mirror of
https://github.com/go-gitea/gitea.git
synced 2024-08-19 19:13:25 +02:00
* update github.com/PuerkitoBio/goquery * update github.com/alecthomas/chroma * update github.com/blevesearch/bleve/v2 * update github.com/caddyserver/certmagic * update github.com/go-enry/go-enry/v2 * update github.com/go-git/go-billy/v5 * update github.com/go-git/go-git/v5 * update github.com/go-redis/redis/v8 * update github.com/go-testfixtures/testfixtures/v3 * update github.com/jaytaylor/html2text * update github.com/json-iterator/go * update github.com/klauspost/compress * update github.com/markbates/goth * update github.com/mattn/go-isatty * update github.com/mholt/archiver/v3 * update github.com/microcosm-cc/bluemonday * update github.com/minio/minio-go/v7 * update github.com/prometheus/client_golang * update github.com/unrolled/render * update github.com/xanzy/go-gitlab * update github.com/yuin/goldmark * update github.com/yuin/goldmark-highlighting Co-authored-by: techknowlogick <techknowlogick@gitea.io>
784 lines
17 KiB
Go
Vendored
784 lines
17 KiB
Go
Vendored
package redis
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
"sync/atomic"
|
|
"time"
|
|
|
|
"github.com/go-redis/redis/v8/internal"
|
|
"github.com/go-redis/redis/v8/internal/pool"
|
|
"github.com/go-redis/redis/v8/internal/proto"
|
|
)
|
|
|
|
// Nil reply returned by Redis when key does not exist.
|
|
const Nil = proto.Nil
|
|
|
|
func SetLogger(logger internal.Logging) {
|
|
internal.Logger = logger
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
type Hook interface {
|
|
BeforeProcess(ctx context.Context, cmd Cmder) (context.Context, error)
|
|
AfterProcess(ctx context.Context, cmd Cmder) error
|
|
|
|
BeforeProcessPipeline(ctx context.Context, cmds []Cmder) (context.Context, error)
|
|
AfterProcessPipeline(ctx context.Context, cmds []Cmder) error
|
|
}
|
|
|
|
type hooks struct {
|
|
hooks []Hook
|
|
}
|
|
|
|
func (hs *hooks) lock() {
|
|
hs.hooks = hs.hooks[:len(hs.hooks):len(hs.hooks)]
|
|
}
|
|
|
|
func (hs hooks) clone() hooks {
|
|
clone := hs
|
|
clone.lock()
|
|
return clone
|
|
}
|
|
|
|
func (hs *hooks) AddHook(hook Hook) {
|
|
hs.hooks = append(hs.hooks, hook)
|
|
}
|
|
|
|
func (hs hooks) process(
|
|
ctx context.Context, cmd Cmder, fn func(context.Context, Cmder) error,
|
|
) error {
|
|
if len(hs.hooks) == 0 {
|
|
err := hs.withContext(ctx, func() error {
|
|
return fn(ctx, cmd)
|
|
})
|
|
cmd.SetErr(err)
|
|
return err
|
|
}
|
|
|
|
var hookIndex int
|
|
var retErr error
|
|
|
|
for ; hookIndex < len(hs.hooks) && retErr == nil; hookIndex++ {
|
|
ctx, retErr = hs.hooks[hookIndex].BeforeProcess(ctx, cmd)
|
|
if retErr != nil {
|
|
cmd.SetErr(retErr)
|
|
}
|
|
}
|
|
|
|
if retErr == nil {
|
|
retErr = hs.withContext(ctx, func() error {
|
|
return fn(ctx, cmd)
|
|
})
|
|
cmd.SetErr(retErr)
|
|
}
|
|
|
|
