCodeMap = map[CommandCode]bool{
SET_VBUCKET: true,
UPR_STREAMEND: true,
UPR_SNAPSHOT: true,
UPR_MUTATION: true,
UPR_DELETION: true,
UPR_EXPIRATION: true}
// Status field for memcached response.
type Status uint16
// Matches with protocol_binary.h as source of truth
const (
SUCCESS = Status(0x00)
KEY_ENOENT = Status(0x01)
KEY_EEXISTS = Status(0x02)
E2BIG = Status(0x03)
EINVAL = Status(0x04)
NOT_STORED = Status(0x05)
DELTA_BADVAL = Status(0x06)
NOT_MY_VBUCKET = Status(0x07)
NO_BUCKET = Status(0x08)
LOCKED = Status(0x09)
AUTH_STALE = Status(0x1f)
AUTH_ERROR = Status(0x20)
AUTH_CONTINUE = Status(0x21)
ERANGE = Status(0x22)
ROLLBACK = Status(0x23)
EACCESS = Status(0x24)
NOT_INITIALIZED = Status(0x25)
UNKNOWN_COMMAND = Status(0x81)
ENOMEM = Status(0x82)
NOT_SUPPORTED = Status(0x83)
EINTERNAL = Status(0x84)
EBUSY = Status(0x85)
TMPFAIL = Status(0x86)
// SUBDOC
SUBDOC_PATH_NOT_FOUND = Status(0xc0)
SUBDOC_BAD_MULTI = Status(0xcc)
SUBDOC_MULTI_PATH_FAILURE_DELETED = Status(0xd3)
)
// for log redaction
const (
UdTagBegin = "<ud>"
UdTagEnd = "</ud>"
)
var isFatal = map[Status]bool{
DELTA_BADVAL: true,
NO_BUCKET: true,
AUTH_STALE: true,
AUTH_ERROR: true,
ERANGE: true,
ROLLBACK: true,
EACCESS: true,
ENOMEM: true,
NOT_SUPPORTED: true,
}
// the producer/consumer bit in dcp flags
var DCP_PRODUCER uint32 = 0x01
// the include XATTRS bit in dcp flags
var DCP_OPEN_INCLUDE_XATTRS uint32 = 0x04
// the include deletion time bit in dcp flags
var DCP_OPEN_INCLUDE_DELETE_TIMES uint32 = 0x20
// Datatype to Include XATTRS in SUBDOC GET
var SUBDOC_FLAG_XATTR uint8 = 0x04
// MCItem is an internal representation of an item.
type MCItem struct {
Cas uint64
Flags, Expiration uint32
Data []byte
}
// Number of bytes in a binary protocol header.
const HDR_LEN = 24
// Mapping of CommandCode -> name of command (not exhaustive)
var CommandNames map[CommandCode]string
// StatusNames human readable names for memcached response.
var StatusNames map[Status]string
func init() {
CommandNames = make(map[CommandCode]string)
CommandNames[GET] = "GET"
CommandNames[SET] = "SET"
CommandNames[ADD] = "ADD"
CommandNames[REPLACE] = "REPLACE"
CommandNames[DELETE] = "DELETE"
CommandNames[INCREMENT] = "INCREMENT"
CommandNames[DECREMENT] = "DECREMENT"
CommandNames[QUIT] = "QUIT"
CommandNames[FLUSH] = "FLUSH"
CommandNames[GETQ] = "GETQ"
CommandNames[NOOP] = "NOOP"
CommandNames[VERSION] = "VERSION"
CommandNames[GETK] = "GETK"
CommandNames[GETKQ] = "GETKQ"
CommandNames[APPEND] = "APPEND"
CommandNames[PREPEND] = "PREPEND"
CommandNames[STAT] = "STAT"
CommandNames[SETQ] = "SETQ"
CommandNames[ADDQ] = "ADDQ"
CommandNames[REPLACEQ] = "REPLACEQ"
CommandNames[DELETEQ] = "DELETEQ"
CommandNames[INCREMENTQ] = "INCREMENTQ"
CommandNames[DECREMENTQ] = "DECREMENTQ"
CommandNames[QUITQ] = "QUITQ"
CommandNames[FLUSHQ] = "FLUSHQ"
CommandNames[APPENDQ] = "APPENDQ"
CommandNames[PREPENDQ] = "PREPENDQ"
CommandNames[RGET] = "RGET"
CommandNames[RSET] = "RSET"
CommandNames[RSETQ] = "RSETQ"
CommandNames[RAPPEND] = "RAPPEND"
CommandNames[RAPPENDQ] = "RAPPENDQ"
CommandNames[RPREPEND] = "RPREPEND"
CommandNames[RPREPENDQ] = "RPREPENDQ"
CommandNames[RDELETE] = "RDELETE"
CommandNames[RDELETEQ] = "RDELETEQ"
CommandNames[RINCR] = "RINCR"
CommandNames[RINCRQ] = "RINCRQ"
CommandNames[RDECR] = "RDECR"
CommandNames[RDECRQ] = "RDECRQ"
CommandNames[SASL_LIST_MECHS] = "SASL_LIST_MECHS"
CommandNames[SASL_AUTH] = "SASL_AUTH"
CommandNames[SASL_STEP] = "SASL_STEP"
CommandNames[TAP_CONNECT] = "TAP_CONNECT"
CommandNames[TAP_MUTATION] = "TAP_MUTATION"
CommandNames[TAP_DELETE] = "TAP_DELETE"
CommandNames[TAP_FLUSH] = "TAP_FLUSH"
CommandNames[TAP_OPAQUE] = "TAP_OPAQUE"
CommandNames[TAP_VBUCKET_SET] = "TAP_VBUCKET_SET"
CommandNames[TAP_CHECKPOINT_START] = "TAP_CHECKPOINT_START"
CommandNames[TAP_CHECKPOINT_END] = "TAP_CHECKPOINT_END"
CommandNames[UPR_OPEN] = "UPR_OPEN"
CommandNames[UPR_ADDSTREAM] = "UPR_ADDSTREAM"
CommandNames[UPR_CLOSESTREAM] = "UPR_CLOSESTREAM"
CommandNames[UPR_FAILOVERLOG] = "UPR_FAILOVERLOG"
CommandNames[UPR_STREAMREQ] = "UPR_STREAMREQ"
CommandNames[UPR_STREAMEND] = "UPR_STREAMEND"
CommandNames[UPR_SNAPSHOT] = "UPR_SNAPSHOT"
CommandNames[UPR_MUTATION] = "UPR_MUTATION"
CommandNames[UPR_DELETION] = "UPR_DELETION"
CommandNames[UPR_EXPIRATION] = "UPR_EXPIRATION"
CommandNames[UPR_FLUSH] = "UPR_FLUSH"
CommandNames[UPR_NOOP] = "UPR_NOOP"
CommandNames[UPR_BUFFERACK] = "UPR_BUFFERACK"
CommandNames[UPR_CONTROL] = "UPR_CONTROL"
CommandNames[SUBDOC_GET] = "SUBDOC_GET"
CommandNames[SUBDOC_MULTI_LOOKUP] = "SUBDOC_MULTI_LOOKUP"
StatusNames = make(map[Status]string)
StatusNames[SUCCESS] = "SUCCESS"
StatusNames[KEY_ENOENT] = "KEY_ENOENT"
StatusNames[KEY_EEXISTS] = "KEY_EEXISTS"
StatusNames[E2BIG] = "E2BIG"
StatusNames[EINVAL] = "EINVAL"
StatusNames[NOT_STORED] = "NOT_STORED"
StatusNames[DELTA_BADVAL] = "DELTA_BADVAL"
StatusNames[NOT_MY_VBUCKET] = "NOT_MY_VBUCKET"
StatusNames[NO_BUCKET] = "NO_BUCKET"
StatusNames[AUTH_STALE] = "AUTH_STALE"
StatusNames[AUTH_ERROR] = "AUTH_ERROR"
StatusNames[AUTH_CONTINUE] = "AUTH_CONTINUE"
StatusNames[ERANGE] = "ERANGE"
StatusNames[ROLLBACK] = "ROLLBACK"
StatusNames[EACCESS] = "EACCESS"
StatusNames[NOT_INITIALIZED] = "NOT_INITIALIZED"
StatusNames[UNKNOWN_COMMAND] = "UNKNOWN_COMMAND"
StatusNames[ENOMEM] = "ENOMEM"
StatusNames[NOT_SUPPORTED] = "NOT_SUPPORTED"
StatusNames[EINTERNAL] = "EINTERNAL"
StatusNames[EBUSY] = "EBUSY"
StatusNames[TMPFAIL] = "TMPFAIL"
StatusNames[SUBDOC_PATH_NOT_FOUND] = "SUBDOC_PATH_NOT_FOUND"
StatusNames[SUBDOC_BAD_MULTI] = "SUBDOC_BAD_MULTI"
}
// String an op code.
func (o CommandCode) String() (rv string) {
rv = CommandNames[o]
if rv == "" {
rv = fmt.Sprintf("0x%02x", int(o))
}
return rv
}
// String an op code.
func (s Status) String() (rv string) {
rv = StatusNames[s]
if rv == "" {
rv = fmt.Sprintf("0x%02x", int(s))
}
return rv
}
// IsQuiet will return true if a command is a "quiet" command.
func (o CommandCode) IsQuiet() bool {
switch o {
case GETQ,
GETKQ,
SETQ,
ADDQ,
REPLACEQ,
DELETEQ,
INCREMENTQ,
DECREMENTQ,
QUITQ,
FLUSHQ,
APPENDQ,
PREPENDQ,
RSETQ,
RAPPENDQ,
RPREPENDQ,
RDELETEQ,
RINCRQ,
RDECRQ:
return true
}
return false
}

197
vendor/github.com/couchbase/gomemcached/mc_req.go generated vendored Normal file
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@ -0,0 +1,197 @@
package gomemcached
import (
"encoding/binary"
"fmt"
"io"
)
// The maximum reasonable body length to expect.
// Anything larger than this will result in an error.
// The current limit, 20MB, is the size limit supported by ep-engine.
var MaxBodyLen = int(20 * 1024 * 1024)
// MCRequest is memcached Request
type MCRequest struct {
// The command being issued
Opcode CommandCode
// The CAS (if applicable, or 0)
Cas uint64
// An opaque value to be returned with this request
Opaque uint32
// The vbucket to which this command belongs
VBucket uint16
// Command extras, key, and body
Extras, Key, Body, ExtMeta []byte
// Datatype identifier
DataType uint8
}
// Size gives the number of bytes this request requires.
func (req *MCRequest) Size() int {
return HDR_LEN + len(req.Extras) + len(req.Key) + len(req.Body) + len(req.ExtMeta)
}
// A debugging string representation of this request
func (req MCRequest) String() string {
return fmt.Sprintf("{MCRequest opcode=%s, bodylen=%d, key='%s'}",
req.Opcode, len(req.Body), req.Key)
}
func (req *MCRequest) fillHeaderBytes(data []byte) int {
pos := 0
data[pos] = REQ_MAGIC
pos++
data[pos] = byte(req.Opcode)
pos++
binary.BigEndian.PutUint16(data[pos:pos+2],
uint16(len(req.Key)))
pos += 2
// 4
data[pos] = byte(len(req.Extras))
pos++
// Data type
if req.DataType != 0 {
data[pos] = byte(req.DataType)
}
pos++
binary.BigEndian.PutUint16(data[pos:pos+2], req.VBucket)
pos += 2
// 8
binary.BigEndian.PutUint32(data[pos:pos+4],
uint32(len(req.Body)+len(req.Key)+len(req.Extras)+len(req.ExtMeta)))
pos += 4
// 12
binary.BigEndian.PutUint32(data[pos:pos+4], req.Opaque)
pos += 4
// 16
if req.Cas != 0 {
binary.BigEndian.PutUint64(data[pos:pos+8], req.Cas)
}
pos += 8
if len(req.Extras) > 0 {
copy(data[pos:pos+len(req.Extras)], req.Extras)
pos += len(req.Extras)
}
if len(req.Key) > 0 {
copy(data[pos:pos+len(req.Key)], req.Key)
pos += len(req.Key)
}
return pos
}
// HeaderBytes will return the wire representation of the request header
// (with the extras and key).
func (req *MCRequest) HeaderBytes() []byte {
data := make([]byte, HDR_LEN+len(req.Extras)+len(req.Key))
req.fillHeaderBytes(data)
return data
}
// Bytes will return the wire representation of this request.
func (req *MCRequest) Bytes() []byte {
data := make([]byte, req.Size())
pos := req.fillHeaderBytes(data)
if len(req.Body) > 0 {
copy(data[pos:pos+len(req.Body)], req.Body)
}
if len(req.ExtMeta) > 0 {
copy(data[pos+len(req.Body):pos+len(req.Body)+len(req.ExtMeta)], req.ExtMeta)
}
return data
}
// Transmit will send this request message across a writer.
func (req *MCRequest) Transmit(w io.Writer) (n int, err error) {
if len(req.Body) < 128 {
n, err = w.Write(req.Bytes())
} else {
n, err = w.Write(req.HeaderBytes())
if err == nil {
m := 0
m, err = w.Write(req.Body)
n += m
}
}
return
}
// Receive will fill this MCRequest with the data from a reader.
func (req *MCRequest) Receive(r io.Reader, hdrBytes []byte) (int, error) {
if len(hdrBytes) < HDR_LEN {
hdrBytes = []byte{
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0}
}
n, err := io.ReadFull(r, hdrBytes)
if err != nil {
return n, err
}
if hdrBytes[0] != RES_MAGIC && hdrBytes[0] != REQ_MAGIC {
return n, fmt.Errorf("bad magic: 0x%02x", hdrBytes[0])
}
klen := int(binary.BigEndian.Uint16(hdrBytes[2:]))
elen := int(hdrBytes[4])
// Data type at 5
req.DataType = uint8(hdrBytes[5])
req.Opcode = CommandCode(hdrBytes[1])
// Vbucket at 6:7
req.VBucket = binary.BigEndian.Uint16(hdrBytes[6:])
totalBodyLen := int(binary.BigEndian.Uint32(hdrBytes[8:]))
req.Opaque = binary.BigEndian.Uint32(hdrBytes[12:])
req.Cas = binary.BigEndian.Uint64(hdrBytes[16:])
if totalBodyLen > 0 {
buf := make([]byte, totalBodyLen)
m, err := io.ReadFull(r, buf)
n += m
if err == nil {
if req.Opcode >= TAP_MUTATION &&
req.Opcode <= TAP_CHECKPOINT_END &&
len(buf) > 1 {
// In these commands there is "engine private"
// data at the end of the extras. The first 2
// bytes of extra data give its length.
elen += int(binary.BigEndian.Uint16(buf))
}
req.Extras = buf[0:elen]
req.Key = buf[elen : klen+elen]
// get the length of extended metadata
extMetaLen := 0
if elen > 29 {
extMetaLen = int(binary.BigEndian.Uint16(req.Extras[28:30]))
}
bodyLen := totalBodyLen - klen - elen - extMetaLen
if bodyLen > MaxBodyLen {
return n, fmt.Errorf("%d is too big (max %d)",
bodyLen, MaxBodyLen)
}
req.Body = buf[klen+elen : klen+elen+bodyLen]
req.ExtMeta = buf[klen+elen+bodyLen:]
}
}
return n, err
}

267
vendor/github.com/couchbase/gomemcached/mc_res.go generated vendored Normal file
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package gomemcached
import (
"encoding/binary"
"fmt"
"io"
"sync"
)
// MCResponse is memcached response
type MCResponse struct {
// The command opcode of the command that sent the request
Opcode CommandCode
// The status of the response
Status Status
// The opaque sent in the request
Opaque uint32
// The CAS identifier (if applicable)
Cas uint64
// Extras, key, and body for this response
Extras, Key, Body []byte
// If true, this represents a fatal condition and we should hang up
Fatal bool
// Datatype identifier
DataType uint8
}
// A debugging string representation of this response
func (res MCResponse) String() string {
return fmt.Sprintf("{MCResponse status=%v keylen=%d, extralen=%d, bodylen=%d}",
res.Status, len(res.Key), len(res.Extras), len(res.Body))
}
// Response as an error.
func (res *MCResponse) Error() string {
return fmt.Sprintf("MCResponse status=%v, opcode=%v, opaque=%v, msg: %s",
res.Status, res.Opcode, res.Opaque, string(res.Body))
}
func errStatus(e error) Status {
status := Status(0xffff)
if res, ok := e.(*MCResponse); ok {
status = res.Status
}
return status
}
// IsNotFound is true if this error represents a "not found" response.
func IsNotFound(e error) bool {
return errStatus(e) == KEY_ENOENT
}
// IsFatal is false if this error isn't believed to be fatal to a connection.
func IsFatal(e error) bool {
if e == nil {
return false
}
_, ok := isFatal[errStatus(e)]
if ok {
return true
}
return false
}
// Size is number of bytes this response consumes on the wire.
func (res *MCResponse) Size() int {
return HDR_LEN + len(res.Extras) + len(res.Key) + len(res.Body)
}
func (res *MCResponse) fillHeaderBytes(data []byte) int {
pos := 0
data[pos] = RES_MAGIC
pos++
data[pos] = byte(res.Opcode)
pos++
binary.BigEndian.PutUint16(data[pos:pos+2],
uint16(len(res.Key)))
pos += 2
// 4
data[pos] = byte(len(res.Extras))
pos++
// Data type
if res.DataType != 0 {
data[pos] = byte(res.DataType)
} else {
data[pos] = 0
}
pos++
binary.BigEndian.PutUint16(data[pos:pos+2], uint16(res.Status))
pos += 2
// 8
binary.BigEndian.PutUint32(data[pos:pos+4],
uint32(len(res.Body)+len(res.Key)+len(res.Extras)))
pos += 4
// 12
binary.BigEndian.PutUint32(data[pos:pos+4], res.Opaque)
pos += 4
// 16
binary.BigEndian.PutUint64(data[pos:pos+8], res.Cas)
pos += 8
if len(res.Extras) > 0 {
copy(data[pos:pos+len(res.Extras)], res.Extras)
pos += len(res.Extras)
}
if len(res.Key) > 0 {
copy(data[pos:pos+len(res.Key)], res.Key)
pos += len(res.Key)
}
return pos
}
// HeaderBytes will get just the header bytes for this response.
func (res *MCResponse) HeaderBytes() []byte {
data := make([]byte, HDR_LEN+len(res.Extras)+len(res.Key))
res.fillHeaderBytes(data)
return data
}
// Bytes will return the actual bytes transmitted for this response.
func (res *MCResponse) Bytes() []byte {
data := make([]byte, res.Size())
pos := res.fillHeaderBytes(data)
copy(data[pos:pos+len(res.Body)], res.Body)
return data
}
// Transmit will send this response message across a writer.
func (res *MCResponse) Transmit(w io.Writer) (n int, err error) {
if len(res.Body) < 128 {
n, err = w.Write(res.Bytes())
} else {
n, err = w.Write(res.HeaderBytes())
if err == nil {
m := 0
m, err = w.Write(res.Body)
m += n
}
}
return
}
// Receive will fill this MCResponse with the data from this reader.
func (res *MCResponse) Receive(r io.Reader, hdrBytes []byte) (n int, err error) {
if len(hdrBytes) < HDR_LEN {
hdrBytes = []byte{
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0}
}
n, err = io.ReadFull(r, hdrBytes)
if err != nil {
return n, err
}
if hdrBytes[0] != RES_MAGIC && hdrBytes[0] != REQ_MAGIC {
return n, fmt.Errorf("bad magic: 0x%02x", hdrBytes[0])
}
klen := int(binary.BigEndian.Uint16(hdrBytes[2:4]))
elen := int(hdrBytes[4])
res.Opcode = CommandCode(hdrBytes[1])
res.DataType = uint8(hdrBytes[5])
res.Status = Status(binary.BigEndian.Uint16(hdrBytes[6:8]))
res.Opaque = binary.BigEndian.Uint32(hdrBytes[12:16])
res.Cas = binary.BigEndian.Uint64(hdrBytes[16:24])
bodyLen := int(binary.BigEndian.Uint32(hdrBytes[8:12])) - (klen + elen)
//defer function to debug the panic seen with MB-15557
defer func() {
if e := recover(); e != nil {
err = fmt.Errorf(`Panic in Receive. Response %v \n
key len %v extra len %v bodylen %v`, res, klen, elen, bodyLen)
}
}()
buf := make([]byte, klen+elen+bodyLen)
m, err := io.ReadFull(r, buf)
if err == nil {
res.Extras = buf[0:elen]
res.Key = buf[elen : klen+elen]
res.Body = buf[klen+elen:]
}
return n + m, err
}
type MCResponsePool struct {
pool *sync.Pool
}
func NewMCResponsePool() *MCResponsePool {
rv := &MCResponsePool{
pool: &sync.Pool{
New: func() interface{} {
return &MCResponse{}
},
},
}
return rv
}
func (this *MCResponsePool) Get() *MCResponse {
return this.pool.Get().(*MCResponse)
}
func (this *MCResponsePool) Put(r *MCResponse) {
if r == nil {
return
}
r.Extras = nil
r.Key = nil
r.Body = nil
r.Fatal = false
this.pool.Put(r)
}
type StringMCResponsePool struct {
pool *sync.Pool
size int
}
func NewStringMCResponsePool(size int) *StringMCResponsePool {
rv := &StringMCResponsePool{
pool: &sync.Pool{
New: func() interface{} {
return make(map[string]*MCResponse, size)
},
},
size: size,
}
return rv
}
func (this *StringMCResponsePool) Get() map[string]*MCResponse {
return this.pool.Get().(map[string]*MCResponse)
}
func (this *StringMCResponsePool) Put(m map[string]*MCResponse) {
if m == nil || len(m) > 2*this.size {
return
}
for k := range m {
m[k] = nil
delete(m, k)
}
this.pool.Put(m)
}

168
vendor/github.com/couchbase/gomemcached/tap.go generated vendored Normal file
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@ -0,0 +1,168 @@
package gomemcached
import (
"bytes"
"encoding/binary"
"fmt"
"io"
"io/ioutil"
"strings"
)
type TapConnectFlag uint32
// Tap connect option flags
const (
BACKFILL = TapConnectFlag(0x01)
DUMP = TapConnectFlag(0x02)
LIST_VBUCKETS = TapConnectFlag(0x04)
TAKEOVER_VBUCKETS = TapConnectFlag(0x08)
SUPPORT_ACK = TapConnectFlag(0x10)
REQUEST_KEYS_ONLY = TapConnectFlag(0x20)
CHECKPOINT = TapConnectFlag(0x40)
REGISTERED_CLIENT = TapConnectFlag(0x80)
FIX_FLAG_BYTEORDER = TapConnectFlag(0x100)
)
// Tap opaque event subtypes
const (
TAP_OPAQUE_ENABLE_AUTO_NACK = 0
TAP_OPAQUE_INITIAL_VBUCKET_STREAM = 1
TAP_OPAQUE_ENABLE_CHECKPOINT_SYNC = 2
TAP_OPAQUE_CLOSE_TAP_STREAM = 7
TAP_OPAQUE_CLOSE_BACKFILL = 8
)
// Tap item flags
const (
TAP_ACK = 1
TAP_NO_VALUE = 2
TAP_FLAG_NETWORK_BYTE_ORDER = 4
)
// TapConnectFlagNames for TapConnectFlag
var TapConnectFlagNames = map[TapConnectFlag]string{
BACKFILL: "BACKFILL",
DUMP: "DUMP",
LIST_VBUCKETS: "LIST_VBUCKETS",
TAKEOVER_VBUCKETS: "TAKEOVER_VBUCKETS",
SUPPORT_ACK: "SUPPORT_ACK",
REQUEST_KEYS_ONLY: "REQUEST_KEYS_ONLY",
CHECKPOINT: "CHECKPOINT",
REGISTERED_CLIENT: "REGISTERED_CLIENT",
FIX_FLAG_BYTEORDER: "FIX_FLAG_BYTEORDER",
}
// TapItemParser is a function to parse a single tap extra.
type TapItemParser func(io.Reader) (interface{}, error)
// TapParseUint64 is a function to parse a single tap uint64.
func TapParseUint64(r io.Reader) (interface{}, error) {
var rv uint64
err := binary.Read(r, binary.BigEndian, &rv)
return rv, err
}
// TapParseUint16 is a function to parse a single tap uint16.
func TapParseUint16(r io.Reader) (interface{}, error) {
var rv uint16
err := binary.Read(r, binary.BigEndian, &rv)
return rv, err
}
// TapParseBool is a function to parse a single tap boolean.
func TapParseBool(r io.Reader) (interface{}, error) {
return true, nil
}
// TapParseVBList parses a list of vBucket numbers as []uint16.
func TapParseVBList(r io.Reader) (interface{}, error) {
num, err := TapParseUint16(r)
if err != nil {
return nil, err
}
n := int(num.(uint16))
rv := make([]uint16, n)
for i := 0; i < n; i++ {
x, err := TapParseUint16(r)
if err != nil {
return nil, err
}
rv[i] = x.(uint16)
}
return rv, err
}
// TapFlagParsers parser functions for TAP fields.
var TapFlagParsers = map[TapConnectFlag]TapItemParser{
BACKFILL: TapParseUint64,
LIST_VBUCKETS: TapParseVBList,
}
// SplitFlags will split the ORed flags into the individual bit flags.
func (f TapConnectFlag) SplitFlags() []TapConnectFlag {
rv := []TapConnectFlag{}
for i := uint32(1); f != 0; i = i << 1 {
if uint32(f)&i == i {
rv = append(rv, TapConnectFlag(i))
}
f = TapConnectFlag(uint32(f) & (^i))
}
return rv
}
func (f TapConnectFlag) String() string {
parts := []string{}
for _, x := range f.SplitFlags() {
p := TapConnectFlagNames[x]
if p == "" {
p = fmt.Sprintf("0x%x", int(x))
}
parts = append(parts, p)
}
return strings.Join(parts, "|")
}
type TapConnect struct {
Flags map[TapConnectFlag]interface{}
RemainingBody []byte
Name string
}
// ParseTapCommands parse the tap request into the interesting bits we may
// need to do something with.
func (req *MCRequest) ParseTapCommands() (TapConnect, error) {
rv := TapConnect{
Flags: map[TapConnectFlag]interface{}{},
Name: string(req.Key),
}
if len(req.Extras) < 4 {
return rv, fmt.Errorf("not enough extra bytes: %x", req.Extras)
}
flags := TapConnectFlag(binary.BigEndian.Uint32(req.Extras))
r := bytes.NewReader(req.Body)
for _, f := range flags.SplitFlags() {
fun := TapFlagParsers[f]
if fun == nil {
fun = TapParseBool
}
val, err := fun(r)
if err != nil {
return rv, err
}
rv.Flags[f] = val
}
var err error
rv.RemainingBody, err = ioutil.ReadAll(r)
return rv, err
}

47
vendor/github.com/couchbase/goutils/LICENSE.md generated vendored Normal file
View file

@ -0,0 +1,47 @@
COUCHBASE INC. COMMUNITY EDITION LICENSE AGREEMENT
IMPORTANT-READ CAREFULLY: BY CLICKING THE "I ACCEPT" BOX OR INSTALLING,
DOWNLOADING OR OTHERWISE USING THIS SOFTWARE AND ANY ASSOCIATED
DOCUMENTATION, YOU, ON BEHALF OF YOURSELF OR AS AN AUTHORIZED
REPRESENTATIVE ON BEHALF OF AN ENTITY ("LICENSEE") AGREE TO ALL THE
TERMS OF THIS COMMUNITY EDITION LICENSE AGREEMENT (THE "AGREEMENT")
REGARDING YOUR USE OF THE SOFTWARE. YOU REPRESENT AND WARRANT THAT YOU
HAVE FULL LEGAL AUTHORITY TO BIND THE LICENSEE TO THIS AGREEMENT. IF YOU
DO NOT AGREE WITH ALL OF THESE TERMS, DO NOT SELECT THE "I ACCEPT" BOX
AND DO NOT INSTALL, DOWNLOAD OR OTHERWISE USE THE SOFTWARE. THE
EFFECTIVE DATE OF THIS AGREEMENT IS THE DATE ON WHICH YOU CLICK "I
ACCEPT" OR OTHERWISE INSTALL, DOWNLOAD OR USE THE SOFTWARE.
1. License Grant. Couchbase Inc. hereby grants Licensee, free of charge,
the non-exclusive right to use, copy, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to permit persons to
whom the Software is furnished to do so, subject to Licensee including
the following copyright notice in all copies or substantial portions of
the Software:
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the applicable elastic data management server software provided by
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2. Restrictions. Licensee will not reverse engineer, disassemble, or
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481
vendor/github.com/couchbase/goutils/logging/logger.go generated vendored Normal file
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// Copyright (c) 2016 Couchbase, Inc.
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
// except in compliance with the License. You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software distributed under the
// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
// either express or implied. See the License for the specific language governing permissions
// and limitations under the License.
package logging
import (
"os"
"runtime"
"strings"
"sync"
)
type Level int
const (
NONE = Level(iota) // Disable all logging
FATAL // System is in severe error state and has to abort
SEVERE // System is in severe error state and cannot recover reliably
ERROR // System is in error state but can recover and continue reliably
WARN // System approaching error state, or is in a correct but undesirable state
INFO // System-level events and status, in correct states
REQUEST // Request-level events, with request-specific rlevel
TRACE // Trace detailed system execution, e.g. function entry / exit
DEBUG // Debug
)
type LogEntryFormatter int
const (
TEXTFORMATTER = LogEntryFormatter(iota)
JSONFORMATTER
KVFORMATTER
)
func (level Level) String() string {
return _LEVEL_NAMES[level]
}
var _LEVEL_NAMES = []string{
DEBUG: "DEBUG",
TRACE: "TRACE",
REQUEST: "REQUEST",
INFO: "INFO",
WARN: "WARN",
ERROR: "ERROR",
SEVERE: "SEVERE",
FATAL: "FATAL",
NONE: "NONE",
}
var _LEVEL_MAP = map[string]Level{
"debug": DEBUG,
"trace": TRACE,
"request": REQUEST,
"info": INFO,
"warn": WARN,
"error": ERROR,
"severe": SEVERE,
"fatal": FATAL,
"none": NONE,
}
func ParseLevel(name string) (level Level, ok bool) {
level, ok = _LEVEL_MAP[strings.ToLower(name)]
return
}
/*
Pair supports logging of key-value pairs. Keys beginning with _ are
reserved for the logger, e.g. _time, _level, _msg, and _rlevel. The
Pair APIs are designed to avoid heap allocation and garbage
collection.
*/
type Pairs []Pair
type Pair struct {
Name string
Value interface{}
}
/*
Map allows key-value pairs to be specified using map literals or data
structures. For example:
Errorm(msg, Map{...})
Map incurs heap allocation and garbage collection, so the Pair APIs
should be preferred.
*/
type Map map[string]interface{}
// Logger provides a common interface for logging libraries
type Logger interface {
/*
These APIs write all the given pairs in addition to standard logger keys.
*/
Logp(level Level, msg string, kv ...Pair)
Debugp(msg string, kv ...Pair)
Tracep(msg string, kv ...Pair)
Requestp(rlevel Level, msg string, kv ...Pair)
Infop(msg string, kv ...Pair)
Warnp(msg string, kv ...Pair)
Errorp(msg string, kv ...Pair)
Severep(msg string, kv ...Pair)
Fatalp(msg string, kv ...Pair)
/*
These APIs write the fields in the given kv Map in addition to standard logger keys.
*/
Logm(level Level, msg string, kv Map)
Debugm(msg string, kv Map)
Tracem(msg string, kv Map)
Requestm(rlevel Level, msg string, kv Map)
Infom(msg string, kv Map)
Warnm(msg string, kv Map)
Errorm(msg string, kv Map)
Severem(msg string, kv Map)
Fatalm(msg string, kv Map)
/*
These APIs only write _msg, _time, _level, and other logger keys. If
the msg contains other fields, use the Pair or Map APIs instead.
*/
Logf(level Level, fmt string, args ...interface{})
Debugf(fmt string, args ...interface{})
Tracef(fmt string, args ...interface{})
Requestf(rlevel Level, fmt string, args ...interface{})
Infof(fmt string, args ...interface{})
Warnf(fmt string, args ...interface{})
Errorf(fmt string, args ...interface{})
Severef(fmt string, args ...interface{})
Fatalf(fmt string, args ...interface{})
/*
These APIs control the logging level
*/
SetLevel(Level) // Set the logging level
Level() Level // Get the current logging level
}
var logger Logger = nil
var curLevel Level = DEBUG // initially set to never skip
var loggerMutex sync.RWMutex
// All the methods below first acquire the mutex (mostly in exclusive mode)
// and only then check if logging at the current level is enabled.
// This introduces a fair bottleneck for those log entries that should be
// skipped (the majority, at INFO or below levels)
// We try to predict here if we should lock the mutex at all by caching
// the current log level: while dynamically changing logger, there might
// be the odd entry skipped as the new level is cached.
// Since we seem to never change the logger, this is not an issue.
func skipLogging(level Level) bool {
if logger == nil {
return true
}
return level > curLevel
}
func SetLogger(newLogger Logger) {
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger = newLogger
if logger == nil {
curLevel = NONE
} else {
curLevel = newLogger.Level()
}
}
func Logp(level Level, msg string, kv ...Pair) {
if skipLogging(level) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Logp(level, msg, kv...)
}
func Debugp(msg string, kv ...Pair) {
if skipLogging(DEBUG) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Debugp(msg, kv...)
}
func Tracep(msg string, kv ...Pair) {
if skipLogging(TRACE) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Tracep(msg, kv...)
}
func Requestp(rlevel Level, msg string, kv ...Pair) {
if skipLogging(REQUEST) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Requestp(rlevel, msg, kv...)
}
func Infop(msg string, kv ...Pair) {
if skipLogging(INFO) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Infop(msg, kv...)
}
func Warnp(msg string, kv ...Pair) {
if skipLogging(WARN) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Warnp(msg, kv...)
}
func Errorp(msg string, kv ...Pair) {
if skipLogging(ERROR) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Errorp(msg, kv...)
}
func Severep(msg string, kv ...Pair) {
if skipLogging(SEVERE) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Severep(msg, kv...)
}
func Fatalp(msg string, kv ...Pair) {
if skipLogging(FATAL) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Fatalp(msg, kv...)
}
func Logm(level Level, msg string, kv Map) {
if skipLogging(level) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Logm(level, msg, kv)
}
func Debugm(msg string, kv Map) {
if skipLogging(DEBUG) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Debugm(msg, kv)
}
func Tracem(msg string, kv Map) {
if skipLogging(TRACE) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Tracem(msg, kv)
}
func Requestm(rlevel Level, msg string, kv Map) {
if skipLogging(REQUEST) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Requestm(rlevel, msg, kv)
}
func Infom(msg string, kv Map) {
if skipLogging(INFO) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Infom(msg, kv)
}
func Warnm(msg string, kv Map) {
if skipLogging(WARN) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Warnm(msg, kv)
}
func Errorm(msg string, kv Map) {
if skipLogging(ERROR) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Errorm(msg, kv)
}
func Severem(msg string, kv Map) {
if skipLogging(SEVERE) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Severem(msg, kv)
}
func Fatalm(msg string, kv Map) {
if skipLogging(FATAL) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Fatalm(msg, kv)
}
func Logf(level Level, fmt string, args ...interface{}) {
if skipLogging(level) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Logf(level, fmt, args...)
}
func Debugf(fmt string, args ...interface{}) {
if skipLogging(DEBUG) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Debugf(fmt, args...)
}
func Tracef(fmt string, args ...interface{}) {
if skipLogging(TRACE) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Tracef(fmt, args...)
}
func Requestf(rlevel Level, fmt string, args ...interface{}) {
if skipLogging(REQUEST) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Requestf(rlevel, fmt, args...)
}
func Infof(fmt string, args ...interface{}) {
if skipLogging(INFO) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Infof(fmt, args...)
}
func Warnf(fmt string, args ...interface{}) {
if skipLogging(WARN) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Warnf(fmt, args...)
}
func Errorf(fmt string, args ...interface{}) {
if skipLogging(ERROR) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Errorf(fmt, args...)
}
func Severef(fmt string, args ...interface{}) {
if skipLogging(SEVERE) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Severef(fmt, args...)
}
func Fatalf(fmt string, args ...interface{}) {
if skipLogging(FATAL) {
return
}
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Fatalf(fmt, args...)
}
func SetLevel(level Level) {
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.SetLevel(level)
curLevel = level
}
func LogLevel() Level {
loggerMutex.RLock()
defer loggerMutex.RUnlock()
return logger.Level()
}
func Stackf(level Level, fmt string, args ...interface{}) {
if skipLogging(level) {
return
}
buf := make([]byte, 1<<16)
n := runtime.Stack(buf, false)
s := string(buf[0:n])
loggerMutex.Lock()
defer loggerMutex.Unlock()
logger.Logf(level, fmt, args...)
logger.Logf(level, s)
}
func init() {
logger = NewLogger(os.Stderr, INFO, TEXTFORMATTER)
SetLogger(logger)
}

318
vendor/github.com/couchbase/goutils/logging/logger_golog.go generated vendored Normal file
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// Copyright (c) 2016 Couchbase, Inc.
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
// except in compliance with the License. You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software distributed under the
// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
// either express or implied. See the License for the specific language governing permissions
// and limitations under the License.
package logging
import (
"bytes"
"encoding/json"
"fmt"
"io"
"log"
"time"
)
type goLogger struct {
logger *log.Logger
level Level
entryFormatter formatter
}
const (
_LEVEL = "_level"
_MSG = "_msg"
_TIME = "_time"
_RLEVEL = "_rlevel"
)
func NewLogger(out io.Writer, lvl Level, fmtLogging LogEntryFormatter) *goLogger {
logger := &goLogger{
logger: log.New(out, "", 0),
level: lvl,
}
if fmtLogging == JSONFORMATTER {
logger.entryFormatter = &jsonFormatter{}
} else if fmtLogging == KVFORMATTER {
logger.entryFormatter = &keyvalueFormatter{}
} else {
logger.entryFormatter = &textFormatter{}
}
return logger
}
func (gl *goLogger) Logp(level Level, msg string, kv ...Pair) {
if gl.logger == nil {
return
}
if level <= gl.level {
e := newLogEntry(msg, level)
copyPairs(e, kv)
gl.log(e)
}
}
func (gl *goLogger) Debugp(msg string, kv ...Pair) {
gl.Logp(DEBUG, msg, kv...)
}
func (gl *goLogger) Tracep(msg string, kv ...Pair) {
gl.Logp(TRACE, msg, kv...)
}
func (gl *goLogger) Requestp(rlevel Level, msg string, kv ...Pair) {
if gl.logger == nil {
return
}
if REQUEST <= gl.level {
e := newLogEntry(msg, REQUEST)
e.Rlevel = rlevel
copyPairs(e, kv)
gl.log(e)
}
}
func (gl *goLogger) Infop(msg string, kv ...Pair) {
gl.Logp(INFO, msg, kv...)
}
func (gl *goLogger) Warnp(msg string, kv ...Pair) {
gl.Logp(WARN, msg, kv...)
}
func (gl *goLogger) Errorp(msg string, kv ...Pair) {
gl.Logp(ERROR, msg, kv...)
}
func (gl *goLogger) Severep(msg string, kv ...Pair) {
gl.Logp(SEVERE, msg, kv...)
}
func (gl *goLogger) Fatalp(msg string, kv ...Pair) {
gl.Logp(FATAL, msg, kv...)
}
func (gl *goLogger) Logm(level Level, msg string, kv Map) {
if gl.logger == nil {
return
}
if level <= gl.level {
e := newLogEntry(msg, level)
e.Data = kv
gl.log(e)
}
}
func (gl *goLogger) Debugm(msg string, kv Map) {
gl.Logm(DEBUG, msg, kv)
}
func (gl *goLogger) Tracem(msg string, kv Map) {
gl.Logm(TRACE, msg, kv)
}
func (gl *goLogger) Requestm(rlevel Level, msg string, kv Map) {
if gl.logger == nil {
return
}
if REQUEST <= gl.level {
e := newLogEntry(msg, REQUEST)
e.Rlevel = rlevel
e.Data = kv
gl.log(e)
}
}
func (gl *goLogger) Infom(msg string, kv Map) {
gl.Logm(INFO, msg, kv)
}
func (gl *goLogger) Warnm(msg string, kv Map) {
gl.Logm(WARN, msg, kv)
}
func (gl *goLogger) Errorm(msg string, kv Map) {
gl.Logm(ERROR, msg, kv)
}
func (gl *goLogger) Severem(msg string, kv Map) {
gl.Logm(SEVERE, msg, kv)
}
func (gl *goLogger) Fatalm(msg string, kv Map) {
gl.Logm(FATAL, msg, kv)
}
func (gl *goLogger) Logf(level Level, format string, args ...interface{}) {
if gl.logger == nil {
return
}
if level <= gl.level {
e := newLogEntry(fmt.Sprintf(format, args...), level)
gl.log(e)
}
}
func (gl *goLogger) Debugf(format string, args ...interface{}) {
gl.Logf(DEBUG, format, args...)
}
func (gl *goLogger) Tracef(format string, args ...interface{}) {
gl.Logf(TRACE, format, args...)
}
func (gl *goLogger) Requestf(rlevel Level, format string, args ...interface{}) {
if gl.logger == nil {
return
}
if REQUEST <= gl.level {
e := newLogEntry(fmt.Sprintf(format, args...), REQUEST)
e.Rlevel = rlevel
gl.log(e)
}
}
func (gl *goLogger) Infof(format string, args ...interface{}) {
gl.Logf(INFO, format, args...)
}
func (gl *goLogger) Warnf(format string, args ...interface{}) {
gl.Logf(WARN, format, args...)
}
func (gl *goLogger) Errorf(format string, args ...interface{}) {
gl.Logf(ERROR, format, args...)
}
func (gl *goLogger) Severef(format string, args ...interface{}) {
gl.Logf(SEVERE, format, args...)
}
func (gl *goLogger) Fatalf(format string, args ...interface{}) {
gl.Logf(FATAL, format, args...)
}
func (gl *goLogger) Level() Level {
return gl.level
}
func (gl *goLogger) SetLevel(level Level) {
gl.level = level
}
func (gl *goLogger) log(newEntry *logEntry) {
s := gl.entryFormatter.format(newEntry)
gl.logger.Print(s)
}
type logEntry struct {
Time string
Level Level
Rlevel Level
Message string
Data Map
}
func newLogEntry(msg string, level Level) *logEntry {
return &logEntry{
Time: time.Now().Format("2006-01-02T15:04:05.000-07:00"), // time.RFC3339 with milliseconds
Level: level,
Rlevel: NONE,
Message: msg,
}
}
func copyPairs(newEntry *logEntry, pairs []Pair) {
newEntry.Data = make(Map, len(pairs))
for _, p := range pairs {
newEntry.Data[p.Name] = p.Value
}
}
type formatter interface {
format(*logEntry) string
}
type textFormatter struct {
}
// ex. 2016-02-10T09:15:25.498-08:00 [INFO] This is a message from test in text format
func (*textFormatter) format(newEntry *logEntry) string {
b := &bytes.Buffer{}
appendValue(b, newEntry.Time)
if newEntry.Rlevel != NONE {
fmt.Fprintf(b, "[%s,%s] ", newEntry.Level.String(), newEntry.Rlevel.String())
} else {
fmt.Fprintf(b, "[%s] ", newEntry.Level.String())
}
appendValue(b, newEntry.Message)
for key, value := range newEntry.Data {
appendKeyValue(b, key, value)
}
b.WriteByte('\n')
s := bytes.NewBuffer(b.Bytes())
return s.String()
}
func appendValue(b *bytes.Buffer, value interface{}) {
if _, ok := value.(string); ok {
fmt.Fprintf(b, "%s ", value)
} else {
fmt.Fprintf(b, "%v ", value)
}
}
type keyvalueFormatter struct {
}
// ex. _time=2016-02-10T09:15:25.498-08:00 _level=INFO _msg=This is a message from test in key-value format
func (*keyvalueFormatter) format(newEntry *logEntry) string {
b := &bytes.Buffer{}
appendKeyValue(b, _TIME, newEntry.Time)
appendKeyValue(b, _LEVEL, newEntry.Level.String())
if newEntry.Rlevel != NONE {
appendKeyValue(b, _RLEVEL, newEntry.Rlevel.String())
}
appendKeyValue(b, _MSG, newEntry.Message)
for key, value := range newEntry.Data {
appendKeyValue(b, key, value)
}
b.WriteByte('\n')
s := bytes.NewBuffer(b.Bytes())
return s.String()
}
func appendKeyValue(b *bytes.Buffer, key, value interface{}) {
if _, ok := value.(string); ok {
fmt.Fprintf(b, "%v=%s ", key, value)
} else {
fmt.Fprintf(b, "%v=%v ", key, value)
}
}
type jsonFormatter struct {
}
// ex. {"_level":"INFO","_msg":"This is a message from test in json format","_time":"2016-02-10T09:12:59.518-08:00"}
func (*jsonFormatter) format(newEntry *logEntry) string {
if newEntry.Data == nil {
newEntry.Data = make(Map, 5)
}
newEntry.Data[_TIME] = newEntry.Time
newEntry.Data[_LEVEL] = newEntry.Level.String()
if newEntry.Rlevel != NONE {
newEntry.Data[_RLEVEL] = newEntry.Rlevel.String()
}
newEntry.Data[_MSG] = newEntry.Message
serialized, _ := json.Marshal(newEntry.Data)
s := bytes.NewBuffer(append(serialized, '\n'))
return s.String()
}

