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Update Redis client used for bucket notifications (#7213)

Browse Source 
Current Redis client used https://github.com/garyburd/redigo/
has been archived and further development is done at
https://github.com/gomodule/redigo

This commit updates the client library accordingly.

Fixes #6392
This commit is contained in:
Nitish Tiwari 2019-02-11 19:06:27 +05:30 committed by GitHub
parent a8cd70f3e5
commit 13c3b8afe2
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
19 changed files with 1379 additions and 624 deletions
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2
pkg/event/target/redis.go
View File

@ -23,7 +23,7 @@ import (
"strings"
"time"
"github.com/garyburd/redigo/redis"
"github.com/gomodule/redigo/redis"
"github.com/minio/minio/pkg/event"
xnet "github.com/minio/minio/pkg/net"
)

416
vendor/github.com/garyburd/redigo/redis/pool.go generated vendored
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@ -1,416 +0,0 @@
// Copyright 2012 Gary Burd
//
// 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 redis
import (
"bytes"
"container/list"
"crypto/rand"
"crypto/sha1"
"errors"
"io"
"strconv"
"sync"
"time"
"github.com/garyburd/redigo/internal"
)
var nowFunc = time.Now // for testing
// ErrPoolExhausted is returned from a pool connection method (Do, Send,
// Receive, Flush, Err) when the maximum number of database connections in the
// pool has been reached.
var ErrPoolExhausted = errors.New("redigo: connection pool exhausted")
var (
errPoolClosed = errors.New("redigo: connection pool closed")
errConnClosed = errors.New("redigo: connection closed")
)
// Pool maintains a pool of connections. The application calls the Get method
// to get a connection from the pool and the connection's Close method to
// return the connection's resources to the pool.
//
// The following example shows how to use a pool in a web application. The
// application creates a pool at application startup and makes it available to
// request handlers using a package level variable. The pool configuration used
// here is an example, not a recommendation.
//
// func newPool(addr string) *redis.Pool {
// return &redis.Pool{
// MaxIdle: 3,
// IdleTimeout: 240 * time.Second,
// Dial: func () (redis.Conn, error) { return redis.Dial("tcp", addr) },
// }
// }
//
// var (
// pool *redis.Pool
// redisServer = flag.String("redisServer", ":6379", "")
// )
//
// func main() {
// flag.Parse()
// pool = newPool(*redisServer)
// ...
// }
//
// A request handler gets a connection from the pool and closes the connection
// when the handler is done:
//
// func serveHome(w http.ResponseWriter, r *http.Request) {
// conn := pool.Get()
// defer conn.Close()
// ...
// }
//
// Use the Dial function to authenticate connections with the AUTH command or
// select a database with the SELECT command:
//
// pool := &redis.Pool{
// // Other pool configuration not shown in this example.
// Dial: func () (redis.Conn, error) {
// c, err := redis.Dial("tcp", server)
// if err != nil {
// return nil, err
// }
// if _, err := c.Do("AUTH", password); err != nil {
// c.Close()
// return nil, err
// }
// if _, err := c.Do("SELECT", db); err != nil {
// c.Close()
// return nil, err
// }
// return c, nil
// }
// }
//
// Use the TestOnBorrow function to check the health of an idle connection
// before the connection is returned to the application. This example PINGs
// connections that have been idle more than a minute:
//
// pool := &redis.Pool{
// // Other pool configuration not shown in this example.
// TestOnBorrow: func(c redis.Conn, t time.Time) error {
// if time.Since(t) < time.Minute {
// return nil
// }
// _, err := c.Do("PING")
// return err
// },
// }
//
type Pool struct {
// Dial is an application supplied function for creating and configuring a
// connection.
//
// The connection returned from Dial must not be in a special state
// (subscribed to pubsub channel, transaction started, ...).
Dial func() (Conn, error)
// TestOnBorrow is an optional application supplied function for checking
// the health of an idle connection before the connection is used again by
// the application. Argument t is the time that the connection was returned
// to the pool. If the function returns an error, then the connection is
// closed.
TestOnBorrow func(c Conn, t time.Time) error
// Maximum number of idle connections in the pool.
MaxIdle int
// Maximum number of connections allocated by the pool at a given time.
// When zero, there is no limit on the number of connections in the pool.
MaxActive int
// Close connections after remaining idle for this duration. If the value
// is zero, then idle connections are not closed. Applications should set
// the timeout to a value less than the server's timeout.
IdleTimeout time.Duration
// If Wait is true and the pool is at the MaxActive limit, then Get() waits
// for a connection to be returned to the pool before returning.
Wait bool
// mu protects fields defined below.
mu sync.Mutex
cond *sync.Cond
closed bool
active int
// Stack of idleConn with most recently used at the front.
idle list.List
}
type idleConn struct {
c Conn
t time.Time
}
// NewPool creates a new pool.
//
// Deprecated: Initialize the Pool directory as shown in the example.
func NewPool(newFn func() (Conn, error), maxIdle int) *Pool {
return &Pool{Dial: newFn, MaxIdle: maxIdle}
}
// Get gets a connection. The application must close the returned connection.
// This method always returns a valid connection so that applications can defer
// error handling to the first use of the connection. If there is an error
// getting an underlying connection, then the connection Err, Do, Send, Flush
// and Receive methods return that error.
func (p *Pool) Get() Conn {
c, err := p.get()
if err != nil {
return errorConnection{err}
}
return &pooledConnection{p: p, c: c}
}
// ActiveCount returns the number of active connections in the pool.
func (p *Pool) ActiveCount() int {
p.mu.Lock()
active := p.active
p.mu.Unlock()
return active
}
// Close releases the resources used by the pool.
func (p *Pool) Close() error {
p.mu.Lock()
idle := p.idle
p.idle.Init()
p.closed = true
p.active -= idle.Len()
if p.cond != nil {
p.cond.Broadcast()
}
p.mu.Unlock()
for e := idle.Front(); e != nil; e = e.Next() {
e.Value.(idleConn).c.Close()
}
return nil
}
// release decrements the active count and signals waiters. The caller must
// hold p.mu during the call.
func (p *Pool) release() {
p.active -= 1
if p.cond != nil {
p.cond.Signal()
}
}
// get prunes stale connections and returns a connection from the idle list or
// creates a new connection.
func (p *Pool) get() (Conn, error) {
p.mu.Lock()
// Prune stale connections.
if timeout := p.IdleTimeout; timeout > 0 {
for i, n := 0, p.idle.Len(); i < n; i++ {
e := p.idle.Back()
if e == nil {
break
}
ic := e.Value.(idleConn)
if ic.t.Add(timeout).After(nowFunc()) {
break
}
p.idle.Remove(e)
p.release()
p.mu.Unlock()
ic.c.Close()
p.mu.Lock()
}
}
for {
// Get idle connection.
for i, n := 0, p.idle.Len(); i < n; i++ {
e := p.idle.Front()
if e == nil {
break
}
ic := e.Value.(idleConn)
p.idle.Remove(e)
test := p.TestOnBorrow
p.mu.Unlock()
if test == nil || test(ic.c, ic.t) == nil {
return ic.c, nil
}
ic.c.Close()
p.mu.Lock()
p.release()
}
// Check for pool closed before dialing a new connection.
if p.closed {
p.mu.Unlock()
return nil, errors.New("redigo: get on closed pool")
}
// Dial new connection if under limit.
if p.MaxActive == 0 || p.active < p.MaxActive {
dial := p.Dial
p.active += 1
p.mu.Unlock()
c, err := dial()
if err != nil {
p.mu.Lock()
p.release()
p.mu.Unlock()
c = nil
}
return c, err
}
if !p.Wait {
p.mu.Unlock()
return nil, ErrPoolExhausted
}
if p.cond == nil {
p.cond = sync.NewCond(&p.mu)
}
p.cond.Wait()
}
}
func (p *Pool) put(c Conn, forceClose bool) error {
err := c.Err()
p.mu.Lock()
if !p.closed && err == nil && !forceClose {
p.idle.PushFront(idleConn{t: nowFunc(), c: c})
if p.idle.Len() > p.MaxIdle {
c = p.idle.Remove(p.idle.Back()).(idleConn).c
} else {
c = nil
}
}
if c == nil {
if p.cond != nil {
p.cond.Signal()
}
p.mu.Unlock()
return nil
}
p.release()
p.mu.Unlock()
return c.Close()
}
type pooledConnection struct {
p *Pool
c Conn
state int
}
var (
sentinel []byte
sentinelOnce sync.Once
)
func initSentinel() {
p := make([]byte, 64)
if _, err := rand.Read(p); err == nil {
sentinel = p
} else {
h := sha1.New()
io.WriteString(h, "Oops, rand failed. Use time instead.")
io.WriteString(h, strconv.FormatInt(time.Now().UnixNano(), 10))
sentinel = h.Sum(nil)
}
}
func (pc *pooledConnection) Close() error {
c := pc.c
if _, ok := c.(errorConnection); ok {
return nil
}
pc.c = errorConnection{errConnClosed}
if pc.state&internal.MultiState != 0 {
c.Send("DISCARD")
pc.state &^= (internal.MultiState | internal.WatchState)
} else if pc.state&internal.WatchState != 0 {
c.Send("UNWATCH")
pc.state &^= internal.WatchState
}
if pc.state&internal.SubscribeState != 0 {
c.Send("UNSUBSCRIBE")
c.Send("PUNSUBSCRIBE")
// To detect the end of the message stream, ask the server to echo
// a sentinel value and read until we see that value.
sentinelOnce.Do(initSentinel)
c.Send("ECHO", sentinel)
c.Flush()
for {
p, err := c.Receive()
if err != nil {
break
}
if p, ok := p.([]byte); ok && bytes.Equal(p, sentinel) {
pc.state &^= internal.SubscribeState
break
}
}
}
c.Do("")
pc.p.put(c, pc.state != 0)
return nil
}
func (pc *pooledConnection) Err() error {
return pc.c.Err()
}
func (pc *pooledConnection) Do(commandName string, args ...interface{}) (reply interface{}, err error) {
ci := internal.LookupCommandInfo(commandName)
pc.state = (pc.state | ci.Set) &^ ci.Clear
return pc.c.Do(commandName, args...)
}
func (pc *pooledConnection) Send(commandName string, args ...interface{}) error {
ci := internal.LookupCommandInfo(commandName)
pc.state = (pc.state | ci.Set) &^ ci.Clear
return pc.c.Send(commandName, args...)
}
func (pc *pooledConnection) Flush() error {
return pc.c.Flush()
}
func (pc *pooledConnection) Receive() (reply interface{}, err error) {
return pc.c.Receive()
}
type errorConnection struct{ err error }
func (ec errorConnection) Do(string, ...interface{}) (interface{}, error) { return nil, ec.err }
func (ec errorConnection) Send(string, ...interface{}) error { return ec.err }
func (ec errorConnection) Err() error { return ec.err }
func (ec errorConnection) Close() error { return ec.err }
func (ec errorConnection) Flush() error { return ec.err }
func (ec errorConnection) Receive() (interface{}, error) { return nil, ec.err }