for hookIndex--; hookIndex >= 0; hookIndex-- {
|
|
if err := hs.hooks[hookIndex].AfterProcess(ctx, cmd); err != nil {
|
|
retErr = err
|
|
cmd.SetErr(retErr)
|
|
}
|
|
}
|
|
|
|
return retErr
|
|
}
|
|
|
|
func (hs hooks) processPipeline(
|
|
ctx context.Context, cmds []Cmder, fn func(context.Context, []Cmder) error,
|
|
) error {
|
|
if len(hs.hooks) == 0 {
|
|
err := hs.withContext(ctx, func() error {
|
|
return fn(ctx, cmds)
|
|
})
|
|
return err
|
|
}
|
|
|
|
var hookIndex int
|
|
var retErr error
|
|
|
|
for ; hookIndex < len(hs.hooks) && retErr == nil; hookIndex++ {
|
|
ctx, retErr = hs.hooks[hookIndex].BeforeProcessPipeline(ctx, cmds)
|
|
if retErr != nil {
|
|
setCmdsErr(cmds, retErr)
|
|
}
|
|
}
|
|
|
|
if retErr == nil {
|
|
retErr = hs.withContext(ctx, func() error {
|
|
return fn(ctx, cmds)
|
|
})
|
|
}
|
|
|
|
for hookIndex--; hookIndex >= 0; hookIndex-- {
|
|
if err := hs.hooks[hookIndex].AfterProcessPipeline(ctx, cmds); err != nil {
|
|
retErr = err
|
|
setCmdsErr(cmds, retErr)
|
|
}
|
|
}
|
|
|
|
return retErr
|
|
}
|
|
|
|
func (hs hooks) processTxPipeline(
|
|
ctx context.Context, cmds []Cmder, fn func(context.Context, []Cmder) error,
|
|
) error {
|
|
cmds = wrapMultiExec(ctx, cmds)
|
|
return hs.processPipeline(ctx, cmds, fn)
|
|
}
|
|
|
|
func (hs hooks) withContext(ctx context.Context, fn func() error) error {
|
|
return fn()
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
type baseClient struct {
|
|
opt *Options
|
|
connPool pool.Pooler
|
|
|
|
onClose func() error // hook called when client is closed
|
|
}
|
|
|
|
func newBaseClient(opt *Options, connPool pool.Pooler) *baseClient {
|
|
return &baseClient{
|
|
opt: opt,
|
|
connPool: connPool,
|
|
}
|
|
}
|
|
|
|
func (c *baseClient) clone() *baseClient {
|
|
clone := *c
|
|
return &clone
|
|
}
|
|
|
|
func (c *baseClient) withTimeout(timeout time.Duration) *baseClient {
|
|
opt := c.opt.clone()
|
|
opt.ReadTimeout = timeout
|
|
opt.WriteTimeout = timeout
|
|
|
|
clone := c.clone()
|
|
clone.opt = opt
|
|
|
|
return clone
|
|
}
|
|
|
|
func (c *baseClient) String() string {
|
|
return fmt.Sprintf("Redis<%s db:%d>", c.getAddr(), c.opt.DB)
|
|
}
|
|
|
|
func (c *baseClient) newConn(ctx context.Context) (*pool.Conn, error) {
|
|
cn, err := c.connPool.NewConn(ctx)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = c.initConn(ctx, cn)
|
|
if err != nil {
|
|
_ = c.connPool.CloseConn(cn)
|
|
return nil, err
|
|
}
|
|
|
|
return cn, nil
|
|
}
|
|
|
|
func (c *baseClient) getConn(ctx context.Context) (*pool.Conn, error) {
|
|
if c.opt.Limiter != nil {
|
|
err := c.opt.Limiter.Allow()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
cn, err := c._getConn(ctx)
|
|
if err != nil {
|
|
if c.opt.Limiter != nil {
|
|
c.opt.Limiter.ReportResult(err)
|
|
}
|
|
return nil, err
|
|
}
|
|
|
|
return cn, nil
|
|
}
|