207
vendor/github.com/couchbase/goutils/scramsha/scramsha.go generated vendored Normal file
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// @author Couchbase <info@couchbase.com>
// @copyright 2018 Couchbase, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package scramsha provides implementation of client side SCRAM-SHA
// according to https://tools.ietf.org/html/rfc5802
package scramsha
import (
"crypto/hmac"
"crypto/rand"
"crypto/sha1"
"crypto/sha256"
"crypto/sha512"
"encoding/base64"
"fmt"
"github.com/pkg/errors"
"golang.org/x/crypto/pbkdf2"
"hash"
"strconv"
"strings"
)
func hmacHash(message []byte, secret []byte, hashFunc func() hash.Hash) []byte {
h := hmac.New(hashFunc, secret)
h.Write(message)
return h.Sum(nil)
}
func shaHash(message []byte, hashFunc func() hash.Hash) []byte {
h := hashFunc()
h.Write(message)
return h.Sum(nil)
}
func generateClientNonce(size int) (string, error) {
randomBytes := make([]byte, size)
_, err := rand.Read(randomBytes)
if err != nil {
return "", errors.Wrap(err, "Unable to generate nonce")
}
return base64.StdEncoding.EncodeToString(randomBytes), nil
}
// ScramSha provides context for SCRAM-SHA handling
type ScramSha struct {
hashSize int
hashFunc func() hash.Hash
clientNonce string
serverNonce string
salt []byte
i int
saltedPassword []byte
authMessage string
}
var knownMethods = []string{"SCRAM-SHA512", "SCRAM-SHA256", "SCRAM-SHA1"}
// BestMethod returns SCRAM-SHA method we consider the best out of suggested
// by server
func BestMethod(methods string) (string, error) {
for _, m := range knownMethods {
if strings.Index(methods, m) != -1 {
return m, nil
}
}
return "", errors.Errorf(
"None of the server suggested methods [%s] are supported",
methods)
}
// NewScramSha creates context for SCRAM-SHA handling
func NewScramSha(method string) (*ScramSha, error) {
s := &ScramSha{}
if method == knownMethods[0] {
s.hashFunc = sha512.New
s.hashSize = 64
} else if method == knownMethods[1] {
s.hashFunc = sha256.New
s.hashSize = 32
} else if method == knownMethods[2] {
s.hashFunc = sha1.New
s.hashSize = 20
} else {
return nil, errors.Errorf("Unsupported method %s", method)
}
return s, nil
}
// GetStartRequest builds start SCRAM-SHA request to be sent to server
func (s *ScramSha) GetStartRequest(user string) (string, error) {
var err error
s.clientNonce, err = generateClientNonce(24)
if err != nil {
return "", errors.Wrapf(err, "Unable to generate SCRAM-SHA "+
"start request for user %s", user)
}
message := fmt.Sprintf("n,,n=%s,r=%s", user, s.clientNonce)
s.authMessage = message[3:]
return message, nil
}
// HandleStartResponse handles server response on start SCRAM-SHA request
func (s *ScramSha) HandleStartResponse(response string) error {
parts := strings.Split(response, ",")
if len(parts) != 3 {
return errors.Errorf("expected 3 fields in first SCRAM-SHA-1 "+
"server message %s", response)
}
if !strings.HasPrefix(parts[0], "r=") || len(parts[0]) < 3 {
return errors.Errorf("Server sent an invalid nonce %s",
parts[0])
}
if !strings.HasPrefix(parts[1], "s=") || len(parts[1]) < 3 {
return errors.Errorf("Server sent an invalid salt %s", parts[1])
}
if !strings.HasPrefix(parts[2], "i=") || len(parts[2]) < 3 {
return errors.Errorf("Server sent an invalid iteration count %s",
parts[2])
}
s.serverNonce = parts[0][2:]
encodedSalt := parts[1][2:]
var err error
s.i, err = strconv.Atoi(parts[2][2:])
if err != nil {
return errors.Errorf("Iteration count %s must be integer.",
parts[2][2:])
}
if s.i < 1 {
return errors.New("Iteration count should be positive")
}
if !strings.HasPrefix(s.serverNonce, s.clientNonce) {
return errors.Errorf("Server nonce %s doesn't contain client"+
" nonce %s", s.serverNonce, s.clientNonce)
}
s.salt, err = base64.StdEncoding.DecodeString(encodedSalt)
if err != nil {
return errors.Wrapf(err, "Unable to decode salt %s",
encodedSalt)
}
s.authMessage = s.authMessage + "," + response
return nil
}
// GetFinalRequest builds final SCRAM-SHA request to be sent to server
func (s *ScramSha) GetFinalRequest(pass string) string {
clientFinalMessageBare := "c=biws,r=" + s.serverNonce
s.authMessage = s.authMessage + "," + clientFinalMessageBare
s.saltedPassword = pbkdf2.Key([]byte(pass), s.salt, s.i,
s.hashSize, s.hashFunc)
clientKey := hmacHash([]byte("Client Key"), s.saltedPassword, s.hashFunc)
storedKey := shaHash(clientKey, s.hashFunc)
clientSignature := hmacHash([]byte(s.authMessage), storedKey, s.hashFunc)
clientProof := make([]byte, len(clientSignature))
for i := 0; i < len(clientSignature); i++ {
clientProof[i] = clientKey[i] ^ clientSignature[i]
}
return clientFinalMessageBare + ",p=" +
base64.StdEncoding.EncodeToString(clientProof)
}
// HandleFinalResponse handles server's response on final SCRAM-SHA request
func (s *ScramSha) HandleFinalResponse(response string) error {
if strings.Contains(response, ",") ||
!strings.HasPrefix(response, "v=") {
return errors.Errorf("Server sent an invalid final message %s",
response)
}
decodedMessage, err := base64.StdEncoding.DecodeString(response[2:])
if err != nil {
return errors.Wrapf(err, "Unable to decode server message %s",
response[2:])
}
serverKey := hmacHash([]byte("Server Key"), s.saltedPassword,
s.hashFunc)
serverSignature := hmacHash([]byte(s.authMessage), serverKey,
s.hashFunc)
if string(decodedMessage) != string(serverSignature) {
return errors.Errorf("Server proof %s doesn't match "+
"the expected: %s",
string(decodedMessage), string(serverSignature))
}
return nil
}

252
vendor/github.com/couchbase/goutils/scramsha/scramsha_http.go generated vendored Normal file
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// @author Couchbase <info@couchbase.com>
// @copyright 2018 Couchbase, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package scramsha provides implementation of client side SCRAM-SHA
// via Http according to https://tools.ietf.org/html/rfc7804
package scramsha
import (
"encoding/base64"
"github.com/pkg/errors"
"io"
"io/ioutil"
"net/http"
"strings"
)
// consts used to parse scramsha response from target
const (
WWWAuthenticate = "WWW-Authenticate"
AuthenticationInfo = "Authentication-Info"
Authorization = "Authorization"
DataPrefix = "data="
SidPrefix = "sid="
)
// Request provides implementation of http request that can be retried
type Request struct {
body io.ReadSeeker
// Embed an HTTP request directly. This makes a *Request act exactly
// like an *http.Request so that all meta methods are supported.
*http.Request
}
type lenReader interface {
Len() int
}
// NewRequest creates http request that can be retried
func NewRequest(method, url string, body io.ReadSeeker) (*Request, error) {
// Wrap the body in a noop ReadCloser if non-nil. This prevents the
// reader from being closed by the HTTP client.
var rcBody io.ReadCloser
if body != nil {
rcBody = ioutil.NopCloser(body)
}
// Make the request with the noop-closer for the body.
httpReq, err := http.NewRequest(method, url, rcBody)
if err != nil {
return nil, err
}
// Check if we can set the Content-Length automatically.
if lr, ok := body.(lenReader); ok {
httpReq.ContentLength = int64(lr.Len())
}
return &Request{body, httpReq}, nil
}
func encode(str string) string {
return base64.StdEncoding.EncodeToString([]byte(str))
}
func decode(str string) (string, error) {
bytes, err := base64.StdEncoding.DecodeString(str)
if err != nil {
return "", errors.Errorf("Cannot base64 decode %s",
str)
}
return string(bytes), err
}
func trimPrefix(s, prefix string) (string, error) {
l := len(s)
trimmed := strings.TrimPrefix(s, prefix)
if l == len(trimmed) {
return trimmed, errors.Errorf("Prefix %s not found in %s",
prefix, s)
}
return trimmed, nil
}
func drainBody(resp *http.Response) {
defer resp.Body.Close()
io.Copy(ioutil.Discard, resp.Body)
}
// DoScramSha performs SCRAM-SHA handshake via Http
func DoScramSha(req *Request,
username string,
password string,
client *http.Client) (*http.Response, error) {
method := "SCRAM-SHA-512"
s, err := NewScramSha("SCRAM-SHA512")
if err != nil {
return nil, errors.Wrap(err,
"Unable to initialize SCRAM-SHA handler")
}
message, err := s.GetStartRequest(username)
if err != nil {
return nil, err
}
encodedMessage := method + " " + DataPrefix + encode(message)
req.Header.Set(Authorization, encodedMessage)
res, err := client.Do(req.Request)
if err != nil {
return nil, errors.Wrap(err, "Problem sending SCRAM-SHA start"+
"request")
}
if res.StatusCode != http.StatusUnauthorized {
return res, nil
}
authHeader := res.Header.Get(WWWAuthenticate)
if authHeader == "" {
drainBody(res)
return nil, errors.Errorf("Header %s is not populated in "+
"SCRAM-SHA start response", WWWAuthenticate)
}
authHeader, err = trimPrefix(authHeader, method+" ")
if err != nil {
if strings.HasPrefix(authHeader, "Basic ") {
// user not found
return res, nil
}
drainBody(res)
return nil, errors.Wrapf(err, "Error while parsing SCRAM-SHA "+
"start response %s", authHeader)
}
drainBody(res)
sid, response, err := parseSidAndData(authHeader)
if err != nil {
return nil, errors.Wrapf(err, "Error while parsing SCRAM-SHA "+
"start response %s", authHeader)
}
err = s.HandleStartResponse(response)
if err != nil {
return nil, errors.Wrapf(err, "Error parsing SCRAM-SHA start "+
"response %s", response)
}
message = s.GetFinalRequest(password)
encodedMessage = method + " " + SidPrefix + sid + "," + DataPrefix +
encode(message)
req.Header.Set(Authorization, encodedMessage)
// rewind request body so it can be resent again
if req.body != nil {
if _, err = req.body.Seek(0, 0); err != nil {
return nil, errors.Errorf("Failed to seek body: %v",
err)
}
}
res, err = client.Do(req.Request)
if err != nil {
return nil, errors.Wrap(err, "Problem sending SCRAM-SHA final"+
"request")
}
if res.StatusCode == http.StatusUnauthorized {
// TODO retrieve and return error
return res, nil
}
if res.StatusCode >= http.StatusInternalServerError {
// in this case we cannot expect server to set headers properly
return res, nil
}
authHeader = res.Header.Get(AuthenticationInfo)
if authHeader == "" {
drainBody(res)
return nil, errors.Errorf("Header %s is not populated in "+
"SCRAM-SHA final response", AuthenticationInfo)
}
finalSid, response, err := parseSidAndData(authHeader)
if err != nil {
drainBody(res)
return nil, errors.Wrapf(err, "Error while parsing SCRAM-SHA "+
"final response %s", authHeader)
}
if finalSid != sid {
drainBody(res)
return nil, errors.Errorf("Sid %s returned by server "+
"doesn't match the original sid %s", finalSid, sid)
}
err = s.HandleFinalResponse(response)
if err != nil {
drainBody(res)
return nil, errors.Wrapf(err,
"Error handling SCRAM-SHA final server response %s",
response)
}
return res, nil
}
func parseSidAndData(authHeader string) (string, string, error) {
sidIndex := strings.Index(authHeader, SidPrefix)
if sidIndex < 0 {
return "", "", errors.Errorf("Cannot find %s in %s",
SidPrefix, authHeader)
}
sidEndIndex := strings.Index(authHeader, ",")
if sidEndIndex < 0 {
return "", "", errors.Errorf("Cannot find ',' in %s",
authHeader)
}
sid := authHeader[sidIndex+len(SidPrefix) : sidEndIndex]
dataIndex := strings.Index(authHeader, DataPrefix)
if dataIndex < 0 {
return "", "", errors.Errorf("Cannot find %s in %s",
DataPrefix, authHeader)
}
data, err := decode(authHeader[dataIndex+len(DataPrefix):])
if err != nil {
return "", "", err
}
return sid, data, nil
}

19
vendor/github.com/couchbaselabs/go-couchbase/LICENSE generated vendored Normal file
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Copyright (c) 2013 Couchbase, Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

32
vendor/github.com/couchbaselabs/go-couchbase/audit.go generated vendored Normal file
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package couchbase
import ()
// Sample data:
// {"disabled":["12333", "22244"],"uid":"132492431","auditdEnabled":true,
// "disabledUsers":[{"name":"bill","domain":"local"},{"name":"bob","domain":"local"}],
// "logPath":"/Users/johanlarson/Library/Application Support/Couchbase/var/lib/couchbase/logs",
// "rotateInterval":86400,"rotateSize":20971520}
type AuditSpec struct {
Disabled []uint32 `json:"disabled"`
Uid string `json:"uid"`
AuditdEnabled bool `json:"auditdEnabled`
DisabledUsers []AuditUser `json:"disabledUsers"`
LogPath string `json:"logPath"`
RotateInterval int64 `json:"rotateInterval"`
RotateSize int64 `json:"rotateSize"`
}
type AuditUser struct {
Name string `json:"name"`
Domain string `json:"domain"`
}
func (c *Client) GetAuditSpec() (*AuditSpec, error) {
ret := &AuditSpec{}
err := c.parseURLResponse("/settings/audit", ret)
if err != nil {
return nil, err
}
return ret, nil
}

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vendor/github.com/couchbaselabs/go-couchbase/client.go generated vendored Normal file
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387
vendor/github.com/couchbaselabs/go-couchbase/conn_pool.go generated vendored Normal file
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package couchbase
import (
"errors"
"sync/atomic"
"time"
"github.com/couchbase/gomemcached"
"github.com/couchbase/gomemcached/client"
"github.com/couchbase/goutils/logging"
)
// GenericMcdAuthHandler is a kind of AuthHandler that performs
// special auth exchange (like non-standard auth, possibly followed by
// select-bucket).
type GenericMcdAuthHandler interface {
AuthHandler
AuthenticateMemcachedConn(host string, conn *memcached.Client) error
}
// Error raised when a connection can't be retrieved from a pool.
var TimeoutError = errors.New("timeout waiting to build connection")
var errClosedPool = errors.New("the connection pool is closed")
var errNoPool = errors.New("no connection pool")
// Default timeout for retrieving a connection from the pool.
var ConnPoolTimeout = time.Hour * 24 * 30
// overflow connection closer cycle time
var ConnCloserInterval = time.Second * 30
// ConnPoolAvailWaitTime is the amount of time to wait for an existing
// connection from the pool before considering the creation of a new
// one.
var ConnPoolAvailWaitTime = time.Millisecond
type connectionPool struct {
host string
mkConn func(host string, ah AuthHandler) (*memcached.Client, error)
auth AuthHandler
connections chan *memcached.Client
createsem chan bool
bailOut chan bool
poolSize int
connCount uint64
inUse bool
}
func newConnectionPool(host string, ah AuthHandler, closer bool, poolSize, poolOverflow int) *connectionPool {
connSize := poolSize
if closer {
connSize += poolOverflow
}
rv := &connectionPool{
host: host,
connections: make(chan *memcached.Client, connSize),
createsem: make(chan bool, poolSize+poolOverflow),
mkConn: defaultMkConn,
auth: ah,
poolSize: poolSize,
}
if closer {
rv.bailOut = make(chan bool, 1)
go rv.connCloser()
}
return rv
}
// ConnPoolTimeout is notified whenever connections are acquired from a pool.
var ConnPoolCallback func(host string, source string, start time.Time, err error)
func defaultMkConn(host string, ah AuthHandler) (*memcached.Client, error) {
var features memcached.Features
conn, err := memcached.Connect("tcp", host)
if err != nil {
return nil, err
}
if TCPKeepalive == true {
conn.SetKeepAliveOptions(time.Duration(TCPKeepaliveInterval) * time.Second)
}
if EnableMutationToken == true {
features = append(features, memcached.FeatureMutationToken)
}
if EnableDataType == true {
features = append(features, memcached.FeatureDataType)
}
if EnableXattr == true {
features = append(features, memcached.FeatureXattr)
}
if len(features) > 0 {
if DefaultTimeout > 0 {
conn.SetDeadline(getDeadline(noDeadline, DefaultTimeout))
}
res, err := conn.EnableFeatures(features)
if DefaultTimeout > 0 {
conn.SetDeadline(noDeadline)
}
if err != nil && isTimeoutError(err) {
conn.Close()
return nil, err
}
if err != nil || res.Status != gomemcached.SUCCESS {
logging.Warnf("Unable to enable features %v", err)
}
}
if gah, ok := ah.(GenericMcdAuthHandler); ok {
err = gah.AuthenticateMemcachedConn(host, conn)
if err != nil {
conn.Close()
return nil, err
}
return conn, nil
}
name, pass, bucket := ah.GetCredentials()
if name != "default" {
_, err = conn.Auth(name, pass)
if err != nil {
conn.Close()
return nil, err
}
// Select bucket (Required for cb_auth creds)
// Required when doing auth with _admin credentials
if bucket != "" && bucket != name {
_, err = conn.SelectBucket(bucket)
if err != nil {
conn.Close()
return nil, err
}
}
}
return conn, nil
}
func (cp *connectionPool) Close() (err error) {
defer func() {
if recover() != nil {
err = errors.New("connectionPool.Close error")
}
}()
if cp.bailOut != nil {
// defensively, we won't wait if the channel is full
select {
case cp.bailOut <- false:
default:
}
}
close(cp.connections)
for c := range cp.connections {
c.Close()
}
return
}
func (cp *connectionPool) Node() string {
return cp.host
}
func (cp *connectionPool) GetWithTimeout(d time.Duration) (rv *memcached.Client, err error) {
if cp == nil {
return nil, errNoPool
}
path := ""
if ConnPoolCallback != nil {
defer func(path *string, start time.Time) {
ConnPoolCallback(cp.host, *path, start, err)
}(&path, time.Now())
}
path = "short-circuit"
// short-circuit available connetions.
select {
case rv, isopen := <-cp.connections:
if !isopen {
return nil, errClosedPool
}
atomic.AddUint64(&cp.connCount, 1)
return rv, nil
default:
}
t := time.NewTimer(ConnPoolAvailWaitTime)
defer t.Stop()
// Try to grab an available connection within 1ms
select {
case rv, isopen := <-cp.connections:
path = "avail1"
if !isopen {
return nil, errClosedPool
}
atomic.AddUint64(&cp.connCount, 1)
return rv, nil
case <-t.C:
// No connection came around in time, let's see
// whether we can get one or build a new one first.
t.Reset(d) // Reuse the timer for the full timeout.
select {
case rv, isopen := <-cp.connections:
path = "avail2"
if !isopen {
return nil, errClosedPool
}
atomic.AddUint64(&cp.connCount, 1)
return rv, nil
case cp.createsem <- true:
path = "create"
// Build a connection if we can't get a real one.
// This can potentially be an overflow connection, or
// a pooled connection.
rv, err := cp.mkConn(cp.host, cp.auth)
if err != nil {
// On error, release our create hold
<-cp.createsem
} else {
atomic.AddUint64(&cp.connCount, 1)
}
return rv, err
case <-t.C:
return nil, ErrTimeout
}
}
}
func (cp *connectionPool) Get() (*memcached.Client, error) {
return cp.GetWithTimeout(ConnPoolTimeout)
}
func (cp *connectionPool) Return(c *memcached.Client) {
if c == nil {
return
}
if cp == nil {
c.Close()
}
if c.IsHealthy() {
defer func() {
if recover() != nil {
// This happens when the pool has already been
// closed and we're trying to return a
// connection to it anyway. Just close the
// connection.
c.Close()
}
}()
select {
case cp.connections <- c:
default:
<-cp.createsem
c.Close()
}
} else {
<-cp.createsem
c.Close()
}
}
// give the ability to discard a connection from a pool
// useful for ditching connections to the wrong node after a rebalance
func (cp *connectionPool) Discard(c *memcached.Client) {
<-cp.createsem
c.Close()
}
// asynchronous connection closer
func (cp *connectionPool) connCloser() {
var connCount uint64
t := time.NewTimer(ConnCloserInterval)
defer t.Stop()
for {
connCount = cp.connCount
// we don't exist anymore! bail out!
select {
case <-cp.bailOut:
return
case <-t.C:
}
t.Reset(ConnCloserInterval)
// no overflow connections open or sustained requests for connections
// nothing to do until the next cycle
if len(cp.connections) <= cp.poolSize ||
ConnCloserInterval/ConnPoolAvailWaitTime < time.Duration(cp.connCount-connCount) {
continue
}
// close overflow connections now that they are not needed
for c := range cp.connections {
select {
case <-cp.bailOut:
return
default:
}
// bail out if close did not work out
if !cp.connCleanup(c) {
return
}
if len(cp.connections) <= cp.poolSize {
break
}
}
}
}
// close connection with recovery on error
func (cp *connectionPool) connCleanup(c *memcached.Client) (rv bool) {
// just in case we are closing a connection after
// bailOut has been sent but we haven't yet read it
defer func() {
if recover() != nil {
rv = false
}
}()
rv = true
c.Close()
<-cp.createsem
return
}
func (cp *connectionPool) StartTapFeed(args *memcached.TapArguments) (*memcached.TapFeed, error) {
if cp == nil {
return nil, errNoPool
}
mc, err := cp.Get()
if err != nil {
return nil, err
}
// A connection can't be used after TAP; Dont' count it against the
// connection pool capacity
<-cp.createsem
return mc.StartTapFeed(*args)
}
const DEFAULT_WINDOW_SIZE = 20 * 1024 * 1024 // 20 Mb
func (cp *connectionPool) StartUprFeed(name string, sequence uint32, dcp_buffer_size uint32, data_chan_size int) (*memcached.UprFeed, error) {
if cp == nil {
return nil, errNoPool
}
mc, err := cp.Get()
if err != nil {
return nil, err
}
// A connection can't be used after it has been allocated to UPR;
// Dont' count it against the connection pool capacity
<-cp.createsem
uf, err := mc.NewUprFeed()
if err != nil {
return nil, err
}
if err := uf.UprOpen(name, sequence, dcp_buffer_size); err != nil {
return nil, err
}
if err := uf.StartFeedWithConfig(data_chan_size); err != nil {
return nil, err
}
return uf, nil
}

288
vendor/github.com/couchbaselabs/go-couchbase/ddocs.go generated vendored Normal file
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package couchbase
import (
"bytes"
"encoding/json"
"fmt"
"github.com/couchbase/goutils/logging"
"io/ioutil"
"net/http"
)
// ViewDefinition represents a single view within a design document.
type ViewDefinition struct {
Map string `json:"map"`
Reduce string `json:"reduce,omitempty"`
}
// DDoc is the document body of a design document specifying a view.
type DDoc struct {
Language string `json:"language,omitempty"`
Views map[string]ViewDefinition `json:"views"`
}
// DDocsResult represents the result from listing the design
// documents.
type DDocsResult struct {
Rows []struct {
DDoc struct {
Meta map[string]interface{}
JSON DDoc
} `json:"doc"`
} `json:"rows"`
}
// GetDDocs lists all design documents
func (b *Bucket) GetDDocs() (DDocsResult, error) {
var ddocsResult DDocsResult
b.RLock()
pool := b.pool
uri := b.DDocs.URI
b.RUnlock()
// MB-23555 ephemeral buckets have no ddocs
if uri == "" {
return DDocsResult{}, nil
}
err := pool.client.parseURLResponse(uri, &ddocsResult)
if err != nil {
return DDocsResult{}, err
}
return ddocsResult, nil
}
func (b *Bucket) GetDDocWithRetry(docname string, into interface{}) error {
ddocURI := fmt.Sprintf("/%s/_design/%s", b.GetName(), docname)
err := b.parseAPIResponse(ddocURI, &into)
if err != nil {
return err
}
return nil
}
func (b *Bucket) GetDDocsWithRetry() (DDocsResult, error) {
var ddocsResult DDocsResult
b.RLock()
uri := b.DDocs.URI
b.RUnlock()
// MB-23555 ephemeral buckets have no ddocs
if uri == "" {
return DDocsResult{}, nil
}
err := b.parseURLResponse(uri, &ddocsResult)
if err != nil {
return DDocsResult{}, err
}
return ddocsResult, nil
}
func (b *Bucket) ddocURL(docname string) (string, error) {
u, err := b.randomBaseURL()
if err != nil {
return "", err
}
u.Path = fmt.Sprintf("/%s/_design/%s", b.GetName(), docname)
return u.String(), nil
}
func (b *Bucket) ddocURLNext(nodeId int, docname string) (string, int, error) {
u, selected, err := b.randomNextURL(nodeId)
if err != nil {
return "", -1, err
}
u.Path = fmt.Sprintf("/%s/_design/%s", b.GetName(), docname)
return u.String(), selected, nil
}
const ABS_MAX_RETRIES = 10
const ABS_MIN_RETRIES = 3
func (b *Bucket) getMaxRetries() (int, error) {
maxRetries := len(b.Nodes())
if maxRetries == 0 {
return 0, fmt.Errorf("No available Couch rest URLs")
}
if maxRetries > ABS_MAX_RETRIES {
maxRetries = ABS_MAX_RETRIES
} else if maxRetries < ABS_MIN_RETRIES {
maxRetries = ABS_MIN_RETRIES
}
return maxRetries, nil
}
// PutDDoc installs a design document.
func (b *Bucket) PutDDoc(docname string, value interface{}) error {
var Err error
maxRetries, err := b.getMaxRetries()
if err != nil {
return err
}
lastNode := START_NODE_ID
for retryCount := 0; retryCount < maxRetries; retryCount++ {
Err = nil
ddocU, selectedNode, err := b.ddocURLNext(lastNode, docname)
if err != nil {
return err
}
lastNode = selectedNode
logging.Infof(" Trying with selected node %d", selectedNode)
j, err := json.Marshal(value)
if err != nil {
return err
}
req, err := http.NewRequest("PUT", ddocU, bytes.NewReader(j))
if err != nil {
return err
}
req.Header.Set("Content-Type", "application/json")
err = maybeAddAuth(req, b.authHandler(false /* bucket not yet locked */))
if err != nil {
return err
}
res, err := doHTTPRequest(req)
if err != nil {
return err
}
if res.StatusCode != 201 {
body, _ := ioutil.ReadAll(res.Body)
Err = fmt.Errorf("error installing view: %v / %s",
res.Status, body)
logging.Errorf(" Error in PutDDOC %v. Retrying...", Err)
res.Body.Close()
b.Refresh()
continue
}
res.Body.Close()
break
}
return Err
}
// GetDDoc retrieves a specific a design doc.
func (b *Bucket) GetDDoc(docname string, into interface{}) error {
var Err error
var res *http.Response
maxRetries, err := b.getMaxRetries()
if err != nil {
return err
}
lastNode := START_NODE_ID
for retryCount := 0; retryCount < maxRetries; retryCount++ {
Err = nil
ddocU, selectedNode, err := b.ddocURLNext(lastNode, docname)
if err != nil {
return err
}
lastNode = selectedNode
logging.Infof(" Trying with selected node %d", selectedNode)
req, err := http.NewRequest("GET", ddocU, nil)
if err != nil {
return err
}
req.Header.Set("Content-Type", "application/json")
err = maybeAddAuth(req, b.authHandler(false /* bucket not yet locked */))
if err != nil {
return err
}
res, err = doHTTPRequest(req)
if err != nil {
return err
}
if res.StatusCode != 200 {
body, _ := ioutil.ReadAll(res.Body)
Err = fmt.Errorf("error reading view: %v / %s",
res.Status, body)
logging.Errorf(" Error in GetDDOC %v Retrying...", Err)
b.Refresh()
res.Body.Close()
continue
}
defer res.Body.Close()
break
}
if Err != nil {
return Err
}
d := json.NewDecoder(res.Body)
return d.Decode(into)
}
// DeleteDDoc removes a design document.
func (b *Bucket) DeleteDDoc(docname string) error {
var Err error
maxRetries, err := b.getMaxRetries()
if err != nil {
return err
}
lastNode := START_NODE_ID
for retryCount := 0; retryCount < maxRetries; retryCount++ {
Err = nil
ddocU, selectedNode, err := b.ddocURLNext(lastNode, docname)
if err != nil {
return err
}
lastNode = selectedNode
logging.Infof(" Trying with selected node %d", selectedNode)
req, err := http.NewRequest("DELETE", ddocU, nil)
if err != nil {
return err
}
req.Header.Set("Content-Type", "application/json")
err = maybeAddAuth(req, b.authHandler(false /* bucket not already locked */))
if err != nil {
return err
}
res, err := doHTTPRequest(req)
if err != nil {
return err
}
if res.StatusCode != 200 {
body, _ := ioutil.ReadAll(res.Body)
Err = fmt.Errorf("error deleting view : %v / %s", res.Status, body)
logging.Errorf(" Error in DeleteDDOC %v. Retrying ... ", Err)
b.Refresh()
res.Body.Close()
continue
}
res.Body.Close()
break
}
return Err
}

300
vendor/github.com/couchbaselabs/go-couchbase/observe.go generated vendored Normal file
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package couchbase
import (
"fmt"
"github.com/couchbase/goutils/logging"
"sync"
)
type PersistTo uint8
const (
PersistNone = PersistTo(0x00)
PersistMaster = PersistTo(0x01)
PersistOne = PersistTo(0x02)
PersistTwo = PersistTo(0x03)
PersistThree = PersistTo(0x04)
PersistFour = PersistTo(0x05)
)
type ObserveTo uint8
const (
ObserveNone = ObserveTo(0x00)
ObserveReplicateOne = ObserveTo(0x01)
ObserveReplicateTwo = ObserveTo(0x02)
ObserveReplicateThree = ObserveTo(0x03)
ObserveReplicateFour = ObserveTo(0x04)
)
type JobType uint8
const (
OBSERVE = JobType(0x00)
PERSIST = JobType(0x01)
)
type ObservePersistJob struct {
vb uint16
vbuuid uint64
hostname string
jobType JobType
failover uint8
lastPersistedSeqNo uint64
currentSeqNo uint64
resultChan chan *ObservePersistJob
errorChan chan *OPErrResponse
}
type OPErrResponse struct {
vb uint16
vbuuid uint64
err error
job *ObservePersistJob
}
var ObservePersistPool = NewPool(1024)
var OPJobChan = make(chan *ObservePersistJob, 1024)
var OPJobDone = make(chan bool)
var wg sync.WaitGroup
func (b *Bucket) StartOPPollers(maxWorkers int) {
for i := 0; i < maxWorkers; i++ {
go b.OPJobPoll()
wg.Add(1)
}
wg.Wait()
}
func (b *Bucket) SetObserveAndPersist(nPersist PersistTo, nObserve ObserveTo) (err error) {
numNodes := len(b.Nodes())
if int(nPersist) > numNodes || int(nObserve) > numNodes {
return fmt.Errorf("Not enough healthy nodes in the cluster")
}
if int(nPersist) > (b.Replicas+1) || int(nObserve) > b.Replicas {
return fmt.Errorf("Not enough replicas in the cluster")
}
if EnableMutationToken == false {
return fmt.Errorf("Mutation Tokens not enabled ")
}
b.ds = &DurablitySettings{Persist: PersistTo(nPersist), Observe: ObserveTo(nObserve)}
return
}
func (b *Bucket) ObserveAndPersistPoll(vb uint16, vbuuid uint64, seqNo uint64) (err error, failover bool) {
b.RLock()
ds := b.ds
b.RUnlock()
if ds == nil {
return
}
nj := 0 // total number of jobs
resultChan := make(chan *ObservePersistJob, 10)
errChan := make(chan *OPErrResponse, 10)
nodes := b.GetNodeList(vb)
if int(ds.Observe) > len(nodes) || int(ds.Persist) > len(nodes) {
return fmt.Errorf("Not enough healthy nodes in the cluster"), false
}
logging.Infof("Node list %v", nodes)
if ds.Observe >= ObserveReplicateOne {
// create a job for each host
for i := ObserveReplicateOne; i < ds.Observe+1; i++ {
opJob := ObservePersistPool.Get()
opJob.vb = vb
opJob.vbuuid = vbuuid
opJob.jobType = OBSERVE
opJob.hostname = nodes[i]
opJob.resultChan = resultChan
opJob.errorChan = errChan
OPJobChan <- opJob
nj++
}
}
if ds.Persist >= PersistMaster {
for i := PersistMaster; i < ds.Persist+1; i++ {
opJob := ObservePersistPool.Get()
opJob.vb = vb
opJob.vbuuid = vbuuid
opJob.jobType = PERSIST
opJob.hostname = nodes[i]
opJob.resultChan = resultChan
opJob.errorChan = errChan
OPJobChan <- opJob
nj++
}
}
ok := true
for ok {
select {
case res := <-resultChan:
jobDone := false
if res.failover == 0 {
// no failover
if res.jobType == PERSIST {
if res.lastPersistedSeqNo >= seqNo {
jobDone = true
}
} else {
if res.currentSeqNo >= seqNo {
jobDone = true
}
}
if jobDone == true {
nj--
ObservePersistPool.Put(res)
} else {
// requeue this job
OPJobChan <- res
}
} else {
// Not currently handling failover scenarios TODO
nj--
ObservePersistPool.Put(res)
failover = true
}
if nj == 0 {
// done with all the jobs
ok = false
close(resultChan)
close(errChan)
}
case Err := <-errChan:
logging.Errorf("Error in Observe/Persist %v", Err.err)
err = fmt.Errorf("Error in Observe/Persist job %v", Err.err)
nj--
ObservePersistPool.Put(Err.job)
if nj == 0 {
close(resultChan)
close(errChan)
ok = false
}
}
}
return
}
func (b *Bucket) OPJobPoll() {
ok := true
for ok == true {
select {
case job := <-OPJobChan:
pool := b.getConnPoolByHost(job.hostname, false /* bucket not already locked */)
if pool == nil {
errRes := &OPErrResponse{vb: job.vb, vbuuid: job.vbuuid}
errRes.err = fmt.Errorf("Pool not found for host %v", job.hostname)
errRes.job = job
job.errorChan <- errRes
continue
}
conn, err := pool.Get()
if err != nil {
errRes := &OPErrResponse{vb: job.vb, vbuuid: job.vbuuid}
errRes.err = fmt.Errorf("Unable to get connection from pool %v", err)
errRes.job = job
job.errorChan <- errRes
continue
}
res, err := conn.ObserveSeq(job.vb, job.vbuuid)
if err != nil {
errRes := &OPErrResponse{vb: job.vb, vbuuid: job.vbuuid}
errRes.err = fmt.Errorf("Command failed %v", err)
errRes.job = job
job.errorChan <- errRes
continue
}
pool.Return(conn)
job.lastPersistedSeqNo = res.LastPersistedSeqNo
job.currentSeqNo = res.CurrentSeqNo
job.failover = res.Failover
job.resultChan <- job
case <-OPJobDone:
logging.Infof("Observe Persist Poller exitting")
ok = false
}
}
wg.Done()
}
func (b *Bucket) GetNodeList(vb uint16) []string {
vbm := b.VBServerMap()
if len(vbm.VBucketMap) < int(vb) {
logging.Infof("vbmap smaller than vblist")
return nil
}
nodes := make([]string, len(vbm.VBucketMap[vb]))
for i := 0; i < len(vbm.VBucketMap[vb]); i++ {
n := vbm.VBucketMap[vb][i]
if n < 0 {
continue
}
node := b.getMasterNode(n)
if len(node) > 1 {
nodes[i] = node
}
continue
}
return nodes
}
//pool of ObservePersist Jobs
type OPpool struct {
pool chan *ObservePersistJob
}
// NewPool creates a new pool of jobs
func NewPool(max int) *OPpool {
return &OPpool{
pool: make(chan *ObservePersistJob, max),
}
}
// Borrow a Client from the pool.
func (p *OPpool) Get() *ObservePersistJob {
var o *ObservePersistJob
select {
case o = <-p.pool:
default:
o = &ObservePersistJob{}
}
return o
}
// Return returns a Client to the pool.
func (p *OPpool) Put(o *ObservePersistJob) {
select {
case p.pool <- o:
default:
// let it go, let it go...
}
}

1282
vendor/github.com/couchbaselabs/go-couchbase/pools.go generated vendored Normal file
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209
vendor/github.com/couchbaselabs/go-couchbase/streaming.go generated vendored Normal file
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package couchbase
import (
"encoding/json"
"fmt"
"github.com/couchbase/goutils/logging"
"io"
"io/ioutil"
"math/rand"
"net"
"net/http"
"time"
"unsafe"
)
// Bucket auto-updater gets the latest version of the bucket config from
// the server. If the configuration has changed then updated the local
// bucket information. If the bucket has been deleted then notify anyone
// who is holding a reference to this bucket
const MAX_RETRY_COUNT = 5
const DISCONNECT_PERIOD = 120 * time.Second
type NotifyFn func(bucket string, err error)
// Use TCP keepalive to detect half close sockets
var updaterTransport http.RoundTripper = &http.Transport{
Proxy: http.ProxyFromEnvironment,
Dial: (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
}).Dial,
}
var updaterHTTPClient = &http.Client{Transport: updaterTransport}
func doHTTPRequestForUpdate(req *http.Request) (*http.Response, error) {
var err error
var res *http.Response
for i := 0; i < HTTP_MAX_RETRY; i++ {
res, err = updaterHTTPClient.Do(req)
if err != nil && isHttpConnError(err) {
continue
}
break
}
if err != nil {
return nil, err
}
return res, err
}
func (b *Bucket) RunBucketUpdater(notify NotifyFn) {
go func() {
err := b.UpdateBucket()
if err != nil {
if notify != nil {
notify(b.GetName(), err)
}
logging.Errorf(" Bucket Updater exited with err %v", err)
}
}()
}
func (b *Bucket) replaceConnPools2(with []*connectionPool, bucketLocked bool) {
if !bucketLocked {
b.Lock()
defer b.Unlock()
}
old := b.connPools
b.connPools = unsafe.Pointer(&with)
if old != nil {
for _, pool := range *(*[]*connectionPool)(old) {
if pool != nil && pool.inUse == false {
pool.Close()
}
}
}
return
}
func (b *Bucket) UpdateBucket() error {
var failures int
var returnErr error
for {
if failures == MAX_RETRY_COUNT {
logging.Errorf(" Maximum failures reached. Exiting loop...")
return fmt.Errorf("Max failures reached. Last Error %v", returnErr)
}
nodes := b.Nodes()
if len(nodes) < 1 {
return fmt.Errorf("No healthy nodes found")
}
startNode := rand.Intn(len(nodes))
node := nodes[(startNode)%len(nodes)]
streamUrl := fmt.Sprintf("http://%s/pools/default/bucketsStreaming/%s", node.Hostname, b.GetName())
logging.Infof(" Trying with %s", streamUrl)
req, err := http.NewRequest("GET", streamUrl, nil)
if err != nil {
return err
}
b.RLock()
pool := b.pool
bucketName := b.Name
b.RUnlock()
scopes, err := getScopesAndCollections(pool, bucketName)
if err != nil {
return err
}
// Lock here to avoid having pool closed under us.
b.RLock()
err = maybeAddAuth(req, b.pool.client.ah)
b.RUnlock()
if err != nil {
return err
}
res, err := doHTTPRequestForUpdate(req)
if err != nil {
return err
}
if res.StatusCode != 200 {
bod, _ := ioutil.ReadAll(io.LimitReader(res.Body, 512))
logging.Errorf("Failed to connect to host, unexpected status code: %v. Body %s", res.StatusCode, bod)
res.Body.Close()
returnErr = fmt.Errorf("Failed to connect to host. Status %v Body %s", res.StatusCode, bod)
failures++
continue
}
dec := json.NewDecoder(res.Body)
tmpb := &Bucket{}
for {
err := dec.Decode(&tmpb)
if err != nil {
returnErr = err
res.Body.Close()
break
}
// if we got here, reset failure count
failures = 0
b.Lock()
// mark all the old connection pools for deletion
pools := b.getConnPools(true /* already locked */)
for _, pool := range pools {
if pool != nil {
pool.inUse = false
}
}
newcps := make([]*connectionPool, len(tmpb.VBSMJson.ServerList))
for i := range newcps {
// get the old connection pool and check if it is still valid
pool := b.getConnPoolByHost(tmpb.VBSMJson.ServerList[i], true /* bucket already locked */)
if pool != nil && pool.inUse == false {
// if the hostname and index is unchanged then reuse this pool
newcps[i] = pool
pool.inUse = true
continue
}
// else create a new pool
if b.ah != nil {
newcps[i] = newConnectionPool(
tmpb.VBSMJson.ServerList[i],
b.ah, false, PoolSize, PoolOverflow)
} else {
newcps[i] = newConnectionPool(
tmpb.VBSMJson.ServerList[i],
b.authHandler(true /* bucket already locked */),
false, PoolSize, PoolOverflow)
}
}
b.replaceConnPools2(newcps, true /* bucket already locked */)
tmpb.ah = b.ah
b.vBucketServerMap = unsafe.Pointer(&tmpb.VBSMJson)
b.nodeList = unsafe.Pointer(&tmpb.NodesJSON)
b.Scopes = scopes
b.Unlock()
logging.Infof("Got new configuration for bucket %s", b.GetName())
}
// we are here because of an error
failures++
continue
}
return nil
}