41
vendor/github.com/garyburd/redigo/redis/redis.go generated vendored
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@ -1,41 +0,0 @@
// Copyright 2012 Gary Burd
//
// 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 redis
// Error represents an error returned in a command reply.
type Error string
func (err Error) Error() string { return string(err) }
// Conn represents a connection to a Redis server.
type Conn interface {
// Close closes the connection.
Close() error
// Err returns a non-nil value when the connection is not usable.
Err() error
// Do sends a command to the server and returns the received reply.
Do(commandName string, args ...interface{}) (reply interface{}, err error)
// Send writes the command to the client's output buffer.
Send(commandName string, args ...interface{}) error
// Flush flushes the output buffer to the Redis server.
Flush() error
// Receive receives a single reply from the Redis server
Receive() (reply interface{}, err error)
}

175
vendor/github.com/gomodule/redigo/LICENSE generated vendored Normal file
View File

@ -0,0 +1,175 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
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"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
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"Contributor" shall mean Licensor and any individual or Legal Entity
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2. Grant of Copyright License. Subject to the terms and conditions of
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You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
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the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
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9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
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incurred by, or claims asserted against, such Contributor by reason
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55
vendor/github.com/gomodule/redigo/redis/commandinfo.go generated vendored Normal file
View File

@ -0,0 +1,55 @@
// Copyright 2014 Gary Burd
//
// 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 redis
import (
"strings"
)
const (
connectionWatchState = 1 << iota
connectionMultiState
connectionSubscribeState
connectionMonitorState
)
type commandInfo struct {
// Set or Clear these states on connection.
Set, Clear int
}
var commandInfos = map[string]commandInfo{
"WATCH": {Set: connectionWatchState},
"UNWATCH": {Clear: connectionWatchState},
"MULTI": {Set: connectionMultiState},
"EXEC": {Clear: connectionWatchState | connectionMultiState},
"DISCARD": {Clear: connectionWatchState | connectionMultiState},
"PSUBSCRIBE": {Set: connectionSubscribeState},
"SUBSCRIBE": {Set: connectionSubscribeState},
"MONITOR": {Set: connectionMonitorState},
}
func init() {
for n, ci := range commandInfos {
commandInfos[strings.ToLower(n)] = ci
}
}
func lookupCommandInfo(commandName string) commandInfo {
if ci, ok := commandInfos[commandName]; ok {
return ci
}
return commandInfos[strings.ToUpper(commandName)]
}

190
vendor/github.com/garyburd/redigo/redis/conn.go → vendor/github.com/gomodule/redigo/redis/conn.go generated vendored
View File