|
|
|
func (c *baseClient) _getConn(ctx context.Context) (*pool.Conn, error) {
|
|
cn, err := c.connPool.Get(ctx)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if cn.Inited {
|
|
return cn, nil
|
|
}
|
|
|
|
if err := c.initConn(ctx, cn); err != nil {
|
|
c.connPool.Remove(ctx, cn, err)
|
|
if err := errors.Unwrap(err); err != nil {
|
|
return nil, err
|
|
}
|
|
return nil, err
|
|
}
|
|
|
|
return cn, nil
|
|
}
|
|
|
|
func (c *baseClient) initConn(ctx context.Context, cn *pool.Conn) error {
|
|
if cn.Inited {
|
|
return nil
|
|
}
|
|
cn.Inited = true
|
|
|
|
if c.opt.Password == "" &&
|
|
c.opt.DB == 0 &&
|
|
!c.opt.readOnly &&
|
|
c.opt.OnConnect == nil {
|
|
return nil
|
|
}
|
|
|
|
connPool := pool.NewSingleConnPool(c.connPool, cn)
|
|
conn := newConn(ctx, c.opt, connPool)
|
|
|
|
_, err := conn.Pipelined(ctx, func(pipe Pipeliner) error {
|
|
if c.opt.Password != "" {
|
|
if c.opt.Username != "" {
|
|
pipe.AuthACL(ctx, c.opt.Username, c.opt.Password)
|
|
} else {
|
|
pipe.Auth(ctx, c.opt.Password)
|
|
}
|
|
}
|
|
|
|
if c.opt.DB > 0 {
|
|
pipe.Select(ctx, c.opt.DB)
|
|
}
|
|
|
|
if c.opt.readOnly {
|
|
pipe.ReadOnly(ctx)
|
|
}
|
|
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if c.opt.OnConnect != nil {
|
|
return c.opt.OnConnect(ctx, conn)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (c *baseClient) releaseConn(ctx context.Context, cn *pool.Conn, err error) {
|
|
if c.opt.Limiter != nil {
|
|
c.opt.Limiter.ReportResult(err)
|
|
}
|
|
|
|
if isBadConn(err, false) {
|
|
c.connPool.Remove(ctx, cn, err)
|
|
} else {
|
|
c.connPool.Put(ctx, cn)
|
|
}
|
|
}
|
|
|
|
func (c *baseClient) withConn(
|
|
ctx context.Context, fn func(context.Context, *pool.Conn) error,
|
|
) error {
|
|
cn, err := c.getConn(ctx)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
defer func() {
|
|
c.releaseConn(ctx, cn, err)
|
|
}()
|
|
|
|
done := ctx.Done() //nolint:ifshort
|
|
|
|
if done == nil {
|
|
err = fn(ctx, cn)
|
|
return err
|
|
}
|
|
|
|
errc := make(chan error, 1)
|
|
go func() { errc <- fn(ctx, cn) }()
|
|
|
|
select {
|
|
case <-done:
|
|
_ = cn.Close()
|
|
// Wait for the goroutine to finish and send something.
|
|
<-errc
|
|
|
|
err = ctx.Err()
|
|
return err
|
|
case err = <-errc:
|
|
return err
|
|
}
|
|
}
|
|
|
|
func (c *baseClient) process(ctx context.Context, cmd Cmder) error {
|
|
var lastErr error
|
|
for attempt := 0; attempt <= c.opt.MaxRetries; attempt++ {
|
|
attempt := attempt
|
|
|
|
retry, err := c._process(ctx, cmd, attempt)
|
|
if err == nil || !retry {
|
|
return err
|
|
}
|
|
|
|
lastErr = err
|
|
}
|
|
return lastErr
|
|
}
|
|
|
|
func (c *baseClient) _process(ctx context.Context, cmd Cmder, attempt int) (bool, error) {
|
|
if attempt > 0 {
|
|
if err := internal.Sleep(ctx, c.retryBackoff(attempt)); err != nil {
|
|
return false, err
|
|
}
|
|
}