143
vendor/github.com/couchbaselabs/go-couchbase/tap.go generated vendored Normal file
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package couchbase
import (
"github.com/couchbase/gomemcached/client"
"github.com/couchbase/goutils/logging"
"sync"
"time"
)
const initialRetryInterval = 1 * time.Second
const maximumRetryInterval = 30 * time.Second
// A TapFeed streams mutation events from a bucket.
//
// Events from the bucket can be read from the channel 'C'. Remember
// to call Close() on it when you're done, unless its channel has
// closed itself already.
type TapFeed struct {
C <-chan memcached.TapEvent
bucket *Bucket
args *memcached.TapArguments
nodeFeeds []*memcached.TapFeed // The TAP feeds of the individual nodes
output chan memcached.TapEvent // Same as C but writeably-typed
wg sync.WaitGroup
quit chan bool
}
// StartTapFeed creates and starts a new Tap feed
func (b *Bucket) StartTapFeed(args *memcached.TapArguments) (*TapFeed, error) {
if args == nil {
defaultArgs := memcached.DefaultTapArguments()
args = &defaultArgs
}
feed := &TapFeed{
bucket: b,
args: args,
output: make(chan memcached.TapEvent, 10),
quit: make(chan bool),
}
go feed.run()
feed.C = feed.output
return feed, nil
}
// Goroutine that runs the feed
func (feed *TapFeed) run() {
retryInterval := initialRetryInterval
bucketOK := true
for {
// Connect to the TAP feed of each server node:
if bucketOK {
killSwitch, err := feed.connectToNodes()
if err == nil {
// Run until one of the sub-feeds fails:
select {
case <-killSwitch:
case <-feed.quit:
return
}
feed.closeNodeFeeds()
retryInterval = initialRetryInterval
}
}
// On error, try to refresh the bucket in case the list of nodes changed:
logging.Infof("go-couchbase: TAP connection lost; reconnecting to bucket %q in %v",
feed.bucket.Name, retryInterval)
err := feed.bucket.Refresh()
bucketOK = err == nil
select {
case <-time.After(retryInterval):
case <-feed.quit:
return
}
if retryInterval *= 2; retryInterval > maximumRetryInterval {
retryInterval = maximumRetryInterval
}
}
}
func (feed *TapFeed) connectToNodes() (killSwitch chan bool, err error) {
killSwitch = make(chan bool)
for _, serverConn := range feed.bucket.getConnPools(false /* not already locked */) {
var singleFeed *memcached.TapFeed
singleFeed, err = serverConn.StartTapFeed(feed.args)
if err != nil {
logging.Errorf("go-couchbase: Error connecting to tap feed of %s: %v", serverConn.host, err)
feed.closeNodeFeeds()
return
}
feed.nodeFeeds = append(feed.nodeFeeds, singleFeed)
go feed.forwardTapEvents(singleFeed, killSwitch, serverConn.host)
feed.wg.Add(1)
}
return
}
// Goroutine that forwards Tap events from a single node's feed to the aggregate feed.
func (feed *TapFeed) forwardTapEvents(singleFeed *memcached.TapFeed, killSwitch chan bool, host string) {
defer feed.wg.Done()
for {
select {
case event, ok := <-singleFeed.C:
if !ok {
if singleFeed.Error != nil {
logging.Errorf("go-couchbase: Tap feed from %s failed: %v", host, singleFeed.Error)
}
killSwitch <- true
return
}
feed.output <- event
case <-feed.quit:
return
}
}
}
func (feed *TapFeed) closeNodeFeeds() {
for _, f := range feed.nodeFeeds {
f.Close()
}
feed.nodeFeeds = nil
}
// Close a Tap feed.
func (feed *TapFeed) Close() error {
select {
case <-feed.quit:
return nil
default:
}
feed.closeNodeFeeds()
close(feed.quit)
feed.wg.Wait()
close(feed.output)
return nil
}

398
vendor/github.com/couchbaselabs/go-couchbase/upr.go generated vendored Normal file
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@ -0,0 +1,398 @@
package couchbase
import (
"log"
"sync"
"time"
"fmt"
"github.com/couchbase/gomemcached"
"github.com/couchbase/gomemcached/client"
"github.com/couchbase/goutils/logging"
)
// A UprFeed streams mutation events from a bucket.
//
// Events from the bucket can be read from the channel 'C'. Remember
// to call Close() on it when you're done, unless its channel has
// closed itself already.
type UprFeed struct {
C <-chan *memcached.UprEvent
bucket *Bucket
nodeFeeds map[string]*FeedInfo // The UPR feeds of the individual nodes
output chan *memcached.UprEvent // Same as C but writeably-typed
outputClosed bool
quit chan bool
name string // name of this UPR feed
sequence uint32 // sequence number for this feed
connected bool
killSwitch chan bool
closing bool
wg sync.WaitGroup
dcp_buffer_size uint32
data_chan_size int
}
// UprFeed from a single connection
type FeedInfo struct {
uprFeed *memcached.UprFeed // UPR feed handle
host string // hostname
connected bool // connected
quit chan bool // quit channel
}
type FailoverLog map[uint16]memcached.FailoverLog
// GetFailoverLogs, get the failover logs for a set of vbucket ids
func (b *Bucket) GetFailoverLogs(vBuckets []uint16) (FailoverLog, error) {
// map vbids to their corresponding hosts
vbHostList := make(map[string][]uint16)
vbm := b.VBServerMap()
if len(vbm.VBucketMap) < len(vBuckets) {
return nil, fmt.Errorf("vbmap smaller than vbucket list: %v vs. %v",
vbm.VBucketMap, vBuckets)
}
for _, vb := range vBuckets {
masterID := vbm.VBucketMap[vb][0]
master := b.getMasterNode(masterID)
if master == "" {
return nil, fmt.Errorf("No master found for vb %d", vb)
}
vbList := vbHostList[master]
if vbList == nil {
vbList = make([]uint16, 0)
}
vbList = append(vbList, vb)
vbHostList[master] = vbList
}
failoverLogMap := make(FailoverLog)
for _, serverConn := range b.getConnPools(false /* not already locked */) {
vbList := vbHostList[serverConn.host]
if vbList == nil {
continue
}
mc, err := serverConn.Get()
if err != nil {
logging.Infof("No Free connections for vblist %v", vbList)
return nil, fmt.Errorf("No Free connections for host %s",
serverConn.host)
}
// close the connection so that it doesn't get reused for upr data
// connection
defer mc.Close()
failoverlogs, err := mc.UprGetFailoverLog(vbList)
if err != nil {
return nil, fmt.Errorf("Error getting failover log %s host %s",
err.Error(), serverConn.host)
}
for vb, log := range failoverlogs {
failoverLogMap[vb] = *log
}
}
return failoverLogMap, nil
}
func (b *Bucket) StartUprFeed(name string, sequence uint32) (*UprFeed, error) {
return b.StartUprFeedWithConfig(name, sequence, 10, DEFAULT_WINDOW_SIZE)
}
// StartUprFeed creates and starts a new Upr feed
// No data will be sent on the channel unless vbuckets streams are requested
func (b *Bucket) StartUprFeedWithConfig(name string, sequence uint32, data_chan_size int, dcp_buffer_size uint32) (*UprFeed, error) {
feed := &UprFeed{
bucket: b,
output: make(chan *memcached.UprEvent, data_chan_size),
quit: make(chan bool),
nodeFeeds: make(map[string]*FeedInfo, 0),
name: name,
sequence: sequence,
killSwitch: make(chan bool),
dcp_buffer_size: dcp_buffer_size,
data_chan_size: data_chan_size,
}
err := feed.connectToNodes()
if err != nil {
return nil, fmt.Errorf("Cannot connect to bucket %s", err.Error())
}
feed.connected = true
go feed.run()
feed.C = feed.output
return feed, nil
}
// UprRequestStream starts a stream for a vb on a feed
func (feed *UprFeed) UprRequestStream(vb uint16, opaque uint16, flags uint32,
vuuid, startSequence, endSequence, snapStart, snapEnd uint64) error {
defer func() {
if r := recover(); r != nil {
log.Panicf("Panic in UprRequestStream. Feed %v Bucket %v", feed, feed.bucket)
}
}()
vbm := feed.bucket.VBServerMap()
if len(vbm.VBucketMap) < int(vb) {
return fmt.Errorf("vbmap smaller than vbucket list: %v vs. %v",
vb, vbm.VBucketMap)
}
if int(vb) >= len(vbm.VBucketMap) {
return fmt.Errorf("Invalid vbucket id %d", vb)
}
masterID := vbm.VBucketMap[vb][0]
master := feed.bucket.getMasterNode(masterID)
if master == "" {
return fmt.Errorf("Master node not found for vbucket %d", vb)
}
singleFeed := feed.nodeFeeds[master]
if singleFeed == nil {
return fmt.Errorf("UprFeed for this host not found")
}
if err := singleFeed.uprFeed.UprRequestStream(vb, opaque, flags,
vuuid, startSequence, endSequence, snapStart, snapEnd); err != nil {
return err
}
return nil
}
// UprCloseStream ends a vbucket stream.
func (feed *UprFeed) UprCloseStream(vb, opaqueMSB uint16) error {
defer func() {
if r := recover(); r != nil {
log.Panicf("Panic in UprCloseStream. Feed %v Bucket %v ", feed, feed.bucket)
}
}()
vbm := feed.bucket.VBServerMap()
if len(vbm.VBucketMap) < int(vb) {
return fmt.Errorf("vbmap smaller than vbucket list: %v vs. %v",
vb, vbm.VBucketMap)
}
if int(vb) >= len(vbm.VBucketMap) {
return fmt.Errorf("Invalid vbucket id %d", vb)
}
masterID := vbm.VBucketMap[vb][0]
master := feed.bucket.getMasterNode(masterID)
if master == "" {
return fmt.Errorf("Master node not found for vbucket %d", vb)
}
singleFeed := feed.nodeFeeds[master]
if singleFeed == nil {
return fmt.Errorf("UprFeed for this host not found")
}
if err := singleFeed.uprFeed.CloseStream(vb, opaqueMSB); err != nil {
return err
}
return nil
}
// Goroutine that runs the feed
func (feed *UprFeed) run() {
retryInterval := initialRetryInterval
bucketOK := true
for {
// Connect to the UPR feed of each server node:
if bucketOK {
// Run until one of the sub-feeds fails:
select {
case <-feed.killSwitch:
case <-feed.quit:
return
}
//feed.closeNodeFeeds()
retryInterval = initialRetryInterval
}
if feed.closing == true {
// we have been asked to shut down
return
}
// On error, try to refresh the bucket in case the list of nodes changed:
logging.Infof("go-couchbase: UPR connection lost; reconnecting to bucket %q in %v",
feed.bucket.Name, retryInterval)
if err := feed.bucket.Refresh(); err != nil {
// if we fail to refresh the bucket, exit the feed
// MB-14917
logging.Infof("Unable to refresh bucket %s ", err.Error())
close(feed.output)
feed.outputClosed = true
feed.closeNodeFeeds()
return
}
// this will only connect to nodes that are not connected or changed
// user will have to reconnect the stream
err := feed.connectToNodes()
if err != nil {
logging.Infof("Unable to connect to nodes..exit ")
close(feed.output)
feed.outputClosed = true
feed.closeNodeFeeds()
return
}
bucketOK = err == nil
select {
case <-time.After(retryInterval):
case <-feed.quit:
return
}
if retryInterval *= 2; retryInterval > maximumRetryInterval {
retryInterval = maximumRetryInterval
}
}
}
func (feed *UprFeed) connectToNodes() (err error) {
nodeCount := 0
for _, serverConn := range feed.bucket.getConnPools(false /* not already locked */) {
// this maybe a reconnection, so check if the connection to the node
// already exists. Connect only if the node is not found in the list
// or connected == false
nodeFeed := feed.nodeFeeds[serverConn.host]
if nodeFeed != nil && nodeFeed.connected == true {
continue
}
var singleFeed *memcached.UprFeed
var name string
if feed.name == "" {
name = "DefaultUprClient"
} else {
name = feed.name
}
singleFeed, err = serverConn.StartUprFeed(name, feed.sequence, feed.dcp_buffer_size, feed.data_chan_size)
if err != nil {
logging.Errorf("go-couchbase: Error connecting to upr feed of %s: %v", serverConn.host, err)
feed.closeNodeFeeds()
return
}
// add the node to the connection map
feedInfo := &FeedInfo{
uprFeed: singleFeed,
connected: true,
host: serverConn.host,
quit: make(chan bool),
}
feed.nodeFeeds[serverConn.host] = feedInfo
go feed.forwardUprEvents(feedInfo, feed.killSwitch, serverConn.host)
feed.wg.Add(1)
nodeCount++
}
if nodeCount == 0 {
return fmt.Errorf("No connection to bucket")
}
return nil
}
// Goroutine that forwards Upr events from a single node's feed to the aggregate feed.
func (feed *UprFeed) forwardUprEvents(nodeFeed *FeedInfo, killSwitch chan bool, host string) {
singleFeed := nodeFeed.uprFeed
defer func() {
feed.wg.Done()
if r := recover(); r != nil {
//if feed is not closing, re-throw the panic
if feed.outputClosed != true && feed.closing != true {
panic(r)
} else {
logging.Errorf("Panic is recovered. Since feed is closed, exit gracefully")
}
}
}()
for {
select {
case <-nodeFeed.quit:
nodeFeed.connected = false
return
case event, ok := <-singleFeed.C:
if !ok {
if singleFeed.Error != nil {
logging.Errorf("go-couchbase: Upr feed from %s failed: %v", host, singleFeed.Error)
}
killSwitch <- true
return
}
if feed.outputClosed == true {
// someone closed the node feed
logging.Infof("Node need closed, returning from forwardUprEvent")
return
}
feed.output <- event
if event.Status == gomemcached.NOT_MY_VBUCKET {
logging.Infof(" Got a not my vbucket error !! ")
if err := feed.bucket.Refresh(); err != nil {
logging.Errorf("Unable to refresh bucket %s ", err.Error())
feed.closeNodeFeeds()
return
}
// this will only connect to nodes that are not connected or changed
// user will have to reconnect the stream
if err := feed.connectToNodes(); err != nil {
logging.Errorf("Unable to connect to nodes %s", err.Error())
return
}
}
}
}
}
func (feed *UprFeed) closeNodeFeeds() {
for _, f := range feed.nodeFeeds {
logging.Infof(" Sending close to forwardUprEvent ")
close(f.quit)
f.uprFeed.Close()
}
feed.nodeFeeds = nil
}
// Close a Upr feed.
func (feed *UprFeed) Close() error {
select {
case <-feed.quit:
return nil
default:
}
feed.closing = true
feed.closeNodeFeeds()
close(feed.quit)
feed.wg.Wait()
if feed.outputClosed == false {
feed.outputClosed = true
close(feed.output)
}
return nil
}

119
vendor/github.com/couchbaselabs/go-couchbase/users.go generated vendored Normal file
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package couchbase
import (
"bytes"
"fmt"
)
type User struct {
Name string
Id string
Domain string
Roles []Role
}
type Role struct {
Role string
BucketName string `json:"bucket_name"`
}
// Sample:
// {"role":"admin","name":"Admin","desc":"Can manage ALL cluster features including security.","ce":true}
// {"role":"query_select","bucket_name":"*","name":"Query Select","desc":"Can execute SELECT statement on bucket to retrieve data"}
type RoleDescription struct {
Role string
Name string
Desc string
Ce bool
BucketName string `json:"bucket_name"`
}
// Return user-role data, as parsed JSON.
// Sample:
// [{"id":"ivanivanov","name":"Ivan Ivanov","roles":[{"role":"cluster_admin"},{"bucket_name":"default","role":"bucket_admin"}]},
// {"id":"petrpetrov","name":"Petr Petrov","roles":[{"role":"replication_admin"}]}]
func (c *Client) GetUserRoles() ([]interface{}, error) {
ret := make([]interface{}, 0, 1)
err := c.parseURLResponse("/settings/rbac/users", &ret)
if err != nil {
return nil, err
}
// Get the configured administrator.
// Expected result: {"port":8091,"username":"Administrator"}
adminInfo := make(map[string]interface{}, 2)
err = c.parseURLResponse("/settings/web", &adminInfo)
if err != nil {
return nil, err
}
// Create a special entry for the configured administrator.
adminResult := map[string]interface{}{
"name": adminInfo["username"],
"id": adminInfo["username"],
"domain": "ns_server",
"roles": []interface{}{
map[string]interface{}{
"role": "admin",
},
},
}
// Add the configured administrator to the list of results.
ret = append(ret, adminResult)
return ret, nil
}
func (c *Client) GetUserInfoAll() ([]User, error) {
ret := make([]User, 0, 16)
err := c.parseURLResponse("/settings/rbac/users", &ret)
if err != nil {
return nil, err
}
return ret, nil
}
func rolesToParamFormat(roles []Role) string {
var buffer bytes.Buffer
for i, role := range roles {
if i > 0 {
buffer.WriteString(",")
}
buffer.WriteString(role.Role)
if role.BucketName != "" {
buffer.WriteString("[")
buffer.WriteString(role.BucketName)
buffer.WriteString("]")
}
}
return buffer.String()
}
func (c *Client) PutUserInfo(u *User) error {
params := map[string]interface{}{
"name": u.Name,
"roles": rolesToParamFormat(u.Roles),
}
var target string
switch u.Domain {
case "external":
target = "/settings/rbac/users/" + u.Id
case "local":
target = "/settings/rbac/users/local/" + u.Id
default:
return fmt.Errorf("Unknown user type: %s", u.Domain)
}
var ret string // PUT returns an empty string. We ignore it.
err := c.parsePutURLResponse(target, params, &ret)
return err
}
func (c *Client) GetRolesAll() ([]RoleDescription, error) {
ret := make([]RoleDescription, 0, 32)
err := c.parseURLResponse("/settings/rbac/roles", &ret)
if err != nil {
return nil, err
}
return ret, nil
}

49
vendor/github.com/couchbaselabs/go-couchbase/util.go generated vendored Normal file
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@ -0,0 +1,49 @@
package couchbase
import (
"fmt"
"net/url"
"strings"
)
// CleanupHost returns the hostname with the given suffix removed.
func CleanupHost(h, commonSuffix string) string {
if strings.HasSuffix(h, commonSuffix) {
return h[:len(h)-len(commonSuffix)]
}
return h
}
// FindCommonSuffix returns the longest common suffix from the given
// strings.
func FindCommonSuffix(input []string) string {
rv := ""
if len(input) < 2 {
return ""
}
from := input
for i := len(input[0]); i > 0; i-- {
common := true
suffix := input[0][i:]
for _, s := range from {
if !strings.HasSuffix(s, suffix) {
common = false
break
}
}
if common {
rv = suffix
}
}
return rv
}
// ParseURL is a wrapper around url.Parse with some sanity-checking
func ParseURL(urlStr string) (result *url.URL, err error) {
result, err = url.Parse(urlStr)
if result != nil && result.Scheme == "" {
result = nil
err = fmt.Errorf("invalid URL <%s>", urlStr)
}
return
}

77
vendor/github.com/couchbaselabs/go-couchbase/vbmap.go generated vendored Normal file
View file

@ -0,0 +1,77 @@
package couchbase
var crc32tab = []uint32{
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d}
// VBHash finds the vbucket for the given key.
func (b *Bucket) VBHash(key string) uint32 {
crc := uint32(0xffffffff)
for x := 0; x < len(key); x++ {
crc = (crc >> 8) ^ crc32tab[(uint64(crc)^uint64(key[x]))&0xff]
}
vbm := b.VBServerMap()
return ((^crc) >> 16) & 0x7fff & (uint32(len(vbm.VBucketMap)) - 1)
}

231
vendor/github.com/couchbaselabs/go-couchbase/views.go generated vendored Normal file
View file

@ -0,0 +1,231 @@
package couchbase
import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"math/rand"
"net/http"
"net/url"
"time"
)
// ViewRow represents a single result from a view.
//
// Doc is present only if include_docs was set on the request.
type ViewRow struct {
ID string
Key interface{}
Value interface{}
Doc *interface{}
}
// A ViewError is a node-specific error indicating a partial failure
// within a view result.
type ViewError struct {
From string
Reason string
}
func (ve ViewError) Error() string {
return "Node: " + ve.From + ", reason: " + ve.Reason
}
// ViewResult holds the entire result set from a view request,
// including the rows and the errors.
type ViewResult struct {
TotalRows int `json:"total_rows"`
Rows []ViewRow
Errors []ViewError
}
func (b *Bucket) randomBaseURL() (*url.URL, error) {
nodes := b.HealthyNodes()
if len(nodes) == 0 {
return nil, errors.New("no available couch rest URLs")
}
nodeNo := rand.Intn(len(nodes))
node := nodes[nodeNo]
b.RLock()
name := b.Name
pool := b.pool
b.RUnlock()
u, err := ParseURL(node.CouchAPIBase)
if err != nil {
return nil, fmt.Errorf("config error: Bucket %q node #%d CouchAPIBase=%q: %v",
name, nodeNo, node.CouchAPIBase, err)
} else if pool != nil {
u.User = pool.client.BaseURL.User
}
return u, err
}
const START_NODE_ID = -1
func (b *Bucket) randomNextURL(lastNode int) (*url.URL, int, error) {
nodes := b.HealthyNodes()
if len(nodes) == 0 {
return nil, -1, errors.New("no available couch rest URLs")
}
var nodeNo int
if lastNode == START_NODE_ID || lastNode >= len(nodes) {
// randomly select a node if the value of lastNode is invalid
nodeNo = rand.Intn(len(nodes))
} else {
// wrap around the node list
nodeNo = (lastNode + 1) % len(nodes)
}
b.RLock()
name := b.Name
pool := b.pool
b.RUnlock()
node := nodes[nodeNo]
u, err := ParseURL(node.CouchAPIBase)
if err != nil {
return nil, -1, fmt.Errorf("config error: Bucket %q node #%d CouchAPIBase=%q: %v",
name, nodeNo, node.CouchAPIBase, err)
} else if pool != nil {
u.User = pool.client.BaseURL.User
}
return u, nodeNo, err
}
// DocID is the document ID type for the startkey_docid parameter in
// views.
type DocID string
func qParam(k, v string) string {
format := `"%s"`
switch k {
case "startkey_docid", "endkey_docid", "stale":
format = "%s"
}
return fmt.Sprintf(format, v)
}
// ViewURL constructs a URL for a view with the given ddoc, view name,
// and parameters.
func (b *Bucket) ViewURL(ddoc, name string,
params map[string]interface{}) (string, error) {
u, err := b.randomBaseURL()
if err != nil {
return "", err
}
values := url.Values{}
for k, v := range params {
switch t := v.(type) {
case DocID:
values[k] = []string{string(t)}
case string:
values[k] = []string{qParam(k, t)}
case int:
values[k] = []string{fmt.Sprintf(`%d`, t)}
case bool:
values[k] = []string{fmt.Sprintf(`%v`, t)}
default:
b, err := json.Marshal(v)
if err != nil {
return "", fmt.Errorf("unsupported value-type %T in Query, "+
"json encoder said %v", t, err)
}
values[k] = []string{fmt.Sprintf(`%v`, string(b))}
}
}
if ddoc == "" && name == "_all_docs" {
u.Path = fmt.Sprintf("/%s/_all_docs", b.GetName())
} else {
u.Path = fmt.Sprintf("/%s/_design/%s/_view/%s", b.GetName(), ddoc, name)
}
u.RawQuery = values.Encode()
return u.String(), nil
}
// ViewCallback is called for each view invocation.
var ViewCallback func(ddoc, name string, start time.Time, err error)
// ViewCustom performs a view request that can map row values to a
// custom type.
//
// See the source to View for an example usage.
func (b *Bucket) ViewCustom(ddoc, name string, params map[string]interface{},
vres interface{}) (err error) {
if SlowServerCallWarningThreshold > 0 {
defer slowLog(time.Now(), "call to ViewCustom(%q, %q)", ddoc, name)
}
if ViewCallback != nil {
defer func(t time.Time) { ViewCallback(ddoc, name, t, err) }(time.Now())
}
u, err := b.ViewURL(ddoc, name, params)
if err != nil {
return err
}
req, err := http.NewRequest("GET", u, nil)
if err != nil {
return err
}
ah := b.authHandler(false /* bucket not yet locked */)
maybeAddAuth(req, ah)
res, err := doHTTPRequest(req)
if err != nil {
return fmt.Errorf("error starting view req at %v: %v", u, err)
}
defer res.Body.Close()
if res.StatusCode != 200 {
bod := make([]byte, 512)
l, _ := res.Body.Read(bod)
return fmt.Errorf("error executing view req at %v: %v - %s",
u, res.Status, bod[:l])
}
body, err := ioutil.ReadAll(res.Body)
if err := json.Unmarshal(body, vres); err != nil {
return nil
}
return nil
}
// View executes a view.
//
// The ddoc parameter is just the bare name of your design doc without
// the "_design/" prefix.
//
// Parameters are string keys with values that correspond to couchbase
// view parameters. Primitive should work fairly naturally (booleans,
// ints, strings, etc...) and other values will attempt to be JSON
// marshaled (useful for array indexing on on view keys, for example).
//
// Example:
//
// res, err := couchbase.View("myddoc", "myview", map[string]interface{}{
// "group_level": 2,
// "startkey_docid": []interface{}{"thing"},
// "endkey_docid": []interface{}{"thing", map[string]string{}},
// "stale": false,
// })
func (b *Bucket) View(ddoc, name string, params map[string]interface{}) (ViewResult, error) {
vres := ViewResult{}
if err := b.ViewCustom(ddoc, name, params, &vres); err != nil {
//error in accessing views. Retry once after a bucket refresh
b.Refresh()
return vres, b.ViewCustom(ddoc, name, params, &vres)
} else {
return vres, nil
}
}

228
vendor/github.com/go-macaron/session/couchbase/couchbase.go generated vendored Normal file
View file

@ -0,0 +1,228 @@
// Copyright 2013 Beego Authors
// Copyright 2014 The Macaron Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package session
import (
"strings"
"sync"
"github.com/couchbaselabs/go-couchbase"
"github.com/go-macaron/session"
)
// CouchbaseSessionStore represents a couchbase session store implementation.
type CouchbaseSessionStore struct {
b *couchbase.Bucket
sid string
lock sync.RWMutex
data map[interface{}]interface{}
maxlifetime int64
}
// Set sets value to given key in session.
func (s *CouchbaseSessionStore) Set(key, val interface{}) error {
s.lock.Lock()
defer s.lock.Unlock()
s.data[key] = val
return nil
}
// Get gets value by given key in session.
func (s *CouchbaseSessionStore) Get(key interface{}) interface{} {
s.lock.RLock()
defer s.lock.RUnlock()
return s.data[key]
}
// Delete delete a key from session.
func (s *CouchbaseSessionStore) Delete(key interface{}) error {
s.lock.Lock()
defer s.lock.Unlock()
delete(s.data, key)
return nil
}
// ID returns current session ID.
func (s *CouchbaseSessionStore) ID() string {
return s.sid
}
// Release releases resource and save data to provider.
func (s *CouchbaseSessionStore) Release() error {
defer s.b.Close()
// Skip encoding if the data is empty
if len(s.data) == 0 {
return nil
}
data, err := session.EncodeGob(s.data)
if err != nil {
return err
}
return s.b.Set(s.sid, int(s.maxlifetime), data)
}
// Flush deletes all session data.
func (s *CouchbaseSessionStore) Flush() error {
s.lock.Lock()
defer s.lock.Unlock()
s.data = make(map[interface{}]interface{})
return nil
}
// CouchbaseProvider represents a couchbase session provider implementation.
type CouchbaseProvider struct {
maxlifetime int64
connStr string
pool string
bucket string
b *couchbase.Bucket
}
func (cp *CouchbaseProvider) getBucket() *couchbase.Bucket {
c, err := couchbase.Connect(cp.connStr)
if err != nil {
return nil
}
pool, err := c.GetPool(cp.pool)
if err != nil {
return nil
}
bucket, err := pool.GetBucket(cp.bucket)
if err != nil {
return nil
}
return bucket
}
// Init initializes memory session provider.
// connStr is couchbase server REST/JSON URL
// e.g. http://host:port/, Pool, Bucket
func (p *CouchbaseProvider) Init(maxlifetime int64, connStr string) error {
p.maxlifetime = maxlifetime
configs := strings.Split(connStr, ",")
if len(configs) > 0 {
p.connStr = configs[0]
}
if len(configs) > 1 {
p.pool = configs[1]
}
if len(configs) > 2 {
p.bucket = configs[2]
}
return nil
}
// Read returns raw session store by session ID.
func (p *CouchbaseProvider) Read(sid string) (session.RawStore, error) {
p.b = p.getBucket()
var doc []byte
err := p.b.Get(sid, &doc)
var kv map[interface{}]interface{}
if doc == nil {
kv = make(map[interface{}]interface{})
} else {
kv, err = session.DecodeGob(doc)
if err != nil {
return nil, err
}
}
cs := &CouchbaseSessionStore{b: p.b, sid: sid, data: kv, maxlifetime: p.maxlifetime}
return cs, nil
}
// Exist returns true if session with given ID exists.
func (p *CouchbaseProvider) Exist(sid string) bool {
p.b = p.getBucket()
defer p.b.Close()
var doc []byte
if err := p.b.Get(sid, &doc); err != nil || doc == nil {
return false
} else {
return true
}
}
// Destory deletes a session by session ID.
func (p *CouchbaseProvider) Destory(sid string) error {
p.b = p.getBucket()
defer p.b.Close()
p.b.Delete(sid)
return nil
}
// Regenerate regenerates a session store from old session ID to new one.
func (p *CouchbaseProvider) Regenerate(oldsid, sid string) (session.RawStore, error) {
p.b = p.getBucket()
var doc []byte
if err := p.b.Get(oldsid, &doc); err != nil || doc == nil {
p.b.Set(sid, int(p.maxlifetime), "")
} else {
err := p.b.Delete(oldsid)
if err != nil {
return nil, err
}
_, _ = p.b.Add(sid, int(p.maxlifetime), doc)
}
err := p.b.Get(sid, &doc)
if err != nil {
return nil, err
}
var kv map[interface{}]interface{}
if doc == nil {
kv = make(map[interface{}]interface{})
} else {
kv, err = session.DecodeGob(doc)
if err != nil {
return nil, err
}
}
cs := &CouchbaseSessionStore{b: p.b, sid: sid, data: kv, maxlifetime: p.maxlifetime}
return cs, nil
}
// Count counts and returns number of sessions.
func (p *CouchbaseProvider) Count() int {
// FIXME
return 0
}
// GC calls GC to clean expired sessions.
func (p *CouchbaseProvider) GC() {}
func init() {
session.Register("couchbase", &CouchbaseProvider{})
}

5
vendor/github.com/go-macaron/session/file.go generated vendored
View file

@ -81,6 +81,11 @@ func (s *FileStore) Release() error {
s.p.lock.Lock() s.p.lock.Lock()
defer s.p.lock.Unlock() defer s.p.lock.Unlock()
// Skip encoding if the data is empty
if len(s.data) == 0 {
return nil
}
data, err := EncodeGob(s.data) data, err := EncodeGob(s.data)
if err != nil { if err != nil {
return err return err

61
vendor/github.com/go-macaron/session/flash.go generated vendored Normal file
View file

@ -0,0 +1,61 @@
// Copyright 2018 The Macaron Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package session
import (
"net/url"
"gopkg.in/macaron.v1"
)
type Flash struct {
ctx *macaron.Context
url.Values
ErrorMsg, WarningMsg, InfoMsg, SuccessMsg string
}
func (f *Flash) set(name, msg string, current ...bool) {
isShow := false
if (len(current) == 0 && macaron.FlashNow) ||
(len(current) > 0 && current[0]) {
isShow = true
}
if isShow {
f.ctx.Data["Flash"] = f
} else {
f.Set(name, msg)
}
}
func (f *Flash) Error(msg string, current ...bool) {
f.ErrorMsg = msg
f.set("error", msg, current...)
}
func (f *Flash) Warning(msg string, current ...bool) {
f.WarningMsg = msg
f.set("warning", msg, current...)
}
func (f *Flash) Info(msg string, current ...bool) {
f.InfoMsg = msg
f.set("info", msg, current...)
}
func (f *Flash) Success(msg string, current ...bool) {
f.SuccessMsg = msg
f.set("success", msg, current...)
}

204
vendor/github.com/go-macaron/session/memcache/memcache.go generated vendored Normal file
View file

@ -0,0 +1,204 @@
// Copyright 2013 Beego Authors
// Copyright 2014 The Macaron Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package session
import (
"fmt"
"strings"
"sync"
"github.com/bradfitz/gomemcache/memcache"
"github.com/go-macaron/session"
)
// MemcacheStore represents a memcache session store implementation.
type MemcacheStore struct {
c *memcache.Client
sid string
expire int32
lock sync.RWMutex
data map[interface{}]interface{}
}
// NewMemcacheStore creates and returns a memcache session store.
func NewMemcacheStore(c *memcache.Client, sid string, expire int32, kv map[interface{}]interface{}) *MemcacheStore {
return &MemcacheStore{
c: c,
sid: sid,
expire: expire,
data: kv,
}
}
func NewItem(sid string, data []byte, expire int32) *memcache.Item {
return &memcache.Item{
Key: sid,
Value: data,
Expiration: expire,
}
}
// Set sets value to given key in session.
func (s *MemcacheStore) Set(key, val interface{}) error {
s.lock.Lock()
defer s.lock.Unlock()
s.data[key] = val
return nil
}
// Get gets value by given key in session.
func (s *MemcacheStore) Get(key interface{}) interface{} {
s.lock.RLock()
defer s.lock.RUnlock()
return s.data[key]
}
// Delete delete a key from session.
func (s *MemcacheStore) Delete(key interface{}) error {
s.lock.Lock()
defer s.lock.Unlock()
delete(s.data, key)
return nil
}
// ID returns current session ID.
func (s *MemcacheStore) ID() string {
return s.sid
}
// Release releases resource and save data to provider.
func (s *MemcacheStore) Release() error {
// Skip encoding if the data is empty
if len(s.data) == 0 {
return nil
}
data, err := session.EncodeGob(s.data)
if err != nil {
return err
}
return s.c.Set(NewItem(s.sid, data, s.expire))
}
// Flush deletes all session data.
func (s *MemcacheStore) Flush() error {
s.lock.Lock()
defer s.lock.Unlock()
s.data = make(map[interface{}]interface{})
return nil
}
// MemcacheProvider represents a memcache session provider implementation.
type MemcacheProvider struct {
c *memcache.Client
expire int32
}
// Init initializes memcache session provider.
// connStrs: 127.0.0.1:9090;127.0.0.1:9091
func (p *MemcacheProvider) Init(expire int64, connStrs string) error {
p.expire = int32(expire)
p.c = memcache.New(strings.Split(connStrs, ";")...)
return nil
}
// Read returns raw session store by session ID.
func (p *MemcacheProvider) Read(sid string) (session.RawStore, error) {
if !p.Exist(sid) {
if err := p.c.Set(NewItem(sid, []byte(""), p.expire)); err != nil {
return nil, err
}
}
var kv map[interface{}]interface{}
item, err := p.c.Get(sid)
if err != nil {
return nil, err
}
if len(item.Value) == 0 {
kv = make(map[interface{}]interface{})
} else {
kv, err = session.DecodeGob(item.Value)
if err != nil {
return nil, err
}
}
return NewMemcacheStore(p.c, sid, p.expire, kv), nil
}
// Exist returns true if session with given ID exists.
func (p *MemcacheProvider) Exist(sid string) bool {
_, err := p.c.Get(sid)
return err == nil
}
// Destory deletes a session by session ID.
func (p *MemcacheProvider) Destory(sid string) error {
return p.c.Delete(sid)
}
// Regenerate regenerates a session store from old session ID to new one.
func (p *MemcacheProvider) Regenerate(oldsid, sid string) (_ session.RawStore, err error) {
if p.Exist(sid) {
return nil, fmt.Errorf("new sid '%s' already exists", sid)
}
item := NewItem(sid, []byte(""), p.expire)
if p.Exist(oldsid) {
item, err = p.c.Get(oldsid)
if err != nil {
return nil, err
} else if err = p.c.Delete(oldsid); err != nil {
return nil, err
}
item.Key = sid
}
if err = p.c.Set(item); err != nil {
return nil, err
}
var kv map[interface{}]interface{}
if len(item.Value) == 0 {
kv = make(map[interface{}]interface{})
} else {
kv, err = session.DecodeGob(item.Value)
if err != nil {
return nil, err
}
}
return NewMemcacheStore(p.c, sid, p.expire, kv), nil
}
// Count counts and returns number of sessions.
func (p *MemcacheProvider) Count() int {
// FIXME: how come this library does not have Stats method?
return -1
}
// GC calls GC to clean expired sessions.
func (p *MemcacheProvider) GC() {}
func init() {
session.Register("memcache", &MemcacheProvider{})
}

200
vendor/github.com/go-macaron/session/mysql/mysql.go generated vendored Normal file
View file

@ -0,0 +1,200 @@
// Copyright 2013 Beego Authors
// Copyright 2014 The Macaron Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package session
import (
"database/sql"
"fmt"
"log"
"sync"
"time"
_ "github.com/go-sql-driver/mysql"
"github.com/go-macaron/session"
)
// MysqlStore represents a mysql session store implementation.
type MysqlStore struct {
c *sql.DB
sid string
lock sync.RWMutex
data map[interface{}]interface{}
}
// NewMysqlStore creates and returns a mysql session store.
func NewMysqlStore(c *sql.DB, sid string, kv map[interface{}]interface{}) *MysqlStore {
return &MysqlStore{
c: c,
sid: sid,
data: kv,
}
}
// Set sets value to given key in session.
func (s *MysqlStore) Set(key, val interface{}) error {
s.lock.Lock()
defer s.lock.Unlock()
s.data[key] = val
return nil
}
// Get gets value by given key in session.
func (s *MysqlStore) Get(key interface{}) interface{} {
s.lock.RLock()
defer s.lock.RUnlock()
return s.data[key]
}
// Delete delete a key from session.
func (s *MysqlStore) Delete(key interface{}) error {
s.lock.Lock()
defer s.lock.Unlock()
delete(s.data, key)
return nil
}
// ID returns current session ID.
func (s *MysqlStore) ID() string {
return s.sid
}
// Release releases resource and save data to provider.
func (s *MysqlStore) Release() error {
// Skip encoding if the data is empty
if len(s.data) == 0 {
return nil
}
data, err := session.EncodeGob(s.data)
if err != nil {
return err
}
_, err = s.c.Exec("UPDATE session SET data=?, expiry=? WHERE `key`=?",
data, time.Now().Unix(), s.sid)
return err
}
// Flush deletes all session data.
func (s *MysqlStore) Flush() error {
s.lock.Lock()
defer s.lock.Unlock()
s.data = make(map[interface{}]interface{})
return nil
}
// MysqlProvider represents a mysql session provider implementation.
type MysqlProvider struct {
c *sql.DB
expire int64
}
// Init initializes mysql session provider.
// connStr: username:password@protocol(address)/dbname?param=value
func (p *MysqlProvider) Init(expire int64, connStr string) (err error) {
p.expire = expire
p.c, err = sql.Open("mysql", connStr)
if err != nil {
return err
}
return p.c.Ping()
}
// Read returns raw session store by session ID.
func (p *MysqlProvider) Read(sid string) (session.RawStore, error) {
var data []byte
err := p.c.QueryRow("SELECT data FROM session WHERE `key`=?", sid).Scan(&data)
if err == sql.ErrNoRows {
_, err = p.c.Exec("INSERT INTO session(`key`,data,expiry) VALUES(?,?,?)",
sid, "", time.Now().Unix())
}
if err != nil {
return nil, err
}
var kv map[interface{}]interface{}
if len(data) == 0 {
kv = make(map[interface{}]interface{})
} else {
kv, err = session.DecodeGob(data)
if err != nil {
return nil, err
}
}
return NewMysqlStore(p.c, sid, kv), nil
}
// Exist returns true if session with given ID exists.
func (p *MysqlProvider) Exist(sid string) bool {
var data []byte
err := p.c.QueryRow("SELECT data FROM session WHERE `key`=?", sid).Scan(&data)
if err != nil && err != sql.ErrNoRows {
panic("session/mysql: error checking existence: " + err.Error())
}
return err != sql.ErrNoRows
}
// Destory deletes a session by session ID.
func (p *MysqlProvider) Destory(sid string) error {
_, err := p.c.Exec("DELETE FROM session WHERE `key`=?", sid)
return err
}
// Regenerate regenerates a session store from old session ID to new one.
func (p *MysqlProvider) Regenerate(oldsid, sid string) (_ session.RawStore, err error) {
if p.Exist(sid) {
return nil, fmt.Errorf("new sid '%s' already exists", sid)
}
if !p.Exist(oldsid) {
if _, err = p.c.Exec("INSERT INTO session(`key`,data,expiry) VALUES(?,?,?)",
oldsid, "", time.Now().Unix()); err != nil {
return nil, err
}
}
if _, err = p.c.Exec("UPDATE session SET `key`=? WHERE `key`=?", sid, oldsid); err != nil {
return nil, err
}
return p.Read(sid)
}
// Count counts and returns number of sessions.
func (p *MysqlProvider) Count() (total int) {
if err := p.c.QueryRow("SELECT COUNT(*) AS NUM FROM session").Scan(&total); err != nil {
panic("session/mysql: error counting records: " + err.Error())
}
return total
}
// GC calls GC to clean expired sessions.
func (p *MysqlProvider) GC() {
if _, err := p.c.Exec("DELETE FROM session WHERE expiry + ? <= UNIX_TIMESTAMP(NOW())", p.expire); err != nil {
log.Printf("session/mysql: error garbage collecting: %v", err)
}
}
func init() {
session.Register("mysql", &MysqlProvider{})
}