@ -29,9 +29,12 @@ import (
"time"
)
var (
_ ConnWithTimeout = (*conn)(nil)
)
// conn is the low-level implementation of Conn
type conn struct {
// Shared
mu sync.Mutex
pending int
@ -73,10 +76,12 @@ type DialOption struct {
type dialOptions struct {
readTimeout time.Duration
writeTimeout time.Duration
dialer *net.Dialer
dial func(network, addr string) (net.Conn, error)
db int
password string
dialTLS bool
clientName string
useTLS bool
skipVerify bool
tlsConfig *tls.Config
}
@ -95,17 +100,27 @@ func DialWriteTimeout(d time.Duration) DialOption {
}}
}
// DialConnectTimeout specifies the timeout for connecting to the Redis server.
// DialConnectTimeout specifies the timeout for connecting to the Redis server when
// no DialNetDial option is specified.
func DialConnectTimeout(d time.Duration) DialOption {
return DialOption{func(do *dialOptions) {
dialer := net.Dialer{Timeout: d}
do.dial = dialer.Dial
do.dialer.Timeout = d
}}
}
// DialKeepAlive specifies the keep-alive period for TCP connections to the Redis server
// when no DialNetDial option is specified.
// If zero, keep-alives are not enabled. If no DialKeepAlive option is specified then
// the default of 5 minutes is used to ensure that half-closed TCP sessions are detected.
func DialKeepAlive(d time.Duration) DialOption {
return DialOption{func(do *dialOptions) {
do.dialer.KeepAlive = d
}}
}
// DialNetDial specifies a custom dial function for creating TCP
// connections. If this option is left out, then net.Dial is
// used. DialNetDial overrides DialConnectTimeout.
// connections, otherwise a net.Dialer customized via the other options is used.
// DialNetDial overrides DialConnectTimeout and DialKeepAlive.
func DialNetDial(dial func(network, addr string) (net.Conn, error)) DialOption {
return DialOption{func(do *dialOptions) {
do.dial = dial
@ -127,6 +142,14 @@ func DialPassword(password string) DialOption {
}}
}
// DialClientName specifies a client name to be used
// by the Redis server connection.
func DialClientName(name string) DialOption {
return DialOption{func(do *dialOptions) {
do.clientName = name
}}
}
// DialTLSConfig specifies the config to use when a TLS connection is dialed.
// Has no effect when not dialing a TLS connection.
func DialTLSConfig(c *tls.Config) DialOption {
@ -135,31 +158,49 @@ func DialTLSConfig(c *tls.Config) DialOption {
}}
}
// DialTLSSkipVerify to disable server name verification when connecting
// over TLS. Has no effect when not dialing a TLS connection.
// DialTLSSkipVerify disables server name verification when connecting over
// TLS. Has no effect when not dialing a TLS connection.
func DialTLSSkipVerify(skip bool) DialOption {
return DialOption{func(do *dialOptions) {
do.skipVerify = skip
}}
}
// DialUseTLS specifies whether TLS should be used when connecting to the
// server. This option is ignore by DialURL.
func DialUseTLS(useTLS bool) DialOption {
return DialOption{func(do *dialOptions) {
do.useTLS = useTLS
}}
}
// Dial connects to the Redis server at the given network and
// address using the specified options.
func Dial(network, address string, options ...DialOption) (Conn, error) {
do := dialOptions{
dial: net.Dial,
dialer: &net.Dialer{
KeepAlive: time.Minute * 5,
},
}
for _, option := range options {
option.f(&do)
}
if do.dial == nil {
do.dial = do.dialer.Dial
}
netConn, err := do.dial(network, address)
if err != nil {
return nil, err
}
if do.dialTLS {
tlsConfig := cloneTLSClientConfig(do.tlsConfig, do.skipVerify)
if do.useTLS {
var tlsConfig *tls.Config
if do.tlsConfig == nil {
tlsConfig = &tls.Config{InsecureSkipVerify: do.skipVerify}
} else {
tlsConfig = cloneTLSConfig(do.tlsConfig)
}
if tlsConfig.ServerName == "" {
host, _, err := net.SplitHostPort(address)
if err != nil {
@ -192,6 +233,13 @@ func Dial(network, address string, options ...DialOption) (Conn, error) {
}
}
if do.clientName != "" {
if _, err := c.Do("CLIENT", "SETNAME", do.clientName); err != nil {
netConn.Close()
return nil, err
}
}
if do.db != 0 {
if _, err := c.Do("SELECT", do.db); err != nil {
netConn.Close()
@ -202,10 +250,6 @@ func Dial(network, address string, options ...DialOption) (Conn, error) {
return c, nil
}
func dialTLS(do *dialOptions) {
do.dialTLS = true
}
var pathDBRegexp = regexp.MustCompile(`/(\d*)\z`)
// DialURL connects to a Redis server at the given URL using the Redis
@ -257,9 +301,7 @@ func DialURL(rawurl string, options ...DialOption) (Conn, error) {
return nil, fmt.Errorf("invalid database: %s", u.Path[1:])
}
if u.Scheme == "rediss" {
options = append([]DialOption{{dialTLS}}, options...)
}
options = append(options, DialUseTLS(u.Scheme == "rediss"))
return Dial("tcp", address, options...)
}
@ -344,39 +386,55 @@ func (c *conn) writeFloat64(n float64) error {
return c.writeBytes(strconv.AppendFloat(c.numScratch[:0], n, 'g', -1, 64))
}
func (c *conn) writeCommand(cmd string, args []interface{}) (err error) {
func (c *conn) writeCommand(cmd string, args []interface{}) error {
c.writeLen('*', 1+len(args))
err = c.writeString(cmd)
if err := c.writeString(cmd); err != nil {
return err
}
for _, arg := range args {
if err != nil {
break
}
switch arg := arg.(type) {
case string:
err = c.writeString(arg)
case []byte:
err = c.writeBytes(arg)
case int:
err = c.writeInt64(int64(arg))
case int64:
err = c.writeInt64(arg)
case float64:
err = c.writeFloat64(arg)
case bool:
if arg {
err = c.writeString("1")
} else {
err = c.writeString("0")
}
case nil:
err = c.writeString("")
default:
var buf bytes.Buffer
fmt.Fprint(&buf, arg)
err = c.writeBytes(buf.Bytes())
if err := c.writeArg(arg, true); err != nil {
return err
}
}
return err
return nil
}
func (c *conn) writeArg(arg interface{}, argumentTypeOK bool) (err error) {
switch arg := arg.(type) {
case string:
return c.writeString(arg)
case []byte:
return c.writeBytes(arg)
case int:
return c.writeInt64(int64(arg))
case int64:
return c.writeInt64(arg)
case float64:
return c.writeFloat64(arg)
case bool:
if arg {
return c.writeString("1")
} else {
return c.writeString("0")
}
case nil:
return c.writeString("")
case Argument:
if argumentTypeOK {
return c.writeArg(arg.RedisArg(), false)
}
// See comment in default clause below.
var buf bytes.Buffer
fmt.Fprint(&buf, arg)
return c.writeBytes(buf.Bytes())
default:
// This default clause is intended to handle builtin numeric types.
// The function should return an error for other types, but this is not
// done for compatibility with previous versions of the package.
var buf bytes.Buffer
fmt.Fprint(&buf, arg)
return c.writeBytes(buf.Bytes())
}
}
type protocolError string
@ -385,10 +443,21 @@ func (pe protocolError) Error() string {
return fmt.Sprintf("redigo: %s (possible server error or unsupported concurrent read by application)", string(pe))
}
// readLine reads a line of input from the RESP stream.
func (c *conn) readLine() ([]byte, error) {
// To avoid allocations, attempt to read the line using ReadSlice. This
// call typically succeeds. The known case where the call fails is when
// reading the output from the MONITOR command.
p, err := c.br.ReadSlice('\n')
if err == bufio.ErrBufferFull {
return nil, protocolError("long response line")
// The line does not fit in the bufio.Reader's buffer. Fall back to
// allocating a buffer for the line.
buf := append([]byte{}, p...)
for err == bufio.ErrBufferFull {
p, err = c.br.ReadSlice('\n')
buf = append(buf, p...)
}
p = buf
}
if err != nil {
return nil, err
@ -538,10 +607,17 @@ func (c *conn) Flush() error {
return nil
}
func (c *conn) Receive() (reply interface{}, err error) {
if c.readTimeout != 0 {
c.conn.SetReadDeadline(time.Now().Add(c.readTimeout))
func (c *conn) Receive() (interface{}, error) {
return c.ReceiveWithTimeout(c.readTimeout)
}
func (c *conn) ReceiveWithTimeout(timeout time.Duration) (reply interface{}, err error) {
var deadline time.Time
if timeout != 0 {
deadline = time.Now().Add(timeout)
}
c.conn.SetReadDeadline(deadline)
if reply, err = c.readReply(); err != nil {
return nil, c.fatal(err)
}
@ -564,6 +640,10 @@ func (c *conn) Receive() (reply interface{}, err error) {
}
func (c *conn) Do(cmd string, args ...interface{}) (interface{}, error) {
return c.DoWithTimeout(c.readTimeout, cmd, args...)
}
func (c *conn) DoWithTimeout(readTimeout time.Duration, cmd string, args ...interface{}) (interface{}, error) {
c.mu.Lock()
pending := c.pending
c.pending = 0
@ -587,9 +667,11 @@ func (c *conn) Do(cmd string, args ...interface{}) (interface{}, error) {
return nil, c.fatal(err)
}
if c.readTimeout != 0 {
c.conn.SetReadDeadline(time.Now().Add(c.readTimeout))
var deadline time.Time
if readTimeout != 0 {
deadline = time.Now().Add(readTimeout)
}
c.conn.SetReadDeadline(deadline)
if cmd == "" {
reply := make([]interface{}, pending)

8
vendor/github.com/garyburd/redigo/redis/doc.go → vendor/github.com/gomodule/redigo/redis/doc.go generated vendored
View File