|
|
|
|
retryTimeout := uint32(1)
|
|
err := c.withConn(ctx, func(ctx context.Context, cn *pool.Conn) error {
|
|
err := cn.WithWriter(ctx, c.opt.WriteTimeout, func(wr *proto.Writer) error {
|
|
return writeCmd(wr, cmd)
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
err = cn.WithReader(ctx, c.cmdTimeout(cmd), cmd.readReply)
|
|
if err != nil {
|
|
if cmd.readTimeout() == nil {
|
|
atomic.StoreUint32(&retryTimeout, 1)
|
|
}
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
})
|
|
if err == nil {
|
|
return false, nil
|
|
}
|
|
|
|
retry := shouldRetry(err, atomic.LoadUint32(&retryTimeout) == 1)
|
|
return retry, err
|
|
}
|
|
|
|
func (c *baseClient) retryBackoff(attempt int) time.Duration {
|
|
return internal.RetryBackoff(attempt, c.opt.MinRetryBackoff, c.opt.MaxRetryBackoff)
|
|
}
|
|
|
|
func (c *baseClient) cmdTimeout(cmd Cmder) time.Duration {
|
|
if timeout := cmd.readTimeout(); timeout != nil {
|
|
t := *timeout
|
|
if t == 0 {
|
|
return 0
|
|
}
|
|
return t + 10*time.Second
|
|
}
|
|
return c.opt.ReadTimeout
|
|
}
|
|
|
|
// Close closes the client, releasing any open resources.
|
|
//
|
|
// It is rare to Close a Client, as the Client is meant to be
|
|
// long-lived and shared between many goroutines.
|
|
func (c *baseClient) Close() error {
|
|
var firstErr error
|
|
if c.onClose != nil {
|
|
if err := c.onClose(); err != nil {
|
|
firstErr = err
|
|
}
|
|
}
|
|
if err := c.connPool.Close(); err != nil && firstErr == nil {
|
|
firstErr = err
|
|
}
|
|
return firstErr
|
|
}
|
|
|
|
func (c *baseClient) getAddr() string {
|
|
return c.opt.Addr
|
|
}
|
|
|
|
func (c *baseClient) processPipeline(ctx context.Context, cmds []Cmder) error {
|
|
return c.generalProcessPipeline(ctx, cmds, c.pipelineProcessCmds)
|
|
}
|
|
|
|
func (c *baseClient) processTxPipeline(ctx context.Context, cmds []Cmder) error {
|
|
return c.generalProcessPipeline(ctx, cmds, c.txPipelineProcessCmds)
|
|
}
|
|
|
|
type pipelineProcessor func(context.Context, *pool.Conn, []Cmder) (bool, error)
|
|
|
|
func (c *baseClient) generalProcessPipeline(
|
|
ctx context.Context, cmds []Cmder, p pipelineProcessor,
|
|
) error {
|
|
err := c._generalProcessPipeline(ctx, cmds, p)
|
|
if err != nil {
|
|
setCmdsErr(cmds, err)
|
|
return err
|
|
}
|
|
return cmdsFirstErr(cmds)
|
|
}
|
|
|
|
func (c *baseClient) _generalProcessPipeline(
|
|
ctx context.Context, cmds []Cmder, p pipelineProcessor,
|
|
) error {
|
|
var lastErr error
|
|
for attempt := 0; attempt <= c.opt.MaxRetries; attempt++ {
|
|
if attempt > 0 {
|
|
if err := internal.Sleep(ctx, c.retryBackoff(attempt)); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
var canRetry bool
|
|
lastErr = c.withConn(ctx, func(ctx context.Context, cn *pool.Conn) error {
|
|
var err error
|
|
canRetry, err = p(ctx, cn, cmds)
|
|
return err
|
|
})
|
|