208
vendor/github.com/go-macaron/session/nodb/nodb.go generated vendored Normal file
View file

@ -0,0 +1,208 @@
// Copyright 2015 The Macaron Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package session
import (
"fmt"
"sync"
"github.com/lunny/nodb"
"github.com/lunny/nodb/config"
"github.com/go-macaron/session"
)
// NodbStore represents a nodb session store implementation.
type NodbStore struct {
c *nodb.DB
sid string
expire int64
lock sync.RWMutex
data map[interface{}]interface{}
}
// NewNodbStore creates and returns a ledis session store.
func NewNodbStore(c *nodb.DB, sid string, expire int64, kv map[interface{}]interface{}) *NodbStore {
return &NodbStore{
c: c,
expire: expire,
sid: sid,
data: kv,
}
}
// Set sets value to given key in session.
func (s *NodbStore) Set(key, val interface{}) error {
s.lock.Lock()
defer s.lock.Unlock()
s.data[key] = val
return nil
}
// Get gets value by given key in session.
func (s *NodbStore) Get(key interface{}) interface{} {
s.lock.RLock()
defer s.lock.RUnlock()
return s.data[key]
}
// Delete delete a key from session.
func (s *NodbStore) Delete(key interface{}) error {
s.lock.Lock()
defer s.lock.Unlock()
delete(s.data, key)
return nil
}
// ID returns current session ID.
func (s *NodbStore) ID() string {
return s.sid
}
// Release releases resource and save data to provider.
func (s *NodbStore) Release() error {
// Skip encoding if the data is empty
if len(s.data) == 0 {
return nil
}
data, err := session.EncodeGob(s.data)
if err != nil {
return err
}
if err = s.c.Set([]byte(s.sid), data); err != nil {
return err
}
_, err = s.c.Expire([]byte(s.sid), s.expire)
return err
}
// Flush deletes all session data.
func (s *NodbStore) Flush() error {
s.lock.Lock()
defer s.lock.Unlock()
s.data = make(map[interface{}]interface{})
return nil
}
// NodbProvider represents a ledis session provider implementation.
type NodbProvider struct {
c *nodb.DB
expire int64
}
// Init initializes nodb session provider.
func (p *NodbProvider) Init(expire int64, configs string) error {
p.expire = expire
cfg := new(config.Config)
cfg.DataDir = configs
dbs, err := nodb.Open(cfg)
if err != nil {
return fmt.Errorf("session/nodb: error opening db: %v", err)
}
p.c, err = dbs.Select(0)
return err
}
// Read returns raw session store by session ID.
func (p *NodbProvider) Read(sid string) (session.RawStore, error) {
if !p.Exist(sid) {
if err := p.c.Set([]byte(sid), []byte("")); err != nil {
return nil, err
}
}
var kv map[interface{}]interface{}
kvs, err := p.c.Get([]byte(sid))
if err != nil {
return nil, err
}
if len(kvs) == 0 {
kv = make(map[interface{}]interface{})
} else {
kv, err = session.DecodeGob(kvs)
if err != nil {
return nil, err
}
}
return NewNodbStore(p.c, sid, p.expire, kv), nil
}
// Exist returns true if session with given ID exists.
func (p *NodbProvider) Exist(sid string) bool {
count, err := p.c.Exists([]byte(sid))
return err == nil && count > 0
}
// Destory deletes a session by session ID.
func (p *NodbProvider) Destory(sid string) error {
_, err := p.c.Del([]byte(sid))
return err
}
// Regenerate regenerates a session store from old session ID to new one.
func (p *NodbProvider) Regenerate(oldsid, sid string) (_ session.RawStore, err error) {
if p.Exist(sid) {
return nil, fmt.Errorf("new sid '%s' already exists", sid)
}
kvs := make([]byte, 0)
if p.Exist(oldsid) {
if kvs, err = p.c.Get([]byte(oldsid)); err != nil {
return nil, err
} else if _, err = p.c.Del([]byte(oldsid)); err != nil {
return nil, err
}
}
if err = p.c.Set([]byte(sid), kvs); err != nil {
return nil, err
} else if _, err = p.c.Expire([]byte(sid), p.expire); err != nil {
return nil, err
}
var kv map[interface{}]interface{}
if len(kvs) == 0 {
kv = make(map[interface{}]interface{})
} else {
kv, err = session.DecodeGob([]byte(kvs))
if err != nil {
return nil, err
}
}
return NewNodbStore(p.c, sid, p.expire, kv), nil
}
// Count counts and returns number of sessions.
func (p *NodbProvider) Count() int {
// FIXME: how come this library does not have DbSize() method?
return -1
}
// GC calls GC to clean expired sessions.
func (p *NodbProvider) GC() {}
func init() {
session.Register("nodb", &NodbProvider{})
}

201
vendor/github.com/go-macaron/session/postgres/postgres.go generated vendored Normal file
View file

@ -0,0 +1,201 @@
// Copyright 2013 Beego Authors
// Copyright 2014 The Macaron Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package session
import (
"database/sql"
"fmt"
"log"
"sync"
"time"
_ "github.com/lib/pq"
"github.com/go-macaron/session"
)
// PostgresStore represents a postgres session store implementation.
type PostgresStore struct {
c *sql.DB
sid string
lock sync.RWMutex
data map[interface{}]interface{}
}
// NewPostgresStore creates and returns a postgres session store.
func NewPostgresStore(c *sql.DB, sid string, kv map[interface{}]interface{}) *PostgresStore {
return &PostgresStore{
c: c,
sid: sid,
data: kv,
}
}
// Set sets value to given key in session.
func (s *PostgresStore) Set(key, value interface{}) error {
s.lock.Lock()
defer s.lock.Unlock()
s.data[key] = value
return nil
}
// Get gets value by given key in session.
func (s *PostgresStore) Get(key interface{}) interface{} {
s.lock.RLock()
defer s.lock.RUnlock()
return s.data[key]
}
// Delete delete a key from session.
func (s *PostgresStore) Delete(key interface{}) error {
s.lock.Lock()
defer s.lock.Unlock()
delete(s.data, key)
return nil
}
// ID returns current session ID.
func (s *PostgresStore) ID() string {
return s.sid
}
// save postgres session values to database.
// must call this method to save values to database.
func (s *PostgresStore) Release() error {
// Skip encoding if the data is empty
if len(s.data) == 0 {
return nil
}
data, err := session.EncodeGob(s.data)
if err != nil {
return err
}
_, err = s.c.Exec("UPDATE session SET data=$1, expiry=$2 WHERE key=$3",
data, time.Now().Unix(), s.sid)
return err
}
// Flush deletes all session data.
func (s *PostgresStore) Flush() error {
s.lock.Lock()
defer s.lock.Unlock()
s.data = make(map[interface{}]interface{})
return nil
}
// PostgresProvider represents a postgres session provider implementation.
type PostgresProvider struct {
c *sql.DB
maxlifetime int64
}
// Init initializes postgres session provider.
// connStr: user=a password=b host=localhost port=5432 dbname=c sslmode=disable
func (p *PostgresProvider) Init(maxlifetime int64, connStr string) (err error) {
p.maxlifetime = maxlifetime
p.c, err = sql.Open("postgres", connStr)
if err != nil {
return err
}
return p.c.Ping()
}
// Read returns raw session store by session ID.
func (p *PostgresProvider) Read(sid string) (session.RawStore, error) {
var data []byte
err := p.c.QueryRow("SELECT data FROM session WHERE key=$1", sid).Scan(&data)
if err == sql.ErrNoRows {
_, err = p.c.Exec("INSERT INTO session(key,data,expiry) VALUES($1,$2,$3)",
sid, "", time.Now().Unix())
}
if err != nil {
return nil, err
}
var kv map[interface{}]interface{}
if len(data) == 0 {
kv = make(map[interface{}]interface{})
} else {
kv, err = session.DecodeGob(data)
if err != nil {
return nil, err
}
}
return NewPostgresStore(p.c, sid, kv), nil
}
// Exist returns true if session with given ID exists.
func (p *PostgresProvider) Exist(sid string) bool {
var data []byte
err := p.c.QueryRow("SELECT data FROM session WHERE key=$1", sid).Scan(&data)
if err != nil && err != sql.ErrNoRows {
panic("session/postgres: error checking existence: " + err.Error())
}
return err != sql.ErrNoRows
}
// Destory deletes a session by session ID.
func (p *PostgresProvider) Destory(sid string) error {
_, err := p.c.Exec("DELETE FROM session WHERE key=$1", sid)
return err
}
// Regenerate regenerates a session store from old session ID to new one.
func (p *PostgresProvider) Regenerate(oldsid, sid string) (_ session.RawStore, err error) {
if p.Exist(sid) {
return nil, fmt.Errorf("new sid '%s' already exists", sid)
}
if !p.Exist(oldsid) {
if _, err = p.c.Exec("INSERT INTO session(key,data,expiry) VALUES($1,$2,$3)",
oldsid, "", time.Now().Unix()); err != nil {
return nil, err
}
}
if _, err = p.c.Exec("UPDATE session SET key=$1 WHERE key=$2", sid, oldsid); err != nil {
return nil, err
}
return p.Read(sid)
}
// Count counts and returns number of sessions.
func (p *PostgresProvider) Count() (total int) {
if err := p.c.QueryRow("SELECT COUNT(*) AS NUM FROM session").Scan(&total); err != nil {
panic("session/postgres: error counting records: " + err.Error())
}
return total
}
// GC calls GC to clean expired sessions.
func (p *PostgresProvider) GC() {
if _, err := p.c.Exec("DELETE FROM session WHERE EXTRACT(EPOCH FROM NOW()) - expiry > $1", p.maxlifetime); err != nil {
log.Printf("session/postgres: error garbage collecting: %v", err)
}
}
func init() {
session.Register("postgres", &PostgresProvider{})
}

7
vendor/github.com/go-macaron/session/redis/redis.go generated vendored
View file

@ -81,6 +81,11 @@ func (s *RedisStore) ID() string {
// Release releases resource and save data to provider. // Release releases resource and save data to provider.
func (s *RedisStore) Release() error { func (s *RedisStore) Release() error {
// Skip encoding if the data is empty
if len(s.data) == 0 {
return nil
}
data, err := session.EncodeGob(s.data) data, err := session.EncodeGob(s.data)
if err != nil { if err != nil {
return err return err
@ -153,7 +158,7 @@ func (p *RedisProvider) Init(maxlifetime int64, configs string) (err error) {
func (p *RedisProvider) Read(sid string) (session.RawStore, error) { func (p *RedisProvider) Read(sid string) (session.RawStore, error) {
psid := p.prefix + sid psid := p.prefix + sid
if !p.Exist(sid) { if !p.Exist(sid) {
if err := p.c.Set(psid, "").Err(); err != nil { if err := p.c.SetEx(psid, p.duration, "").Err(); err != nil {
return nil, err return nil, err
} }
} }

104
vendor/github.com/go-macaron/session/session.go generated vendored
View file

@ -22,13 +22,12 @@ import (
"fmt" "fmt"
"net/http" "net/http"
"net/url" "net/url"
"strings"
"time" "time"
"gopkg.in/macaron.v1" "gopkg.in/macaron.v1"
) )
const _VERSION = "0.4.0" const _VERSION = "0.6.0"
func Version() string { func Version() string {
return _VERSION return _VERSION
@ -96,6 +95,8 @@ type Options struct {
IDLength int IDLength int
// Configuration section name. Default is "session". // Configuration section name. Default is "session".
Section string Section string
// Ignore release for websocket. Default is false.
IgnoreReleaseForWebSocket bool
} }
func prepareOptions(options []Options) Options { func prepareOptions(options []Options) Options {
@ -138,6 +139,9 @@ func prepareOptions(options []Options) Options {
if opt.IDLength == 0 { if opt.IDLength == 0 {
opt.IDLength = sec.Key("ID_LENGTH").MustInt(16) opt.IDLength = sec.Key("ID_LENGTH").MustInt(16)
} }
if !opt.IgnoreReleaseForWebSocket {
opt.IgnoreReleaseForWebSocket = sec.Key("IGNORE_RELEASE_FOR_WEBSOCKET").MustBool()
}
return opt return opt
} }
@ -187,6 +191,10 @@ func Sessioner(options ...Options) macaron.Handler {
ctx.Next() ctx.Next()
if manager.opt.IgnoreReleaseForWebSocket && ctx.Req.Header.Get("Upgrade") == "websocket" {
return
}
if err = sess.Release(); err != nil { if err = sess.Release(); err != nil {
panic("session(release): " + err.Error()) panic("session(release): " + err.Error())
} }
@ -252,12 +260,30 @@ func (m *Manager) sessionID() string {
return hex.EncodeToString(generateRandomKey(m.opt.IDLength / 2)) return hex.EncodeToString(generateRandomKey(m.opt.IDLength / 2))
} }
// validSessionID tests whether a provided session ID is a valid session ID.
func (m *Manager) validSessionID(sid string) (bool, error) {
if len(sid) != m.opt.IDLength {
return false, errors.New("invalid 'sid': " + sid)
}
for i := range sid {
switch {
case '0' <= sid[i] && sid[i] <= '9':
case 'a' <= sid[i] && sid[i] <= 'f':
default:
return false, errors.New("invalid 'sid': " + sid)
}
}
return true, nil
}
// Start starts a session by generating new one // Start starts a session by generating new one
// or retrieve existence one by reading session ID from HTTP request if it's valid. // or retrieve existence one by reading session ID from HTTP request if it's valid.
func (m *Manager) Start(ctx *macaron.Context) (RawStore, error) { func (m *Manager) Start(ctx *macaron.Context) (RawStore, error) {
sid := ctx.GetCookie(m.opt.CookieName) sid := ctx.GetCookie(m.opt.CookieName)
if len(sid) > 0 && m.provider.Exist(sid) { valid, _ := m.validSessionID(sid)
return m.Read(sid) if len(sid) > 0 && valid && m.provider.Exist(sid) {
return m.provider.Read(sid)
} }
sid = m.sessionID() sid = m.sessionID()
@ -284,10 +310,9 @@ func (m *Manager) Start(ctx *macaron.Context) (RawStore, error) {
// Read returns raw session store by session ID. // Read returns raw session store by session ID.
func (m *Manager) Read(sid string) (RawStore, error) { func (m *Manager) Read(sid string) (RawStore, error) {
// No slashes or dots "./" should ever occur in the sid and to prevent session file forgery bug. // Ensure we're trying to read a valid session ID
// See https://github.com/gogs/gogs/issues/5469 if _, err := m.validSessionID(sid); err != nil {
if strings.ContainsAny(sid, "./") { return nil, err
return nil, errors.New("invalid 'sid': " + sid)
} }
return m.provider.Read(sid) return m.provider.Read(sid)
@ -300,6 +325,10 @@ func (m *Manager) Destory(ctx *macaron.Context) error {
return nil return nil
} }
if _, err := m.validSessionID(sid); err != nil {
return err
}
if err := m.provider.Destory(sid); err != nil { if err := m.provider.Destory(sid); err != nil {
return err return err
} }
@ -318,11 +347,15 @@ func (m *Manager) Destory(ctx *macaron.Context) error {
func (m *Manager) RegenerateId(ctx *macaron.Context) (sess RawStore, err error) { func (m *Manager) RegenerateId(ctx *macaron.Context) (sess RawStore, err error) {
sid := m.sessionID() sid := m.sessionID()
oldsid := ctx.GetCookie(m.opt.CookieName) oldsid := ctx.GetCookie(m.opt.CookieName)
_, err = m.validSessionID(oldsid)
if err != nil {
return nil, err
}
sess, err = m.provider.Regenerate(oldsid, sid) sess, err = m.provider.Regenerate(oldsid, sid)
if err != nil { if err != nil {
return nil, err return nil, err
} }
ck := &http.Cookie{ cookie := &http.Cookie{
Name: m.opt.CookieName, Name: m.opt.CookieName,
Value: sid, Value: sid,
Path: m.opt.CookiePath, Path: m.opt.CookiePath,
@ -331,10 +364,10 @@ func (m *Manager) RegenerateId(ctx *macaron.Context) (sess RawStore, err error)
Domain: m.opt.Domain, Domain: m.opt.Domain,
} }
if m.opt.CookieLifeTime >= 0 { if m.opt.CookieLifeTime >= 0 {
ck.MaxAge = m.opt.CookieLifeTime cookie.MaxAge = m.opt.CookieLifeTime
} }
http.SetCookie(ctx.Resp, ck) http.SetCookie(ctx.Resp, cookie)
ctx.Req.AddCookie(ck) ctx.Req.AddCookie(cookie)
return sess, nil return sess, nil
} }
@ -358,50 +391,3 @@ func (m *Manager) startGC() {
func (m *Manager) SetSecure(secure bool) { func (m *Manager) SetSecure(secure bool) {
m.opt.Secure = secure m.opt.Secure = secure
} }
// ___________.____ _____ _________ ___ ___
// \_ _____/| | / _ \ / _____// | \
// | __) | | / /_\ \ \_____ \/ ~ \
// | \ | |___/ | \/ \ Y /
// \___ / |_______ \____|__ /_______ /\___|_ /
// \/ \/ \/ \/ \/
type Flash struct {
ctx *macaron.Context
url.Values
ErrorMsg, WarningMsg, InfoMsg, SuccessMsg string
}
func (f *Flash) set(name, msg string, current ...bool) {
isShow := false
if (len(current) == 0 && macaron.FlashNow) ||
(len(current) > 0 && current[0]) {
isShow = true
}
if isShow {
f.ctx.Data["Flash"] = f
} else {
f.Set(name, msg)
}
}
func (f *Flash) Error(msg string, current ...bool) {
f.ErrorMsg = msg
f.set("error", msg, current...)
}
func (f *Flash) Warning(msg string, current ...bool) {
f.WarningMsg = msg
f.set("warning", msg, current...)
}
func (f *Flash) Info(msg string, current ...bool) {
f.InfoMsg = msg
f.set("info", msg, current...)
}
func (f *Flash) Success(msg string, current ...bool) {
f.SuccessMsg = msg
f.set("success", msg, current...)
}

5
vendor/github.com/go-macaron/session/utils.go generated vendored
View file

@ -50,11 +50,14 @@ func DecodeGob(encoded []byte) (out map[interface{}]interface{}, err error) {
return out, err return out, err
} }
// NOTE: A local copy in case of underlying package change
var alphanum = []byte("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")
// generateRandomKey creates a random key with the given strength. // generateRandomKey creates a random key with the given strength.
func generateRandomKey(strength int) []byte { func generateRandomKey(strength int) []byte {
k := make([]byte, strength) k := make([]byte, strength)
if n, err := io.ReadFull(rand.Reader, k); n != strength || err != nil { if n, err := io.ReadFull(rand.Reader, k); n != strength || err != nil {
return com.RandomCreateBytes(strength) return com.RandomCreateBytes(strength, alphanum...)
} }
return k return k
} }

27
vendor/github.com/lunny/log/LICENSE generated vendored Normal file
View file

@ -0,0 +1,27 @@
Copyright (c) 2014 - 2016 lunny
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* Neither the name of the {organization} nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

36
vendor/github.com/lunny/log/dbwriter.go generated vendored Normal file
View file

@ -0,0 +1,36 @@
package log
import (
"database/sql"
"time"
)
type DBWriter struct {
db *sql.DB
stmt *sql.Stmt
content chan []byte
}
func NewDBWriter(db *sql.DB) (*DBWriter, error) {
_, err := db.Exec("CREATE TABLE IF NOT EXISTS log (id int, content text, created datetime)")
if err != nil {
return nil, err
}
stmt, err := db.Prepare("INSERT INTO log (content, created) values (?, ?)")
if err != nil {
return nil, err
}
return &DBWriter{db, stmt, make(chan []byte, 1000)}, nil
}
func (w *DBWriter) Write(p []byte) (n int, err error) {
_, err = w.stmt.Exec(string(p), time.Now())
if err == nil {
n = len(p)
}
return
}
func (w *DBWriter) Close() {
w.stmt.Close()
}

112
vendor/github.com/lunny/log/filewriter.go generated vendored Normal file
View file

@ -0,0 +1,112 @@
package log
import (
"io"
"os"
"path/filepath"
"sync"
"time"
)
var _ io.Writer = &Files{}
type ByType int
const (
ByDay ByType = iota
ByHour
ByMonth
)
var (
formats = map[ByType]string{
ByDay: "2006-01-02",
ByHour: "2006-01-02-15",
ByMonth: "2006-01",
}
)
func SetFileFormat(t ByType, format string) {
formats[t] = format
}
func (b ByType) Format() string {
return formats[b]
}
type Files struct {
FileOptions
f *os.File
lastFormat string
lock sync.Mutex
}
type FileOptions struct {
Dir string
ByType ByType
Loc *time.Location
}
func prepareFileOption(opts []FileOptions) FileOptions {
var opt FileOptions
if len(opts) > 0 {
opt = opts[0]
}
if opt.Dir == "" {
opt.Dir = "./"
}
err := os.MkdirAll(opt.Dir, os.ModePerm)
if err != nil {
panic(err.Error())
}
if opt.Loc == nil {
opt.Loc = time.Local
}
return opt
}
func NewFileWriter(opts ...FileOptions) *Files {
opt := prepareFileOption(opts)
return &Files{
FileOptions: opt,
}
}
func (f *Files) getFile() (*os.File, error) {
var err error
t := time.Now().In(f.Loc)
if f.f == nil {
f.lastFormat = t.Format(f.ByType.Format())
f.f, err = os.OpenFile(filepath.Join(f.Dir, f.lastFormat+".log"),
os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0600)
return f.f, err
}
if f.lastFormat != t.Format(f.ByType.Format()) {
f.f.Close()
f.lastFormat = t.Format(f.ByType.Format())
f.f, err = os.OpenFile(filepath.Join(f.Dir, f.lastFormat+".log"),
os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0600)
return f.f, err
}
return f.f, nil
}
func (f *Files) Write(bs []byte) (int, error) {
f.lock.Lock()
defer f.lock.Unlock()
w, err := f.getFile()
if err != nil {
return 0, err
}
return w.Write(bs)
}
func (f *Files) Close() {
if f.f != nil {
f.f.Close()
f.f = nil
}
f.lastFormat = ""
}

595
vendor/github.com/lunny/log/logext.go generated vendored Normal file
View file

@ -0,0 +1,595 @@
package log
import (
"bytes"
"fmt"
"io"
"os"
"runtime"
"strings"
"sync"
"time"
)
// These flags define which text to prefix to each log entry generated by the Logger.
const (
// Bits or'ed together to control what's printed. There is no control over the
// order they appear (the order listed here) or the format they present (as
// described in the comments). A colon appears after these items:
// 2009/0123 01:23:23.123123 /a/b/c/d.go:23: message
Ldate = 1 << iota // the date: 2009/0123
Ltime // the time: 01:23:23
Lmicroseconds // microsecond resolution: 01:23:23.123123. assumes Ltime.
Llongfile // full file name and line number: /a/b/c/d.go:23
Lshortfile // final file name element and line number: d.go:23. overrides Llongfile
Lmodule // module name
Llevel // level: 0(Debug), 1(Info), 2(Warn), 3(Error), 4(Panic), 5(Fatal)
Llongcolor // color will start [info] end of line
Lshortcolor // color only include [info]
LstdFlags = Ldate | Ltime // initial values for the standard logger
//Ldefault = Llevel | LstdFlags | Lshortfile | Llongcolor
) // [prefix][time][level][module][shortfile|longfile]
func Ldefault() int {
if runtime.GOOS == "windows" {
return Llevel | LstdFlags | Lshortfile
}
return Llevel | LstdFlags | Lshortfile | Llongcolor
}
func Version() string {
return "0.2.0.1121"
}
const (
Lall = iota
)
const (
Ldebug = iota
Linfo
Lwarn
Lerror
Lpanic
Lfatal
Lnone
)
const (
ForeBlack = iota + 30 //30
ForeRed //31
ForeGreen //32
ForeYellow //33
ForeBlue //34
ForePurple //35
ForeCyan //36
ForeWhite //37
)
const (
BackBlack = iota + 40 //40
BackRed //41
BackGreen //42
BackYellow //43
BackBlue //44
BackPurple //45
BackCyan //46
BackWhite //47
)
var levels = []string{
"[Debug]",
"[Info]",
"[Warn]",
"[Error]",
"[Panic]",
"[Fatal]",
}
// MUST called before all logs
func SetLevels(lvs []string) {
levels = lvs
}
var colors = []int{
ForeCyan,
ForeGreen,
ForeYellow,
ForeRed,
ForePurple,
ForeBlue,
}
// MUST called before all logs
func SetColors(cls []int) {
colors = cls
}
// A Logger represents an active logging object that generates lines of
// output to an io.Writer. Each logging operation makes a single call to
// the Writer's Write method. A Logger can be used simultaneously from
// multiple goroutines; it guarantees to serialize access to the Writer.
type Logger struct {
mu sync.Mutex // ensures atomic writes; protects the following fields
prefix string // prefix to write at beginning of each line
flag int // properties
Level int
out io.Writer // destination for output
buf bytes.Buffer // for accumulating text to write
levelStats [6]int64
loc *time.Location
}
// New creates a new Logger. The out variable sets the
// destination to which log data will be written.
// The prefix appears at the beginning of each generated log line.
// The flag argument defines the logging properties.
func New(out io.Writer, prefix string, flag int) *Logger {
l := &Logger{out: out, prefix: prefix, Level: 1, flag: flag, loc: time.Local}
if out != os.Stdout {
l.flag = RmColorFlags(l.flag)
}
return l
}
var Std = New(os.Stderr, "", Ldefault())
// Cheap integer to fixed-width decimal ASCII. Give a negative width to avoid zero-padding.
// Knows the buffer has capacity.
func itoa(buf *bytes.Buffer, i int, wid int) {
var u uint = uint(i)
if u == 0 && wid <= 1 {
buf.WriteByte('0')
return
}
// Assemble decimal in reverse order.
var b [32]byte
bp := len(b)
for ; u > 0 || wid > 0; u /= 10 {
bp--
wid--
b[bp] = byte(u%10) + '0'
}
// avoid slicing b to avoid an allocation.
for bp < len(b) {
buf.WriteByte(b[bp])
bp++
}
}
func moduleOf(file string) string {
pos := strings.LastIndex(file, "/")
if pos != -1 {
pos1 := strings.LastIndex(file[:pos], "/src/")
if pos1 != -1 {
return file[pos1+5 : pos]
}
}
return "UNKNOWN"
}
func (l *Logger) formatHeader(buf *bytes.Buffer, t time.Time,
file string, line int, lvl int, reqId string) {
if l.prefix != "" {
buf.WriteString(l.prefix)
}
if l.flag&(Ldate|Ltime|Lmicroseconds) != 0 {
if l.flag&Ldate != 0 {
year, month, day := t.Date()
itoa(buf, year, 4)
buf.WriteByte('/')
itoa(buf, int(month), 2)
buf.WriteByte('/')
itoa(buf, day, 2)
buf.WriteByte(' ')
}
if l.flag&(Ltime|Lmicroseconds) != 0 {
hour, min, sec := t.Clock()
itoa(buf, hour, 2)
buf.WriteByte(':')
itoa(buf, min, 2)
buf.WriteByte(':')
itoa(buf, sec, 2)
if l.flag&Lmicroseconds != 0 {
buf.WriteByte('.')
itoa(buf, t.Nanosecond()/1e3, 6)
}
buf.WriteByte(' ')
}
}
if reqId != "" {
buf.WriteByte('[')
buf.WriteString(reqId)
buf.WriteByte(']')
buf.WriteByte(' ')
}
if l.flag&(Lshortcolor|Llongcolor) != 0 {
buf.WriteString(fmt.Sprintf("\033[1;%dm", colors[lvl]))
}
if l.flag&Llevel != 0 {
buf.WriteString(levels[lvl])
buf.WriteByte(' ')
}
if l.flag&Lshortcolor != 0 {
buf.WriteString("\033[0m")
}
if l.flag&Lmodule != 0 {
buf.WriteByte('[')
buf.WriteString(moduleOf(file))
buf.WriteByte(']')
buf.WriteByte(' ')
}
if l.flag&(Lshortfile|Llongfile) != 0 {
if l.flag&Lshortfile != 0 {
short := file
for i := len(file) - 1; i > 0; i-- {
if file[i] == '/' {
short = file[i+1:]
break
}
}
file = short
}
buf.WriteString(file)
buf.WriteByte(':')
itoa(buf, line, -1)
buf.WriteByte(' ')
}
}
// Output writes the output for a logging event. The string s contains
// the text to print after the prefix specified by the flags of the
// Logger. A newline is appended if the last character of s is not
// already a newline. Calldepth is used to recover the PC and is
// provided for generality, although at the moment on all pre-defined
// paths it will be 2.
func (l *Logger) Output(reqId string, lvl int, calldepth int, s string) error {
if lvl < l.Level {
return nil
}
now := time.Now().In(l.loc) // get this early.
var file string
var line int
l.mu.Lock()
defer l.mu.Unlock()
if l.flag&(Lshortfile|Llongfile|Lmodule) != 0 {
// release lock while getting caller info - it's expensive.
l.mu.Unlock()
var ok bool
_, file, line, ok = runtime.Caller(calldepth)
if !ok {
file = "???"
line = 0
}
l.mu.Lock()
}
l.levelStats[lvl]++
l.buf.Reset()
l.formatHeader(&l.buf, now, file, line, lvl, reqId)
l.buf.WriteString(s)
if l.flag&Llongcolor != 0 {
l.buf.WriteString("\033[0m")
}
if len(s) > 0 && s[len(s)-1] != '\n' {
l.buf.WriteByte('\n')
}
_, err := l.out.Write(l.buf.Bytes())
return err
}
// -----------------------------------------
// Printf calls l.Output to print to the logger.
// Arguments are handled in the manner of fmt.Printf.
func (l *Logger) Printf(format string, v ...interface{}) {
l.Output("", Linfo, 2, fmt.Sprintf(format, v...))
}
// Print calls l.Output to print to the logger.
// Arguments are handled in the manner of fmt.Print.
func (l *Logger) Print(v ...interface{}) {
l.Output("", Linfo, 2, fmt.Sprint(v...))
}
// Println calls l.Output to print to the logger.
// Arguments are handled in the manner of fmt.Println.
func (l *Logger) Println(v ...interface{}) {
l.Output("", Linfo, 2, fmt.Sprintln(v...))
}
// -----------------------------------------
func (l *Logger) Debugf(format string, v ...interface{}) {
l.Output("", Ldebug, 2, fmt.Sprintf(format, v...))
}
func (l *Logger) Debug(v ...interface{}) {
l.Output("", Ldebug, 2, fmt.Sprintln(v...))
}
// -----------------------------------------
func (l *Logger) Infof(format string, v ...interface{}) {
l.Output("", Linfo, 2, fmt.Sprintf(format, v...))
}
func (l *Logger) Info(v ...interface{}) {
l.Output("", Linfo, 2, fmt.Sprintln(v...))
}
// -----------------------------------------
func (l *Logger) Warnf(format string, v ...interface{}) {
l.Output("", Lwarn, 2, fmt.Sprintf(format, v...))
}
func (l *Logger) Warn(v ...interface{}) {
l.Output("", Lwarn, 2, fmt.Sprintln(v...))
}
// -----------------------------------------
func (l *Logger) Errorf(format string, v ...interface{}) {
l.Output("", Lerror, 2, fmt.Sprintf(format, v...))
}
func (l *Logger) Error(v ...interface{}) {
l.Output("", Lerror, 2, fmt.Sprintln(v...))
}
// -----------------------------------------
func (l *Logger) Fatal(v ...interface{}) {
l.Output("", Lfatal, 2, fmt.Sprintln(v...))
os.Exit(1)
}
// Fatalf is equivalent to l.Printf() followed by a call to os.Exit(1).
func (l *Logger) Fatalf(format string, v ...interface{}) {
l.Output("", Lfatal, 2, fmt.Sprintf(format, v...))
os.Exit(1)
}
// -----------------------------------------
// Panic is equivalent to l.Print() followed by a call to panic().
func (l *Logger) Panic(v ...interface{}) {
s := fmt.Sprintln(v...)
l.Output("", Lpanic, 2, s)
panic(s)
}
// Panicf is equivalent to l.Printf() followed by a call to panic().
func (l *Logger) Panicf(format string, v ...interface{}) {
s := fmt.Sprintf(format, v...)
l.Output("", Lpanic, 2, s)
panic(s)
}
// -----------------------------------------
func (l *Logger) Stack(v ...interface{}) {
s := fmt.Sprint(v...)
s += "\n"
buf := make([]byte, 1024*1024)
n := runtime.Stack(buf, true)
s += string(buf[:n])
s += "\n"
l.Output("", Lerror, 2, s)
}
// -----------------------------------------
func (l *Logger) Stat() (stats []int64) {
l.mu.Lock()
v := l.levelStats
l.mu.Unlock()
return v[:]
}
// Flags returns the output flags for the logger.
func (l *Logger) Flags() int {
l.mu.Lock()
defer l.mu.Unlock()
return l.flag
}
func RmColorFlags(flag int) int {
// for un std out, it should not show color since almost them don't support
if flag&Llongcolor != 0 {
flag = flag ^ Llongcolor
}
if flag&Lshortcolor != 0 {
flag = flag ^ Lshortcolor
}
return flag
}
func (l *Logger) Location() *time.Location {
return l.loc
}
func (l *Logger) SetLocation(loc *time.Location) {
l.loc = loc
}
// SetFlags sets the output flags for the logger.
func (l *Logger) SetFlags(flag int) {
l.mu.Lock()
defer l.mu.Unlock()
if l.out != os.Stdout {
flag = RmColorFlags(flag)
}
l.flag = flag
}
// Prefix returns the output prefix for the logger.
func (l *Logger) Prefix() string {
l.mu.Lock()
defer l.mu.Unlock()
return l.prefix
}
// SetPrefix sets the output prefix for the logger.
func (l *Logger) SetPrefix(prefix string) {
l.mu.Lock()
defer l.mu.Unlock()
l.prefix = prefix
}
// SetOutputLevel sets the output level for the logger.
func (l *Logger) SetOutputLevel(lvl int) {
l.mu.Lock()
defer l.mu.Unlock()
l.Level = lvl
}
func (l *Logger) OutputLevel() int {
return l.Level
}
func (l *Logger) SetOutput(w io.Writer) {
l.mu.Lock()
defer l.mu.Unlock()
l.out = w
if w != os.Stdout {
l.flag = RmColorFlags(l.flag)
}
}
// SetOutput sets the output destination for the standard logger.
func SetOutput(w io.Writer) {
Std.SetOutput(w)
}
func SetLocation(loc *time.Location) {
Std.SetLocation(loc)
}
func Location() *time.Location {
return Std.Location()
}
// Flags returns the output flags for the standard logger.
func Flags() int {
return Std.Flags()
}
// SetFlags sets the output flags for the standard logger.
func SetFlags(flag int) {
Std.SetFlags(flag)
}
// Prefix returns the output prefix for the standard logger.
func Prefix() string {
return Std.Prefix()
}
// SetPrefix sets the output prefix for the standard logger.
func SetPrefix(prefix string) {
Std.SetPrefix(prefix)
}
func SetOutputLevel(lvl int) {
Std.SetOutputLevel(lvl)
}
func OutputLevel() int {
return Std.OutputLevel()
}
// -----------------------------------------
// Print calls Output to print to the standard logger.
// Arguments are handled in the manner of fmt.Print.
func Print(v ...interface{}) {
Std.Output("", Linfo, 2, fmt.Sprintln(v...))
}
// Printf calls Output to print to the standard logger.
// Arguments are handled in the manner of fmt.Printf.
func Printf(format string, v ...interface{}) {
Std.Output("", Linfo, 2, fmt.Sprintf(format, v...))
}
// Println calls Output to print to the standard logger.
// Arguments are handled in the manner of fmt.Println.
func Println(v ...interface{}) {
Std.Output("", Linfo, 2, fmt.Sprintln(v...))
}
// -----------------------------------------
func Debugf(format string, v ...interface{}) {
Std.Output("", Ldebug, 2, fmt.Sprintf(format, v...))
}
func Debug(v ...interface{}) {
Std.Output("", Ldebug, 2, fmt.Sprintln(v...))
}
// -----------------------------------------
func Infof(format string, v ...interface{}) {
Std.Output("", Linfo, 2, fmt.Sprintf(format, v...))
}
func Info(v ...interface{}) {
Std.Output("", Linfo, 2, fmt.Sprintln(v...))
}
// -----------------------------------------
func Warnf(format string, v ...interface{}) {
Std.Output("", Lwarn, 2, fmt.Sprintf(format, v...))
}
func Warn(v ...interface{}) {
Std.Output("", Lwarn, 2, fmt.Sprintln(v...))
}
// -----------------------------------------
func Errorf(format string, v ...interface{}) {
Std.Output("", Lerror, 2, fmt.Sprintf(format, v...))
}
func Error(v ...interface{}) {
Std.Output("", Lerror, 2, fmt.Sprintln(v...))
}
// -----------------------------------------
// Fatal is equivalent to Print() followed by a call to os.Exit(1).
func Fatal(v ...interface{}) {
Std.Output("", Lfatal, 2, fmt.Sprintln(v...))
}
// Fatalf is equivalent to Printf() followed by a call to os.Exit(1).
func Fatalf(format string, v ...interface{}) {
Std.Output("", Lfatal, 2, fmt.Sprintf(format, v...))
}
// -----------------------------------------
// Panic is equivalent to Print() followed by a call to panic().
func Panic(v ...interface{}) {
Std.Output("", Lpanic, 2, fmt.Sprintln(v...))
}
// Panicf is equivalent to Printf() followed by a call to panic().
func Panicf(format string, v ...interface{}) {
Std.Output("", Lpanic, 2, fmt.Sprintf(format, v...))
}
// -----------------------------------------
func Stack(v ...interface{}) {
s := fmt.Sprint(v...)
s += "\n"
buf := make([]byte, 1024*1024)
n := runtime.Stack(buf, true)
s += string(buf[:n])
s += "\n"
Std.Output("", Lerror, 2, s)
}
// -----------------------------------------

21
vendor/github.com/lunny/nodb/LICENSE generated vendored Normal file
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@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) 2014 siddontang
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

106
vendor/github.com/lunny/nodb/batch.go generated vendored Normal file
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package nodb
import (
"sync"
"github.com/lunny/nodb/store"
)
type batch struct {
l *Nodb
store.WriteBatch
sync.Locker
logs [][]byte
tx *Tx
}
func (b *batch) Commit() error {
b.l.commitLock.Lock()
defer b.l.commitLock.Unlock()
err := b.WriteBatch.Commit()
if b.l.binlog != nil {
if err == nil {
if b.tx == nil {
b.l.binlog.Log(b.logs...)
} else {
b.tx.logs = append(b.tx.logs, b.logs...)
}
}
b.logs = [][]byte{}
}
return err
}
func (b *batch) Lock() {
b.Locker.Lock()
}
func (b *batch) Unlock() {
if b.l.binlog != nil {
b.logs = [][]byte{}
}
b.WriteBatch.Rollback()
b.Locker.Unlock()
}
func (b *batch) Put(key []byte, value []byte) {
if b.l.binlog != nil {
buf := encodeBinLogPut(key, value)
b.logs = append(b.logs, buf)
}
b.WriteBatch.Put(key, value)
}
func (b *batch) Delete(key []byte) {
if b.l.binlog != nil {
buf := encodeBinLogDelete(key)
b.logs = append(b.logs, buf)
}
b.WriteBatch.Delete(key)
}
type dbBatchLocker struct {
l *sync.Mutex
wrLock *sync.RWMutex
}
func (l *dbBatchLocker) Lock() {
l.wrLock.RLock()
l.l.Lock()
}
func (l *dbBatchLocker) Unlock() {
l.l.Unlock()
l.wrLock.RUnlock()
}
type txBatchLocker struct {
}
func (l *txBatchLocker) Lock() {}
func (l *txBatchLocker) Unlock() {}
type multiBatchLocker struct {
}
func (l *multiBatchLocker) Lock() {}
func (l *multiBatchLocker) Unlock() {}
func (l *Nodb) newBatch(wb store.WriteBatch, locker sync.Locker, tx *Tx) *batch {
b := new(batch)
b.l = l
b.WriteBatch = wb
b.tx = tx
b.Locker = locker
b.logs = [][]byte{}
return b
}