@ -14,7 +14,7 @@
// Package redis is a client for the Redis database.
//
// The Redigo FAQ (https://github.com/garyburd/redigo/wiki/FAQ) contains more
// The Redigo FAQ (https://github.com/gomodule/redigo/wiki/FAQ) contains more
// documentation about this package.
//
// Connections
@ -38,7 +38,7 @@
//
// n, err := conn.Do("APPEND", "key", "value")
//
// The Do method converts command arguments to binary strings for transmission
// The Do method converts command arguments to bulk strings for transmission
// to the server as follows:
//
// Go Type Conversion
@ -48,7 +48,7 @@
// float64 strconv.FormatFloat(v, 'g', -1, 64)
// bool true -> "1", false -> "0"
// nil ""
// all other types fmt.Print(v)
// all other types fmt.Fprint(w, v)
//
// Redis command reply types are represented using the following Go types:
//
@ -174,4 +174,4 @@
// non-recoverable error such as a network error or protocol parsing error. If
// Err() returns a non-nil value, then the connection is not usable and should
// be closed.
package redis // import "github.com/garyburd/redigo/redis"
package redis

6
vendor/github.com/garyburd/redigo/redis/pre_go17.go → vendor/github.com/gomodule/redigo/redis/go16.go generated vendored
View File

@ -4,11 +4,7 @@ package redis
import "crypto/tls"
// similar cloneTLSClientConfig in the stdlib, but also honor skipVerify for the nil case
func cloneTLSClientConfig(cfg *tls.Config, skipVerify bool) *tls.Config {
if cfg == nil {
return &tls.Config{InsecureSkipVerify: skipVerify}
}
func cloneTLSConfig(cfg *tls.Config) *tls.Config {
return &tls.Config{
Rand: cfg.Rand,
Time: cfg.Time,

8
vendor/github.com/garyburd/redigo/redis/go17.go → vendor/github.com/gomodule/redigo/redis/go17.go generated vendored
View File

@ -1,14 +1,10 @@
// +build go1.7
// +build go1.7,!go1.8
package redis
import "crypto/tls"
// similar cloneTLSClientConfig in the stdlib, but also honor skipVerify for the nil case
func cloneTLSClientConfig(cfg *tls.Config, skipVerify bool) *tls.Config {
if cfg == nil {
return &tls.Config{InsecureSkipVerify: skipVerify}
}
func cloneTLSConfig(cfg *tls.Config) *tls.Config {
return &tls.Config{
Rand: cfg.Rand,
Time: cfg.Time,

9
vendor/github.com/gomodule/redigo/redis/go18.go generated vendored Normal file
View File

@ -0,0 +1,9 @@
// +build go1.8
package redis
import "crypto/tls"
func cloneTLSConfig(cfg *tls.Config) *tls.Config {
return cfg.Clone()
}

31
vendor/github.com/garyburd/redigo/redis/log.go → vendor/github.com/gomodule/redigo/redis/log.go generated vendored
View File

@ -18,6 +18,11 @@ import (
"bytes"
"fmt"
"log"
"time"
)
var (
_ ConnWithTimeout = (*loggingConn)(nil)
)
// NewLoggingConn returns a logging wrapper around a connection.
@ -25,13 +30,22 @@ func NewLoggingConn(conn Conn, logger *log.Logger, prefix string) Conn {
if prefix != "" {
prefix = prefix + "."
}
return &loggingConn{conn, logger, prefix}
return &loggingConn{conn, logger, prefix, nil}
}
//NewLoggingConnFilter returns a logging wrapper around a connection and a filter function.
func NewLoggingConnFilter(conn Conn, logger *log.Logger, prefix string, skip func(cmdName string) bool) Conn {
if prefix != "" {
prefix = prefix + "."
}
return &loggingConn{conn, logger, prefix, skip}
}
type loggingConn struct {
Conn
logger *log.Logger
prefix string
skip func(cmdName string) bool
}
func (c *loggingConn) Close() error {
@ -80,6 +94,9 @@ func (c *loggingConn) printValue(buf *bytes.Buffer, v interface{}) {
}
func (c *loggingConn) print(method, commandName string, args []interface{}, reply interface{}, err error) {
if c.skip != nil && c.skip(commandName) {
return
}
var buf bytes.Buffer
fmt.Fprintf(&buf, "%s%s(", c.prefix, method)
if method != "Receive" {
@ -104,6 +121,12 @@ func (c *loggingConn) Do(commandName string, args ...interface{}) (interface{},
return reply, err
}
func (c *loggingConn) DoWithTimeout(timeout time.Duration, commandName string, args ...interface{}) (interface{}, error) {
reply, err := DoWithTimeout(c.Conn, timeout, commandName, args...)
c.print("DoWithTimeout", commandName, args, reply, err)
return reply, err
}
func (c *loggingConn) Send(commandName string, args ...interface{}) error {
err := c.Conn.Send(commandName, args...)
c.print("Send", commandName, args, nil, err)
@ -115,3 +138,9 @@ func (c *loggingConn) Receive() (interface{}, error) {
c.print("Receive", "", nil, reply, err)
return reply, err
}
func (c *loggingConn) ReceiveWithTimeout(timeout time.Duration) (interface{}, error) {
reply, err := ReceiveWithTimeout(c.Conn, timeout)
c.print("ReceiveWithTimeout", "", nil, reply, err)
return reply, err
}

560
vendor/github.com/gomodule/redigo/redis/pool.go generated vendored Normal file
View File