if lastErr == nil || !canRetry || !shouldRetry(lastErr, true) {
|
|
return lastErr
|
|
}
|
|
}
|
|
return lastErr
|
|
}
|
|
|
|
func (c *baseClient) pipelineProcessCmds(
|
|
ctx context.Context, cn *pool.Conn, cmds []Cmder,
|
|
) (bool, error) {
|
|
err := cn.WithWriter(ctx, c.opt.WriteTimeout, func(wr *proto.Writer) error {
|
|
return writeCmds(wr, cmds)
|
|
})
|
|
if err != nil {
|
|
return true, err
|
|
}
|
|
|
|
err = cn.WithReader(ctx, c.opt.ReadTimeout, func(rd *proto.Reader) error {
|
|
return pipelineReadCmds(rd, cmds)
|
|
})
|
|
return true, err
|
|
}
|
|
|
|
func pipelineReadCmds(rd *proto.Reader, cmds []Cmder) error {
|
|
for _, cmd := range cmds {
|
|
err := cmd.readReply(rd)
|
|
cmd.SetErr(err)
|
|
if err != nil && !isRedisError(err) {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (c *baseClient) txPipelineProcessCmds(
|
|
ctx context.Context, cn *pool.Conn, cmds []Cmder,
|
|
) (bool, error) {
|
|
err := cn.WithWriter(ctx, c.opt.WriteTimeout, func(wr *proto.Writer) error {
|
|
return writeCmds(wr, cmds)
|
|
})
|
|
if err != nil {
|
|
return true, err
|
|
}
|
|
|
|
err = cn.WithReader(ctx, c.opt.ReadTimeout, func(rd *proto.Reader) error {
|
|
statusCmd := cmds[0].(*StatusCmd)
|
|
// Trim multi and exec.
|
|
cmds = cmds[1 : len(cmds)-1]
|
|
|
|
err := txPipelineReadQueued(rd, statusCmd, cmds)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return pipelineReadCmds(rd, cmds)
|
|
})
|
|
return false, err
|
|
}
|
|
|
|
func wrapMultiExec(ctx context.Context, cmds []Cmder) []Cmder {
|
|
if len(cmds) == 0 {
|
|
panic("not reached")
|
|
}
|
|
cmdCopy := make([]Cmder, len(cmds)+2)
|
|
cmdCopy[0] = NewStatusCmd(ctx, "multi")
|
|
copy(cmdCopy[1:], cmds)
|
|
cmdCopy[len(cmdCopy)-1] = NewSliceCmd(ctx, "exec")
|
|
return cmdCopy
|
|
}
|
|
|
|
func txPipelineReadQueued(rd *proto.Reader, statusCmd *StatusCmd, cmds []Cmder) error {
|
|
// Parse queued replies.
|
|
if err := statusCmd.readReply(rd); err != nil {
|
|
return err
|
|
}
|
|
|
|
for range cmds {
|
|
if err := statusCmd.readReply(rd); err != nil && !isRedisError(err) {
|
|
return err
|
|
}
|
|
}
|
|
|
|
// Parse number of replies.
|
|
line, err := rd.ReadLine()
|
|
if err != nil {
|
|
if err == Nil {
|
|
err = TxFailedErr
|
|
}
|
|
return err
|
|
}
|
|
|
|
switch line[0] {
|
|
case proto.ErrorReply:
|
|
return proto.ParseErrorReply(line)
|
|
case proto.ArrayReply:
|
|
// ok
|
|
default:
|
|
err := fmt.Errorf("redis: expected '*', but got line %q", line)
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
// Client is a Redis client representing a pool of zero or more
|
|
// underlying connections. It's safe for concurrent use by multiple
|
|
// goroutines.
|
|
type Client struct {
|
|
*baseClient
|
|
cmdable
|
|
hooks
|
|
ctx context.Context
|
|
}
|
|
|
|
// NewClient returns a client to the Redis Server specified by Options.