391
vendor/github.com/lunny/nodb/binlog.go generated vendored Normal file
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package nodb
import (
"bufio"
"encoding/binary"
"fmt"
"io"
"io/ioutil"
"os"
"path"
"strconv"
"strings"
"sync"
"time"
"github.com/lunny/log"
"github.com/lunny/nodb/config"
)
type BinLogHead struct {
CreateTime uint32
BatchId uint32
PayloadLen uint32
}
func (h *BinLogHead) Len() int {
return 12
}
func (h *BinLogHead) Write(w io.Writer) error {
if err := binary.Write(w, binary.BigEndian, h.CreateTime); err != nil {
return err
}
if err := binary.Write(w, binary.BigEndian, h.BatchId); err != nil {
return err
}
if err := binary.Write(w, binary.BigEndian, h.PayloadLen); err != nil {
return err
}
return nil
}
func (h *BinLogHead) handleReadError(err error) error {
if err == io.EOF {
return io.ErrUnexpectedEOF
} else {
return err
}
}
func (h *BinLogHead) Read(r io.Reader) error {
var err error
if err = binary.Read(r, binary.BigEndian, &h.CreateTime); err != nil {
return err
}
if err = binary.Read(r, binary.BigEndian, &h.BatchId); err != nil {
return h.handleReadError(err)
}
if err = binary.Read(r, binary.BigEndian, &h.PayloadLen); err != nil {
return h.handleReadError(err)
}
return nil
}
func (h *BinLogHead) InSameBatch(ho *BinLogHead) bool {
if h.CreateTime == ho.CreateTime && h.BatchId == ho.BatchId {
return true
} else {
return false
}
}
/*
index file format:
ledis-bin.00001
ledis-bin.00002
ledis-bin.00003
log file format
Log: Head|PayloadData
Head: createTime|batchId|payloadData
*/
type BinLog struct {
sync.Mutex
path string
cfg *config.BinLogConfig
logFile *os.File
logWb *bufio.Writer
indexName string
logNames []string
lastLogIndex int64
batchId uint32
ch chan struct{}
}
func NewBinLog(cfg *config.Config) (*BinLog, error) {
l := new(BinLog)
l.cfg = &cfg.BinLog
l.cfg.Adjust()
l.path = path.Join(cfg.DataDir, "binlog")
if err := os.MkdirAll(l.path, os.ModePerm); err != nil {
return nil, err
}
l.logNames = make([]string, 0, 16)
l.ch = make(chan struct{})
if err := l.loadIndex(); err != nil {
return nil, err
}
return l, nil
}
func (l *BinLog) flushIndex() error {
data := strings.Join(l.logNames, "\n")
bakName := fmt.Sprintf("%s.bak", l.indexName)
f, err := os.OpenFile(bakName, os.O_WRONLY|os.O_CREATE, 0666)
if err != nil {
log.Error("create binlog bak index error %s", err.Error())
return err
}
if _, err := f.WriteString(data); err != nil {
log.Error("write binlog index error %s", err.Error())
f.Close()
return err
}
f.Close()
if err := os.Rename(bakName, l.indexName); err != nil {
log.Error("rename binlog bak index error %s", err.Error())
return err
}
return nil
}
func (l *BinLog) loadIndex() error {
l.indexName = path.Join(l.path, fmt.Sprintf("ledis-bin.index"))
if _, err := os.Stat(l.indexName); os.IsNotExist(err) {
//no index file, nothing to do
} else {
indexData, err := ioutil.ReadFile(l.indexName)
if err != nil {
return err
}
lines := strings.Split(string(indexData), "\n")
for _, line := range lines {
line = strings.Trim(line, "\r\n ")
if len(line) == 0 {
continue
}
if _, err := os.Stat(path.Join(l.path, line)); err != nil {
log.Error("load index line %s error %s", line, err.Error())
return err
} else {
l.logNames = append(l.logNames, line)
}
}
}
if l.cfg.MaxFileNum > 0 && len(l.logNames) > l.cfg.MaxFileNum {
//remove oldest logfile
if err := l.Purge(len(l.logNames) - l.cfg.MaxFileNum); err != nil {
return err
}
}
var err error
if len(l.logNames) == 0 {
l.lastLogIndex = 1
} else {
lastName := l.logNames[len(l.logNames)-1]
if l.lastLogIndex, err = strconv.ParseInt(path.Ext(lastName)[1:], 10, 64); err != nil {
log.Error("invalid logfile name %s", err.Error())
return err
}
//like mysql, if server restart, a new binlog will create
l.lastLogIndex++
}
return nil
}
func (l *BinLog) getLogFile() string {
return l.FormatLogFileName(l.lastLogIndex)
}
func (l *BinLog) openNewLogFile() error {
var err error
lastName := l.getLogFile()
logPath := path.Join(l.path, lastName)
if l.logFile, err = os.OpenFile(logPath, os.O_CREATE|os.O_WRONLY, 0666); err != nil {
log.Error("open new logfile error %s", err.Error())
return err
}
if l.cfg.MaxFileNum > 0 && len(l.logNames) == l.cfg.MaxFileNum {
l.purge(1)
}
l.logNames = append(l.logNames, lastName)
if l.logWb == nil {
l.logWb = bufio.NewWriterSize(l.logFile, 1024)
} else {
l.logWb.Reset(l.logFile)
}
if err = l.flushIndex(); err != nil {
return err
}
return nil
}
func (l *BinLog) checkLogFileSize() bool {
if l.logFile == nil {
return false
}
st, _ := l.logFile.Stat()
if st.Size() >= int64(l.cfg.MaxFileSize) {
l.closeLog()
return true
}
return false
}
func (l *BinLog) closeLog() {
l.lastLogIndex++
l.logFile.Close()
l.logFile = nil
}
func (l *BinLog) purge(n int) {
for i := 0; i < n; i++ {
logPath := path.Join(l.path, l.logNames[i])
os.Remove(logPath)
}
copy(l.logNames[0:], l.logNames[n:])
l.logNames = l.logNames[0 : len(l.logNames)-n]
}
func (l *BinLog) Close() {
if l.logFile != nil {
l.logFile.Close()
l.logFile = nil
}
}
func (l *BinLog) LogNames() []string {
return l.logNames
}
func (l *BinLog) LogFileName() string {
return l.getLogFile()
}
func (l *BinLog) LogFilePos() int64 {
if l.logFile == nil {
return 0
} else {
st, _ := l.logFile.Stat()
return st.Size()
}
}
func (l *BinLog) LogFileIndex() int64 {
return l.lastLogIndex
}
func (l *BinLog) FormatLogFileName(index int64) string {
return fmt.Sprintf("ledis-bin.%07d", index)
}
func (l *BinLog) FormatLogFilePath(index int64) string {
return path.Join(l.path, l.FormatLogFileName(index))
}
func (l *BinLog) LogPath() string {
return l.path
}
func (l *BinLog) Purge(n int) error {
l.Lock()
defer l.Unlock()
if len(l.logNames) == 0 {
return nil
}
if n >= len(l.logNames) {
n = len(l.logNames)
//can not purge current log file
if l.logNames[n-1] == l.getLogFile() {
n = n - 1
}
}
l.purge(n)
return l.flushIndex()
}
func (l *BinLog) PurgeAll() error {
l.Lock()
defer l.Unlock()
l.closeLog()
return l.openNewLogFile()
}
func (l *BinLog) Log(args ...[]byte) error {
l.Lock()
defer l.Unlock()
var err error
if l.logFile == nil {
if err = l.openNewLogFile(); err != nil {
return err
}
}
head := &BinLogHead{}
head.CreateTime = uint32(time.Now().Unix())
head.BatchId = l.batchId
l.batchId++
for _, data := range args {
head.PayloadLen = uint32(len(data))
if err := head.Write(l.logWb); err != nil {
return err
}
if _, err := l.logWb.Write(data); err != nil {
return err
}
}
if err = l.logWb.Flush(); err != nil {
log.Error("write log error %s", err.Error())
return err
}
l.checkLogFileSize()
close(l.ch)
l.ch = make(chan struct{})
return nil
}
func (l *BinLog) Wait() <-chan struct{} {
return l.ch
}

215
vendor/github.com/lunny/nodb/binlog_util.go generated vendored Normal file
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@ -0,0 +1,215 @@
package nodb
import (
"encoding/binary"
"errors"
"fmt"
"strconv"
)
var (
errBinLogDeleteType = errors.New("invalid bin log delete type")
errBinLogPutType = errors.New("invalid bin log put type")
errBinLogCommandType = errors.New("invalid bin log command type")
)
func encodeBinLogDelete(key []byte) []byte {
buf := make([]byte, 1+len(key))
buf[0] = BinLogTypeDeletion
copy(buf[1:], key)
return buf
}
func decodeBinLogDelete(sz []byte) ([]byte, error) {
if len(sz) < 1 || sz[0] != BinLogTypeDeletion {
return nil, errBinLogDeleteType
}
return sz[1:], nil
}
func encodeBinLogPut(key []byte, value []byte) []byte {
buf := make([]byte, 3+len(key)+len(value))
buf[0] = BinLogTypePut
pos := 1
binary.BigEndian.PutUint16(buf[pos:], uint16(len(key)))
pos += 2
copy(buf[pos:], key)
pos += len(key)
copy(buf[pos:], value)
return buf
}
func decodeBinLogPut(sz []byte) ([]byte, []byte, error) {
if len(sz) < 3 || sz[0] != BinLogTypePut {
return nil, nil, errBinLogPutType
}
keyLen := int(binary.BigEndian.Uint16(sz[1:]))
if 3+keyLen > len(sz) {
return nil, nil, errBinLogPutType
}
return sz[3 : 3+keyLen], sz[3+keyLen:], nil
}
func FormatBinLogEvent(event []byte) (string, error) {
logType := uint8(event[0])
var err error
var k []byte
var v []byte
var buf []byte = make([]byte, 0, 1024)
switch logType {
case BinLogTypePut:
k, v, err = decodeBinLogPut(event)
buf = append(buf, "PUT "...)
case BinLogTypeDeletion:
k, err = decodeBinLogDelete(event)
buf = append(buf, "DELETE "...)
default:
err = errInvalidBinLogEvent
}
if err != nil {
return "", err
}
if buf, err = formatDataKey(buf, k); err != nil {
return "", err
}
if v != nil && len(v) != 0 {
buf = append(buf, fmt.Sprintf(" %q", v)...)
}
return String(buf), nil
}
func formatDataKey(buf []byte, k []byte) ([]byte, error) {
if len(k) < 2 {
return nil, errInvalidBinLogEvent
}
buf = append(buf, fmt.Sprintf("DB:%2d ", k[0])...)
buf = append(buf, fmt.Sprintf("%s ", TypeName[k[1]])...)
db := new(DB)
db.index = k[0]
//to do format at respective place
switch k[1] {
case KVType:
if key, err := db.decodeKVKey(k); err != nil {
return nil, err
} else {
buf = strconv.AppendQuote(buf, String(key))
}
case HashType:
if key, field, err := db.hDecodeHashKey(k); err != nil {
return nil, err
} else {
buf = strconv.AppendQuote(buf, String(key))
buf = append(buf, ' ')
buf = strconv.AppendQuote(buf, String(field))
}
case HSizeType:
if key, err := db.hDecodeSizeKey(k); err != nil {
return nil, err
} else {
buf = strconv.AppendQuote(buf, String(key))
}
case ListType:
if key, seq, err := db.lDecodeListKey(k); err != nil {
return nil, err
} else {
buf = strconv.AppendQuote(buf, String(key))
buf = append(buf, ' ')
buf = strconv.AppendInt(buf, int64(seq), 10)
}
case LMetaType:
if key, err := db.lDecodeMetaKey(k); err != nil {
return nil, err
} else {
buf = strconv.AppendQuote(buf, String(key))
}
case ZSetType:
if key, m, err := db.zDecodeSetKey(k); err != nil {
return nil, err
} else {
buf = strconv.AppendQuote(buf, String(key))
buf = append(buf, ' ')
buf = strconv.AppendQuote(buf, String(m))
}
case ZSizeType:
if key, err := db.zDecodeSizeKey(k); err != nil {
return nil, err
} else {
buf = strconv.AppendQuote(buf, String(key))
}
case ZScoreType:
if key, m, score, err := db.zDecodeScoreKey(k); err != nil {
return nil, err
} else {
buf = strconv.AppendQuote(buf, String(key))
buf = append(buf, ' ')
buf = strconv.AppendQuote(buf, String(m))
buf = append(buf, ' ')
buf = strconv.AppendInt(buf, score, 10)
}
case BitType:
if key, seq, err := db.bDecodeBinKey(k); err != nil {
return nil, err
} else {
buf = strconv.AppendQuote(buf, String(key))
buf = append(buf, ' ')
buf = strconv.AppendUint(buf, uint64(seq), 10)
}
case BitMetaType:
if key, err := db.bDecodeMetaKey(k); err != nil {
return nil, err
} else {
buf = strconv.AppendQuote(buf, String(key))
}
case SetType:
if key, member, err := db.sDecodeSetKey(k); err != nil {
return nil, err
} else {
buf = strconv.AppendQuote(buf, String(key))
buf = append(buf, ' ')
buf = strconv.AppendQuote(buf, String(member))
}
case SSizeType:
if key, err := db.sDecodeSizeKey(k); err != nil {
return nil, err
} else {
buf = strconv.AppendQuote(buf, String(key))
}
case ExpTimeType:
if tp, key, t, err := db.expDecodeTimeKey(k); err != nil {
return nil, err
} else {
buf = append(buf, TypeName[tp]...)
buf = append(buf, ' ')
buf = strconv.AppendQuote(buf, String(key))
buf = append(buf, ' ')
buf = strconv.AppendInt(buf, t, 10)
}
case ExpMetaType:
if tp, key, err := db.expDecodeMetaKey(k); err != nil {
return nil, err
} else {
buf = append(buf, TypeName[tp]...)
buf = append(buf, ' ')
buf = strconv.AppendQuote(buf, String(key))
}
default:
return nil, errInvalidBinLogEvent
}
return buf, nil
}

135
vendor/github.com/lunny/nodb/config/config.go generated vendored Normal file
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package config
import (
"io/ioutil"
"github.com/BurntSushi/toml"
)
type Size int
const (
DefaultAddr string = "127.0.0.1:6380"
DefaultHttpAddr string = "127.0.0.1:11181"
DefaultDBName string = "goleveldb"
DefaultDataDir string = "./data"
)
const (
MaxBinLogFileSize int = 1024 * 1024 * 1024
MaxBinLogFileNum int = 10000
DefaultBinLogFileSize int = MaxBinLogFileSize
DefaultBinLogFileNum int = 10
)
type LevelDBConfig struct {
Compression bool `toml:"compression"`
BlockSize int `toml:"block_size"`
WriteBufferSize int `toml:"write_buffer_size"`
CacheSize int `toml:"cache_size"`
MaxOpenFiles int `toml:"max_open_files"`
}
type LMDBConfig struct {
MapSize int `toml:"map_size"`
NoSync bool `toml:"nosync"`
}
type BinLogConfig struct {
MaxFileSize int `toml:"max_file_size"`
MaxFileNum int `toml:"max_file_num"`
}
type Config struct {
DataDir string `toml:"data_dir"`
DBName string `toml:"db_name"`
LevelDB LevelDBConfig `toml:"leveldb"`
LMDB LMDBConfig `toml:"lmdb"`
BinLog BinLogConfig `toml:"binlog"`
SlaveOf string `toml:"slaveof"`
AccessLog string `toml:"access_log"`
}
func NewConfigWithFile(fileName string) (*Config, error) {
data, err := ioutil.ReadFile(fileName)
if err != nil {
return nil, err
}
return NewConfigWithData(data)
}
func NewConfigWithData(data []byte) (*Config, error) {
cfg := NewConfigDefault()
_, err := toml.Decode(string(data), cfg)
if err != nil {
return nil, err
}
return cfg, nil
}
func NewConfigDefault() *Config {
cfg := new(Config)
cfg.DataDir = DefaultDataDir
cfg.DBName = DefaultDBName
// disable binlog
cfg.BinLog.MaxFileNum = 0
cfg.BinLog.MaxFileSize = 0
// disable replication
cfg.SlaveOf = ""
// disable access log
cfg.AccessLog = ""
cfg.LMDB.MapSize = 20 * 1024 * 1024
cfg.LMDB.NoSync = true
return cfg
}
func (cfg *LevelDBConfig) Adjust() {
if cfg.CacheSize <= 0 {
cfg.CacheSize = 4 * 1024 * 1024
}
if cfg.BlockSize <= 0 {
cfg.BlockSize = 4 * 1024
}
if cfg.WriteBufferSize <= 0 {
cfg.WriteBufferSize = 4 * 1024 * 1024
}
if cfg.MaxOpenFiles < 1024 {
cfg.MaxOpenFiles = 1024
}
}
func (cfg *BinLogConfig) Adjust() {
if cfg.MaxFileSize <= 0 {
cfg.MaxFileSize = DefaultBinLogFileSize
} else if cfg.MaxFileSize > MaxBinLogFileSize {
cfg.MaxFileSize = MaxBinLogFileSize
}
if cfg.MaxFileNum <= 0 {
cfg.MaxFileNum = DefaultBinLogFileNum
} else if cfg.MaxFileNum > MaxBinLogFileNum {
cfg.MaxFileNum = MaxBinLogFileNum
}
}

98
vendor/github.com/lunny/nodb/const.go generated vendored Normal file
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package nodb
import (
"errors"
)
const (
NoneType byte = 0
KVType byte = 1
HashType byte = 2
HSizeType byte = 3
ListType byte = 4
LMetaType byte = 5
ZSetType byte = 6
ZSizeType byte = 7
ZScoreType byte = 8
BitType byte = 9
BitMetaType byte = 10
SetType byte = 11
SSizeType byte = 12
maxDataType byte = 100
ExpTimeType byte = 101
ExpMetaType byte = 102
)
var (
TypeName = map[byte]string{
KVType: "kv",
HashType: "hash",
HSizeType: "hsize",
ListType: "list",
LMetaType: "lmeta",
ZSetType: "zset",
ZSizeType: "zsize",
ZScoreType: "zscore",
BitType: "bit",
BitMetaType: "bitmeta",
SetType: "set",
SSizeType: "ssize",
ExpTimeType: "exptime",
ExpMetaType: "expmeta",
}
)
const (
defaultScanCount int = 10
)
var (
errKeySize = errors.New("invalid key size")
errValueSize = errors.New("invalid value size")
errHashFieldSize = errors.New("invalid hash field size")
errSetMemberSize = errors.New("invalid set member size")
errZSetMemberSize = errors.New("invalid zset member size")
errExpireValue = errors.New("invalid expire value")
)
const (
//we don't support too many databases
MaxDBNumber uint8 = 16
//max key size
MaxKeySize int = 1024
//max hash field size
MaxHashFieldSize int = 1024
//max zset member size
MaxZSetMemberSize int = 1024
//max set member size
MaxSetMemberSize int = 1024
//max value size
MaxValueSize int = 10 * 1024 * 1024
)
var (
ErrScoreMiss = errors.New("zset score miss")
)
const (
BinLogTypeDeletion uint8 = 0x0
BinLogTypePut uint8 = 0x1
BinLogTypeCommand uint8 = 0x2
)
const (
DBAutoCommit uint8 = 0x0
DBInTransaction uint8 = 0x1
DBInMulti uint8 = 0x2
)
var (
Version = "0.1"
)

61
vendor/github.com/lunny/nodb/doc.go generated vendored Normal file
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// package nodb is a high performance embedded NoSQL.
//
// nodb supports various data structure like kv, list, hash and zset like redis.
//
// Other features include binlog replication, data with a limited time-to-live.
//
// Usage
//
// First create a nodb instance before use:
//
// l := nodb.Open(cfg)
//
// cfg is a Config instance which contains configuration for nodb use,
// like DataDir (root directory for nodb working to store data).
//
// After you create a nodb instance, you can select a DB to store you data:
//
// db, _ := l.Select(0)
//
// DB must be selected by a index, nodb supports only 16 databases, so the index range is [0-15].
//
// KV
//
// KV is the most basic nodb type like any other key-value database.
//
// err := db.Set(key, value)
// value, err := db.Get(key)
//
// List
//
// List is simply lists of values, sorted by insertion order.
// You can push or pop value on the list head (left) or tail (right).
//
// err := db.LPush(key, value1)
// err := db.RPush(key, value2)
// value1, err := db.LPop(key)
// value2, err := db.RPop(key)
//
// Hash
//
// Hash is a map between fields and values.
//
// n, err := db.HSet(key, field1, value1)
// n, err := db.HSet(key, field2, value2)
// value1, err := db.HGet(key, field1)
// value2, err := db.HGet(key, field2)
//
// ZSet
//
// ZSet is a sorted collections of values.
// Every member of zset is associated with score, a int64 value which used to sort, from smallest to greatest score.
// Members are unique, but score may be same.
//
// n, err := db.ZAdd(key, ScorePair{score1, member1}, ScorePair{score2, member2})
// ay, err := db.ZRangeByScore(key, minScore, maxScore, 0, -1)
//
// Binlog
//
// nodb supports binlog, so you can sync binlog to another server for replication. If you want to open binlog support, set UseBinLog to true in config.
//
package nodb

200
vendor/github.com/lunny/nodb/dump.go generated vendored Normal file
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package nodb
import (
"bufio"
"bytes"
"encoding/binary"
"io"
"os"
"github.com/siddontang/go-snappy/snappy"
)
//dump format
// fileIndex(bigendian int64)|filePos(bigendian int64)
// |keylen(bigendian int32)|key|valuelen(bigendian int32)|value......
//
//key and value are both compressed for fast transfer dump on network using snappy
type BinLogAnchor struct {
LogFileIndex int64
LogPos int64
}
func (m *BinLogAnchor) WriteTo(w io.Writer) error {
if err := binary.Write(w, binary.BigEndian, m.LogFileIndex); err != nil {
return err
}
if err := binary.Write(w, binary.BigEndian, m.LogPos); err != nil {
return err
}
return nil
}
func (m *BinLogAnchor) ReadFrom(r io.Reader) error {
err := binary.Read(r, binary.BigEndian, &m.LogFileIndex)
if err != nil {
return err
}
err = binary.Read(r, binary.BigEndian, &m.LogPos)
if err != nil {
return err
}
return nil
}
func (l *Nodb) DumpFile(path string) error {
f, err := os.Create(path)
if err != nil {
return err
}
defer f.Close()
return l.Dump(f)
}
func (l *Nodb) Dump(w io.Writer) error {
m := new(BinLogAnchor)
var err error
l.wLock.Lock()
defer l.wLock.Unlock()
if l.binlog != nil {
m.LogFileIndex = l.binlog.LogFileIndex()
m.LogPos = l.binlog.LogFilePos()
}
wb := bufio.NewWriterSize(w, 4096)
if err = m.WriteTo(wb); err != nil {
return err
}
it := l.ldb.NewIterator()
it.SeekToFirst()
compressBuf := make([]byte, 4096)
var key []byte
var value []byte
for ; it.Valid(); it.Next() {
key = it.RawKey()
value = it.RawValue()
if key, err = snappy.Encode(compressBuf, key); err != nil {
return err
}
if err = binary.Write(wb, binary.BigEndian, uint16(len(key))); err != nil {
return err
}
if _, err = wb.Write(key); err != nil {
return err
}
if value, err = snappy.Encode(compressBuf, value); err != nil {
return err
}
if err = binary.Write(wb, binary.BigEndian, uint32(len(value))); err != nil {
return err
}
if _, err = wb.Write(value); err != nil {
return err
}
}
if err = wb.Flush(); err != nil {
return err
}
compressBuf = nil
return nil
}
func (l *Nodb) LoadDumpFile(path string) (*BinLogAnchor, error) {
f, err := os.Open(path)
if err != nil {
return nil, err
}
defer f.Close()
return l.LoadDump(f)
}
func (l *Nodb) LoadDump(r io.Reader) (*BinLogAnchor, error) {
l.wLock.Lock()
defer l.wLock.Unlock()
info := new(BinLogAnchor)
rb := bufio.NewReaderSize(r, 4096)
err := info.ReadFrom(rb)
if err != nil {
return nil, err
}
var keyLen uint16
var valueLen uint32
var keyBuf bytes.Buffer
var valueBuf bytes.Buffer
deKeyBuf := make([]byte, 4096)
deValueBuf := make([]byte, 4096)
var key, value []byte
for {
if err = binary.Read(rb, binary.BigEndian, &keyLen); err != nil && err != io.EOF {
return nil, err
} else if err == io.EOF {
break
}
if _, err = io.CopyN(&keyBuf, rb, int64(keyLen)); err != nil {
return nil, err
}
if key, err = snappy.Decode(deKeyBuf, keyBuf.Bytes()); err != nil {
return nil, err
}
if err = binary.Read(rb, binary.BigEndian, &valueLen); err != nil {
return nil, err
}
if _, err = io.CopyN(&valueBuf, rb, int64(valueLen)); err != nil {
return nil, err
}
if value, err = snappy.Decode(deValueBuf, valueBuf.Bytes()); err != nil {
return nil, err
}
if err = l.ldb.Put(key, value); err != nil {
return nil, err
}
keyBuf.Reset()
valueBuf.Reset()
}
deKeyBuf = nil
deValueBuf = nil
//if binlog enable, we will delete all binlogs and open a new one for handling simply
if l.binlog != nil {
l.binlog.PurgeAll()
}
return info, nil
}

24
vendor/github.com/lunny/nodb/info.go generated vendored Normal file
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package nodb
// todo, add info
// type Keyspace struct {
// Kvs int `json:"kvs"`
// KvExpires int `json:"kv_expires"`
// Lists int `json:"lists"`
// ListExpires int `json:"list_expires"`
// Bitmaps int `json:"bitmaps"`
// BitmapExpires int `json:"bitmap_expires"`
// ZSets int `json:"zsets"`
// ZSetExpires int `json:"zset_expires"`
// Hashes int `json:"hashes"`
// HashExpires int `json:"hahsh_expires"`
// }
// type Info struct {
// KeySpaces [MaxDBNumber]Keyspace
// }

73
vendor/github.com/lunny/nodb/multi.go generated vendored Normal file
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package nodb
import (
"errors"
"fmt"
)
var (
ErrNestMulti = errors.New("nest multi not supported")
ErrMultiDone = errors.New("multi has been closed")
)
type Multi struct {
*DB
}
func (db *DB) IsInMulti() bool {
return db.status == DBInMulti
}
// begin a mutli to execute commands,
// it will block any other write operations before you close the multi, unlike transaction, mutli can not rollback
func (db *DB) Multi() (*Multi, error) {
if db.IsInMulti() {
return nil, ErrNestMulti
}
m := new(Multi)
m.DB = new(DB)
m.DB.status = DBInMulti
m.DB.l = db.l
m.l.wLock.Lock()
m.DB.sdb = db.sdb
m.DB.bucket = db.sdb
m.DB.index = db.index
m.DB.kvBatch = m.newBatch()
m.DB.listBatch = m.newBatch()
m.DB.hashBatch = m.newBatch()
m.DB.zsetBatch = m.newBatch()
m.DB.binBatch = m.newBatch()
m.DB.setBatch = m.newBatch()
return m, nil
}
func (m *Multi) newBatch() *batch {
return m.l.newBatch(m.bucket.NewWriteBatch(), &multiBatchLocker{}, nil)
}
func (m *Multi) Close() error {
if m.bucket == nil {
return ErrMultiDone
}
m.l.wLock.Unlock()
m.bucket = nil
return nil
}
func (m *Multi) Select(index int) error {
if index < 0 || index >= int(MaxDBNumber) {
return fmt.Errorf("invalid db index %d", index)
}
m.DB.index = uint8(index)
return nil
}

128
vendor/github.com/lunny/nodb/nodb.go generated vendored Normal file
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package nodb
import (
"fmt"
"sync"
"time"
"github.com/lunny/log"
"github.com/lunny/nodb/config"
"github.com/lunny/nodb/store"
)
type Nodb struct {
cfg *config.Config
ldb *store.DB
dbs [MaxDBNumber]*DB
quit chan struct{}
jobs *sync.WaitGroup
binlog *BinLog
wLock sync.RWMutex //allow one write at same time
commitLock sync.Mutex //allow one write commit at same time
}
func Open(cfg *config.Config) (*Nodb, error) {
if len(cfg.DataDir) == 0 {
cfg.DataDir = config.DefaultDataDir
}
ldb, err := store.Open(cfg)
if err != nil {
return nil, err
}
l := new(Nodb)
l.quit = make(chan struct{})
l.jobs = new(sync.WaitGroup)
l.ldb = ldb
if cfg.BinLog.MaxFileNum > 0 && cfg.BinLog.MaxFileSize > 0 {
l.binlog, err = NewBinLog(cfg)
if err != nil {
return nil, err
}
} else {
l.binlog = nil
}
for i := uint8(0); i < MaxDBNumber; i++ {
l.dbs[i] = l.newDB(i)
}
l.activeExpireCycle()
return l, nil
}
func (l *Nodb) Close() {
close(l.quit)
l.jobs.Wait()
l.ldb.Close()
if l.binlog != nil {
l.binlog.Close()
l.binlog = nil
}
}
func (l *Nodb) Select(index int) (*DB, error) {
if index < 0 || index >= int(MaxDBNumber) {
return nil, fmt.Errorf("invalid db index %d", index)
}
return l.dbs[index], nil
}
func (l *Nodb) FlushAll() error {
for index, db := range l.dbs {
if _, err := db.FlushAll(); err != nil {
log.Error("flush db %d error %s", index, err.Error())
}
}
return nil
}
// very dangerous to use
func (l *Nodb) DataDB() *store.DB {
return l.ldb
}
func (l *Nodb) activeExpireCycle() {
var executors []*elimination = make([]*elimination, len(l.dbs))
for i, db := range l.dbs {
executors[i] = db.newEliminator()
}
l.jobs.Add(1)
go func() {
tick := time.NewTicker(1 * time.Second)
end := false
done := make(chan struct{})
for !end {
select {
case <-tick.C:
go func() {
for _, eli := range executors {
eli.active()
}
done <- struct{}{}
}()
<-done
case <-l.quit:
end = true
break
}
}
tick.Stop()
l.jobs.Done()
}()
}

171
vendor/github.com/lunny/nodb/nodb_db.go generated vendored Normal file
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package nodb
import (
"fmt"
"sync"
"github.com/lunny/nodb/store"
)
type ibucket interface {
Get(key []byte) ([]byte, error)
Put(key []byte, value []byte) error
Delete(key []byte) error
NewIterator() *store.Iterator
NewWriteBatch() store.WriteBatch
RangeIterator(min []byte, max []byte, rangeType uint8) *store.RangeLimitIterator
RevRangeIterator(min []byte, max []byte, rangeType uint8) *store.RangeLimitIterator
RangeLimitIterator(min []byte, max []byte, rangeType uint8, offset int, count int) *store.RangeLimitIterator
RevRangeLimitIterator(min []byte, max []byte, rangeType uint8, offset int, count int) *store.RangeLimitIterator
}
type DB struct {
l *Nodb
sdb *store.DB
bucket ibucket
index uint8
kvBatch *batch
listBatch *batch
hashBatch *batch
zsetBatch *batch
binBatch *batch
setBatch *batch
status uint8
}
func (l *Nodb) newDB(index uint8) *DB {
d := new(DB)
d.l = l
d.sdb = l.ldb
d.bucket = d.sdb
d.status = DBAutoCommit
d.index = index
d.kvBatch = d.newBatch()
d.listBatch = d.newBatch()
d.hashBatch = d.newBatch()
d.zsetBatch = d.newBatch()
d.binBatch = d.newBatch()
d.setBatch = d.newBatch()
return d
}
func (db *DB) newBatch() *batch {
return db.l.newBatch(db.bucket.NewWriteBatch(), &dbBatchLocker{l: &sync.Mutex{}, wrLock: &db.l.wLock}, nil)
}
func (db *DB) Index() int {
return int(db.index)
}
func (db *DB) IsAutoCommit() bool {
return db.status == DBAutoCommit
}
func (db *DB) FlushAll() (drop int64, err error) {
all := [...](func() (int64, error)){
db.flush,
db.lFlush,
db.hFlush,
db.zFlush,
db.bFlush,
db.sFlush}
for _, flush := range all {
if n, e := flush(); e != nil {
err = e
return
} else {
drop += n
}
}
return
}
func (db *DB) newEliminator() *elimination {
eliminator := newEliminator(db)
eliminator.regRetireContext(KVType, db.kvBatch, db.delete)
eliminator.regRetireContext(ListType, db.listBatch, db.lDelete)
eliminator.regRetireContext(HashType, db.hashBatch, db.hDelete)
eliminator.regRetireContext(ZSetType, db.zsetBatch, db.zDelete)
eliminator.regRetireContext(BitType, db.binBatch, db.bDelete)
eliminator.regRetireContext(SetType, db.setBatch, db.sDelete)
return eliminator
}
func (db *DB) flushRegion(t *batch, minKey []byte, maxKey []byte) (drop int64, err error) {
it := db.bucket.RangeIterator(minKey, maxKey, store.RangeROpen)
for ; it.Valid(); it.Next() {
t.Delete(it.RawKey())
drop++
if drop&1023 == 0 {
if err = t.Commit(); err != nil {
return
}
}
}
it.Close()
return
}
func (db *DB) flushType(t *batch, dataType byte) (drop int64, err error) {
var deleteFunc func(t *batch, key []byte) int64
var metaDataType byte
switch dataType {
case KVType:
deleteFunc = db.delete
metaDataType = KVType
case ListType:
deleteFunc = db.lDelete
metaDataType = LMetaType
case HashType:
deleteFunc = db.hDelete
metaDataType = HSizeType
case ZSetType:
deleteFunc = db.zDelete
metaDataType = ZSizeType
case BitType:
deleteFunc = db.bDelete
metaDataType = BitMetaType
case SetType:
deleteFunc = db.sDelete
metaDataType = SSizeType
default:
return 0, fmt.Errorf("invalid data type: %s", TypeName[dataType])
}
var keys [][]byte
keys, err = db.scan(metaDataType, nil, 1024, false, "")
for len(keys) != 0 || err != nil {
for _, key := range keys {
deleteFunc(t, key)
db.rmExpire(t, dataType, key)
}
if err = t.Commit(); err != nil {
return
} else {
drop += int64(len(keys))
}
keys, err = db.scan(metaDataType, nil, 1024, false, "")
}
return
}

312
vendor/github.com/lunny/nodb/replication.go generated vendored Normal file
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package nodb
import (
"bufio"
"bytes"
"errors"
"io"
"os"
"time"
"github.com/lunny/log"
"github.com/lunny/nodb/store/driver"
)
const (
maxReplBatchNum = 100
maxReplLogSize = 1 * 1024 * 1024
)
var (
ErrSkipEvent = errors.New("skip to next event")
)
var (
errInvalidBinLogEvent = errors.New("invalid binglog event")
errInvalidBinLogFile = errors.New("invalid binlog file")
)
type replBatch struct {
wb driver.IWriteBatch
events [][]byte
l *Nodb
lastHead *BinLogHead
}
func (b *replBatch) Commit() error {
b.l.commitLock.Lock()
defer b.l.commitLock.Unlock()
err := b.wb.Commit()
if err != nil {
b.Rollback()
return err
}
if b.l.binlog != nil {
if err = b.l.binlog.Log(b.events...); err != nil {
b.Rollback()
return err
}
}
b.events = [][]byte{}
b.lastHead = nil
return nil
}
func (b *replBatch) Rollback() error {
b.wb.Rollback()
b.events = [][]byte{}
b.lastHead = nil
return nil
}
func (l *Nodb) replicateEvent(b *replBatch, event []byte) error {
if len(event) == 0 {
return errInvalidBinLogEvent
}
b.events = append(b.events, event)
logType := uint8(event[0])
switch logType {
case BinLogTypePut:
return l.replicatePutEvent(b, event)
case BinLogTypeDeletion:
return l.replicateDeleteEvent(b, event)
default:
return errInvalidBinLogEvent
}
}
func (l *Nodb) replicatePutEvent(b *replBatch, event []byte) error {
key, value, err := decodeBinLogPut(event)
if err != nil {
return err
}
b.wb.Put(key, value)
return nil
}
func (l *Nodb) replicateDeleteEvent(b *replBatch, event []byte) error {
key, err := decodeBinLogDelete(event)
if err != nil {
return err
}
b.wb.Delete(key)
return nil
}
func ReadEventFromReader(rb io.Reader, f func(head *BinLogHead, event []byte) error) error {
head := &BinLogHead{}
var err error
for {
if err = head.Read(rb); err != nil {
if err == io.EOF {
break
} else {
return err
}
}
var dataBuf bytes.Buffer
if _, err = io.CopyN(&dataBuf, rb, int64(head.PayloadLen)); err != nil {
return err
}
err = f(head, dataBuf.Bytes())
if err != nil && err != ErrSkipEvent {
return err
}
}
return nil
}
func (l *Nodb) ReplicateFromReader(rb io.Reader) error {
b := new(replBatch)
b.wb = l.ldb.NewWriteBatch()
b.l = l
f := func(head *BinLogHead, event []byte) error {
if b.lastHead == nil {
b.lastHead = head
} else if !b.lastHead.InSameBatch(head) {
if err := b.Commit(); err != nil {
log.Fatal("replication error %s, skip to next", err.Error())
return ErrSkipEvent
}
b.lastHead = head
}
err := l.replicateEvent(b, event)
if err != nil {
log.Fatal("replication error %s, skip to next", err.Error())
return ErrSkipEvent
}
return nil
}
err := ReadEventFromReader(rb, f)
if err != nil {
b.Rollback()
return err
}
return b.Commit()
}
func (l *Nodb) ReplicateFromData(data []byte) error {
rb := bytes.NewReader(data)
err := l.ReplicateFromReader(rb)
return err
}
func (l *Nodb) ReplicateFromBinLog(filePath string) error {
f, err := os.Open(filePath)
if err != nil {
return err
}
rb := bufio.NewReaderSize(f, 4096)
err = l.ReplicateFromReader(rb)
f.Close()
return err
}
// try to read events, if no events read, try to wait the new event singal until timeout seconds
func (l *Nodb) ReadEventsToTimeout(info *BinLogAnchor, w io.Writer, timeout int) (n int, err error) {
lastIndex := info.LogFileIndex
lastPos := info.LogPos
n = 0
if l.binlog == nil {
//binlog not supported
info.LogFileIndex = 0
info.LogPos = 0
return
}
n, err = l.ReadEventsTo(info, w)
if err == nil && info.LogFileIndex == lastIndex && info.LogPos == lastPos {
//no events read
select {
case <-l.binlog.Wait():
case <-time.After(time.Duration(timeout) * time.Second):
}
return l.ReadEventsTo(info, w)
}
return
}
func (l *Nodb) ReadEventsTo(info *BinLogAnchor, w io.Writer) (n int, err error) {
n = 0
if l.binlog == nil {
//binlog not supported
info.LogFileIndex = 0
info.LogPos = 0
return
}
index := info.LogFileIndex
offset := info.LogPos
filePath := l.binlog.FormatLogFilePath(index)
var f *os.File
f, err = os.Open(filePath)
if os.IsNotExist(err) {
lastIndex := l.binlog.LogFileIndex()
if index == lastIndex {
//no binlog at all
info.LogPos = 0
} else {
//slave binlog info had lost
info.LogFileIndex = -1
}
}
if err != nil {
if os.IsNotExist(err) {
err = nil
}
return
}
defer f.Close()
var fileSize int64
st, _ := f.Stat()
fileSize = st.Size()
if fileSize == info.LogPos {
return
}
if _, err = f.Seek(offset, os.SEEK_SET); err != nil {
//may be invliad seek offset
return
}
var lastHead *BinLogHead = nil
head := &BinLogHead{}
batchNum := 0
for {
if err = head.Read(f); err != nil {
if err == io.EOF {
//we will try to use next binlog
if index < l.binlog.LogFileIndex() {
info.LogFileIndex += 1
info.LogPos = 0
}
err = nil
return
} else {
return
}
}
if lastHead == nil {
lastHead = head
batchNum++
} else if !lastHead.InSameBatch(head) {
lastHead = head
batchNum++
if batchNum > maxReplBatchNum || n > maxReplLogSize {
return
}
}
if err = head.Write(w); err != nil {
return
}
if _, err = io.CopyN(w, f, int64(head.PayloadLen)); err != nil {
return
}
n += (head.Len() + int(head.PayloadLen))
info.LogPos = info.LogPos + int64(head.Len()) + int64(head.PayloadLen)
}
return
}

144
vendor/github.com/lunny/nodb/scan.go generated vendored Normal file
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package nodb
import (
"bytes"
"errors"
"regexp"
"github.com/lunny/nodb/store"
)
var errDataType = errors.New("error data type")
var errMetaKey = errors.New("error meta key")
// Seek search the prefix key
func (db *DB) Seek(key []byte) (*store.Iterator, error) {
return db.seek(KVType, key)
}
func (db *DB) seek(dataType byte, key []byte) (*store.Iterator, error) {
var minKey []byte
var err error
if len(key) > 0 {
if err = checkKeySize(key); err != nil {
return nil, err
}
if minKey, err = db.encodeMetaKey(dataType, key); err != nil {
return nil, err
}
} else {
if minKey, err = db.encodeMinKey(dataType); err != nil {
return nil, err
}
}
it := db.bucket.NewIterator()
it.Seek(minKey)
return it, nil
}
func (db *DB) MaxKey() ([]byte, error) {
return db.encodeMaxKey(KVType)
}
func (db *DB) Key(it *store.Iterator) ([]byte, error) {
return db.decodeMetaKey(KVType, it.Key())
}
func (db *DB) scan(dataType byte, key []byte, count int, inclusive bool, match string) ([][]byte, error) {
var minKey, maxKey []byte
var err error
var r *regexp.Regexp
if len(match) > 0 {
if r, err = regexp.Compile(match); err != nil {
return nil, err
}
}
if len(key) > 0 {
if err = checkKeySize(key); err != nil {
return nil, err
}
if minKey, err = db.encodeMetaKey(dataType, key); err != nil {
return nil, err
}
} else {
if minKey, err = db.encodeMinKey(dataType); err != nil {
return nil, err
}
}
if maxKey, err = db.encodeMaxKey(dataType); err != nil {
return nil, err
}
if count <= 0 {
count = defaultScanCount
}
v := make([][]byte, 0, count)
it := db.bucket.NewIterator()
it.Seek(minKey)
if !inclusive {
if it.Valid() && bytes.Equal(it.RawKey(), minKey) {
it.Next()
}
}
for i := 0; it.Valid() && i < count && bytes.Compare(it.RawKey(), maxKey) < 0; it.Next() {
if k, err := db.decodeMetaKey(dataType, it.Key()); err != nil {
continue
} else if r != nil && !r.Match(k) {
continue
} else {
v = append(v, k)
i++
}
}
it.Close()
return v, nil
}
func (db *DB) encodeMinKey(dataType byte) ([]byte, error) {
return db.encodeMetaKey(dataType, nil)
}
func (db *DB) encodeMaxKey(dataType byte) ([]byte, error) {
k, err := db.encodeMetaKey(dataType, nil)
if err != nil {
return nil, err
}
k[len(k)-1] = dataType + 1
return k, nil
}
func (db *DB) encodeMetaKey(dataType byte, key []byte) ([]byte, error) {
switch dataType {
case KVType:
return db.encodeKVKey(key), nil
case LMetaType:
return db.lEncodeMetaKey(key), nil
case HSizeType:
return db.hEncodeSizeKey(key), nil
case ZSizeType:
return db.zEncodeSizeKey(key), nil
case BitMetaType:
return db.bEncodeMetaKey(key), nil
case SSizeType:
return db.sEncodeSizeKey(key), nil
default:
return nil, errDataType
}
}
func (db *DB) decodeMetaKey(dataType byte, ek []byte) ([]byte, error) {
if len(ek) < 2 || ek[0] != db.index || ek[1] != dataType {
return nil, errMetaKey
}
return ek[2:], nil
}