@ -0,0 +1,560 @@
// Copyright 2012 Gary Burd
//
// 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 redis
import (
"bytes"
"crypto/rand"
"crypto/sha1"
"errors"
"io"
"strconv"
"sync"
"sync/atomic"
"time"
)
var (
_ ConnWithTimeout = (*activeConn)(nil)
_ ConnWithTimeout = (*errorConn)(nil)
)
var nowFunc = time.Now // for testing
// ErrPoolExhausted is returned from a pool connection method (Do, Send,
// Receive, Flush, Err) when the maximum number of database connections in the
// pool has been reached.
var ErrPoolExhausted = errors.New("redigo: connection pool exhausted")
var (
errPoolClosed = errors.New("redigo: connection pool closed")
errConnClosed = errors.New("redigo: connection closed")
)
// Pool maintains a pool of connections. The application calls the Get method
// to get a connection from the pool and the connection's Close method to
// return the connection's resources to the pool.
//
// The following example shows how to use a pool in a web application. The
// application creates a pool at application startup and makes it available to
// request handlers using a package level variable. The pool configuration used
// here is an example, not a recommendation.
//
// func newPool(addr string) *redis.Pool {
// return &redis.Pool{
// MaxIdle: 3,
// IdleTimeout: 240 * time.Second,
// Dial: func () (redis.Conn, error) { return redis.Dial("tcp", addr) },
// }
// }
//
// var (
// pool *redis.Pool
// redisServer = flag.String("redisServer", ":6379", "")
// )
//
// func main() {
// flag.Parse()
// pool = newPool(*redisServer)
// ...
// }
//
// A request handler gets a connection from the pool and closes the connection
// when the handler is done:
//
// func serveHome(w http.ResponseWriter, r *http.Request) {
// conn := pool.Get()
// defer conn.Close()
// ...
// }
//
// Use the Dial function to authenticate connections with the AUTH command or
// select a database with the SELECT command:
//
// pool := &redis.Pool{
// // Other pool configuration not shown in this example.
// Dial: func () (redis.Conn, error) {
// c, err := redis.Dial("tcp", server)
// if err != nil {
// return nil, err
// }
// if _, err := c.Do("AUTH", password); err != nil {
// c.Close()
// return nil, err
// }
// if _, err := c.Do("SELECT", db); err != nil {
// c.Close()
// return nil, err
// }
// return c, nil
// },
// }
//
// Use the TestOnBorrow function to check the health of an idle connection
// before the connection is returned to the application. This example PINGs
// connections that have been idle more than a minute:
//
// pool := &redis.Pool{
// // Other pool configuration not shown in this example.
// TestOnBorrow: func(c redis.Conn, t time.Time) error {
// if time.Since(t) < time.Minute {
// return nil
// }
// _, err := c.Do("PING")
// return err
// },
// }
//
type Pool struct {
// Dial is an application supplied function for creating and configuring a
// connection.
//
// The connection returned from Dial must not be in a special state
// (subscribed to pubsub channel, transaction started, ...).
Dial func() (Conn, error)
// TestOnBorrow is an optional application supplied function for checking
// the health of an idle connection before the connection is used again by
// the application. Argument t is the time that the connection was returned
// to the pool. If the function returns an error, then the connection is
// closed.
TestOnBorrow func(c Conn, t time.Time) error
// Maximum number of idle connections in the pool.
MaxIdle int
// Maximum number of connections allocated by the pool at a given time.
// When zero, there is no limit on the number of connections in the pool.
MaxActive int
// Close connections after remaining idle for this duration. If the value
// is zero, then idle connections are not closed. Applications should set
// the timeout to a value less than the server's timeout.
IdleTimeout time.Duration
// If Wait is true and the pool is at the MaxActive limit, then Get() waits
// for a connection to be returned to the pool before returning.
Wait bool
// Close connections older than this duration. If the value is zero, then
// the pool does not close connections based on age.
MaxConnLifetime time.Duration
chInitialized uint32 // set to 1 when field ch is initialized
mu sync.Mutex // mu protects the following fields
closed bool // set to true when the pool is closed.
active int // the number of open connections in the pool
ch chan struct{} // limits open connections when p.Wait is true
idle idleList // idle connections
}
// NewPool creates a new pool.
//
// Deprecated: Initialize the Pool directory as shown in the example.
func NewPool(newFn func() (Conn, error), maxIdle int) *Pool {
return &Pool{Dial: newFn, MaxIdle: maxIdle}
}
// Get gets a connection. The application must close the returned connection.
// This method always returns a valid connection so that applications can defer
// error handling to the first use of the connection. If there is an error
// getting an underlying connection, then the connection Err, Do, Send, Flush
// and Receive methods return that error.
func (p *Pool) Get() Conn {
pc, err := p.get(nil)
if err != nil {
return errorConn{err}
}
return &activeConn{p: p, pc: pc}
}
// PoolStats contains pool statistics.
type PoolStats struct {
// ActiveCount is the number of connections in the pool. The count includes
// idle connections and connections in use.
ActiveCount int
// IdleCount is the number of idle connections in the pool.
IdleCount int
}
// Stats returns pool's statistics.
func (p *Pool) Stats() PoolStats {
p.mu.Lock()
stats := PoolStats{
ActiveCount: p.active,
IdleCount: p.idle.count,
}
p.mu.Unlock()
return stats
}
// ActiveCount returns the number of connections in the pool. The count
// includes idle connections and connections in use.
func (p *Pool) ActiveCount() int {
p.mu.Lock()
active := p.active
p.mu.Unlock()
return active
}
// IdleCount returns the number of idle connections in the pool.
func (p *Pool) IdleCount() int {
p.mu.Lock()
idle := p.idle.count
p.mu.Unlock()
return idle
}
// Close releases the resources used by the pool.
func (p *Pool) Close() error {
p.mu.Lock()
if p.closed {
p.mu.Unlock()
return nil
}
p.closed = true
p.active -= p.idle.count
pc := p.idle.front
p.idle.count = 0
p.idle.front, p.idle.back = nil, nil
if p.ch != nil {
close(p.ch)
}
p.mu.Unlock()
for ; pc != nil; pc = pc.next {
pc.c.Close()
}
return nil
}
func (p *Pool) lazyInit() {
// Fast path.
if atomic.LoadUint32(&p.chInitialized) == 1 {
return
}
// Slow path.
p.mu.Lock()
if p.chInitialized == 0 {
p.ch = make(chan struct{}, p.MaxActive)
if p.closed {
close(p.ch)
} else {
for i := 0; i < p.MaxActive; i++ {
p.ch <- struct{}{}
}
}
atomic.StoreUint32(&p.chInitialized, 1)
}
p.mu.Unlock()
}
// get prunes stale connections and returns a connection from the idle list or
// creates a new connection.
func (p *Pool) get(ctx interface {
Done() <-chan struct{}
Err() error
}) (*poolConn, error) {
// Handle limit for p.Wait == true.
if p.Wait && p.MaxActive > 0 {
p.lazyInit()
if ctx == nil {
<-p.ch
} else {
select {
case <-p.ch:
case <-ctx.Done():
return nil, ctx.Err()
}
}
}
p.mu.Lock()
// Prune stale connections at the back of the idle list.
if p.IdleTimeout > 0 {
n := p.idle.count
for i := 0; i < n && p.idle.back != nil && p.idle.back.t.Add(p.IdleTimeout).Before(nowFunc()); i++ {
pc := p.idle.back
p.idle.popBack()
p.mu.Unlock()
pc.c.Close()
p.mu.Lock()
p.active--
}
}
// Get idle connection from the front of idle list.
for p.idle.front != nil {
pc := p.idle.front
p.idle.popFront()
p.mu.Unlock()
if (p.TestOnBorrow == nil || p.TestOnBorrow(pc.c, pc.t) == nil) &&
(p.MaxConnLifetime == 0 || nowFunc().Sub(pc.created) < p.MaxConnLifetime) {
return pc, nil
}
pc.c.Close()
p.mu.Lock()
p.active--
}
// Check for pool closed before dialing a new connection.
if p.closed {
p.mu.Unlock()
return nil, errors.New("redigo: get on closed pool")
}
// Handle limit for p.Wait == false.
if !p.Wait && p.MaxActive > 0 && p.active >= p.MaxActive {
p.mu.Unlock()
return nil, ErrPoolExhausted
}
p.active++
p.mu.Unlock()
c, err := p.Dial()
if err != nil {
c = nil
p.mu.Lock()
p.active--
if p.ch != nil && !p.closed {
p.ch <- struct{}{}
}
p.mu.Unlock()
}
return &poolConn{c: c, created: nowFunc()}, err
}
func (p *Pool) put(pc *poolConn, forceClose bool) error {
p.mu.Lock()
if !p.closed && !forceClose {
pc.t = nowFunc()
p.idle.pushFront(pc)
if p.idle.count > p.MaxIdle {
pc = p.idle.back
p.idle.popBack()
} else {
pc = nil
}
}
if pc != nil {
p.mu.Unlock()
pc.c.Close()
p.mu.Lock()
p.active--
}
if p.ch != nil && !p.closed {
p.ch <- struct{}{}
}
p.mu.Unlock()
return nil
}
type activeConn struct {
p *Pool
pc *poolConn
state int
}
var (
sentinel []byte
sentinelOnce sync.Once
)
func initSentinel() {
p := make([]byte, 64)
if _, err := rand.Read(p); err == nil {
sentinel = p
} else {
h := sha1.New()
io.WriteString(h, "Oops, rand failed. Use time instead.")
io.WriteString(h, strconv.FormatInt(time.Now().UnixNano(), 10))
sentinel = h.Sum(nil)
}
}
func (ac *activeConn) Close() error {
pc := ac.pc
if pc == nil {
return nil
}
ac.pc = nil
if ac.state&connectionMultiState != 0 {
pc.c.Send("DISCARD")
ac.state &^= (connectionMultiState | connectionWatchState)
} else if ac.state&connectionWatchState != 0 {
pc.c.Send("UNWATCH")
ac.state &^= connectionWatchState
}
if ac.state&connectionSubscribeState != 0 {
pc.c.Send("UNSUBSCRIBE")
pc.c.Send("PUNSUBSCRIBE")
// To detect the end of the message stream, ask the server to echo
// a sentinel value and read until we see that value.
sentinelOnce.Do(initSentinel)
pc.c.Send("ECHO", sentinel)
pc.c.Flush()
for {
p, err := pc.c.Receive()
if err != nil {
break
}
if p, ok := p.([]byte); ok && bytes.Equal(p, sentinel) {
ac.state &^= connectionSubscribeState
break
}
}
}
pc.c.Do("")
ac.p.put(pc, ac.state != 0 || pc.c.Err() != nil)
return nil
}
func (ac *activeConn) Err() error {
pc := ac.pc
if pc == nil {
return errConnClosed
}
return pc.c.Err()
}
func (ac *activeConn) Do(commandName string, args ...interface{}) (reply interface{}, err error) {
pc := ac.pc
if pc == nil {
return nil, errConnClosed
}
ci := lookupCommandInfo(commandName)
ac.state = (ac.state | ci.Set) &^ ci.Clear
return pc.c.Do(commandName, args...)
}
func (ac *activeConn) DoWithTimeout(timeout time.Duration, commandName string, args ...interface{}) (reply interface{}, err error) {
pc := ac.pc
if pc == nil {
return nil, errConnClosed
}
cwt, ok := pc.c.(ConnWithTimeout)
if !ok {
return nil, errTimeoutNotSupported
}
ci := lookupCommandInfo(commandName)
ac.state = (ac.state | ci.Set) &^ ci.Clear
return cwt.DoWithTimeout(timeout, commandName, args...)
}
func (ac *activeConn) Send(commandName string, args ...interface{}) error {
pc := ac.pc
if pc == nil {
return errConnClosed
}
ci := lookupCommandInfo(commandName)
ac.state = (ac.state | ci.Set) &^ ci.Clear
return pc.c.Send(commandName, args...)
}
func (ac *activeConn) Flush() error {
pc := ac.pc
if pc == nil {
return errConnClosed
}
return pc.c.Flush()
}
func (ac *activeConn) Receive() (reply interface{}, err error) {
pc := ac.pc
if pc == nil {
return nil, errConnClosed
}
return pc.c.Receive()
}
func (ac *activeConn) ReceiveWithTimeout(timeout time.Duration) (reply interface{}, err error) {
pc := ac.pc
if pc == nil {
return nil, errConnClosed
}
cwt, ok := pc.c.(ConnWithTimeout)
if !ok {
return nil, errTimeoutNotSupported
}
return cwt.ReceiveWithTimeout(timeout)
}
type errorConn struct{ err error }
func (ec errorConn) Do(string, ...interface{}) (interface{}, error) { return nil, ec.err }
func (ec errorConn) DoWithTimeout(time.Duration, string, ...interface{}) (interface{}, error) {
return nil, ec.err
}
func (ec errorConn) Send(string, ...interface{}) error { return ec.err }
func (ec errorConn) Err() error { return ec.err }
func (ec errorConn) Close() error { return nil }
func (ec errorConn) Flush() error { return ec.err }
func (ec errorConn) Receive() (interface{}, error) { return nil, ec.err }
func (ec errorConn) ReceiveWithTimeout(time.Duration) (interface{}, error) { return nil, ec.err }
type idleList struct {
count int
front, back *poolConn
}
type poolConn struct {
c Conn
t time.Time
created time.Time
next, prev *poolConn
}
func (l *idleList) pushFront(pc *poolConn) {
pc.next = l.front
pc.prev = nil
if l.count == 0 {
l.back = pc
} else {
l.front.prev = pc
}
l.front = pc
l.count++
return
}
func (l *idleList) popFront() {
pc := l.front
l.count--
if l.count == 0 {
l.front, l.back = nil, nil
} else {
pc.next.prev = nil
l.front = pc.next
}
pc.next, pc.prev = nil, nil
}
func (l *idleList) popBack() {
pc := l.back
l.count--
if l.count == 0 {
l.front, l.back = nil, nil
} else {
pc.prev.next = nil
l.back = pc.prev
}
pc.next, pc.prev = nil, nil
}