|
|
func NewClient(opt *Options) *Client {
|
|
opt.init()
|
|
|
|
c := Client{
|
|
baseClient: newBaseClient(opt, newConnPool(opt)),
|
|
ctx: context.Background(),
|
|
}
|
|
c.cmdable = c.Process
|
|
|
|
return &c
|
|
}
|
|
|
|
func (c *Client) clone() *Client {
|
|
clone := *c
|
|
clone.cmdable = clone.Process
|
|
clone.hooks.lock()
|
|
return &clone
|
|
}
|
|
|
|
func (c *Client) WithTimeout(timeout time.Duration) *Client {
|
|
clone := c.clone()
|
|
clone.baseClient = c.baseClient.withTimeout(timeout)
|
|
return clone
|
|
}
|
|
|
|
func (c *Client) Context() context.Context {
|
|
return c.ctx
|
|
}
|
|
|
|
func (c *Client) WithContext(ctx context.Context) *Client {
|
|
if ctx == nil {
|
|
panic("nil context")
|
|
}
|
|
clone := c.clone()
|
|
clone.ctx = ctx
|
|
return clone
|
|
}
|
|
|
|
func (c *Client) Conn(ctx context.Context) *Conn {
|
|
return newConn(ctx, c.opt, pool.NewStickyConnPool(c.connPool))
|
|
}
|
|
|
|
// Do creates a Cmd from the args and processes the cmd.
|
|
func (c *Client) Do(ctx context.Context, args ...interface{}) *Cmd {
|
|
cmd := NewCmd(ctx, args...)
|
|
_ = c.Process(ctx, cmd)
|
|
return cmd
|
|
}
|
|
|
|
func (c *Client) Process(ctx context.Context, cmd Cmder) error {
|
|
return c.hooks.process(ctx, cmd, c.baseClient.process)
|
|
}
|
|
|
|
func (c *Client) processPipeline(ctx context.Context, cmds []Cmder) error {
|
|
return c.hooks.processPipeline(ctx, cmds, c.baseClient.processPipeline)
|
|
}
|
|
|
|
func (c *Client) processTxPipeline(ctx context.Context, cmds []Cmder) error {
|
|
return c.hooks.processTxPipeline(ctx, cmds, c.baseClient.processTxPipeline)
|
|
}
|
|
|
|
// Options returns read-only Options that were used to create the client.
|
|
func (c *Client) Options() *Options {
|
|
return c.opt
|
|
}
|
|
|
|
type PoolStats pool.Stats
|
|
|
|
// PoolStats returns connection pool stats.
|
|
func (c *Client) PoolStats() *PoolStats {
|
|
stats := c.connPool.Stats()
|
|
return (*PoolStats)(stats)
|
|
}
|
|
|
|
func (c *Client) Pipelined(ctx context.Context, fn func(Pipeliner) error) ([]Cmder, error) {
|
|
return c.Pipeline().Pipelined(ctx, fn)
|
|
}
|
|
|
|
func (c *Client) Pipeline() Pipeliner {
|
|
pipe := Pipeline{
|
|
ctx: c.ctx,
|
|
exec: c.processPipeline,
|
|
}
|
|
pipe.init()
|
|
return &pipe
|
|
}
|
|
|
|
func (c *Client) TxPipelined(ctx context.Context, fn func(Pipeliner) error) ([]Cmder, error) {
|
|
return c.TxPipeline().Pipelined(ctx, fn)
|
|
}
|
|
|
|
// TxPipeline acts like Pipeline, but wraps queued commands with MULTI/EXEC.
|
|
func (c *Client) TxPipeline() Pipeliner {
|
|
pipe := Pipeline{
|
|
ctx: c.ctx,
|
|
exec: c.processTxPipeline,
|
|
}
|
|
pipe.init()
|
|
return &pipe
|
|
}
|
|
|
|
func (c *Client) pubSub() *PubSub {
|
|
pubsub := &PubSub{
|
|
opt: c.opt,
|
|
|
|
newConn: func(ctx context.Context, channels []string) (*pool.Conn, error) {
|
|
return c.newConn(ctx)
|
|
},
|
|
closeConn: c.connPool.CloseConn,
|
|
}
|
|
pubsub.init()
|
|
return pubsub
|
|
}
|
|
|
|
// Subscribe subscribes the client to the specified channels.
|
|
// Channels can be omitted to create empty subscription.