61
vendor/github.com/lunny/nodb/store/db.go generated vendored Normal file
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@ -0,0 +1,61 @@
package store
import (
"github.com/lunny/nodb/store/driver"
)
type DB struct {
driver.IDB
}
func (db *DB) NewIterator() *Iterator {
it := new(Iterator)
it.it = db.IDB.NewIterator()
return it
}
func (db *DB) NewWriteBatch() WriteBatch {
return db.IDB.NewWriteBatch()
}
func (db *DB) NewSnapshot() (*Snapshot, error) {
var err error
s := &Snapshot{}
if s.ISnapshot, err = db.IDB.NewSnapshot(); err != nil {
return nil, err
}
return s, nil
}
func (db *DB) RangeIterator(min []byte, max []byte, rangeType uint8) *RangeLimitIterator {
return NewRangeLimitIterator(db.NewIterator(), &Range{min, max, rangeType}, &Limit{0, -1})
}
func (db *DB) RevRangeIterator(min []byte, max []byte, rangeType uint8) *RangeLimitIterator {
return NewRevRangeLimitIterator(db.NewIterator(), &Range{min, max, rangeType}, &Limit{0, -1})
}
//count < 0, unlimit.
//
//offset must >= 0, if < 0, will get nothing.
func (db *DB) RangeLimitIterator(min []byte, max []byte, rangeType uint8, offset int, count int) *RangeLimitIterator {
return NewRangeLimitIterator(db.NewIterator(), &Range{min, max, rangeType}, &Limit{offset, count})
}
//count < 0, unlimit.
//
//offset must >= 0, if < 0, will get nothing.
func (db *DB) RevRangeLimitIterator(min []byte, max []byte, rangeType uint8, offset int, count int) *RangeLimitIterator {
return NewRevRangeLimitIterator(db.NewIterator(), &Range{min, max, rangeType}, &Limit{offset, count})
}
func (db *DB) Begin() (*Tx, error) {
tx, err := db.IDB.Begin()
if err != nil {
return nil, err
}
return &Tx{tx}, nil
}

39
vendor/github.com/lunny/nodb/store/driver/batch.go generated vendored Normal file
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@ -0,0 +1,39 @@
package driver
type BatchPuter interface {
BatchPut([]Write) error
}
type Write struct {
Key []byte
Value []byte
}
type WriteBatch struct {
batch BatchPuter
wb []Write
}
func (w *WriteBatch) Put(key, value []byte) {
if value == nil {
value = []byte{}
}
w.wb = append(w.wb, Write{key, value})
}
func (w *WriteBatch) Delete(key []byte) {
w.wb = append(w.wb, Write{key, nil})
}
func (w *WriteBatch) Commit() error {
return w.batch.BatchPut(w.wb)
}
func (w *WriteBatch) Rollback() error {
w.wb = w.wb[0:0]
return nil
}
func NewWriteBatch(puter BatchPuter) IWriteBatch {
return &WriteBatch{puter, []Write{}}
}

67
vendor/github.com/lunny/nodb/store/driver/driver.go generated vendored Normal file
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package driver
import (
"errors"
)
var (
ErrTxSupport = errors.New("transaction is not supported")
)
type IDB interface {
Close() error
Get(key []byte) ([]byte, error)
Put(key []byte, value []byte) error
Delete(key []byte) error
NewIterator() IIterator
NewWriteBatch() IWriteBatch
NewSnapshot() (ISnapshot, error)
Begin() (Tx, error)
}
type ISnapshot interface {
Get(key []byte) ([]byte, error)
NewIterator() IIterator
Close()
}
type IIterator interface {
Close() error
First()
Last()
Seek(key []byte)
Next()
Prev()
Valid() bool
Key() []byte
Value() []byte
}
type IWriteBatch interface {
Put(key []byte, value []byte)
Delete(key []byte)
Commit() error
Rollback() error
}
type Tx interface {
Get(key []byte) ([]byte, error)
Put(key []byte, value []byte) error
Delete(key []byte) error
NewIterator() IIterator
NewWriteBatch() IWriteBatch
Commit() error
Rollback() error
}

46
vendor/github.com/lunny/nodb/store/driver/store.go generated vendored Normal file
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@ -0,0 +1,46 @@
package driver
import (
"fmt"
"github.com/lunny/nodb/config"
)
type Store interface {
String() string
Open(path string, cfg *config.Config) (IDB, error)
Repair(path string, cfg *config.Config) error
}
var dbs = map[string]Store{}
func Register(s Store) {
name := s.String()
if _, ok := dbs[name]; ok {
panic(fmt.Errorf("store %s is registered", s))
}
dbs[name] = s
}
func ListStores() []string {
s := []string{}
for k, _ := range dbs {
s = append(s, k)
}
return s
}
func GetStore(cfg *config.Config) (Store, error) {
if len(cfg.DBName) == 0 {
cfg.DBName = config.DefaultDBName
}
s, ok := dbs[cfg.DBName]
if !ok {
return nil, fmt.Errorf("store %s is not registered", cfg.DBName)
}
return s, nil
}

27
vendor/github.com/lunny/nodb/store/goleveldb/batch.go generated vendored Normal file
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@ -0,0 +1,27 @@
package goleveldb
import (
"github.com/syndtr/goleveldb/leveldb"
)
type WriteBatch struct {
db *DB
wbatch *leveldb.Batch
}
func (w *WriteBatch) Put(key, value []byte) {
w.wbatch.Put(key, value)
}
func (w *WriteBatch) Delete(key []byte) {
w.wbatch.Delete(key)
}
func (w *WriteBatch) Commit() error {
return w.db.db.Write(w.wbatch, nil)
}
func (w *WriteBatch) Rollback() error {
w.wbatch.Reset()
return nil
}

4
vendor/github.com/lunny/nodb/store/goleveldb/const.go generated vendored Normal file
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@ -0,0 +1,4 @@
package goleveldb
const DBName = "goleveldb"
const MemDBName = "memory"

187
vendor/github.com/lunny/nodb/store/goleveldb/db.go generated vendored Normal file
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@ -0,0 +1,187 @@
package goleveldb
import (
"github.com/syndtr/goleveldb/leveldb"
"github.com/syndtr/goleveldb/leveldb/cache"
"github.com/syndtr/goleveldb/leveldb/filter"
"github.com/syndtr/goleveldb/leveldb/opt"
"github.com/syndtr/goleveldb/leveldb/storage"
"github.com/lunny/nodb/config"
"github.com/lunny/nodb/store/driver"
"os"
)
const defaultFilterBits int = 10
type Store struct {
}
func (s Store) String() string {
return DBName
}
type MemStore struct {
}
func (s MemStore) String() string {
return MemDBName
}
type DB struct {
path string
cfg *config.LevelDBConfig
db *leveldb.DB
opts *opt.Options
iteratorOpts *opt.ReadOptions
cache cache.Cache
filter filter.Filter
}
func (s Store) Open(path string, cfg *config.Config) (driver.IDB, error) {
if err := os.MkdirAll(path, os.ModePerm); err != nil {
return nil, err
}
db := new(DB)
db.path = path
db.cfg = &cfg.LevelDB
db.initOpts()
var err error
db.db, err = leveldb.OpenFile(db.path, db.opts)
if err != nil {
return nil, err
}
return db, nil
}
func (s Store) Repair(path string, cfg *config.Config) error {
db, err := leveldb.RecoverFile(path, newOptions(&cfg.LevelDB))
if err != nil {
return err
}
db.Close()
return nil
}
func (s MemStore) Open(path string, cfg *config.Config) (driver.IDB, error) {
db := new(DB)
db.path = path
db.cfg = &cfg.LevelDB
db.initOpts()
var err error
db.db, err = leveldb.Open(storage.NewMemStorage(), db.opts)
if err != nil {
return nil, err
}
return db, nil
}
func (s MemStore) Repair(path string, cfg *config.Config) error {
return nil
}
func (db *DB) initOpts() {
db.opts = newOptions(db.cfg)
db.iteratorOpts = &opt.ReadOptions{}
db.iteratorOpts.DontFillCache = true
}
func newOptions(cfg *config.LevelDBConfig) *opt.Options {
opts := &opt.Options{}
opts.ErrorIfMissing = false
cfg.Adjust()
//opts.BlockCacher = cache.NewLRU(cfg.CacheSize)
opts.BlockCacheCapacity = cfg.CacheSize
//we must use bloomfilter
opts.Filter = filter.NewBloomFilter(defaultFilterBits)
if !cfg.Compression {
opts.Compression = opt.NoCompression
} else {
opts.Compression = opt.SnappyCompression
}
opts.BlockSize = cfg.BlockSize
opts.WriteBuffer = cfg.WriteBufferSize
return opts
}
func (db *DB) Close() error {
return db.db.Close()
}
func (db *DB) Put(key, value []byte) error {
return db.db.Put(key, value, nil)
}
func (db *DB) Get(key []byte) ([]byte, error) {
v, err := db.db.Get(key, nil)
if err == leveldb.ErrNotFound {
return nil, nil
}
return v, nil
}
func (db *DB) Delete(key []byte) error {
return db.db.Delete(key, nil)
}
func (db *DB) NewWriteBatch() driver.IWriteBatch {
wb := &WriteBatch{
db: db,
wbatch: new(leveldb.Batch),
}
return wb
}
func (db *DB) NewIterator() driver.IIterator {
it := &Iterator{
db.db.NewIterator(nil, db.iteratorOpts),
}
return it
}
func (db *DB) Begin() (driver.Tx, error) {
return nil, driver.ErrTxSupport
}
func (db *DB) NewSnapshot() (driver.ISnapshot, error) {
snapshot, err := db.db.GetSnapshot()
if err != nil {
return nil, err
}
s := &Snapshot{
db: db,
snp: snapshot,
}
return s, nil
}
func init() {
driver.Register(Store{})
driver.Register(MemStore{})
}

49
vendor/github.com/lunny/nodb/store/goleveldb/iterator.go generated vendored Normal file
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@ -0,0 +1,49 @@
package goleveldb
import (
"github.com/syndtr/goleveldb/leveldb/iterator"
)
type Iterator struct {
it iterator.Iterator
}
func (it *Iterator) Key() []byte {
return it.it.Key()
}
func (it *Iterator) Value() []byte {
return it.it.Value()
}
func (it *Iterator) Close() error {
if it.it != nil {
it.it.Release()
it.it = nil
}
return nil
}
func (it *Iterator) Valid() bool {
return it.it.Valid()
}
func (it *Iterator) Next() {
it.it.Next()
}
func (it *Iterator) Prev() {
it.it.Prev()
}
func (it *Iterator) First() {
it.it.First()
}
func (it *Iterator) Last() {
it.it.Last()
}
func (it *Iterator) Seek(key []byte) {
it.it.Seek(key)
}

26
vendor/github.com/lunny/nodb/store/goleveldb/snapshot.go generated vendored Normal file
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@ -0,0 +1,26 @@
package goleveldb
import (
"github.com/lunny/nodb/store/driver"
"github.com/syndtr/goleveldb/leveldb"
)
type Snapshot struct {
db *DB
snp *leveldb.Snapshot
}
func (s *Snapshot) Get(key []byte) ([]byte, error) {
return s.snp.Get(key, s.db.iteratorOpts)
}
func (s *Snapshot) NewIterator() driver.IIterator {
it := &Iterator{
s.snp.NewIterator(nil, s.db.iteratorOpts),
}
return it
}
func (s *Snapshot) Close() {
s.snp.Release()
}

327
vendor/github.com/lunny/nodb/store/iterator.go generated vendored Normal file
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@ -0,0 +1,327 @@
package store
import (
"bytes"
"github.com/lunny/nodb/store/driver"
)
const (
IteratorForward uint8 = 0
IteratorBackward uint8 = 1
)
const (
RangeClose uint8 = 0x00
RangeLOpen uint8 = 0x01
RangeROpen uint8 = 0x10
RangeOpen uint8 = 0x11
)
// min must less or equal than max
//
// range type:
//
// close: [min, max]
// open: (min, max)
// lopen: (min, max]
// ropen: [min, max)
//
type Range struct {
Min []byte
Max []byte
Type uint8
}
type Limit struct {
Offset int
Count int
}
type Iterator struct {
it driver.IIterator
}
// Returns a copy of key.
func (it *Iterator) Key() []byte {
k := it.it.Key()
if k == nil {
return nil
}
return append([]byte{}, k...)
}
// Returns a copy of value.
func (it *Iterator) Value() []byte {
v := it.it.Value()
if v == nil {
return nil
}
return append([]byte{}, v...)
}
// Returns a reference of key.
// you must be careful that it will be changed after next iterate.
func (it *Iterator) RawKey() []byte {
return it.it.Key()
}
// Returns a reference of value.
// you must be careful that it will be changed after next iterate.
func (it *Iterator) RawValue() []byte {
return it.it.Value()
}
// Copy key to b, if b len is small or nil, returns a new one.
func (it *Iterator) BufKey(b []byte) []byte {
k := it.RawKey()
if k == nil {
return nil
}
if b == nil {
b = []byte{}
}
b = b[0:0]
return append(b, k...)
}
// Copy value to b, if b len is small or nil, returns a new one.
func (it *Iterator) BufValue(b []byte) []byte {
v := it.RawValue()
if v == nil {
return nil
}
if b == nil {
b = []byte{}
}
b = b[0:0]
return append(b, v...)
}
func (it *Iterator) Close() {
if it.it != nil {
it.it.Close()
it.it = nil
}
}
func (it *Iterator) Valid() bool {
return it.it.Valid()
}
func (it *Iterator) Next() {
it.it.Next()
}
func (it *Iterator) Prev() {
it.it.Prev()
}
func (it *Iterator) SeekToFirst() {
it.it.First()
}
func (it *Iterator) SeekToLast() {
it.it.Last()
}
func (it *Iterator) Seek(key []byte) {
it.it.Seek(key)
}
// Finds by key, if not found, nil returns.
func (it *Iterator) Find(key []byte) []byte {
it.Seek(key)
if it.Valid() {
k := it.RawKey()
if k == nil {
return nil
} else if bytes.Equal(k, key) {
return it.Value()
}
}
return nil
}
// Finds by key, if not found, nil returns, else a reference of value returns.
// you must be careful that it will be changed after next iterate.
func (it *Iterator) RawFind(key []byte) []byte {
it.Seek(key)
if it.Valid() {
k := it.RawKey()
if k == nil {
return nil
} else if bytes.Equal(k, key) {
return it.RawValue()
}
}
return nil
}
type RangeLimitIterator struct {
it *Iterator
r *Range
l *Limit
step int
//0 for IteratorForward, 1 for IteratorBackward
direction uint8
}
func (it *RangeLimitIterator) Key() []byte {
return it.it.Key()
}
func (it *RangeLimitIterator) Value() []byte {
return it.it.Value()
}
func (it *RangeLimitIterator) RawKey() []byte {
return it.it.RawKey()
}
func (it *RangeLimitIterator) RawValue() []byte {
return it.it.RawValue()
}
func (it *RangeLimitIterator) BufKey(b []byte) []byte {
return it.it.BufKey(b)
}
func (it *RangeLimitIterator) BufValue(b []byte) []byte {
return it.it.BufValue(b)
}
func (it *RangeLimitIterator) Valid() bool {
if it.l.Offset < 0 {
return false
} else if !it.it.Valid() {
return false
} else if it.l.Count >= 0 && it.step >= it.l.Count {
return false
}
if it.direction == IteratorForward {
if it.r.Max != nil {
r := bytes.Compare(it.it.RawKey(), it.r.Max)
if it.r.Type&RangeROpen > 0 {
return !(r >= 0)
} else {
return !(r > 0)
}
}
} else {
if it.r.Min != nil {
r := bytes.Compare(it.it.RawKey(), it.r.Min)
if it.r.Type&RangeLOpen > 0 {
return !(r <= 0)
} else {
return !(r < 0)
}
}
}
return true
}
func (it *RangeLimitIterator) Next() {
it.step++
if it.direction == IteratorForward {
it.it.Next()
} else {
it.it.Prev()
}
}
func (it *RangeLimitIterator) Close() {
it.it.Close()
}
func NewRangeLimitIterator(i *Iterator, r *Range, l *Limit) *RangeLimitIterator {
return rangeLimitIterator(i, r, l, IteratorForward)
}
func NewRevRangeLimitIterator(i *Iterator, r *Range, l *Limit) *RangeLimitIterator {
return rangeLimitIterator(i, r, l, IteratorBackward)
}
func NewRangeIterator(i *Iterator, r *Range) *RangeLimitIterator {
return rangeLimitIterator(i, r, &Limit{0, -1}, IteratorForward)
}
func NewRevRangeIterator(i *Iterator, r *Range) *RangeLimitIterator {
return rangeLimitIterator(i, r, &Limit{0, -1}, IteratorBackward)
}
func rangeLimitIterator(i *Iterator, r *Range, l *Limit, direction uint8) *RangeLimitIterator {
it := new(RangeLimitIterator)
it.it = i
it.r = r
it.l = l
it.direction = direction
it.step = 0
if l.Offset < 0 {
return it
}
if direction == IteratorForward {
if r.Min == nil {
it.it.SeekToFirst()
} else {
it.it.Seek(r.Min)
if r.Type&RangeLOpen > 0 {
if it.it.Valid() && bytes.Equal(it.it.RawKey(), r.Min) {
it.it.Next()
}
}
}
} else {
if r.Max == nil {
it.it.SeekToLast()
} else {
it.it.Seek(r.Max)
if !it.it.Valid() {
it.it.SeekToLast()
} else {
if !bytes.Equal(it.it.RawKey(), r.Max) {
it.it.Prev()
}
}
if r.Type&RangeROpen > 0 {
if it.it.Valid() && bytes.Equal(it.it.RawKey(), r.Max) {
it.it.Prev()
}
}
}
}
for i := 0; i < l.Offset; i++ {
if it.it.Valid() {
if it.direction == IteratorForward {
it.it.Next()
} else {
it.it.Prev()
}
}
}
return it
}

16
vendor/github.com/lunny/nodb/store/snapshot.go generated vendored Normal file
View file

@ -0,0 +1,16 @@
package store
import (
"github.com/lunny/nodb/store/driver"
)
type Snapshot struct {
driver.ISnapshot
}
func (s *Snapshot) NewIterator() *Iterator {
it := new(Iterator)
it.it = s.ISnapshot.NewIterator()
return it
}

51
vendor/github.com/lunny/nodb/store/store.go generated vendored Normal file
View file

@ -0,0 +1,51 @@
package store
import (
"fmt"
"os"
"path"
"github.com/lunny/nodb/config"
"github.com/lunny/nodb/store/driver"
_ "github.com/lunny/nodb/store/goleveldb"
)
func getStorePath(cfg *config.Config) string {
return path.Join(cfg.DataDir, fmt.Sprintf("%s_data", cfg.DBName))
}
func Open(cfg *config.Config) (*DB, error) {
s, err := driver.GetStore(cfg)
if err != nil {
return nil, err
}
path := getStorePath(cfg)
if err := os.MkdirAll(path, os.ModePerm); err != nil {
return nil, err
}
idb, err := s.Open(path, cfg)
if err != nil {
return nil, err
}
db := &DB{idb}
return db, nil
}
func Repair(cfg *config.Config) error {
s, err := driver.GetStore(cfg)
if err != nil {
return err
}
path := getStorePath(cfg)
return s.Repair(path, cfg)
}
func init() {
}

42
vendor/github.com/lunny/nodb/store/tx.go generated vendored Normal file
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@ -0,0 +1,42 @@
package store
import (
"github.com/lunny/nodb/store/driver"
)
type Tx struct {
driver.Tx
}
func (tx *Tx) NewIterator() *Iterator {
it := new(Iterator)
it.it = tx.Tx.NewIterator()
return it
}
func (tx *Tx) NewWriteBatch() WriteBatch {
return tx.Tx.NewWriteBatch()
}
func (tx *Tx) RangeIterator(min []byte, max []byte, rangeType uint8) *RangeLimitIterator {
return NewRangeLimitIterator(tx.NewIterator(), &Range{min, max, rangeType}, &Limit{0, -1})
}
func (tx *Tx) RevRangeIterator(min []byte, max []byte, rangeType uint8) *RangeLimitIterator {
return NewRevRangeLimitIterator(tx.NewIterator(), &Range{min, max, rangeType}, &Limit{0, -1})
}
//count < 0, unlimit.
//
//offset must >= 0, if < 0, will get nothing.
func (tx *Tx) RangeLimitIterator(min []byte, max []byte, rangeType uint8, offset int, count int) *RangeLimitIterator {
return NewRangeLimitIterator(tx.NewIterator(), &Range{min, max, rangeType}, &Limit{offset, count})
}
//count < 0, unlimit.
//
//offset must >= 0, if < 0, will get nothing.
func (tx *Tx) RevRangeLimitIterator(min []byte, max []byte, rangeType uint8, offset int, count int) *RangeLimitIterator {
return NewRevRangeLimitIterator(tx.NewIterator(), &Range{min, max, rangeType}, &Limit{offset, count})
}

9
vendor/github.com/lunny/nodb/store/writebatch.go generated vendored Normal file
View file

@ -0,0 +1,9 @@
package store
import (
"github.com/lunny/nodb/store/driver"
)
type WriteBatch interface {
driver.IWriteBatch
}

922
vendor/github.com/lunny/nodb/t_bit.go generated vendored Normal file
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@ -0,0 +1,922 @@
package nodb
import (
"encoding/binary"
"errors"
"sort"
"time"
"github.com/lunny/nodb/store"
)
const (
OPand uint8 = iota + 1
OPor
OPxor
OPnot
)
type BitPair struct {
Pos int32
Val uint8
}
type segBitInfo struct {
Seq uint32
Off uint32
Val uint8
}
type segBitInfoArray []segBitInfo
const (
// byte
segByteWidth uint32 = 9
segByteSize uint32 = 1 << segByteWidth
// bit
segBitWidth uint32 = segByteWidth + 3
segBitSize uint32 = segByteSize << 3
maxByteSize uint32 = 8 << 20
maxSegCount uint32 = maxByteSize / segByteSize
minSeq uint32 = 0
maxSeq uint32 = uint32((maxByteSize << 3) - 1)
)
var bitsInByte = [256]int32{0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3,
4, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 1, 2, 2, 3, 2, 3,
3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4,
5, 5, 6, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4,
3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4,
5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 1, 2,
2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3,
4, 4, 5, 4, 5, 5, 6, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 2, 3, 3, 4, 3, 4, 4,
5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6,
6, 7, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 4, 5, 5, 6, 5,
6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8}
var fillBits = [...]uint8{1, 3, 7, 15, 31, 63, 127, 255}
var emptySegment []byte = make([]byte, segByteSize, segByteSize)
var fillSegment []byte = func() []byte {
data := make([]byte, segByteSize, segByteSize)
for i := uint32(0); i < segByteSize; i++ {
data[i] = 0xff
}
return data
}()
var errBinKey = errors.New("invalid bin key")
var errOffset = errors.New("invalid offset")
var errDuplicatePos = errors.New("duplicate bit pos")
func getBit(sz []byte, offset uint32) uint8 {
index := offset >> 3
if index >= uint32(len(sz)) {
return 0 // error("overflow")
}
offset -= index << 3
return sz[index] >> offset & 1
}
func setBit(sz []byte, offset uint32, val uint8) bool {
if val != 1 && val != 0 {
return false // error("invalid val")
}
index := offset >> 3
if index >= uint32(len(sz)) {
return false // error("overflow")
}
offset -= index << 3
if sz[index]>>offset&1 != val {
sz[index] ^= (1 << offset)
}
return true
}
func (datas segBitInfoArray) Len() int {
return len(datas)
}
func (datas segBitInfoArray) Less(i, j int) bool {
res := (datas)[i].Seq < (datas)[j].Seq
if !res && (datas)[i].Seq == (datas)[j].Seq {
res = (datas)[i].Off < (datas)[j].Off
}
return res
}
func (datas segBitInfoArray) Swap(i, j int) {
datas[i], datas[j] = datas[j], datas[i]
}
func (db *DB) bEncodeMetaKey(key []byte) []byte {
mk := make([]byte, len(key)+2)
mk[0] = db.index
mk[1] = BitMetaType
copy(mk[2:], key)
return mk
}
func (db *DB) bDecodeMetaKey(bkey []byte) ([]byte, error) {
if len(bkey) < 2 || bkey[0] != db.index || bkey[1] != BitMetaType {
return nil, errBinKey
}
return bkey[2:], nil
}
func (db *DB) bEncodeBinKey(key []byte, seq uint32) []byte {
bk := make([]byte, len(key)+8)
pos := 0
bk[pos] = db.index
pos++
bk[pos] = BitType
pos++
binary.BigEndian.PutUint16(bk[pos:], uint16(len(key)))
pos += 2
copy(bk[pos:], key)
pos += len(key)
binary.BigEndian.PutUint32(bk[pos:], seq)
return bk
}
func (db *DB) bDecodeBinKey(bkey []byte) (key []byte, seq uint32, err error) {
if len(bkey) < 8 || bkey[0] != db.index {
err = errBinKey
return
}
keyLen := binary.BigEndian.Uint16(bkey[2:4])
if int(keyLen+8) != len(bkey) {
err = errBinKey
return
}
key = bkey[4 : 4+keyLen]
seq = uint32(binary.BigEndian.Uint32(bkey[4+keyLen:]))
return
}
func (db *DB) bCapByteSize(seq uint32, off uint32) uint32 {
var offByteSize uint32 = (off >> 3) + 1
if offByteSize > segByteSize {
offByteSize = segByteSize
}
return seq<<segByteWidth + offByteSize
}
func (db *DB) bParseOffset(key []byte, offset int32) (seq uint32, off uint32, err error) {
if offset < 0 {
if tailSeq, tailOff, e := db.bGetMeta(key); e != nil {
err = e
return
} else if tailSeq >= 0 {
offset += int32((uint32(tailSeq)<<segBitWidth | uint32(tailOff)) + 1)
if offset < 0 {
err = errOffset
return
}
}
}
off = uint32(offset)
seq = off >> segBitWidth
off &= (segBitSize - 1)
return
}
func (db *DB) bGetMeta(key []byte) (tailSeq int32, tailOff int32, err error) {
var v []byte
mk := db.bEncodeMetaKey(key)
v, err = db.bucket.Get(mk)
if err != nil {
return
}
if v != nil {
tailSeq = int32(binary.LittleEndian.Uint32(v[0:4]))
tailOff = int32(binary.LittleEndian.Uint32(v[4:8]))
} else {
tailSeq = -1
tailOff = -1
}
return
}
func (db *DB) bSetMeta(t *batch, key []byte, tailSeq uint32, tailOff uint32) {
ek := db.bEncodeMetaKey(key)
buf := make([]byte, 8)
binary.LittleEndian.PutUint32(buf[0:4], tailSeq)
binary.LittleEndian.PutUint32(buf[4:8], tailOff)
t.Put(ek, buf)
return
}
func (db *DB) bUpdateMeta(t *batch, key []byte, seq uint32, off uint32) (tailSeq uint32, tailOff uint32, err error) {
var tseq, toff int32
var update bool = false
if tseq, toff, err = db.bGetMeta(key); err != nil {
return
} else if tseq < 0 {
update = true
} else {
tailSeq = uint32(MaxInt32(tseq, 0))
tailOff = uint32(MaxInt32(toff, 0))
update = (seq > tailSeq || (seq == tailSeq && off > tailOff))
}
if update {
db.bSetMeta(t, key, seq, off)
tailSeq = seq
tailOff = off
}
return
}
func (db *DB) bDelete(t *batch, key []byte) (drop int64) {
mk := db.bEncodeMetaKey(key)
t.Delete(mk)
minKey := db.bEncodeBinKey(key, minSeq)
maxKey := db.bEncodeBinKey(key, maxSeq)
it := db.bucket.RangeIterator(minKey, maxKey, store.RangeClose)
for ; it.Valid(); it.Next() {
t.Delete(it.RawKey())
drop++
}
it.Close()
return drop
}
func (db *DB) bGetSegment(key []byte, seq uint32) ([]byte, []byte, error) {
bk := db.bEncodeBinKey(key, seq)
segment, err := db.bucket.Get(bk)
if err != nil {
return bk, nil, err
}
return bk, segment, nil
}
func (db *DB) bAllocateSegment(key []byte, seq uint32) ([]byte, []byte, error) {
bk, segment, err := db.bGetSegment(key, seq)
if err == nil && segment == nil {
segment = make([]byte, segByteSize, segByteSize)
}
return bk, segment, err
}
func (db *DB) bIterator(key []byte) *store.RangeLimitIterator {
sk := db.bEncodeBinKey(key, minSeq)
ek := db.bEncodeBinKey(key, maxSeq)
return db.bucket.RangeIterator(sk, ek, store.RangeClose)
}
func (db *DB) bSegAnd(a []byte, b []byte, res *[]byte) {
if a == nil || b == nil {
*res = nil
return
}
data := *res
if data == nil {
data = make([]byte, segByteSize, segByteSize)
*res = data
}
for i := uint32(0); i < segByteSize; i++ {
data[i] = a[i] & b[i]
}
return
}
func (db *DB) bSegOr(a []byte, b []byte, res *[]byte) {
if a == nil || b == nil {
if a == nil && b == nil {
*res = nil
} else if a == nil {
*res = b
} else {
*res = a
}
return
}
data := *res
if data == nil {
data = make([]byte, segByteSize, segByteSize)
*res = data
}
for i := uint32(0); i < segByteSize; i++ {
data[i] = a[i] | b[i]
}
return
}
func (db *DB) bSegXor(a []byte, b []byte, res *[]byte) {
if a == nil && b == nil {
*res = fillSegment
return
}
if a == nil {
a = emptySegment
}
if b == nil {
b = emptySegment
}
data := *res
if data == nil {
data = make([]byte, segByteSize, segByteSize)
*res = data
}
for i := uint32(0); i < segByteSize; i++ {
data[i] = a[i] ^ b[i]
}
return
}
func (db *DB) bExpireAt(key []byte, when int64) (int64, error) {
t := db.binBatch
t.Lock()
defer t.Unlock()
if seq, _, err := db.bGetMeta(key); err != nil || seq < 0 {
return 0, err
} else {
db.expireAt(t, BitType, key, when)
if err := t.Commit(); err != nil {
return 0, err
}
}
return 1, nil
}
func (db *DB) bCountByte(val byte, soff uint32, eoff uint32) int32 {
if soff > eoff {
soff, eoff = eoff, soff
}
mask := uint8(0)
if soff > 0 {
mask |= fillBits[soff-1]
}
if eoff < 7 {
mask |= (fillBits[7] ^ fillBits[eoff])
}
mask = fillBits[7] ^ mask
return bitsInByte[val&mask]
}
func (db *DB) bCountSeg(key []byte, seq uint32, soff uint32, eoff uint32) (cnt int32, err error) {
if soff >= segBitSize || soff < 0 ||
eoff >= segBitSize || eoff < 0 {
return
}
var segment []byte
if _, segment, err = db.bGetSegment(key, seq); err != nil {
return
}
if segment == nil {
return
}
if soff > eoff {
soff, eoff = eoff, soff
}
headIdx := int(soff >> 3)
endIdx := int(eoff >> 3)
sByteOff := soff - ((soff >> 3) << 3)
eByteOff := eoff - ((eoff >> 3) << 3)
if headIdx == endIdx {
cnt = db.bCountByte(segment[headIdx], sByteOff, eByteOff)
} else {
cnt = db.bCountByte(segment[headIdx], sByteOff, 7) +
db.bCountByte(segment[endIdx], 0, eByteOff)
}
// sum up following bytes
for idx, end := headIdx+1, endIdx-1; idx <= end; idx += 1 {
cnt += bitsInByte[segment[idx]]
if idx == end {
break
}
}
return
}
func (db *DB) BGet(key []byte) (data []byte, err error) {
if err = checkKeySize(key); err != nil {
return
}
var ts, to int32
if ts, to, err = db.bGetMeta(key); err != nil || ts < 0 {
return
}
var tailSeq, tailOff = uint32(ts), uint32(to)
var capByteSize uint32 = db.bCapByteSize(tailSeq, tailOff)
data = make([]byte, capByteSize, capByteSize)
minKey := db.bEncodeBinKey(key, minSeq)
maxKey := db.bEncodeBinKey(key, tailSeq)
it := db.bucket.RangeIterator(minKey, maxKey, store.RangeClose)
var seq, s, e uint32
for ; it.Valid(); it.Next() {
if _, seq, err = db.bDecodeBinKey(it.RawKey()); err != nil {
data = nil
break
}
s = seq << segByteWidth
e = MinUInt32(s+segByteSize, capByteSize)
copy(data[s:e], it.RawValue())
}
it.Close()
return
}
func (db *DB) BDelete(key []byte) (drop int64, err error) {
if err = checkKeySize(key); err != nil {
return
}
t := db.binBatch
t.Lock()
defer t.Unlock()
drop = db.bDelete(t, key)
db.rmExpire(t, BitType, key)
err = t.Commit()
return
}
func (db *DB) BSetBit(key []byte, offset int32, val uint8) (ori uint8, err error) {
if err = checkKeySize(key); err != nil {
return
}
// todo : check offset
var seq, off uint32
if seq, off, err = db.bParseOffset(key, offset); err != nil {
return 0, err
}
var bk, segment []byte
if bk, segment, err = db.bAllocateSegment(key, seq); err != nil {
return 0, err
}
if segment != nil {
ori = getBit(segment, off)
if setBit(segment, off, val) {
t := db.binBatch
t.Lock()
defer t.Unlock()
t.Put(bk, segment)
if _, _, e := db.bUpdateMeta(t, key, seq, off); e != nil {
err = e
return
}
err = t.Commit()
}
}
return
}
func (db *DB) BMSetBit(key []byte, args ...BitPair) (place int64, err error) {
if err = checkKeySize(key); err != nil {
return
}
// (ps : so as to aviod wasting memory copy while calling db.Get() and batch.Put(),
// here we sequence the params by pos, so that we can merge the execution of
// diff pos setting which targets on the same segment respectively. )
// #1 : sequence request data
var argCnt = len(args)
var bitInfos segBitInfoArray = make(segBitInfoArray, argCnt)
var seq, off uint32
for i, info := range args {
if seq, off, err = db.bParseOffset(key, info.Pos); err != nil {
return
}
bitInfos[i].Seq = seq
bitInfos[i].Off = off
bitInfos[i].Val = info.Val
}
sort.Sort(bitInfos)
for i := 1; i < argCnt; i++ {
if bitInfos[i].Seq == bitInfos[i-1].Seq && bitInfos[i].Off == bitInfos[i-1].Off {
return 0, errDuplicatePos
}
}
// #2 : execute bit set in order
t := db.binBatch
t.Lock()
defer t.Unlock()
var curBinKey, curSeg []byte
var curSeq, maxSeq, maxOff uint32
for _, info := range bitInfos {
if curSeg != nil && info.Seq != curSeq {
t.Put(curBinKey, curSeg)
curSeg = nil
}
if curSeg == nil {
curSeq = info.Seq
if curBinKey, curSeg, err = db.bAllocateSegment(key, info.Seq); err != nil {
return
}
if curSeg == nil {
continue
}
}
if setBit(curSeg, info.Off, info.Val) {
maxSeq = info.Seq
maxOff = info.Off
place++
}
}
if curSeg != nil {
t.Put(curBinKey, curSeg)
}
// finally, update meta
if place > 0 {
if _, _, err = db.bUpdateMeta(t, key, maxSeq, maxOff); err != nil {
return
}
err = t.Commit()
}
return
}
func (db *DB) BGetBit(key []byte, offset int32) (uint8, error) {
if seq, off, err := db.bParseOffset(key, offset); err != nil {
return 0, err
} else {
_, segment, err := db.bGetSegment(key, seq)
if err != nil {
return 0, err
}
if segment == nil {
return 0, nil
} else {
return getBit(segment, off), nil
}
}
}
// func (db *DB) BGetRange(key []byte, start int32, end int32) ([]byte, error) {
// section := make([]byte)
// return
// }
func (db *DB) BCount(key []byte, start int32, end int32) (cnt int32, err error) {
var sseq, soff uint32
if sseq, soff, err = db.bParseOffset(key, start); err != nil {
return
}
var eseq, eoff uint32
if eseq, eoff, err = db.bParseOffset(key, end); err != nil {
return
}
if sseq > eseq || (sseq == eseq && soff > eoff) {
sseq, eseq = eseq, sseq
soff, eoff = eoff, soff
}
var segCnt int32
if eseq == sseq {
if segCnt, err = db.bCountSeg(key, sseq, soff, eoff); err != nil {
return 0, err
}
cnt = segCnt
} else {
if segCnt, err = db.bCountSeg(key, sseq, soff, segBitSize-1); err != nil {
return 0, err
} else {
cnt += segCnt
}
if segCnt, err = db.bCountSeg(key, eseq, 0, eoff); err != nil {
return 0, err
} else {
cnt += segCnt
}
}
// middle segs
var segment []byte
skey := db.bEncodeBinKey(key, sseq)
ekey := db.bEncodeBinKey(key, eseq)
it := db.bucket.RangeIterator(skey, ekey, store.RangeOpen)
for ; it.Valid(); it.Next() {
segment = it.RawValue()
for _, bt := range segment {
cnt += bitsInByte[bt]
}
}
it.Close()
return
}
func (db *DB) BTail(key []byte) (int32, error) {
// effective length of data, the highest bit-pos set in history
tailSeq, tailOff, err := db.bGetMeta(key)
if err != nil {
return 0, err
}
tail := int32(-1)
if tailSeq >= 0 {
tail = int32(uint32(tailSeq)<<segBitWidth | uint32(tailOff))
}
return tail, nil
}
func (db *DB) BOperation(op uint8, dstkey []byte, srckeys ...[]byte) (blen int32, err error) {
// blen -
// the total bit size of data stored in destination key,
// that is equal to the size of the longest input string.
var exeOp func([]byte, []byte, *[]byte)
switch op {
case OPand:
exeOp = db.bSegAnd
case OPor:
exeOp = db.bSegOr
case OPxor, OPnot:
exeOp = db.bSegXor
default:
return
}
if dstkey == nil || srckeys == nil {
return
}
t := db.binBatch
t.Lock()
defer t.Unlock()
var srcKseq, srcKoff int32
var seq, off, maxDstSeq, maxDstOff uint32
var keyNum int = len(srckeys)
var validKeyNum int
for i := 0; i < keyNum; i++ {
if srcKseq, srcKoff, err = db.bGetMeta(srckeys[i]); err != nil {
return
} else if srcKseq < 0 {
srckeys[i] = nil
continue
}
validKeyNum++
seq = uint32(srcKseq)
off = uint32(srcKoff)
if seq > maxDstSeq || (seq == maxDstSeq && off > maxDstOff) {
maxDstSeq = seq
maxDstOff = off
}
}
if (op == OPnot && validKeyNum != 1) ||
(op != OPnot && validKeyNum < 2) {
return // with not enough existing source key
}
var srcIdx int
for srcIdx = 0; srcIdx < keyNum; srcIdx++ {
if srckeys[srcIdx] != nil {
break
}
}
// init - data
var segments = make([][]byte, maxDstSeq+1)
if op == OPnot {
// ps :
// ( ~num == num ^ 0x11111111 )
// we init the result segments with all bit set,
// then we can calculate through the way of 'xor'.
// ahead segments bin format : 1111 ... 1111
for i := uint32(0); i < maxDstSeq; i++ {
segments[i] = fillSegment
}
// last segment bin format : 1111..1100..0000
var tailSeg = make([]byte, segByteSize, segByteSize)
var fillByte = fillBits[7]
var tailSegLen = db.bCapByteSize(uint32(0), maxDstOff)
for i := uint32(0); i < tailSegLen-1; i++ {
tailSeg[i] = fillByte
}
tailSeg[tailSegLen-1] = fillBits[maxDstOff-(tailSegLen-1)<<3]
segments[maxDstSeq] = tailSeg
} else {
// ps : init segments by data corresponding to the 1st valid source key
it := db.bIterator(srckeys[srcIdx])
for ; it.Valid(); it.Next() {
if _, seq, err = db.bDecodeBinKey(it.RawKey()); err != nil {
// to do ...
it.Close()
return
}
segments[seq] = it.Value()
}
it.Close()
srcIdx++
}
// operation with following keys
var res []byte
for i := srcIdx; i < keyNum; i++ {
if srckeys[i] == nil {
continue
}
it := db.bIterator(srckeys[i])
for idx, end := uint32(0), false; !end; it.Next() {
end = !it.Valid()
if !end {
if _, seq, err = db.bDecodeBinKey(it.RawKey()); err != nil {
// to do ...
it.Close()
return
}
} else {
seq = maxDstSeq + 1
}
// todo :
// operation 'and' can be optimize here :
// if seq > max_segments_idx, this loop can be break,
// which can avoid cost from Key() and bDecodeBinKey()
for ; idx < seq; idx++ {
res = nil
exeOp(segments[idx], nil, &res)
segments[idx] = res
}
if !end {
res = it.Value()
exeOp(segments[seq], res, &res)
segments[seq] = res
idx++
}
}
it.Close()
}
// clear the old data in case
db.bDelete(t, dstkey)
db.rmExpire(t, BitType, dstkey)
// set data
db.bSetMeta(t, dstkey, maxDstSeq, maxDstOff)
var bk []byte
for seq, segt := range segments {
if segt != nil {
bk = db.bEncodeBinKey(dstkey, uint32(seq))
t.Put(bk, segt)
}
}
err = t.Commit()
if err == nil {
// blen = int32(db.bCapByteSize(maxDstOff, maxDstOff))
blen = int32(maxDstSeq<<segBitWidth | maxDstOff + 1)
}
return
}
func (db *DB) BExpire(key []byte, duration int64) (int64, error) {
if duration <= 0 {
return 0, errExpireValue
}
if err := checkKeySize(key); err != nil {
return -1, err
}
return db.bExpireAt(key, time.Now().Unix()+duration)
}
func (db *DB) BExpireAt(key []byte, when int64) (int64, error) {
if when <= time.Now().Unix() {
return 0, errExpireValue
}
if err := checkKeySize(key); err != nil {
return -1, err
}
return db.bExpireAt(key, when)
}
func (db *DB) BTTL(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return -1, err
}
return db.ttl(BitType, key)
}
func (db *DB) BPersist(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
}
t := db.binBatch
t.Lock()
defer t.Unlock()
n, err := db.rmExpire(t, BitType, key)
if err != nil {
return 0, err
}
err = t.Commit()
return n, err
}
func (db *DB) BScan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.scan(BitMetaType, key, count, inclusive, match)
}
func (db *DB) bFlush() (drop int64, err error) {
t := db.binBatch
t.Lock()
defer t.Unlock()
return db.flushType(t, BitType)
}