35
vendor/github.com/gomodule/redigo/redis/pool17.go generated vendored Normal file
View File

@ -0,0 +1,35 @@
// Copyright 2018 Gary Burd
//
// 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.
// +build go1.7
package redis
import "context"
// GetContext gets a connection using the provided context.
//
// The provided Context must be non-nil. If the context expires before the
// connection is complete, an error is returned. Any expiration on the context
// will not affect the returned connection.
//
// If the function completes without error, then the application must close the
// returned connection.
func (p *Pool) GetContext(ctx context.Context) (Conn, error) {
pc, err := p.get(ctx)
if err != nil {
return errorConn{err}, err
}
return &activeConn{p: p, pc: pc}, nil
}

46
vendor/github.com/garyburd/redigo/redis/pubsub.go → vendor/github.com/gomodule/redigo/redis/pubsub.go generated vendored
View File

@ -14,11 +14,13 @@
package redis
import "errors"
import (
"errors"
"time"
)
// Subscription represents a subscribe or unsubscribe notification.
type Subscription struct {
// Kind is "subscribe", "unsubscribe", "psubscribe" or "punsubscribe"
Kind string
@ -31,23 +33,12 @@ type Subscription struct {
// Message represents a message notification.
type Message struct {
// The originating channel.
Channel string
// The message data.
Data []byte
}
// PMessage represents a pmessage notification.
type PMessage struct {
// The matched pattern.
// The matched pattern, if any
Pattern string
// The originating channel.
Channel string
// The message data.
Data []byte
}
@ -94,16 +85,29 @@ func (c PubSubConn) PUnsubscribe(channel ...interface{}) error {
}
// Ping sends a PING to the server with the specified data.
//
// The connection must be subscribed to at least one channel or pattern when
// calling this method.
func (c PubSubConn) Ping(data string) error {
c.Conn.Send("PING", data)
return c.Conn.Flush()
}
// Receive returns a pushed message as a Subscription, Message, PMessage, Pong
// or error. The return value is intended to be used directly in a type switch
// as illustrated in the PubSubConn example.
// Receive returns a pushed message as a Subscription, Message, Pong or error.
// The return value is intended to be used directly in a type switch as
// illustrated in the PubSubConn example.
func (c PubSubConn) Receive() interface{} {
reply, err := Values(c.Conn.Receive())
return c.receiveInternal(c.Conn.Receive())
}
// ReceiveWithTimeout is like Receive, but it allows the application to
// override the connection's default timeout.
func (c PubSubConn) ReceiveWithTimeout(timeout time.Duration) interface{} {
return c.receiveInternal(ReceiveWithTimeout(c.Conn, timeout))
}
func (c PubSubConn) receiveInternal(replyArg interface{}, errArg error) interface{} {
reply, err := Values(replyArg, errArg)
if err != nil {
return err
}
@ -122,11 +126,11 @@ func (c PubSubConn) Receive() interface{} {
}
return m
case "pmessage":
var pm PMessage
if _, err := Scan(reply, &pm.Pattern, &pm.Channel, &pm.Data); err != nil {
var m Message
if _, err := Scan(reply, &m.Pattern, &m.Channel, &m.Data); err != nil {
return err
}
return pm
return m
case "subscribe", "psubscribe", "unsubscribe", "punsubscribe":
s := Subscription{Kind: kind}
if _, err := Scan(reply, &s.Channel, &s.Count); err != nil {

117
vendor/github.com/gomodule/redigo/redis/redis.go generated vendored Normal file
View File