|
|
// Note that this method does not wait on a response from Redis, so the
|
|
// subscription may not be active immediately. To force the connection to wait,
|
|
// you may call the Receive() method on the returned *PubSub like so:
|
|
//
|
|
// sub := client.Subscribe(queryResp)
|
|
// iface, err := sub.Receive()
|
|
// if err != nil {
|
|
// // handle error
|
|
// }
|
|
//
|
|
// // Should be *Subscription, but others are possible if other actions have been
|
|
// // taken on sub since it was created.
|
|
// switch iface.(type) {
|
|
// case *Subscription:
|
|
// // subscribe succeeded
|
|
// case *Message:
|
|
// // received first message
|
|
// case *Pong:
|
|
// // pong received
|
|
// default:
|
|
// // handle error
|
|
// }
|
|
//
|
|
// ch := sub.Channel()
|
|
func (c *Client) Subscribe(ctx context.Context, channels ...string) *PubSub {
|
|
pubsub := c.pubSub()
|
|
if len(channels) > 0 {
|
|
_ = pubsub.Subscribe(ctx, channels...)
|
|
}
|
|
return pubsub
|
|
}
|
|
|
|
// PSubscribe subscribes the client to the given patterns.
|
|
// Patterns can be omitted to create empty subscription.
|
|
func (c *Client) PSubscribe(ctx context.Context, channels ...string) *PubSub {
|
|
pubsub := c.pubSub()
|
|
if len(channels) > 0 {
|
|
_ = pubsub.PSubscribe(ctx, channels...)
|
|
}
|
|
return pubsub
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
type conn struct {
|
|
baseClient
|
|
cmdable
|
|
statefulCmdable
|
|
hooks // TODO: inherit hooks
|
|
}
|
|
|
|
// Conn is like Client, but its pool contains single connection.
|
|
type Conn struct {
|
|
*conn
|
|
ctx context.Context
|
|
}
|
|
|
|
func newConn(ctx context.Context, opt *Options, connPool pool.Pooler) *Conn {
|
|
c := Conn{
|
|
conn: &conn{
|
|
baseClient: baseClient{
|
|
opt: opt,
|
|
connPool: connPool,
|
|
},
|
|
},
|
|
ctx: ctx,
|
|
}
|
|
c.cmdable = c.Process
|
|
c.statefulCmdable = c.Process
|
|
return &c
|
|
}
|
|
|
|
func (c *Conn) Process(ctx context.Context, cmd Cmder) error {
|
|
return c.hooks.process(ctx, cmd, c.baseClient.process)
|
|
}
|
|
|
|
func (c *Conn) processPipeline(ctx context.Context, cmds []Cmder) error {
|
|
return c.hooks.processPipeline(ctx, cmds, c.baseClient.processPipeline)
|
|
}
|
|
|
|
func (c *Conn) processTxPipeline(ctx context.Context, cmds []Cmder) error {
|
|
return c.hooks.processTxPipeline(ctx, cmds, c.baseClient.processTxPipeline)
|
|
}
|
|
|
|
func (c *Conn) Pipelined(ctx context.Context, fn func(Pipeliner) error) ([]Cmder, error) {
|
|
return c.Pipeline().Pipelined(ctx, fn)
|
|
}
|
|
|
|
func (c *Conn) Pipeline() Pipeliner {
|
|
pipe := Pipeline{
|
|
ctx: c.ctx,
|
|
exec: c.processPipeline,
|
|
}
|
|
pipe.init()
|
|
return &pipe
|
|
}
|
|
|
|
func (c *Conn) TxPipelined(ctx context.Context, fn func(Pipeliner) error) ([]Cmder, error) {
|
|
return c.TxPipeline().Pipelined(ctx, fn)
|
|
}
|
|
|
|
// TxPipeline acts like Pipeline, but wraps queued commands with MULTI/EXEC.
|
|
func (c *Conn) TxPipeline() Pipeliner {
|
|
pipe := Pipeline{
|
|
ctx: c.ctx,
|
|
exec: c.processTxPipeline,
|
|
}
|
|
pipe.init()
|
|
return &pipe
|
|
}
|