forgejo-federation/vendor/github.com/go-redis/redis/v7/universal.go
zeripath 7f8e3192cd
Allow common redis and leveldb connections (#12385)
* Allow common redis and leveldb connections

Prevents multiple reopening of redis and leveldb connections to the same
place by sharing connections.

Further allows for more configurable redis connection type using the
redisURI and a leveldbURI scheme.

Signed-off-by: Andrew Thornton <art27@cantab.net>

* add unit-test

Signed-off-by: Andrew Thornton <art27@cantab.net>

* as per @lunny

Signed-off-by: Andrew Thornton <art27@cantab.net>

* add test

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Update modules/cache/cache_redis.go

* Update modules/queue/queue_disk.go

* Update modules/cache/cache_redis.go

* Update modules/cache/cache_redis.go

* Update modules/queue/unique_queue_disk.go

* Update modules/queue/queue_disk.go

* Update modules/queue/unique_queue_disk.go

* Update modules/session/redis.go

Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: Lauris BH <lauris@nix.lv>
2020-09-28 00:09:46 +03:00

198 lines
5.2 KiB
Go
Vendored

package redis
import (
"context"
"crypto/tls"
"net"
"time"
)
// UniversalOptions information is required by UniversalClient to establish
// connections.
type UniversalOptions struct {
// Either a single address or a seed list of host:port addresses
// of cluster/sentinel nodes.
Addrs []string
// Database to be selected after connecting to the server.
// Only single-node and failover clients.
DB int
// Common options.
Dialer func(ctx context.Context, network, addr string) (net.Conn, error)
OnConnect func(*Conn) error
Username string
Password string
MaxRetries int
MinRetryBackoff time.Duration
MaxRetryBackoff time.Duration
DialTimeout time.Duration
ReadTimeout time.Duration
WriteTimeout time.Duration
PoolSize int
MinIdleConns int
MaxConnAge time.Duration
PoolTimeout time.Duration
IdleTimeout time.Duration
IdleCheckFrequency time.Duration
TLSConfig *tls.Config
// Only cluster clients.
MaxRedirects int
ReadOnly bool
RouteByLatency bool
RouteRandomly bool
// The sentinel master name.
// Only failover clients.
MasterName string
}
// Cluster returns cluster options created from the universal options.
func (o *UniversalOptions) Cluster() *ClusterOptions {
if len(o.Addrs) == 0 {
o.Addrs = []string{"127.0.0.1:6379"}
}
return &ClusterOptions{
Addrs: o.Addrs,
Dialer: o.Dialer,
OnConnect: o.OnConnect,
Username: o.Username,
Password: o.Password,
MaxRedirects: o.MaxRedirects,
ReadOnly: o.ReadOnly,
RouteByLatency: o.RouteByLatency,
RouteRandomly: o.RouteRandomly,
MaxRetries: o.MaxRetries,
MinRetryBackoff: o.MinRetryBackoff,
MaxRetryBackoff: o.MaxRetryBackoff,
DialTimeout: o.DialTimeout,
ReadTimeout: o.ReadTimeout,
WriteTimeout: o.WriteTimeout,
PoolSize: o.PoolSize,
MinIdleConns: o.MinIdleConns,
MaxConnAge: o.MaxConnAge,
PoolTimeout: o.PoolTimeout,
IdleTimeout: o.IdleTimeout,
IdleCheckFrequency: o.IdleCheckFrequency,
TLSConfig: o.TLSConfig,
}
}
// Failover returns failover options created from the universal options.
func (o *UniversalOptions) Failover() *FailoverOptions {
if len(o.Addrs) == 0 {
o.Addrs = []string{"127.0.0.1:26379"}
}
return &FailoverOptions{
SentinelAddrs: o.Addrs,
MasterName: o.MasterName,
Dialer: o.Dialer,
OnConnect: o.OnConnect,
DB: o.DB,
Username: o.Username,
Password: o.Password,
MaxRetries: o.MaxRetries,
MinRetryBackoff: o.MinRetryBackoff,
MaxRetryBackoff: o.MaxRetryBackoff,
DialTimeout: o.DialTimeout,
ReadTimeout: o.ReadTimeout,
WriteTimeout: o.WriteTimeout,
PoolSize: o.PoolSize,
MinIdleConns: o.MinIdleConns,
MaxConnAge: o.MaxConnAge,
PoolTimeout: o.PoolTimeout,
IdleTimeout: o.IdleTimeout,
IdleCheckFrequency: o.IdleCheckFrequency,
TLSConfig: o.TLSConfig,
}
}
// Simple returns basic options created from the universal options.
func (o *UniversalOptions) Simple() *Options {
addr := "127.0.0.1:6379"
if len(o.Addrs) > 0 {
addr = o.Addrs[0]
}
return &Options{
Addr: addr,
Dialer: o.Dialer,
OnConnect: o.OnConnect,
DB: o.DB,
Username: o.Username,
Password: o.Password,
MaxRetries: o.MaxRetries,
MinRetryBackoff: o.MinRetryBackoff,
MaxRetryBackoff: o.MaxRetryBackoff,
DialTimeout: o.DialTimeout,
ReadTimeout: o.ReadTimeout,
WriteTimeout: o.WriteTimeout,
PoolSize: o.PoolSize,
MinIdleConns: o.MinIdleConns,
MaxConnAge: o.MaxConnAge,
PoolTimeout: o.PoolTimeout,
IdleTimeout: o.IdleTimeout,
IdleCheckFrequency: o.IdleCheckFrequency,
TLSConfig: o.TLSConfig,
}
}
// --------------------------------------------------------------------
// UniversalClient is an abstract client which - based on the provided options -
// can connect to either clusters, or sentinel-backed failover instances
// or simple single-instance servers. This can be useful for testing
// cluster-specific applications locally.
type UniversalClient interface {
Cmdable
Context() context.Context
AddHook(Hook)
Watch(fn func(*Tx) error, keys ...string) error
Do(args ...interface{}) *Cmd
DoContext(ctx context.Context, args ...interface{}) *Cmd
Process(cmd Cmder) error
ProcessContext(ctx context.Context, cmd Cmder) error
Subscribe(channels ...string) *PubSub
PSubscribe(channels ...string) *PubSub
Close() error
}
var _ UniversalClient = (*Client)(nil)
var _ UniversalClient = (*ClusterClient)(nil)
var _ UniversalClient = (*Ring)(nil)
// NewUniversalClient returns a new multi client. The type of client returned depends
// on the following three conditions:
//
// 1. if a MasterName is passed a sentinel-backed FailoverClient will be returned
// 2. if the number of Addrs is two or more, a ClusterClient will be returned
// 3. otherwise, a single-node redis Client will be returned.
func NewUniversalClient(opts *UniversalOptions) UniversalClient {
if opts.MasterName != "" {
return NewFailoverClient(opts.Failover())
} else if len(opts.Addrs) > 1 {
return NewClusterClient(opts.Cluster())
}
return NewClient(opts.Simple())
}