@ -0,0 +1,117 @@
// Copyright 2012 Gary Burd
//
// 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 redis
import (
"errors"
"time"
)
// Error represents an error returned in a command reply.
type Error string
func (err Error) Error() string { return string(err) }
// Conn represents a connection to a Redis server.
type Conn interface {
// Close closes the connection.
Close() error
// Err returns a non-nil value when the connection is not usable.
Err() error
// Do sends a command to the server and returns the received reply.
Do(commandName string, args ...interface{}) (reply interface{}, err error)
// Send writes the command to the client's output buffer.
Send(commandName string, args ...interface{}) error
// Flush flushes the output buffer to the Redis server.
Flush() error
// Receive receives a single reply from the Redis server
Receive() (reply interface{}, err error)
}
// Argument is the interface implemented by an object which wants to control how
// the object is converted to Redis bulk strings.
type Argument interface {
// RedisArg returns a value to be encoded as a bulk string per the
// conversions listed in the section 'Executing Commands'.
// Implementations should typically return a []byte or string.
RedisArg() interface{}
}
// Scanner is implemented by an object which wants to control its value is
// interpreted when read from Redis.
type Scanner interface {
// RedisScan assigns a value from a Redis value. The argument src is one of
// the reply types listed in the section `Executing Commands`.
//
// An error should be returned if the value cannot be stored without
// loss of information.
RedisScan(src interface{}) error
}
// ConnWithTimeout is an optional interface that allows the caller to override
// a connection's default read timeout. This interface is useful for executing
// the BLPOP, BRPOP, BRPOPLPUSH, XREAD and other commands that block at the
// server.
//
// A connection's default read timeout is set with the DialReadTimeout dial
// option. Applications should rely on the default timeout for commands that do
// not block at the server.
//
// All of the Conn implementations in this package satisfy the ConnWithTimeout
// interface.
//
// Use the DoWithTimeout and ReceiveWithTimeout helper functions to simplify
// use of this interface.
type ConnWithTimeout interface {
Conn
// Do sends a command to the server and returns the received reply.
// The timeout overrides the read timeout set when dialing the
// connection.
DoWithTimeout(timeout time.Duration, commandName string, args ...interface{}) (reply interface{}, err error)
// Receive receives a single reply from the Redis server. The timeout
// overrides the read timeout set when dialing the connection.
ReceiveWithTimeout(timeout time.Duration) (reply interface{}, err error)
}
var errTimeoutNotSupported = errors.New("redis: connection does not support ConnWithTimeout")
// DoWithTimeout executes a Redis command with the specified read timeout. If
// the connection does not satisfy the ConnWithTimeout interface, then an error
// is returned.
func DoWithTimeout(c Conn, timeout time.Duration, cmd string, args ...interface{}) (interface{}, error) {
cwt, ok := c.(ConnWithTimeout)
if !ok {
return nil, errTimeoutNotSupported
}
return cwt.DoWithTimeout(timeout, cmd, args...)
}
// ReceiveWithTimeout receives a reply with the specified read timeout. If the
// connection does not satisfy the ConnWithTimeout interface, then an error is
// returned.
func ReceiveWithTimeout(c Conn, timeout time.Duration) (interface{}, error) {
cwt, ok := c.(ConnWithTimeout)
if !ok {
return nil, errTimeoutNotSupported
}
return cwt.ReceiveWithTimeout(timeout)
}

202
vendor/github.com/garyburd/redigo/redis/reply.go → vendor/github.com/gomodule/redigo/redis/reply.go generated vendored
View File

@ -243,34 +243,67 @@ func Values(reply interface{}, err error) ([]interface{}, error) {
return nil, fmt.Errorf("redigo: unexpected type for Values, got type %T", reply)
}
func sliceHelper(reply interface{}, err error, name string, makeSlice func(int), assign func(int, interface{}) error) error {
if err != nil {
return err
}
switch reply := reply.(type) {
case []interface{}:
makeSlice(len(reply))
for i := range reply {
if reply[i] == nil {
continue
}
if err := assign(i, reply[i]); err != nil {
return err
}
}
return nil
case nil:
return ErrNil
case Error:
return reply
}
return fmt.Errorf("redigo: unexpected type for %s, got type %T", name, reply)
}
// Float64s is a helper that converts an array command reply to a []float64. If
// err is not equal to nil, then Float64s returns nil, err. Nil array items are
// converted to 0 in the output slice. Floats64 returns an error if an array
// item is not a bulk string or nil.
func Float64s(reply interface{}, err error) ([]float64, error) {
var result []float64
err = sliceHelper(reply, err, "Float64s", func(n int) { result = make([]float64, n) }, func(i int, v interface{}) error {
p, ok := v.([]byte)
if !ok {
return fmt.Errorf("redigo: unexpected element type for Floats64, got type %T", v)
}
f, err := strconv.ParseFloat(string(p), 64)
result[i] = f
return err
})
return result, err
}
// Strings is a helper that converts an array command reply to a []string. If
// err is not equal to nil, then Strings returns nil, err. Nil array items are
// converted to "" in the output slice. Strings returns an error if an array
// item is not a bulk string or nil.
func Strings(reply interface{}, err error) ([]string, error) {
if err != nil {
return nil, err
}
switch reply := reply.(type) {
case []interface{}:
result := make([]string, len(reply))
for i := range reply {
if reply[i] == nil {
continue
}
p, ok := reply[i].([]byte)
if !ok {
return nil, fmt.Errorf("redigo: unexpected element type for Strings, got type %T", reply[i])
}
result[i] = string(p)
var result []string
err = sliceHelper(reply, err, "Strings", func(n int) { result = make([]string, n) }, func(i int, v interface{}) error {
switch v := v.(type) {
case string:
result[i] = v
return nil
case []byte:
result[i] = string(v)
return nil
default:
return fmt.Errorf("redigo: unexpected element type for Strings, got type %T", v)
}
return result, nil
case nil:
return nil, ErrNil
case Error:
return nil, reply
}
return nil, fmt.Errorf("redigo: unexpected type for Strings, got type %T", reply)
})
return result, err
}
// ByteSlices is a helper that converts an array command reply to a [][]byte.
@ -278,43 +311,64 @@ func Strings(reply interface{}, err error) ([]string, error) {
// items are stay nil. ByteSlices returns an error if an array item is not a
// bulk string or nil.
func ByteSlices(reply interface{}, err error) ([][]byte, error) {
if err != nil {
return nil, err
}
switch reply := reply.(type) {
case []interface{}:
result := make([][]byte, len(reply))
for i := range reply {
if reply[i] == nil {
continue
}
p, ok := reply[i].([]byte)
if !ok {
return nil, fmt.Errorf("redigo: unexpected element type for ByteSlices, got type %T", reply[i])
}
result[i] = p
var result [][]byte
err = sliceHelper(reply, err, "ByteSlices", func(n int) { result = make([][]byte, n) }, func(i int, v interface{}) error {
p, ok := v.([]byte)
if !ok {
return fmt.Errorf("redigo: unexpected element type for ByteSlices, got type %T", v)
}
return result, nil
case nil:
return nil, ErrNil
case Error:
return nil, reply
}
return nil, fmt.Errorf("redigo: unexpected type for ByteSlices, got type %T", reply)
result[i] = p
return nil
})
return result, err
}
// Ints is a helper that converts an array command reply to a []int. If
// err is not equal to nil, then Ints returns nil, err.
// Int64s is a helper that converts an array command reply to a []int64.
// If err is not equal to nil, then Int64s returns nil, err. Nil array
// items are stay nil. Int64s returns an error if an array item is not a
// bulk string or nil.
func Int64s(reply interface{}, err error) ([]int64, error) {
var result []int64
err = sliceHelper(reply, err, "Int64s", func(n int) { result = make([]int64, n) }, func(i int, v interface{}) error {
switch v := v.(type) {
case int64:
result[i] = v
return nil
case []byte:
n, err := strconv.ParseInt(string(v), 10, 64)
result[i] = n
return err
default:
return fmt.Errorf("redigo: unexpected element type for Int64s, got type %T", v)
}
})
return result, err
}
// Ints is a helper that converts an array command reply to a []in.
// If err is not equal to nil, then Ints returns nil, err. Nil array
// items are stay nil. Ints returns an error if an array item is not a
// bulk string or nil.
func Ints(reply interface{}, err error) ([]int, error) {
var ints []int
values, err := Values(reply, err)
if err != nil {
return ints, err
}
if err := ScanSlice(values, &ints); err != nil {
return ints, err
}
return ints, nil
var result []int
err = sliceHelper(reply, err, "Ints", func(n int) { result = make([]int, n) }, func(i int, v interface{}) error {
switch v := v.(type) {
case int64:
n := int(v)
if int64(n) != v {
return strconv.ErrRange
}
result[i] = n
return nil
case []byte:
n, err := strconv.Atoi(string(v))
result[i] = n
return err
default:
return fmt.Errorf("redigo: unexpected element type for Ints, got type %T", v)
}
})
return result, err
}
// StringMap is a helper that converts an array of strings (alternating key, value)
@ -333,7 +387,7 @@ func StringMap(result interface{}, err error) (map[string]string, error) {
key, okKey := values[i].([]byte)
value, okValue := values[i+1].([]byte)
if !okKey || !okValue {
return nil, errors.New("redigo: ScanMap key not a bulk string value")
return nil, errors.New("redigo: StringMap key not a bulk string value")
}
m[string(key)] = string(value)
}
@ -355,7 +409,7 @@ func IntMap(result interface{}, err error) (map[string]int, error) {
for i := 0; i < len(values); i += 2 {
key, ok := values[i].([]byte)
if !ok {
return nil, errors.New("redigo: ScanMap key not a bulk string value")
return nil, errors.New("redigo: IntMap key not a bulk string value")
}
value, err := Int(values[i+1], nil)
if err != nil {
@ -381,7 +435,7 @@ func Int64Map(result interface{}, err error) (map[string]int64, error) {
for i := 0; i < len(values); i += 2 {
key, ok := values[i].([]byte)
if !ok {
return nil, errors.New("redigo: ScanMap key not a bulk string value")
return nil, errors.New("redigo: Int64Map key not a bulk string value")
}
value, err := Int64(values[i+1], nil)
if err != nil {
@ -391,3 +445,35 @@ func Int64Map(result interface{}, err error) (map[string]int64, error) {
}
return m, nil
}
// Positions is a helper that converts an array of positions (lat, long)
// into a [][2]float64. The GEOPOS command returns replies in this format.
func Positions(result interface{}, err error) ([]*[2]float64, error) {
values, err := Values(result, err)
if err != nil {
return nil, err
}
positions := make([]*[2]float64, len(values))
for i := range values {
if values[i] == nil {
continue
}
p, ok := values[i].([]interface{})
if !ok {
return nil, fmt.Errorf("redigo: unexpected element type for interface slice, got type %T", values[i])
}
if len(p) != 2 {
return nil, fmt.Errorf("redigo: unexpected number of values for a member position, got %d", len(p))
}
lat, err := Float64(p[0], nil)
if err != nil {
return nil, err
}
long, err := Float64(p[1], nil)
if err != nil {
return nil, err
}
positions[i] = &[2]float64{lat, long}
}
return positions, nil
}