509
vendor/github.com/lunny/nodb/t_hash.go generated vendored Normal file
View file

@ -0,0 +1,509 @@
package nodb
import (
"encoding/binary"
"errors"
"time"
"github.com/lunny/nodb/store"
)
type FVPair struct {
Field []byte
Value []byte
}
var errHashKey = errors.New("invalid hash key")
var errHSizeKey = errors.New("invalid hsize key")
const (
hashStartSep byte = ':'
hashStopSep byte = hashStartSep + 1
)
func checkHashKFSize(key []byte, field []byte) error {
if len(key) > MaxKeySize || len(key) == 0 {
return errKeySize
} else if len(field) > MaxHashFieldSize || len(field) == 0 {
return errHashFieldSize
}
return nil
}
func (db *DB) hEncodeSizeKey(key []byte) []byte {
buf := make([]byte, len(key)+2)
buf[0] = db.index
buf[1] = HSizeType
copy(buf[2:], key)
return buf
}
func (db *DB) hDecodeSizeKey(ek []byte) ([]byte, error) {
if len(ek) < 2 || ek[0] != db.index || ek[1] != HSizeType {
return nil, errHSizeKey
}
return ek[2:], nil
}
func (db *DB) hEncodeHashKey(key []byte, field []byte) []byte {
buf := make([]byte, len(key)+len(field)+1+1+2+1)
pos := 0
buf[pos] = db.index
pos++
buf[pos] = HashType
pos++
binary.BigEndian.PutUint16(buf[pos:], uint16(len(key)))
pos += 2
copy(buf[pos:], key)
pos += len(key)
buf[pos] = hashStartSep
pos++
copy(buf[pos:], field)
return buf
}
func (db *DB) hDecodeHashKey(ek []byte) ([]byte, []byte, error) {
if len(ek) < 5 || ek[0] != db.index || ek[1] != HashType {
return nil, nil, errHashKey
}
pos := 2
keyLen := int(binary.BigEndian.Uint16(ek[pos:]))
pos += 2
if keyLen+5 > len(ek) {
return nil, nil, errHashKey
}
key := ek[pos : pos+keyLen]
pos += keyLen
if ek[pos] != hashStartSep {
return nil, nil, errHashKey
}
pos++
field := ek[pos:]
return key, field, nil
}
func (db *DB) hEncodeStartKey(key []byte) []byte {
return db.hEncodeHashKey(key, nil)
}
func (db *DB) hEncodeStopKey(key []byte) []byte {
k := db.hEncodeHashKey(key, nil)
k[len(k)-1] = hashStopSep
return k
}
func (db *DB) hSetItem(key []byte, field []byte, value []byte) (int64, error) {
t := db.hashBatch
ek := db.hEncodeHashKey(key, field)
var n int64 = 1
if v, _ := db.bucket.Get(ek); v != nil {
n = 0
} else {
if _, err := db.hIncrSize(key, 1); err != nil {
return 0, err
}
}
t.Put(ek, value)
return n, nil
}
// ps : here just focus on deleting the hash data,
// any other likes expire is ignore.
func (db *DB) hDelete(t *batch, key []byte) int64 {
sk := db.hEncodeSizeKey(key)
start := db.hEncodeStartKey(key)
stop := db.hEncodeStopKey(key)
var num int64 = 0
it := db.bucket.RangeLimitIterator(start, stop, store.RangeROpen, 0, -1)
for ; it.Valid(); it.Next() {
t.Delete(it.Key())
num++
}
it.Close()
t.Delete(sk)
return num
}
func (db *DB) hExpireAt(key []byte, when int64) (int64, error) {
t := db.hashBatch
t.Lock()
defer t.Unlock()
if hlen, err := db.HLen(key); err != nil || hlen == 0 {
return 0, err
} else {
db.expireAt(t, HashType, key, when)
if err := t.Commit(); err != nil {
return 0, err
}
}
return 1, nil
}
func (db *DB) HLen(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
}
return Int64(db.bucket.Get(db.hEncodeSizeKey(key)))
}
func (db *DB) HSet(key []byte, field []byte, value []byte) (int64, error) {
if err := checkHashKFSize(key, field); err != nil {
return 0, err
} else if err := checkValueSize(value); err != nil {
return 0, err
}
t := db.hashBatch
t.Lock()
defer t.Unlock()
n, err := db.hSetItem(key, field, value)
if err != nil {
return 0, err
}
//todo add binlog
err = t.Commit()
return n, err
}
func (db *DB) HGet(key []byte, field []byte) ([]byte, error) {
if err := checkHashKFSize(key, field); err != nil {
return nil, err
}
return db.bucket.Get(db.hEncodeHashKey(key, field))
}
func (db *DB) HMset(key []byte, args ...FVPair) error {
t := db.hashBatch
t.Lock()
defer t.Unlock()
var err error
var ek []byte
var num int64 = 0
for i := 0; i < len(args); i++ {
if err := checkHashKFSize(key, args[i].Field); err != nil {
return err
} else if err := checkValueSize(args[i].Value); err != nil {
return err
}
ek = db.hEncodeHashKey(key, args[i].Field)
if v, err := db.bucket.Get(ek); err != nil {
return err
} else if v == nil {
num++
}
t.Put(ek, args[i].Value)
}
if _, err = db.hIncrSize(key, num); err != nil {
return err
}
//todo add binglog
err = t.Commit()
return err
}
func (db *DB) HMget(key []byte, args ...[]byte) ([][]byte, error) {
var ek []byte
it := db.bucket.NewIterator()
defer it.Close()
r := make([][]byte, len(args))
for i := 0; i < len(args); i++ {
if err := checkHashKFSize(key, args[i]); err != nil {
return nil, err
}
ek = db.hEncodeHashKey(key, args[i])
r[i] = it.Find(ek)
}
return r, nil
}
func (db *DB) HDel(key []byte, args ...[]byte) (int64, error) {
t := db.hashBatch
var ek []byte
var v []byte
var err error
t.Lock()
defer t.Unlock()
it := db.bucket.NewIterator()
defer it.Close()
var num int64 = 0
for i := 0; i < len(args); i++ {
if err := checkHashKFSize(key, args[i]); err != nil {
return 0, err
}
ek = db.hEncodeHashKey(key, args[i])
v = it.RawFind(ek)
if v == nil {
continue
} else {
num++
t.Delete(ek)
}
}
if _, err = db.hIncrSize(key, -num); err != nil {
return 0, err
}
err = t.Commit()
return num, err
}
func (db *DB) hIncrSize(key []byte, delta int64) (int64, error) {
t := db.hashBatch
sk := db.hEncodeSizeKey(key)
var err error
var size int64 = 0
if size, err = Int64(db.bucket.Get(sk)); err != nil {
return 0, err
} else {
size += delta
if size <= 0 {
size = 0
t.Delete(sk)
db.rmExpire(t, HashType, key)
} else {
t.Put(sk, PutInt64(size))
}
}
return size, nil
}
func (db *DB) HIncrBy(key []byte, field []byte, delta int64) (int64, error) {
if err := checkHashKFSize(key, field); err != nil {
return 0, err
}
t := db.hashBatch
var ek []byte
var err error
t.Lock()
defer t.Unlock()
ek = db.hEncodeHashKey(key, field)
var n int64 = 0
if n, err = StrInt64(db.bucket.Get(ek)); err != nil {
return 0, err
}
n += delta
_, err = db.hSetItem(key, field, StrPutInt64(n))
if err != nil {
return 0, err
}
err = t.Commit()
return n, err
}
func (db *DB) HGetAll(key []byte) ([]FVPair, error) {
if err := checkKeySize(key); err != nil {
return nil, err
}
start := db.hEncodeStartKey(key)
stop := db.hEncodeStopKey(key)
v := make([]FVPair, 0, 16)
it := db.bucket.RangeLimitIterator(start, stop, store.RangeROpen, 0, -1)
for ; it.Valid(); it.Next() {
_, f, err := db.hDecodeHashKey(it.Key())
if err != nil {
return nil, err
}
v = append(v, FVPair{Field: f, Value: it.Value()})
}
it.Close()
return v, nil
}
func (db *DB) HKeys(key []byte) ([][]byte, error) {
if err := checkKeySize(key); err != nil {
return nil, err
}
start := db.hEncodeStartKey(key)
stop := db.hEncodeStopKey(key)
v := make([][]byte, 0, 16)
it := db.bucket.RangeLimitIterator(start, stop, store.RangeROpen, 0, -1)
for ; it.Valid(); it.Next() {
_, f, err := db.hDecodeHashKey(it.Key())
if err != nil {
return nil, err
}
v = append(v, f)
}
it.Close()
return v, nil
}
func (db *DB) HValues(key []byte) ([][]byte, error) {
if err := checkKeySize(key); err != nil {
return nil, err
}
start := db.hEncodeStartKey(key)
stop := db.hEncodeStopKey(key)
v := make([][]byte, 0, 16)
it := db.bucket.RangeLimitIterator(start, stop, store.RangeROpen, 0, -1)
for ; it.Valid(); it.Next() {
_, _, err := db.hDecodeHashKey(it.Key())
if err != nil {
return nil, err
}
v = append(v, it.Value())
}
it.Close()
return v, nil
}
func (db *DB) HClear(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
}
t := db.hashBatch
t.Lock()
defer t.Unlock()
num := db.hDelete(t, key)
db.rmExpire(t, HashType, key)
err := t.Commit()
return num, err
}
func (db *DB) HMclear(keys ...[]byte) (int64, error) {
t := db.hashBatch
t.Lock()
defer t.Unlock()
for _, key := range keys {
if err := checkKeySize(key); err != nil {
return 0, err
}
db.hDelete(t, key)
db.rmExpire(t, HashType, key)
}
err := t.Commit()
return int64(len(keys)), err
}
func (db *DB) hFlush() (drop int64, err error) {
t := db.hashBatch
t.Lock()
defer t.Unlock()
return db.flushType(t, HashType)
}
func (db *DB) HScan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.scan(HSizeType, key, count, inclusive, match)
}
func (db *DB) HExpire(key []byte, duration int64) (int64, error) {
if duration <= 0 {
return 0, errExpireValue
}
return db.hExpireAt(key, time.Now().Unix()+duration)
}
func (db *DB) HExpireAt(key []byte, when int64) (int64, error) {
if when <= time.Now().Unix() {
return 0, errExpireValue
}
return db.hExpireAt(key, when)
}
func (db *DB) HTTL(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return -1, err
}
return db.ttl(HashType, key)
}
func (db *DB) HPersist(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
}
t := db.hashBatch
t.Lock()
defer t.Unlock()
n, err := db.rmExpire(t, HashType, key)
if err != nil {
return 0, err
}
err = t.Commit()
return n, err
}

387
vendor/github.com/lunny/nodb/t_kv.go generated vendored Normal file
View file

@ -0,0 +1,387 @@
package nodb
import (
"errors"
"time"
)
type KVPair struct {
Key []byte
Value []byte
}
var errKVKey = errors.New("invalid encode kv key")
func checkKeySize(key []byte) error {
if len(key) > MaxKeySize || len(key) == 0 {
return errKeySize
}
return nil
}
func checkValueSize(value []byte) error {
if len(value) > MaxValueSize {
return errValueSize
}
return nil
}
func (db *DB) encodeKVKey(key []byte) []byte {
ek := make([]byte, len(key)+2)
ek[0] = db.index
ek[1] = KVType
copy(ek[2:], key)
return ek
}
func (db *DB) decodeKVKey(ek []byte) ([]byte, error) {
if len(ek) < 2 || ek[0] != db.index || ek[1] != KVType {
return nil, errKVKey
}
return ek[2:], nil
}
func (db *DB) encodeKVMinKey() []byte {
ek := db.encodeKVKey(nil)
return ek
}
func (db *DB) encodeKVMaxKey() []byte {
ek := db.encodeKVKey(nil)
ek[len(ek)-1] = KVType + 1
return ek
}
func (db *DB) incr(key []byte, delta int64) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
}
var err error
key = db.encodeKVKey(key)
t := db.kvBatch
t.Lock()
defer t.Unlock()
var n int64
n, err = StrInt64(db.bucket.Get(key))
if err != nil {
return 0, err
}
n += delta
t.Put(key, StrPutInt64(n))
//todo binlog
err = t.Commit()
return n, err
}
// ps : here just focus on deleting the key-value data,
// any other likes expire is ignore.
func (db *DB) delete(t *batch, key []byte) int64 {
key = db.encodeKVKey(key)
t.Delete(key)
return 1
}
func (db *DB) setExpireAt(key []byte, when int64) (int64, error) {
t := db.kvBatch
t.Lock()
defer t.Unlock()
if exist, err := db.Exists(key); err != nil || exist == 0 {
return 0, err
} else {
db.expireAt(t, KVType, key, when)
if err := t.Commit(); err != nil {
return 0, err
}
}
return 1, nil
}
func (db *DB) Decr(key []byte) (int64, error) {
return db.incr(key, -1)
}
func (db *DB) DecrBy(key []byte, decrement int64) (int64, error) {
return db.incr(key, -decrement)
}
func (db *DB) Del(keys ...[]byte) (int64, error) {
if len(keys) == 0 {
return 0, nil
}
codedKeys := make([][]byte, len(keys))
for i, k := range keys {
codedKeys[i] = db.encodeKVKey(k)
}
t := db.kvBatch
t.Lock()
defer t.Unlock()
for i, k := range keys {
t.Delete(codedKeys[i])
db.rmExpire(t, KVType, k)
}
err := t.Commit()
return int64(len(keys)), err
}
func (db *DB) Exists(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
}
var err error
key = db.encodeKVKey(key)
var v []byte
v, err = db.bucket.Get(key)
if v != nil && err == nil {
return 1, nil
}
return 0, err
}
func (db *DB) Get(key []byte) ([]byte, error) {
if err := checkKeySize(key); err != nil {
return nil, err
}
key = db.encodeKVKey(key)
return db.bucket.Get(key)
}
func (db *DB) GetSet(key []byte, value []byte) ([]byte, error) {
if err := checkKeySize(key); err != nil {
return nil, err
} else if err := checkValueSize(value); err != nil {
return nil, err
}
key = db.encodeKVKey(key)
t := db.kvBatch
t.Lock()
defer t.Unlock()
oldValue, err := db.bucket.Get(key)
if err != nil {
return nil, err
}
t.Put(key, value)
//todo, binlog
err = t.Commit()
return oldValue, err
}
func (db *DB) Incr(key []byte) (int64, error) {
return db.incr(key, 1)
}
func (db *DB) IncrBy(key []byte, increment int64) (int64, error) {
return db.incr(key, increment)
}
func (db *DB) MGet(keys ...[]byte) ([][]byte, error) {
values := make([][]byte, len(keys))
it := db.bucket.NewIterator()
defer it.Close()
for i := range keys {
if err := checkKeySize(keys[i]); err != nil {
return nil, err
}
values[i] = it.Find(db.encodeKVKey(keys[i]))
}
return values, nil
}
func (db *DB) MSet(args ...KVPair) error {
if len(args) == 0 {
return nil
}
t := db.kvBatch
var err error
var key []byte
var value []byte
t.Lock()
defer t.Unlock()
for i := 0; i < len(args); i++ {
if err := checkKeySize(args[i].Key); err != nil {
return err
} else if err := checkValueSize(args[i].Value); err != nil {
return err
}
key = db.encodeKVKey(args[i].Key)
value = args[i].Value
t.Put(key, value)
//todo binlog
}
err = t.Commit()
return err
}
func (db *DB) Set(key []byte, value []byte) error {
if err := checkKeySize(key); err != nil {
return err
} else if err := checkValueSize(value); err != nil {
return err
}
var err error
key = db.encodeKVKey(key)
t := db.kvBatch
t.Lock()
defer t.Unlock()
t.Put(key, value)
err = t.Commit()
return err
}
func (db *DB) SetNX(key []byte, value []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
} else if err := checkValueSize(value); err != nil {
return 0, err
}
var err error
key = db.encodeKVKey(key)
var n int64 = 1
t := db.kvBatch
t.Lock()
defer t.Unlock()
if v, err := db.bucket.Get(key); err != nil {
return 0, err
} else if v != nil {
n = 0
} else {
t.Put(key, value)
//todo binlog
err = t.Commit()
}
return n, err
}
func (db *DB) flush() (drop int64, err error) {
t := db.kvBatch
t.Lock()
defer t.Unlock()
return db.flushType(t, KVType)
}
//if inclusive is true, scan range [key, inf) else (key, inf)
func (db *DB) Scan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.scan(KVType, key, count, inclusive, match)
}
func (db *DB) Expire(key []byte, duration int64) (int64, error) {
if duration <= 0 {
return 0, errExpireValue
}
return db.setExpireAt(key, time.Now().Unix()+duration)
}
func (db *DB) ExpireAt(key []byte, when int64) (int64, error) {
if when <= time.Now().Unix() {
return 0, errExpireValue
}
return db.setExpireAt(key, when)
}
func (db *DB) TTL(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return -1, err
}
return db.ttl(KVType, key)
}
func (db *DB) Persist(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
}
t := db.kvBatch
t.Lock()
defer t.Unlock()
n, err := db.rmExpire(t, KVType, key)
if err != nil {
return 0, err
}
err = t.Commit()
return n, err
}
func (db *DB) Lock() {
t := db.kvBatch
t.Lock()
}
func (db *DB) Remove(key []byte) bool {
if len(key) == 0 {
return false
}
t := db.kvBatch
t.Delete(db.encodeKVKey(key))
_, err := db.rmExpire(t, KVType, key)
if err != nil {
return false
}
return true
}
func (db *DB) Commit() error {
t := db.kvBatch
return t.Commit()
}
func (db *DB) Unlock() {
t := db.kvBatch
t.Unlock()
}

492
vendor/github.com/lunny/nodb/t_list.go generated vendored Normal file
View file

@ -0,0 +1,492 @@
package nodb
import (
"encoding/binary"
"errors"
"time"
"github.com/lunny/nodb/store"
)
const (
listHeadSeq int32 = 1
listTailSeq int32 = 2
listMinSeq int32 = 1000
listMaxSeq int32 = 1<<31 - 1000
listInitialSeq int32 = listMinSeq + (listMaxSeq-listMinSeq)/2
)
var errLMetaKey = errors.New("invalid lmeta key")
var errListKey = errors.New("invalid list key")
var errListSeq = errors.New("invalid list sequence, overflow")
func (db *DB) lEncodeMetaKey(key []byte) []byte {
buf := make([]byte, len(key)+2)
buf[0] = db.index
buf[1] = LMetaType
copy(buf[2:], key)
return buf
}
func (db *DB) lDecodeMetaKey(ek []byte) ([]byte, error) {
if len(ek) < 2 || ek[0] != db.index || ek[1] != LMetaType {
return nil, errLMetaKey
}
return ek[2:], nil
}
func (db *DB) lEncodeListKey(key []byte, seq int32) []byte {
buf := make([]byte, len(key)+8)
pos := 0
buf[pos] = db.index
pos++
buf[pos] = ListType
pos++
binary.BigEndian.PutUint16(buf[pos:], uint16(len(key)))
pos += 2
copy(buf[pos:], key)
pos += len(key)
binary.BigEndian.PutUint32(buf[pos:], uint32(seq))
return buf
}
func (db *DB) lDecodeListKey(ek []byte) (key []byte, seq int32, err error) {
if len(ek) < 8 || ek[0] != db.index || ek[1] != ListType {
err = errListKey
return
}
keyLen := int(binary.BigEndian.Uint16(ek[2:]))
if keyLen+8 != len(ek) {
err = errListKey
return
}
key = ek[4 : 4+keyLen]
seq = int32(binary.BigEndian.Uint32(ek[4+keyLen:]))
return
}
func (db *DB) lpush(key []byte, whereSeq int32, args ...[]byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
}
var headSeq int32
var tailSeq int32
var size int32
var err error
t := db.listBatch
t.Lock()
defer t.Unlock()
metaKey := db.lEncodeMetaKey(key)
headSeq, tailSeq, size, err = db.lGetMeta(nil, metaKey)
if err != nil {
return 0, err
}
var pushCnt int = len(args)
if pushCnt == 0 {
return int64(size), nil
}
var seq int32 = headSeq
var delta int32 = -1
if whereSeq == listTailSeq {
seq = tailSeq
delta = 1
}
// append elements
if size > 0 {
seq += delta
}
for i := 0; i < pushCnt; i++ {
ek := db.lEncodeListKey(key, seq+int32(i)*delta)
t.Put(ek, args[i])
}
seq += int32(pushCnt-1) * delta
if seq <= listMinSeq || seq >= listMaxSeq {
return 0, errListSeq
}
// set meta info
if whereSeq == listHeadSeq {
headSeq = seq
} else {
tailSeq = seq
}
db.lSetMeta(metaKey, headSeq, tailSeq)
err = t.Commit()
return int64(size) + int64(pushCnt), err
}
func (db *DB) lpop(key []byte, whereSeq int32) ([]byte, error) {
if err := checkKeySize(key); err != nil {
return nil, err
}
t := db.listBatch
t.Lock()
defer t.Unlock()
var headSeq int32
var tailSeq int32
var err error
metaKey := db.lEncodeMetaKey(key)
headSeq, tailSeq, _, err = db.lGetMeta(nil, metaKey)
if err != nil {
return nil, err
}
var value []byte
var seq int32 = headSeq
if whereSeq == listTailSeq {
seq = tailSeq
}
itemKey := db.lEncodeListKey(key, seq)
value, err = db.bucket.Get(itemKey)
if err != nil {
return nil, err
}
if whereSeq == listHeadSeq {
headSeq += 1
} else {
tailSeq -= 1
}
t.Delete(itemKey)
size := db.lSetMeta(metaKey, headSeq, tailSeq)
if size == 0 {
db.rmExpire(t, HashType, key)
}
err = t.Commit()
return value, err
}
// ps : here just focus on deleting the list data,
// any other likes expire is ignore.
func (db *DB) lDelete(t *batch, key []byte) int64 {
mk := db.lEncodeMetaKey(key)
var headSeq int32
var tailSeq int32
var err error
it := db.bucket.NewIterator()
defer it.Close()
headSeq, tailSeq, _, err = db.lGetMeta(it, mk)
if err != nil {
return 0
}
var num int64 = 0
startKey := db.lEncodeListKey(key, headSeq)
stopKey := db.lEncodeListKey(key, tailSeq)
rit := store.NewRangeIterator(it, &store.Range{startKey, stopKey, store.RangeClose})
for ; rit.Valid(); rit.Next() {
t.Delete(rit.RawKey())
num++
}
t.Delete(mk)
return num
}
func (db *DB) lGetMeta(it *store.Iterator, ek []byte) (headSeq int32, tailSeq int32, size int32, err error) {
var v []byte
if it != nil {
v = it.Find(ek)
} else {
v, err = db.bucket.Get(ek)
}
if err != nil {
return
} else if v == nil {
headSeq = listInitialSeq
tailSeq = listInitialSeq
size = 0
return
} else {
headSeq = int32(binary.LittleEndian.Uint32(v[0:4]))
tailSeq = int32(binary.LittleEndian.Uint32(v[4:8]))
size = tailSeq - headSeq + 1
}
return
}
func (db *DB) lSetMeta(ek []byte, headSeq int32, tailSeq int32) int32 {
t := db.listBatch
var size int32 = tailSeq - headSeq + 1
if size < 0 {
// todo : log error + panic
} else if size == 0 {
t.Delete(ek)
} else {
buf := make([]byte, 8)
binary.LittleEndian.PutUint32(buf[0:4], uint32(headSeq))
binary.LittleEndian.PutUint32(buf[4:8], uint32(tailSeq))
t.Put(ek, buf)
}
return size
}
func (db *DB) lExpireAt(key []byte, when int64) (int64, error) {
t := db.listBatch
t.Lock()
defer t.Unlock()
if llen, err := db.LLen(key); err != nil || llen == 0 {
return 0, err
} else {
db.expireAt(t, ListType, key, when)
if err := t.Commit(); err != nil {
return 0, err
}
}
return 1, nil
}
func (db *DB) LIndex(key []byte, index int32) ([]byte, error) {
if err := checkKeySize(key); err != nil {
return nil, err
}
var seq int32
var headSeq int32
var tailSeq int32
var err error
metaKey := db.lEncodeMetaKey(key)
it := db.bucket.NewIterator()
defer it.Close()
headSeq, tailSeq, _, err = db.lGetMeta(it, metaKey)
if err != nil {
return nil, err
}
if index >= 0 {
seq = headSeq + index
} else {
seq = tailSeq + index + 1
}
sk := db.lEncodeListKey(key, seq)
v := it.Find(sk)
return v, nil
}
func (db *DB) LLen(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
}
ek := db.lEncodeMetaKey(key)
_, _, size, err := db.lGetMeta(nil, ek)
return int64(size), err
}
func (db *DB) LPop(key []byte) ([]byte, error) {
return db.lpop(key, listHeadSeq)
}
func (db *DB) LPush(key []byte, arg1 []byte, args ...[]byte) (int64, error) {
var argss = [][]byte{arg1}
argss = append(argss, args...)
return db.lpush(key, listHeadSeq, argss...)
}
func (db *DB) LRange(key []byte, start int32, stop int32) ([][]byte, error) {
if err := checkKeySize(key); err != nil {
return nil, err
}
var headSeq int32
var llen int32
var err error
metaKey := db.lEncodeMetaKey(key)
it := db.bucket.NewIterator()
defer it.Close()
if headSeq, _, llen, err = db.lGetMeta(it, metaKey); err != nil {
return nil, err
}
if start < 0 {
start = llen + start
}
if stop < 0 {
stop = llen + stop
}
if start < 0 {
start = 0
}
if start > stop || start >= llen {
return [][]byte{}, nil
}
if stop >= llen {
stop = llen - 1
}
limit := (stop - start) + 1
headSeq += start
v := make([][]byte, 0, limit)
startKey := db.lEncodeListKey(key, headSeq)
rit := store.NewRangeLimitIterator(it,
&store.Range{
Min: startKey,
Max: nil,
Type: store.RangeClose},
&store.Limit{
Offset: 0,
Count: int(limit)})
for ; rit.Valid(); rit.Next() {
v = append(v, rit.Value())
}
return v, nil
}
func (db *DB) RPop(key []byte) ([]byte, error) {
return db.lpop(key, listTailSeq)
}
func (db *DB) RPush(key []byte, arg1 []byte, args ...[]byte) (int64, error) {
var argss = [][]byte{arg1}
argss = append(argss, args...)
return db.lpush(key, listTailSeq, argss...)
}
func (db *DB) LClear(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
}
t := db.listBatch
t.Lock()
defer t.Unlock()
num := db.lDelete(t, key)
db.rmExpire(t, ListType, key)
err := t.Commit()
return num, err
}
func (db *DB) LMclear(keys ...[]byte) (int64, error) {
t := db.listBatch
t.Lock()
defer t.Unlock()
for _, key := range keys {
if err := checkKeySize(key); err != nil {
return 0, err
}
db.lDelete(t, key)
db.rmExpire(t, ListType, key)
}
err := t.Commit()
return int64(len(keys)), err
}
func (db *DB) lFlush() (drop int64, err error) {
t := db.listBatch
t.Lock()
defer t.Unlock()
return db.flushType(t, ListType)
}
func (db *DB) LExpire(key []byte, duration int64) (int64, error) {
if duration <= 0 {
return 0, errExpireValue
}
return db.lExpireAt(key, time.Now().Unix()+duration)
}
func (db *DB) LExpireAt(key []byte, when int64) (int64, error) {
if when <= time.Now().Unix() {
return 0, errExpireValue
}
return db.lExpireAt(key, when)
}
func (db *DB) LTTL(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return -1, err
}
return db.ttl(ListType, key)
}
func (db *DB) LPersist(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
}
t := db.listBatch
t.Lock()
defer t.Unlock()
n, err := db.rmExpire(t, ListType, key)
if err != nil {
return 0, err
}
err = t.Commit()
return n, err
}
func (db *DB) LScan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.scan(LMetaType, key, count, inclusive, match)
}
func (db *DB) lEncodeMinKey() []byte {
return db.lEncodeMetaKey(nil)
}
func (db *DB) lEncodeMaxKey() []byte {
ek := db.lEncodeMetaKey(nil)
ek[len(ek)-1] = LMetaType + 1
return ek
}

601
vendor/github.com/lunny/nodb/t_set.go generated vendored Normal file
View file

@ -0,0 +1,601 @@
package nodb
import (
"encoding/binary"
"errors"
"time"
"github.com/lunny/nodb/store"
)
var errSetKey = errors.New("invalid set key")
var errSSizeKey = errors.New("invalid ssize key")
const (
setStartSep byte = ':'
setStopSep byte = setStartSep + 1
UnionType byte = 51
DiffType byte = 52
InterType byte = 53
)
func checkSetKMSize(key []byte, member []byte) error {
if len(key) > MaxKeySize || len(key) == 0 {
return errKeySize
} else if len(member) > MaxSetMemberSize || len(member) == 0 {
return errSetMemberSize
}
return nil
}
func (db *DB) sEncodeSizeKey(key []byte) []byte {
buf := make([]byte, len(key)+2)
buf[0] = db.index
buf[1] = SSizeType
copy(buf[2:], key)
return buf
}
func (db *DB) sDecodeSizeKey(ek []byte) ([]byte, error) {
if len(ek) < 2 || ek[0] != db.index || ek[1] != SSizeType {
return nil, errSSizeKey
}
return ek[2:], nil
}
func (db *DB) sEncodeSetKey(key []byte, member []byte) []byte {
buf := make([]byte, len(key)+len(member)+1+1+2+1)
pos := 0
buf[pos] = db.index
pos++
buf[pos] = SetType
pos++
binary.BigEndian.PutUint16(buf[pos:], uint16(len(key)))
pos += 2
copy(buf[pos:], key)
pos += len(key)
buf[pos] = setStartSep
pos++
copy(buf[pos:], member)
return buf
}
func (db *DB) sDecodeSetKey(ek []byte) ([]byte, []byte, error) {
if len(ek) < 5 || ek[0] != db.index || ek[1] != SetType {
return nil, nil, errSetKey
}
pos := 2
keyLen := int(binary.BigEndian.Uint16(ek[pos:]))
pos += 2
if keyLen+5 > len(ek) {
return nil, nil, errSetKey
}
key := ek[pos : pos+keyLen]
pos += keyLen
if ek[pos] != hashStartSep {
return nil, nil, errSetKey
}
pos++
member := ek[pos:]
return key, member, nil
}
func (db *DB) sEncodeStartKey(key []byte) []byte {
return db.sEncodeSetKey(key, nil)
}
func (db *DB) sEncodeStopKey(key []byte) []byte {
k := db.sEncodeSetKey(key, nil)
k[len(k)-1] = setStopSep
return k
}
func (db *DB) sFlush() (drop int64, err error) {
t := db.setBatch
t.Lock()
defer t.Unlock()
return db.flushType(t, SetType)
}
func (db *DB) sDelete(t *batch, key []byte) int64 {
sk := db.sEncodeSizeKey(key)
start := db.sEncodeStartKey(key)
stop := db.sEncodeStopKey(key)
var num int64 = 0
it := db.bucket.RangeLimitIterator(start, stop, store.RangeROpen, 0, -1)
for ; it.Valid(); it.Next() {
t.Delete(it.RawKey())
num++
}
it.Close()
t.Delete(sk)
return num
}
func (db *DB) sIncrSize(key []byte, delta int64) (int64, error) {
t := db.setBatch
sk := db.sEncodeSizeKey(key)
var err error
var size int64 = 0
if size, err = Int64(db.bucket.Get(sk)); err != nil {
return 0, err
} else {
size += delta
if size <= 0 {
size = 0
t.Delete(sk)
db.rmExpire(t, SetType, key)
} else {
t.Put(sk, PutInt64(size))
}
}
return size, nil
}
func (db *DB) sExpireAt(key []byte, when int64) (int64, error) {
t := db.setBatch
t.Lock()
defer t.Unlock()
if scnt, err := db.SCard(key); err != nil || scnt == 0 {
return 0, err
} else {
db.expireAt(t, SetType, key, when)
if err := t.Commit(); err != nil {
return 0, err
}
}
return 1, nil
}
func (db *DB) sSetItem(key []byte, member []byte) (int64, error) {
t := db.setBatch
ek := db.sEncodeSetKey(key, member)
var n int64 = 1
if v, _ := db.bucket.Get(ek); v != nil {
n = 0
} else {
if _, err := db.sIncrSize(key, 1); err != nil {
return 0, err
}
}
t.Put(ek, nil)
return n, nil
}
func (db *DB) SAdd(key []byte, args ...[]byte) (int64, error) {
t := db.setBatch
t.Lock()
defer t.Unlock()
var err error
var ek []byte
var num int64 = 0
for i := 0; i < len(args); i++ {
if err := checkSetKMSize(key, args[i]); err != nil {
return 0, err
}
ek = db.sEncodeSetKey(key, args[i])
if v, err := db.bucket.Get(ek); err != nil {
return 0, err
} else if v == nil {
num++
}
t.Put(ek, nil)
}
if _, err = db.sIncrSize(key, num); err != nil {
return 0, err
}
err = t.Commit()
return num, err
}
func (db *DB) SCard(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
}
sk := db.sEncodeSizeKey(key)
return Int64(db.bucket.Get(sk))
}
func (db *DB) sDiffGeneric(keys ...[]byte) ([][]byte, error) {
destMap := make(map[string]bool)
members, err := db.SMembers(keys[0])
if err != nil {
return nil, err
}
for _, m := range members {
destMap[String(m)] = true
}
for _, k := range keys[1:] {
members, err := db.SMembers(k)
if err != nil {
return nil, err
}
for _, m := range members {
if _, ok := destMap[String(m)]; !ok {
continue
} else if ok {
delete(destMap, String(m))
}
}
// O - A = O, O is zero set.
if len(destMap) == 0 {
return nil, nil
}
}
slice := make([][]byte, len(destMap))
idx := 0
for k, v := range destMap {
if !v {
continue
}
slice[idx] = []byte(k)
idx++
}
return slice, nil
}
func (db *DB) SDiff(keys ...[]byte) ([][]byte, error) {
v, err := db.sDiffGeneric(keys...)
return v, err
}
func (db *DB) SDiffStore(dstKey []byte, keys ...[]byte) (int64, error) {
n, err := db.sStoreGeneric(dstKey, DiffType, keys...)
return n, err
}
func (db *DB) sInterGeneric(keys ...[]byte) ([][]byte, error) {
destMap := make(map[string]bool)
members, err := db.SMembers(keys[0])
if err != nil {
return nil, err
}
for _, m := range members {
destMap[String(m)] = true
}
for _, key := range keys[1:] {
if err := checkKeySize(key); err != nil {
return nil, err
}
members, err := db.SMembers(key)
if err != nil {
return nil, err
} else if len(members) == 0 {
return nil, err
}
tempMap := make(map[string]bool)
for _, member := range members {
if err := checkKeySize(member); err != nil {
return nil, err
}
if _, ok := destMap[String(member)]; ok {
tempMap[String(member)] = true //mark this item as selected
}
}
destMap = tempMap //reduce the size of the result set
if len(destMap) == 0 {
return nil, nil
}
}
slice := make([][]byte, len(destMap))
idx := 0
for k, v := range destMap {
if !v {
continue
}
slice[idx] = []byte(k)
idx++
}
return slice, nil
}
func (db *DB) SInter(keys ...[]byte) ([][]byte, error) {
v, err := db.sInterGeneric(keys...)
return v, err
}
func (db *DB) SInterStore(dstKey []byte, keys ...[]byte) (int64, error) {
n, err := db.sStoreGeneric(dstKey, InterType, keys...)
return n, err
}
func (db *DB) SIsMember(key []byte, member []byte) (int64, error) {
ek := db.sEncodeSetKey(key, member)
var n int64 = 1
if v, err := db.bucket.Get(ek); err != nil {
return 0, err
} else if v == nil {
n = 0
}
return n, nil
}
func (db *DB) SMembers(key []byte) ([][]byte, error) {
if err := checkKeySize(key); err != nil {
return nil, err
}
start := db.sEncodeStartKey(key)
stop := db.sEncodeStopKey(key)
v := make([][]byte, 0, 16)
it := db.bucket.RangeLimitIterator(start, stop, store.RangeROpen, 0, -1)
for ; it.Valid(); it.Next() {
_, m, err := db.sDecodeSetKey(it.Key())
if err != nil {
return nil, err
}
v = append(v, m)
}
it.Close()
return v, nil
}
func (db *DB) SRem(key []byte, args ...[]byte) (int64, error) {
t := db.setBatch
t.Lock()
defer t.Unlock()
var ek []byte
var v []byte
var err error
it := db.bucket.NewIterator()
defer it.Close()
var num int64 = 0
for i := 0; i < len(args); i++ {
if err := checkSetKMSize(key, args[i]); err != nil {
return 0, err
}
ek = db.sEncodeSetKey(key, args[i])
v = it.RawFind(ek)
if v == nil {
continue
} else {
num++
t.Delete(ek)
}
}
if _, err = db.sIncrSize(key, -num); err != nil {
return 0, err
}
err = t.Commit()
return num, err
}
func (db *DB) sUnionGeneric(keys ...[]byte) ([][]byte, error) {
dstMap := make(map[string]bool)
for _, key := range keys {
if err := checkKeySize(key); err != nil {
return nil, err
}
members, err := db.SMembers(key)
if err != nil {
return nil, err
}
for _, member := range members {
dstMap[String(member)] = true
}
}
slice := make([][]byte, len(dstMap))
idx := 0
for k, v := range dstMap {
if !v {
continue
}
slice[idx] = []byte(k)
idx++
}
return slice, nil
}
func (db *DB) SUnion(keys ...[]byte) ([][]byte, error) {
v, err := db.sUnionGeneric(keys...)
return v, err
}
func (db *DB) SUnionStore(dstKey []byte, keys ...[]byte) (int64, error) {
n, err := db.sStoreGeneric(dstKey, UnionType, keys...)
return n, err
}
func (db *DB) sStoreGeneric(dstKey []byte, optType byte, keys ...[]byte) (int64, error) {
if err := checkKeySize(dstKey); err != nil {
return 0, err
}
t := db.setBatch
t.Lock()
defer t.Unlock()
db.sDelete(t, dstKey)
var err error
var ek []byte
var v [][]byte
switch optType {
case UnionType:
v, err = db.sUnionGeneric(keys...)
case DiffType:
v, err = db.sDiffGeneric(keys...)
case InterType:
v, err = db.sInterGeneric(keys...)
}
if err != nil {
return 0, err
}
for _, m := range v {
if err := checkSetKMSize(dstKey, m); err != nil {
return 0, err
}
ek = db.sEncodeSetKey(dstKey, m)
if _, err := db.bucket.Get(ek); err != nil {
return 0, err
}
t.Put(ek, nil)
}
var num = int64(len(v))
sk := db.sEncodeSizeKey(dstKey)
t.Put(sk, PutInt64(num))
if err = t.Commit(); err != nil {
return 0, err
}
return num, nil
}
func (db *DB) SClear(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
}
t := db.setBatch
t.Lock()
defer t.Unlock()
num := db.sDelete(t, key)
db.rmExpire(t, SetType, key)
err := t.Commit()
return num, err
}
func (db *DB) SMclear(keys ...[]byte) (int64, error) {
t := db.setBatch
t.Lock()
defer t.Unlock()
for _, key := range keys {
if err := checkKeySize(key); err != nil {
return 0, err
}
db.sDelete(t, key)
db.rmExpire(t, SetType, key)
}
err := t.Commit()
return int64(len(keys)), err
}
func (db *DB) SExpire(key []byte, duration int64) (int64, error) {
if duration <= 0 {
return 0, errExpireValue
}
return db.sExpireAt(key, time.Now().Unix()+duration)
}
func (db *DB) SExpireAt(key []byte, when int64) (int64, error) {
if when <= time.Now().Unix() {
return 0, errExpireValue
}
return db.sExpireAt(key, when)
}
func (db *DB) STTL(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return -1, err
}
return db.ttl(SetType, key)
}
func (db *DB) SPersist(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
}
t := db.setBatch
t.Lock()
defer t.Unlock()
n, err := db.rmExpire(t, SetType, key)
if err != nil {
return 0, err
}
err = t.Commit()
return n, err
}
func (db *DB) SScan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.scan(SSizeType, key, count, inclusive, match)
}

195
vendor/github.com/lunny/nodb/t_ttl.go generated vendored Normal file
View file

