forgejo-federation/vendor/gitea.com/macaron/session/couchbase/couchbase.go
Tamal Saha 171b359877 Use gitea forked macaron (#7933)
Signed-off-by: Tamal Saha <tamal@appscode.com>
2019-08-23 12:40:29 -04:00

227 lines
4.9 KiB
Go

// 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"
"gitea.com/macaron/session"
"github.com/couchbaselabs/go-couchbase"
)
// 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
}
}
// Destroy deletes a session by session ID.
func (p *CouchbaseProvider) Destroy(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{})
}