@ -0,0 +1,195 @@
package nodb
import (
"encoding/binary"
"errors"
"time"
"github.com/lunny/nodb/store"
)
var (
errExpMetaKey = errors.New("invalid expire meta key")
errExpTimeKey = errors.New("invalid expire time key")
)
type retireCallback func(*batch, []byte) int64
type elimination struct {
db *DB
exp2Tx []*batch
exp2Retire []retireCallback
}
var errExpType = errors.New("invalid expire type")
func (db *DB) expEncodeTimeKey(dataType byte, key []byte, when int64) []byte {
buf := make([]byte, len(key)+11)
buf[0] = db.index
buf[1] = ExpTimeType
buf[2] = dataType
pos := 3
binary.BigEndian.PutUint64(buf[pos:], uint64(when))
pos += 8
copy(buf[pos:], key)
return buf
}
func (db *DB) expEncodeMetaKey(dataType byte, key []byte) []byte {
buf := make([]byte, len(key)+3)
buf[0] = db.index
buf[1] = ExpMetaType
buf[2] = dataType
pos := 3
copy(buf[pos:], key)
return buf
}
func (db *DB) expDecodeMetaKey(mk []byte) (byte, []byte, error) {
if len(mk) <= 3 || mk[0] != db.index || mk[1] != ExpMetaType {
return 0, nil, errExpMetaKey
}
return mk[2], mk[3:], nil
}
func (db *DB) expDecodeTimeKey(tk []byte) (byte, []byte, int64, error) {
if len(tk) < 11 || tk[0] != db.index || tk[1] != ExpTimeType {
return 0, nil, 0, errExpTimeKey
}
return tk[2], tk[11:], int64(binary.BigEndian.Uint64(tk[3:])), nil
}
func (db *DB) expire(t *batch, dataType byte, key []byte, duration int64) {
db.expireAt(t, dataType, key, time.Now().Unix()+duration)
}
func (db *DB) expireAt(t *batch, dataType byte, key []byte, when int64) {
mk := db.expEncodeMetaKey(dataType, key)
tk := db.expEncodeTimeKey(dataType, key, when)
t.Put(tk, mk)
t.Put(mk, PutInt64(when))
}
func (db *DB) ttl(dataType byte, key []byte) (t int64, err error) {
mk := db.expEncodeMetaKey(dataType, key)
if t, err = Int64(db.bucket.Get(mk)); err != nil || t == 0 {
t = -1
} else {
t -= time.Now().Unix()
if t <= 0 {
t = -1
}
// if t == -1 : to remove ????
}
return t, err
}
func (db *DB) rmExpire(t *batch, dataType byte, key []byte) (int64, error) {
mk := db.expEncodeMetaKey(dataType, key)
if v, err := db.bucket.Get(mk); err != nil {
return 0, err
} else if v == nil {
return 0, nil
} else if when, err2 := Int64(v, nil); err2 != nil {
return 0, err2
} else {
tk := db.expEncodeTimeKey(dataType, key, when)
t.Delete(mk)
t.Delete(tk)
return 1, nil
}
}
func (db *DB) expFlush(t *batch, dataType byte) (err error) {
minKey := make([]byte, 3)
minKey[0] = db.index
minKey[1] = ExpTimeType
minKey[2] = dataType
maxKey := make([]byte, 3)
maxKey[0] = db.index
maxKey[1] = ExpMetaType
maxKey[2] = dataType + 1
_, err = db.flushRegion(t, minKey, maxKey)
err = t.Commit()
return
}
//////////////////////////////////////////////////////////
//
//////////////////////////////////////////////////////////
func newEliminator(db *DB) *elimination {
eli := new(elimination)
eli.db = db
eli.exp2Tx = make([]*batch, maxDataType)
eli.exp2Retire = make([]retireCallback, maxDataType)
return eli
}
func (eli *elimination) regRetireContext(dataType byte, t *batch, onRetire retireCallback) {
// todo .. need to ensure exist - mapExpMetaType[expType]
eli.exp2Tx[dataType] = t
eli.exp2Retire[dataType] = onRetire
}
// call by outside ... (from *db to another *db)
func (eli *elimination) active() {
now := time.Now().Unix()
db := eli.db
dbGet := db.bucket.Get
minKey := db.expEncodeTimeKey(NoneType, nil, 0)
maxKey := db.expEncodeTimeKey(maxDataType, nil, now)
it := db.bucket.RangeLimitIterator(minKey, maxKey, store.RangeROpen, 0, -1)
for ; it.Valid(); it.Next() {
tk := it.RawKey()
mk := it.RawValue()
dt, k, _, err := db.expDecodeTimeKey(tk)
if err != nil {
continue
}
t := eli.exp2Tx[dt]
onRetire := eli.exp2Retire[dt]
if tk == nil || onRetire == nil {
continue
}
t.Lock()
if exp, err := Int64(dbGet(mk)); err == nil {
// check expire again
if exp <= now {
onRetire(t, k)
t.Delete(tk)
t.Delete(mk)
t.Commit()
}
}
t.Unlock()
}
it.Close()
return
}

943
vendor/github.com/lunny/nodb/t_zset.go generated vendored Normal file
View file

@ -0,0 +1,943 @@
package nodb
import (
"bytes"
"encoding/binary"
"errors"
"time"
"github.com/lunny/nodb/store"
)
const (
MinScore int64 = -1<<63 + 1
MaxScore int64 = 1<<63 - 1
InvalidScore int64 = -1 << 63
AggregateSum byte = 0
AggregateMin byte = 1
AggregateMax byte = 2
)
type ScorePair struct {
Score int64
Member []byte
}
var errZSizeKey = errors.New("invalid zsize key")
var errZSetKey = errors.New("invalid zset key")
var errZScoreKey = errors.New("invalid zscore key")
var errScoreOverflow = errors.New("zset score overflow")
var errInvalidAggregate = errors.New("invalid aggregate")
var errInvalidWeightNum = errors.New("invalid weight number")
var errInvalidSrcKeyNum = errors.New("invalid src key number")
const (
zsetNScoreSep byte = '<'
zsetPScoreSep byte = zsetNScoreSep + 1
zsetStopScoreSep byte = zsetPScoreSep + 1
zsetStartMemSep byte = ':'
zsetStopMemSep byte = zsetStartMemSep + 1
)
func checkZSetKMSize(key []byte, member []byte) error {
if len(key) > MaxKeySize || len(key) == 0 {
return errKeySize
} else if len(member) > MaxZSetMemberSize || len(member) == 0 {
return errZSetMemberSize
}
return nil
}
func (db *DB) zEncodeSizeKey(key []byte) []byte {
buf := make([]byte, len(key)+2)
buf[0] = db.index
buf[1] = ZSizeType
copy(buf[2:], key)
return buf
}
func (db *DB) zDecodeSizeKey(ek []byte) ([]byte, error) {
if len(ek) < 2 || ek[0] != db.index || ek[1] != ZSizeType {
return nil, errZSizeKey
}
return ek[2:], nil
}
func (db *DB) zEncodeSetKey(key []byte, member []byte) []byte {
buf := make([]byte, len(key)+len(member)+5)
pos := 0
buf[pos] = db.index
pos++
buf[pos] = ZSetType
pos++
binary.BigEndian.PutUint16(buf[pos:], uint16(len(key)))
pos += 2
copy(buf[pos:], key)
pos += len(key)
buf[pos] = zsetStartMemSep
pos++
copy(buf[pos:], member)
return buf
}
func (db *DB) zDecodeSetKey(ek []byte) ([]byte, []byte, error) {
if len(ek) < 5 || ek[0] != db.index || ek[1] != ZSetType {
return nil, nil, errZSetKey
}
keyLen := int(binary.BigEndian.Uint16(ek[2:]))
if keyLen+5 > len(ek) {
return nil, nil, errZSetKey
}
key := ek[4 : 4+keyLen]
if ek[4+keyLen] != zsetStartMemSep {
return nil, nil, errZSetKey
}
member := ek[5+keyLen:]
return key, member, nil
}
func (db *DB) zEncodeStartSetKey(key []byte) []byte {
k := db.zEncodeSetKey(key, nil)
return k
}
func (db *DB) zEncodeStopSetKey(key []byte) []byte {
k := db.zEncodeSetKey(key, nil)
k[len(k)-1] = zsetStartMemSep + 1
return k
}
func (db *DB) zEncodeScoreKey(key []byte, member []byte, score int64) []byte {
buf := make([]byte, len(key)+len(member)+14)
pos := 0
buf[pos] = db.index
pos++
buf[pos] = ZScoreType
pos++
binary.BigEndian.PutUint16(buf[pos:], uint16(len(key)))
pos += 2
copy(buf[pos:], key)
pos += len(key)
if score < 0 {
buf[pos] = zsetNScoreSep
} else {
buf[pos] = zsetPScoreSep
}
pos++
binary.BigEndian.PutUint64(buf[pos:], uint64(score))
pos += 8
buf[pos] = zsetStartMemSep
pos++
copy(buf[pos:], member)
return buf
}
func (db *DB) zEncodeStartScoreKey(key []byte, score int64) []byte {
return db.zEncodeScoreKey(key, nil, score)
}
func (db *DB) zEncodeStopScoreKey(key []byte, score int64) []byte {
k := db.zEncodeScoreKey(key, nil, score)
k[len(k)-1] = zsetStopMemSep
return k
}
func (db *DB) zDecodeScoreKey(ek []byte) (key []byte, member []byte, score int64, err error) {
if len(ek) < 14 || ek[0] != db.index || ek[1] != ZScoreType {
err = errZScoreKey
return
}
keyLen := int(binary.BigEndian.Uint16(ek[2:]))
if keyLen+14 > len(ek) {
err = errZScoreKey
return
}
key = ek[4 : 4+keyLen]
pos := 4 + keyLen
if (ek[pos] != zsetNScoreSep) && (ek[pos] != zsetPScoreSep) {
err = errZScoreKey
return
}
pos++
score = int64(binary.BigEndian.Uint64(ek[pos:]))
pos += 8
if ek[pos] != zsetStartMemSep {
err = errZScoreKey
return
}
pos++
member = ek[pos:]
return
}
func (db *DB) zSetItem(t *batch, key []byte, score int64, member []byte) (int64, error) {
if score <= MinScore || score >= MaxScore {
return 0, errScoreOverflow
}
var exists int64 = 0
ek := db.zEncodeSetKey(key, member)
if v, err := db.bucket.Get(ek); err != nil {
return 0, err
} else if v != nil {
exists = 1
if s, err := Int64(v, err); err != nil {
return 0, err
} else {
sk := db.zEncodeScoreKey(key, member, s)
t.Delete(sk)
}
}
t.Put(ek, PutInt64(score))
sk := db.zEncodeScoreKey(key, member, score)
t.Put(sk, []byte{})
return exists, nil
}
func (db *DB) zDelItem(t *batch, key []byte, member []byte, skipDelScore bool) (int64, error) {
ek := db.zEncodeSetKey(key, member)
if v, err := db.bucket.Get(ek); err != nil {
return 0, err
} else if v == nil {
//not exists
return 0, nil
} else {
//exists
if !skipDelScore {
//we must del score
if s, err := Int64(v, err); err != nil {
return 0, err
} else {
sk := db.zEncodeScoreKey(key, member, s)
t.Delete(sk)
}
}
}
t.Delete(ek)
return 1, nil
}
func (db *DB) zDelete(t *batch, key []byte) int64 {
delMembCnt, _ := db.zRemRange(t, key, MinScore, MaxScore, 0, -1)
// todo : log err
return delMembCnt
}
func (db *DB) zExpireAt(key []byte, when int64) (int64, error) {
t := db.zsetBatch
t.Lock()
defer t.Unlock()
if zcnt, err := db.ZCard(key); err != nil || zcnt == 0 {
return 0, err
} else {
db.expireAt(t, ZSetType, key, when)
if err := t.Commit(); err != nil {
return 0, err
}
}
return 1, nil
}
func (db *DB) ZAdd(key []byte, args ...ScorePair) (int64, error) {
if len(args) == 0 {
return 0, nil
}
t := db.zsetBatch
t.Lock()
defer t.Unlock()
var num int64 = 0
for i := 0; i < len(args); i++ {
score := args[i].Score
member := args[i].Member
if err := checkZSetKMSize(key, member); err != nil {
return 0, err
}
if n, err := db.zSetItem(t, key, score, member); err != nil {
return 0, err
} else if n == 0 {
//add new
num++
}
}
if _, err := db.zIncrSize(t, key, num); err != nil {
return 0, err
}
//todo add binlog
err := t.Commit()
return num, err
}
func (db *DB) zIncrSize(t *batch, key []byte, delta int64) (int64, error) {
sk := db.zEncodeSizeKey(key)
size, err := Int64(db.bucket.Get(sk))
if err != nil {
return 0, err
} else {
size += delta
if size <= 0 {
size = 0
t.Delete(sk)
db.rmExpire(t, ZSetType, key)
} else {
t.Put(sk, PutInt64(size))
}
}
return size, nil
}
func (db *DB) ZCard(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
}
sk := db.zEncodeSizeKey(key)
return Int64(db.bucket.Get(sk))
}
func (db *DB) ZScore(key []byte, member []byte) (int64, error) {
if err := checkZSetKMSize(key, member); err != nil {
return InvalidScore, err
}
var score int64 = InvalidScore
k := db.zEncodeSetKey(key, member)
if v, err := db.bucket.Get(k); err != nil {
return InvalidScore, err
} else if v == nil {
return InvalidScore, ErrScoreMiss
} else {
if score, err = Int64(v, nil); err != nil {
return InvalidScore, err
}
}
return score, nil
}
func (db *DB) ZRem(key []byte, members ...[]byte) (int64, error) {
if len(members) == 0 {
return 0, nil
}
t := db.zsetBatch
t.Lock()
defer t.Unlock()
var num int64 = 0
for i := 0; i < len(members); i++ {
if err := checkZSetKMSize(key, members[i]); err != nil {
return 0, err
}
if n, err := db.zDelItem(t, key, members[i], false); err != nil {
return 0, err
} else if n == 1 {
num++
}
}
if _, err := db.zIncrSize(t, key, -num); err != nil {
return 0, err
}
err := t.Commit()
return num, err
}
func (db *DB) ZIncrBy(key []byte, delta int64, member []byte) (int64, error) {
if err := checkZSetKMSize(key, member); err != nil {
return InvalidScore, err
}
t := db.zsetBatch
t.Lock()
defer t.Unlock()
ek := db.zEncodeSetKey(key, member)
var oldScore int64 = 0
v, err := db.bucket.Get(ek)
if err != nil {
return InvalidScore, err
} else if v == nil {
db.zIncrSize(t, key, 1)
} else {
if oldScore, err = Int64(v, err); err != nil {
return InvalidScore, err
}
}
newScore := oldScore + delta
if newScore >= MaxScore || newScore <= MinScore {
return InvalidScore, errScoreOverflow
}
sk := db.zEncodeScoreKey(key, member, newScore)
t.Put(sk, []byte{})
t.Put(ek, PutInt64(newScore))
if v != nil {
// so as to update score, we must delete the old one
oldSk := db.zEncodeScoreKey(key, member, oldScore)
t.Delete(oldSk)
}
err = t.Commit()
return newScore, err
}
func (db *DB) ZCount(key []byte, min int64, max int64) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
}
minKey := db.zEncodeStartScoreKey(key, min)
maxKey := db.zEncodeStopScoreKey(key, max)
rangeType := store.RangeROpen
it := db.bucket.RangeLimitIterator(minKey, maxKey, rangeType, 0, -1)
var n int64 = 0
for ; it.Valid(); it.Next() {
n++
}
it.Close()
return n, nil
}
func (db *DB) zrank(key []byte, member []byte, reverse bool) (int64, error) {
if err := checkZSetKMSize(key, member); err != nil {
return 0, err
}
k := db.zEncodeSetKey(key, member)
it := db.bucket.NewIterator()
defer it.Close()
if v := it.Find(k); v == nil {
return -1, nil
} else {
if s, err := Int64(v, nil); err != nil {
return 0, err
} else {
var rit *store.RangeLimitIterator
sk := db.zEncodeScoreKey(key, member, s)
if !reverse {
minKey := db.zEncodeStartScoreKey(key, MinScore)
rit = store.NewRangeIterator(it, &store.Range{minKey, sk, store.RangeClose})
} else {
maxKey := db.zEncodeStopScoreKey(key, MaxScore)
rit = store.NewRevRangeIterator(it, &store.Range{sk, maxKey, store.RangeClose})
}
var lastKey []byte = nil
var n int64 = 0
for ; rit.Valid(); rit.Next() {
n++
lastKey = rit.BufKey(lastKey)
}
if _, m, _, err := db.zDecodeScoreKey(lastKey); err == nil && bytes.Equal(m, member) {
n--
return n, nil
}
}
}
return -1, nil
}
func (db *DB) zIterator(key []byte, min int64, max int64, offset int, count int, reverse bool) *store.RangeLimitIterator {
minKey := db.zEncodeStartScoreKey(key, min)
maxKey := db.zEncodeStopScoreKey(key, max)
if !reverse {
return db.bucket.RangeLimitIterator(minKey, maxKey, store.RangeClose, offset, count)
} else {
return db.bucket.RevRangeLimitIterator(minKey, maxKey, store.RangeClose, offset, count)
}
}
func (db *DB) zRemRange(t *batch, key []byte, min int64, max int64, offset int, count int) (int64, error) {
if len(key) > MaxKeySize {
return 0, errKeySize
}
it := db.zIterator(key, min, max, offset, count, false)
var num int64 = 0
for ; it.Valid(); it.Next() {
sk := it.RawKey()
_, m, _, err := db.zDecodeScoreKey(sk)
if err != nil {
continue
}
if n, err := db.zDelItem(t, key, m, true); err != nil {
return 0, err
} else if n == 1 {
num++
}
t.Delete(sk)
}
it.Close()
if _, err := db.zIncrSize(t, key, -num); err != nil {
return 0, err
}
return num, nil
}
func (db *DB) zRange(key []byte, min int64, max int64, offset int, count int, reverse bool) ([]ScorePair, error) {
if len(key) > MaxKeySize {
return nil, errKeySize
}
if offset < 0 {
return []ScorePair{}, nil
}
nv := 64
if count > 0 {
nv = count
}
v := make([]ScorePair, 0, nv)
var it *store.RangeLimitIterator
//if reverse and offset is 0, count < 0, we may use forward iterator then reverse
//because store iterator prev is slower than next
if !reverse || (offset == 0 && count < 0) {
it = db.zIterator(key, min, max, offset, count, false)
} else {
it = db.zIterator(key, min, max, offset, count, true)
}
for ; it.Valid(); it.Next() {
_, m, s, err := db.zDecodeScoreKey(it.Key())
//may be we will check key equal?
if err != nil {
continue
}
v = append(v, ScorePair{Member: m, Score: s})
}
it.Close()
if reverse && (offset == 0 && count < 0) {
for i, j := 0, len(v)-1; i < j; i, j = i+1, j-1 {
v[i], v[j] = v[j], v[i]
}
}
return v, nil
}
func (db *DB) zParseLimit(key []byte, start int, stop int) (offset int, count int, err error) {
if start < 0 || stop < 0 {
//refer redis implementation
var size int64
size, err = db.ZCard(key)
if err != nil {
return
}
llen := int(size)
if start < 0 {
start = llen + start
}
if stop < 0 {
stop = llen + stop
}
if start < 0 {
start = 0
}
if start >= llen {
offset = -1
return
}
}
if start > stop {
offset = -1
return
}
offset = start
count = (stop - start) + 1
return
}
func (db *DB) ZClear(key []byte) (int64, error) {
t := db.zsetBatch
t.Lock()
defer t.Unlock()
rmCnt, err := db.zRemRange(t, key, MinScore, MaxScore, 0, -1)
if err == nil {
err = t.Commit()
}
return rmCnt, err
}
func (db *DB) ZMclear(keys ...[]byte) (int64, error) {
t := db.zsetBatch
t.Lock()
defer t.Unlock()
for _, key := range keys {
if _, err := db.zRemRange(t, key, MinScore, MaxScore, 0, -1); err != nil {
return 0, err
}
}
err := t.Commit()
return int64(len(keys)), err
}
func (db *DB) ZRange(key []byte, start int, stop int) ([]ScorePair, error) {
return db.ZRangeGeneric(key, start, stop, false)
}
//min and max must be inclusive
//if no limit, set offset = 0 and count = -1
func (db *DB) ZRangeByScore(key []byte, min int64, max int64,
offset int, count int) ([]ScorePair, error) {
return db.ZRangeByScoreGeneric(key, min, max, offset, count, false)
}
func (db *DB) ZRank(key []byte, member []byte) (int64, error) {
return db.zrank(key, member, false)
}
func (db *DB) ZRemRangeByRank(key []byte, start int, stop int) (int64, error) {
offset, count, err := db.zParseLimit(key, start, stop)
if err != nil {
return 0, err
}
var rmCnt int64
t := db.zsetBatch
t.Lock()
defer t.Unlock()
rmCnt, err = db.zRemRange(t, key, MinScore, MaxScore, offset, count)
if err == nil {
err = t.Commit()
}
return rmCnt, err
}
//min and max must be inclusive
func (db *DB) ZRemRangeByScore(key []byte, min int64, max int64) (int64, error) {
t := db.zsetBatch
t.Lock()
defer t.Unlock()
rmCnt, err := db.zRemRange(t, key, min, max, 0, -1)
if err == nil {
err = t.Commit()
}
return rmCnt, err
}
func (db *DB) ZRevRange(key []byte, start int, stop int) ([]ScorePair, error) {
return db.ZRangeGeneric(key, start, stop, true)
}
func (db *DB) ZRevRank(key []byte, member []byte) (int64, error) {
return db.zrank(key, member, true)
}
//min and max must be inclusive
//if no limit, set offset = 0 and count = -1
func (db *DB) ZRevRangeByScore(key []byte, min int64, max int64, offset int, count int) ([]ScorePair, error) {
return db.ZRangeByScoreGeneric(key, min, max, offset, count, true)
}
func (db *DB) ZRangeGeneric(key []byte, start int, stop int, reverse bool) ([]ScorePair, error) {
offset, count, err := db.zParseLimit(key, start, stop)
if err != nil {
return nil, err
}
return db.zRange(key, MinScore, MaxScore, offset, count, reverse)
}
//min and max must be inclusive
//if no limit, set offset = 0 and count = -1
func (db *DB) ZRangeByScoreGeneric(key []byte, min int64, max int64,
offset int, count int, reverse bool) ([]ScorePair, error) {
return db.zRange(key, min, max, offset, count, reverse)
}
func (db *DB) zFlush() (drop int64, err error) {
t := db.zsetBatch
t.Lock()
defer t.Unlock()
return db.flushType(t, ZSetType)
}
func (db *DB) ZExpire(key []byte, duration int64) (int64, error) {
if duration <= 0 {
return 0, errExpireValue
}
return db.zExpireAt(key, time.Now().Unix()+duration)
}
func (db *DB) ZExpireAt(key []byte, when int64) (int64, error) {
if when <= time.Now().Unix() {
return 0, errExpireValue
}
return db.zExpireAt(key, when)
}
func (db *DB) ZTTL(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return -1, err
}
return db.ttl(ZSetType, key)
}
func (db *DB) ZPersist(key []byte) (int64, error) {
if err := checkKeySize(key); err != nil {
return 0, err
}
t := db.zsetBatch
t.Lock()
defer t.Unlock()
n, err := db.rmExpire(t, ZSetType, key)
if err != nil {
return 0, err
}
err = t.Commit()
return n, err
}
func getAggregateFunc(aggregate byte) func(int64, int64) int64 {
switch aggregate {
case AggregateSum:
return func(a int64, b int64) int64 {
return a + b
}
case AggregateMax:
return func(a int64, b int64) int64 {
if a > b {
return a
}
return b
}
case AggregateMin:
return func(a int64, b int64) int64 {
if a > b {
return b
}
return a
}
}
return nil
}
func (db *DB) ZUnionStore(destKey []byte, srcKeys [][]byte, weights []int64, aggregate byte) (int64, error) {
var destMap = map[string]int64{}
aggregateFunc := getAggregateFunc(aggregate)
if aggregateFunc == nil {
return 0, errInvalidAggregate
}
if len(srcKeys) < 1 {
return 0, errInvalidSrcKeyNum
}
if weights != nil {
if len(srcKeys) != len(weights) {
return 0, errInvalidWeightNum
}
} else {
weights = make([]int64, len(srcKeys))
for i := 0; i < len(weights); i++ {
weights[i] = 1
}
}
for i, key := range srcKeys {
scorePairs, err := db.ZRange(key, 0, -1)
if err != nil {
return 0, err
}
for _, pair := range scorePairs {
if score, ok := destMap[String(pair.Member)]; !ok {
destMap[String(pair.Member)] = pair.Score * weights[i]
} else {
destMap[String(pair.Member)] = aggregateFunc(score, pair.Score*weights[i])
}
}
}
t := db.zsetBatch
t.Lock()
defer t.Unlock()
db.zDelete(t, destKey)
for member, score := range destMap {
if err := checkZSetKMSize(destKey, []byte(member)); err != nil {
return 0, err
}
if _, err := db.zSetItem(t, destKey, score, []byte(member)); err != nil {
return 0, err
}
}
var num = int64(len(destMap))
sk := db.zEncodeSizeKey(destKey)
t.Put(sk, PutInt64(num))
//todo add binlog
if err := t.Commit(); err != nil {
return 0, err
}
return num, nil
}
func (db *DB) ZInterStore(destKey []byte, srcKeys [][]byte, weights []int64, aggregate byte) (int64, error) {
aggregateFunc := getAggregateFunc(aggregate)
if aggregateFunc == nil {
return 0, errInvalidAggregate
}
if len(srcKeys) < 1 {
return 0, errInvalidSrcKeyNum
}
if weights != nil {
if len(srcKeys) != len(weights) {
return 0, errInvalidWeightNum
}
} else {
weights = make([]int64, len(srcKeys))
for i := 0; i < len(weights); i++ {
weights[i] = 1
}
}
var destMap = map[string]int64{}
scorePairs, err := db.ZRange(srcKeys[0], 0, -1)
if err != nil {
return 0, err
}
for _, pair := range scorePairs {
destMap[String(pair.Member)] = pair.Score * weights[0]
}
for i, key := range srcKeys[1:] {
scorePairs, err := db.ZRange(key, 0, -1)
if err != nil {
return 0, err
}
tmpMap := map[string]int64{}
for _, pair := range scorePairs {
if score, ok := destMap[String(pair.Member)]; ok {
tmpMap[String(pair.Member)] = aggregateFunc(score, pair.Score*weights[i+1])
}
}
destMap = tmpMap
}
t := db.zsetBatch
t.Lock()
defer t.Unlock()
db.zDelete(t, destKey)
for member, score := range destMap {
if err := checkZSetKMSize(destKey, []byte(member)); err != nil {
return 0, err
}
if _, err := db.zSetItem(t, destKey, score, []byte(member)); err != nil {
return 0, err
}
}
var num int64 = int64(len(destMap))
sk := db.zEncodeSizeKey(destKey)
t.Put(sk, PutInt64(num))
//todo add binlog
if err := t.Commit(); err != nil {
return 0, err
}
return num, nil
}
func (db *DB) ZScan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.scan(ZSizeType, key, count, inclusive, match)
}

113
vendor/github.com/lunny/nodb/tx.go generated vendored Normal file
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@ -0,0 +1,113 @@
package nodb
import (
"errors"
"fmt"
"github.com/lunny/nodb/store"
)
var (
ErrNestTx = errors.New("nest transaction not supported")
ErrTxDone = errors.New("Transaction has already been committed or rolled back")
)
type Tx struct {
*DB
tx *store.Tx
logs [][]byte
}
func (db *DB) IsTransaction() bool {
return db.status == DBInTransaction
}
// Begin a transaction, it will block all other write operations before calling Commit or Rollback.
// You must be very careful to prevent long-time transaction.
func (db *DB) Begin() (*Tx, error) {
if db.IsTransaction() {
return nil, ErrNestTx
}
tx := new(Tx)
tx.DB = new(DB)
tx.DB.l = db.l
tx.l.wLock.Lock()
tx.DB.sdb = db.sdb
var err error
tx.tx, err = db.sdb.Begin()
if err != nil {
tx.l.wLock.Unlock()
return nil, err
}
tx.DB.bucket = tx.tx
tx.DB.status = DBInTransaction
tx.DB.index = db.index
tx.DB.kvBatch = tx.newBatch()
tx.DB.listBatch = tx.newBatch()
tx.DB.hashBatch = tx.newBatch()
tx.DB.zsetBatch = tx.newBatch()
tx.DB.binBatch = tx.newBatch()
tx.DB.setBatch = tx.newBatch()
return tx, nil
}
func (tx *Tx) Commit() error {
if tx.tx == nil {
return ErrTxDone
}
tx.l.commitLock.Lock()
err := tx.tx.Commit()
tx.tx = nil
if len(tx.logs) > 0 {
tx.l.binlog.Log(tx.logs...)
}
tx.l.commitLock.Unlock()
tx.l.wLock.Unlock()
tx.DB.bucket = nil
return err
}
func (tx *Tx) Rollback() error {
if tx.tx == nil {
return ErrTxDone
}
err := tx.tx.Rollback()
tx.tx = nil
tx.l.wLock.Unlock()
tx.DB.bucket = nil
return err
}
func (tx *Tx) newBatch() *batch {
return tx.l.newBatch(tx.tx.NewWriteBatch(), &txBatchLocker{}, tx)
}
func (tx *Tx) Select(index int) error {
if index < 0 || index >= int(MaxDBNumber) {
return fmt.Errorf("invalid db index %d", index)
}
tx.DB.index = uint8(index)
return nil
}

113
vendor/github.com/lunny/nodb/util.go generated vendored Normal file
View file

@ -0,0 +1,113 @@
package nodb
import (
"encoding/binary"
"errors"
"reflect"
"strconv"
"unsafe"
)
var errIntNumber = errors.New("invalid integer")
// no copy to change slice to string
// use your own risk
func String(b []byte) (s string) {
pbytes := (*reflect.SliceHeader)(unsafe.Pointer(&b))
pstring := (*reflect.StringHeader)(unsafe.Pointer(&s))
pstring.Data = pbytes.Data
pstring.Len = pbytes.Len
return
}
// no copy to change string to slice
// use your own risk
func Slice(s string) (b []byte) {
pbytes := (*reflect.SliceHeader)(unsafe.Pointer(&b))
pstring := (*reflect.StringHeader)(unsafe.Pointer(&s))
pbytes.Data = pstring.Data
pbytes.Len = pstring.Len
pbytes.Cap = pstring.Len
return
}
func Int64(v []byte, err error) (int64, error) {
if err != nil {
return 0, err
} else if v == nil || len(v) == 0 {
return 0, nil
} else if len(v) != 8 {
return 0, errIntNumber
}
return int64(binary.LittleEndian.Uint64(v)), nil
}
func PutInt64(v int64) []byte {
var b []byte
pbytes := (*reflect.SliceHeader)(unsafe.Pointer(&b))
pbytes.Data = uintptr(unsafe.Pointer(&v))
pbytes.Len = 8
pbytes.Cap = 8
return b
}
func StrInt64(v []byte, err error) (int64, error) {
if err != nil {
return 0, err
} else if v == nil {
return 0, nil
} else {
return strconv.ParseInt(String(v), 10, 64)
}
}
func StrInt32(v []byte, err error) (int32, error) {
if err != nil {
return 0, err
} else if v == nil {
return 0, nil
} else {
res, err := strconv.ParseInt(String(v), 10, 32)
return int32(res), err
}
}
func StrInt8(v []byte, err error) (int8, error) {
if err != nil {
return 0, err
} else if v == nil {
return 0, nil
} else {
res, err := strconv.ParseInt(String(v), 10, 8)
return int8(res), err
}
}
func StrPutInt64(v int64) []byte {
return strconv.AppendInt(nil, v, 10)
}
func MinUInt32(a uint32, b uint32) uint32 {
if a > b {
return b
} else {
return a
}
}
func MaxUInt32(a uint32, b uint32) uint32 {
if a > b {
return a
} else {
return b
}
}
func MaxInt32(a int32, b int32) int32 {
if a > b {
return a
} else {
return b
}
}

23
vendor/github.com/pkg/errors/LICENSE generated vendored Normal file
View file

@ -0,0 +1,23 @@
Copyright (c) 2015, Dave Cheney <dave@cheney.net>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

282
vendor/github.com/pkg/errors/errors.go generated vendored Normal file
View file

@ -0,0 +1,282 @@
// Package errors provides simple error handling primitives.
//
// The traditional error handling idiom in Go is roughly akin to
//
// if err != nil {
// return err
// }
//
// which when applied recursively up the call stack results in error reports
// without context or debugging information. The errors package allows
// programmers to add context to the failure path in their code in a way
// that does not destroy the original value of the error.
//
// Adding context to an error
//
// The errors.Wrap function returns a new error that adds context to the
// original error by recording a stack trace at the point Wrap is called,
// together with the supplied message. For example
//
// _, err := ioutil.ReadAll(r)
// if err != nil {
// return errors.Wrap(err, "read failed")
// }
//
// If additional control is required, the errors.WithStack and
// errors.WithMessage functions destructure errors.Wrap into its component
// operations: annotating an error with a stack trace and with a message,
// respectively.
//
// Retrieving the cause of an error
//
// Using errors.Wrap constructs a stack of errors, adding context to the
// preceding error. Depending on the nature of the error it may be necessary
// to reverse the operation of errors.Wrap to retrieve the original error
// for inspection. Any error value which implements this interface
//
// type causer interface {
// Cause() error
// }
//
// can be inspected by errors.Cause. errors.Cause will recursively retrieve
// the topmost error that does not implement causer, which is assumed to be
// the original cause. For example:
//
// switch err := errors.Cause(err).(type) {
// case *MyError:
// // handle specifically
// default:
// // unknown error
// }
//
// Although the causer interface is not exported by this package, it is
// considered a part of its stable public interface.
//
// Formatted printing of errors
//
// All error values returned from this package implement fmt.Formatter and can
// be formatted by the fmt package. The following verbs are supported:
//
// %s print the error. If the error has a Cause it will be
// printed recursively.
// %v see %s
// %+v extended format. Each Frame of the error's StackTrace will
// be printed in detail.
//
// Retrieving the stack trace of an error or wrapper
//
// New, Errorf, Wrap, and Wrapf record a stack trace at the point they are
// invoked. This information can be retrieved with the following interface:
//
// type stackTracer interface {
// StackTrace() errors.StackTrace
// }
//
// The returned errors.StackTrace type is defined as
//
// type StackTrace []Frame
//
// The Frame type represents a call site in the stack trace. Frame supports
// the fmt.Formatter interface that can be used for printing information about
// the stack trace of this error. For example:
//
// if err, ok := err.(stackTracer); ok {
// for _, f := range err.StackTrace() {
// fmt.Printf("%+s:%d", f)
// }
// }
//
// Although the stackTracer interface is not exported by this package, it is
// considered a part of its stable public interface.
//
// See the documentation for Frame.Format for more details.
package errors
import (
"fmt"
"io"
)
// New returns an error with the supplied message.
// New also records the stack trace at the point it was called.
func New(message string) error {
return &fundamental{
msg: message,
stack: callers(),
}
}
// Errorf formats according to a format specifier and returns the string
// as a value that satisfies error.
// Errorf also records the stack trace at the point it was called.
func Errorf(format string, args ...interface{}) error {
return &fundamental{
msg: fmt.Sprintf(format, args...),
stack: callers(),
}
}
// fundamental is an error that has a message and a stack, but no caller.
type fundamental struct {
msg string
*stack
}
func (f *fundamental) Error() string { return f.msg }
func (f *fundamental) Format(s fmt.State, verb rune) {
switch verb {
case 'v':
if s.Flag('+') {
io.WriteString(s, f.msg)
f.stack.Format(s, verb)
return
}
fallthrough
case 's':
io.WriteString(s, f.msg)
case 'q':
fmt.Fprintf(s, "%q", f.msg)
}
}
// WithStack annotates err with a stack trace at the point WithStack was called.
// If err is nil, WithStack returns nil.
func WithStack(err error) error {
if err == nil {
return nil
}
return &withStack{
err,
callers(),
}
}
type withStack struct {
error
*stack
}
func (w *withStack) Cause() error { return w.error }
func (w *withStack) Format(s fmt.State, verb rune) {
switch verb {
case 'v':
if s.Flag('+') {
fmt.Fprintf(s, "%+v", w.Cause())
w.stack.Format(s, verb)
return
}
fallthrough
case 's':
io.WriteString(s, w.Error())
case 'q':
fmt.Fprintf(s, "%q", w.Error())
}
}
// Wrap returns an error annotating err with a stack trace
// at the point Wrap is called, and the supplied message.
// If err is nil, Wrap returns nil.
func Wrap(err error, message string) error {
if err == nil {
return nil
}
err = &withMessage{
cause: err,
msg: message,
}
return &withStack{
err,
callers(),
}
}
// Wrapf returns an error annotating err with a stack trace
// at the point Wrapf is called, and the format specifier.
// If err is nil, Wrapf returns nil.
func Wrapf(err error, format string, args ...interface{}) error {
if err == nil {
return nil
}
err = &withMessage{
cause: err,
msg: fmt.Sprintf(format, args...),
}
return &withStack{
err,
callers(),
}
}
// WithMessage annotates err with a new message.
// If err is nil, WithMessage returns nil.
func WithMessage(err error, message string) error {
if err == nil {
return nil
}
return &withMessage{
cause: err,
msg: message,
}
}
// WithMessagef annotates err with the format specifier.
// If err is nil, WithMessagef returns nil.
func WithMessagef(err error, format string, args ...interface{}) error {
if err == nil {
return nil
}
return &withMessage{
cause: err,
msg: fmt.Sprintf(format, args...),
}
}
type withMessage struct {
cause error
msg string
}
func (w *withMessage) Error() string { return w.msg + ": " + w.cause.Error() }
func (w *withMessage) Cause() error { return w.cause }
func (w *withMessage) Format(s fmt.State, verb rune) {
switch verb {
case 'v':
if s.Flag('+') {
fmt.Fprintf(s, "%+v\n", w.Cause())
io.WriteString(s, w.msg)
return
}
fallthrough
case 's', 'q':
io.WriteString(s, w.Error())
}
}
// Cause returns the underlying cause of the error, if possible.
// An error value has a cause if it implements the following
// interface:
//
// type causer interface {
// Cause() error
// }
//
// If the error does not implement Cause, the original error will
// be returned. If the error is nil, nil will be returned without further
// investigation.
func Cause(err error) error {
type causer interface {
Cause() error
}
for err != nil {
cause, ok := err.(causer)
if !ok {
break
}
err = cause.Cause()
}
return err
}

147
vendor/github.com/pkg/errors/stack.go generated vendored Normal file
View file

@ -0,0 +1,147 @@
package errors
import (
"fmt"
"io"
"path"
"runtime"
"strings"
)
// Frame represents a program counter inside a stack frame.
type Frame uintptr
// pc returns the program counter for this frame;
// multiple frames may have the same PC value.
func (f Frame) pc() uintptr { return uintptr(f) - 1 }
// file returns the full path to the file that contains the
// function for this Frame's pc.
func (f Frame) file() string {
fn := runtime.FuncForPC(f.pc())
if fn == nil {
return "unknown"
}
file, _ := fn.FileLine(f.pc())
return file
}
// line returns the line number of source code of the
// function for this Frame's pc.
func (f Frame) line() int {
fn := runtime.FuncForPC(f.pc())
if fn == nil {
return 0
}
_, line := fn.FileLine(f.pc())
return line
}
// Format formats the frame according to the fmt.Formatter interface.
//
// %s source file
// %d source line
// %n function name
// %v equivalent to %s:%d
//
// Format accepts flags that alter the printing of some verbs, as follows:
//
// %+s function name and path of source file relative to the compile time
// GOPATH separated by \n\t (<funcname>\n\t<path>)
// %+v equivalent to %+s:%d
func (f Frame) Format(s fmt.State, verb rune) {
switch verb {
case 's':
switch {
case s.Flag('+'):
pc := f.pc()
fn := runtime.FuncForPC(pc)
if fn == nil {
io.WriteString(s, "unknown")
} else {
file, _ := fn.FileLine(pc)
fmt.Fprintf(s, "%s\n\t%s", fn.Name(), file)
}
default:
io.WriteString(s, path.Base(f.file()))
}
case 'd':
fmt.Fprintf(s, "%d", f.line())
case 'n':
name := runtime.FuncForPC(f.pc()).Name()
io.WriteString(s, funcname(name))
case 'v':
f.Format(s, 's')
io.WriteString(s, ":")
f.Format(s, 'd')
}
}
// StackTrace is stack of Frames from innermost (newest) to outermost (oldest).
type StackTrace []Frame
// Format formats the stack of Frames according to the fmt.Formatter interface.
//
// %s lists source files for each Frame in the stack
// %v lists the source file and line number for each Frame in the stack
//
// Format accepts flags that alter the printing of some verbs, as follows:
//
// %+v Prints filename, function, and line number for each Frame in the stack.
func (st StackTrace) Format(s fmt.State, verb rune) {
switch verb {
case 'v':
switch {
case s.Flag('+'):
for _, f := range st {
fmt.Fprintf(s, "\n%+v", f)
}
case s.Flag('#'):
fmt.Fprintf(s, "%#v", []Frame(st))
default:
fmt.Fprintf(s, "%v", []Frame(st))
}
case 's':
fmt.Fprintf(s, "%s", []Frame(st))
}
}
// stack represents a stack of program counters.
type stack []uintptr
func (s *stack) Format(st fmt.State, verb rune) {
switch verb {
case 'v':
switch {
case st.Flag('+'):
for _, pc := range *s {
f := Frame(pc)
fmt.Fprintf(st, "\n%+v", f)
}
}
}
}
func (s *stack) StackTrace() StackTrace {
f := make([]Frame, len(*s))
for i := 0; i < len(f); i++ {
f[i] = Frame((*s)[i])
}
return f
}
func callers() *stack {
const depth = 32
var pcs [depth]uintptr
n := runtime.Callers(3, pcs[:])
var st stack = pcs[0:n]
return &st
}
// funcname removes the path prefix component of a function's name reported by func.Name().
func funcname(name string) string {
i := strings.LastIndex(name, "/")
name = name[i+1:]
i = strings.Index(name, ".")
return name[i+1:]
}

12
vendor/github.com/siddontang/go-snappy/AUTHORS generated vendored Normal file
View file

@ -0,0 +1,12 @@
# This is the official list of Snappy-Go authors for copyright purposes.
# This file is distinct from the CONTRIBUTORS files.
# See the latter for an explanation.
# Names should be added to this file as
# Name or Organization <email address>
# The email address is not required for organizations.
# Please keep the list sorted.
Google Inc.
Jan Mercl <0xjnml@gmail.com>

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