85
vendor/github.com/garyburd/redigo/redis/scan.go → vendor/github.com/gomodule/redigo/redis/scan.go generated vendored
View File

@ -44,37 +44,50 @@ func cannotConvert(d reflect.Value, s interface{}) error {
sname = "Redis bulk string"
case []interface{}:
sname = "Redis array"
case nil:
sname = "Redis nil"
default:
sname = reflect.TypeOf(s).String()
}
return fmt.Errorf("cannot convert from %s to %s", sname, d.Type())
}
func convertAssignBulkString(d reflect.Value, s []byte) (err error) {
func convertAssignError(d reflect.Value, s Error) (err error) {
if d.Kind() == reflect.String {
d.SetString(string(s))
} else if d.Kind() == reflect.Slice && d.Type().Elem().Kind() == reflect.Uint8 {
d.SetBytes([]byte(s))
} else {
err = cannotConvert(d, s)
}
return
}
func convertAssignString(d reflect.Value, s string) (err error) {
switch d.Type().Kind() {
case reflect.Float32, reflect.Float64:
var x float64
x, err = strconv.ParseFloat(string(s), d.Type().Bits())
x, err = strconv.ParseFloat(s, d.Type().Bits())
d.SetFloat(x)
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
var x int64
x, err = strconv.ParseInt(string(s), 10, d.Type().Bits())
x, err = strconv.ParseInt(s, 10, d.Type().Bits())
d.SetInt(x)
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
var x uint64
x, err = strconv.ParseUint(string(s), 10, d.Type().Bits())
x, err = strconv.ParseUint(s, 10, d.Type().Bits())
d.SetUint(x)
case reflect.Bool:
var x bool
x, err = strconv.ParseBool(string(s))
x, err = strconv.ParseBool(s)
d.SetBool(x)
case reflect.String:
d.SetString(string(s))
d.SetString(s)
case reflect.Slice:
if d.Type().Elem().Kind() != reflect.Uint8 {
err = cannotConvert(d, s)
if d.Type().Elem().Kind() == reflect.Uint8 {
d.SetBytes([]byte(s))
} else {
d.SetBytes(s)
err = cannotConvert(d, s)
}
default:
err = cannotConvert(d, s)
@ -82,6 +95,22 @@ func convertAssignBulkString(d reflect.Value, s []byte) (err error) {
return
}
func convertAssignBulkString(d reflect.Value, s []byte) (err error) {
switch d.Type().Kind() {
case reflect.Slice:
// Handle []byte destination here to avoid unnecessary
// []byte -> string -> []byte converion.
if d.Type().Elem().Kind() == reflect.Uint8 {
d.SetBytes(s)
} else {
err = cannotConvert(d, s)
}
default:
err = convertAssignString(d, string(s))
}
return err
}
func convertAssignInt(d reflect.Value, s int64) (err error) {
switch d.Type().Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
@ -110,11 +139,34 @@ func convertAssignInt(d reflect.Value, s int64) (err error) {
}
func convertAssignValue(d reflect.Value, s interface{}) (err error) {
if d.Kind() != reflect.Ptr {
if d.CanAddr() {
d2 := d.Addr()
if d2.CanInterface() {
if scanner, ok := d2.Interface().(Scanner); ok {
return scanner.RedisScan(s)
}
}
}
} else if d.CanInterface() {
// Already a reflect.Ptr
if d.IsNil() {
d.Set(reflect.New(d.Type().Elem()))
}
if scanner, ok := d.Interface().(Scanner); ok {
return scanner.RedisScan(s)
}
}
switch s := s.(type) {
case []byte:
err = convertAssignBulkString(d, s)
case int64:
err = convertAssignInt(d, s)
case string:
err = convertAssignString(d, s)
case Error:
err = convertAssignError(d, s)
default:
err = cannotConvert(d, s)
}
@ -135,11 +187,15 @@ func convertAssignArray(d reflect.Value, s []interface{}) error {
}
func convertAssign(d interface{}, s interface{}) (err error) {
if scanner, ok := d.(Scanner); ok {
return scanner.RedisScan(s)
}
// Handle the most common destination types using type switches and
// fall back to reflection for all other types.
switch s := s.(type) {
case nil:
// ingore
// ignore
case []byte:
switch d := d.(type) {
case *string:
@ -186,7 +242,11 @@ func convertAssign(d interface{}, s interface{}) (err error) {
case string:
switch d := d.(type) {
case *string:
*d = string(s)
*d = s
case *interface{}:
*d = s
case nil:
// skip value
default:
err = cannotConvert(reflect.ValueOf(d), s)
}
@ -215,6 +275,8 @@ func convertAssign(d interface{}, s interface{}) (err error) {
// Scan copies from src to the values pointed at by dest.
//
// Scan uses RedisScan if available otherwise:
//
// The values pointed at by dest must be an integer, float, boolean, string,
// []byte, interface{} or slices of these types. Scan uses the standard strconv
// package to convert bulk strings to numeric and boolean types.
@ -355,6 +417,7 @@ var errScanStructValue = errors.New("redigo.ScanStruct: value must be non-nil po
//
// Fields with the tag redis:"-" are ignored.
//
// Each field uses RedisScan if available otherwise:
// Integer, float, boolean, string and []byte fields are supported. Scan uses the
// standard strconv package to convert bulk string values to numeric and
// boolean types.

5
vendor/github.com/garyburd/redigo/redis/script.go → vendor/github.com/gomodule/redigo/redis/script.go generated vendored
View File

@ -55,6 +55,11 @@ func (s *Script) args(spec string, keysAndArgs []interface{}) []interface{} {
return args
}
// Hash returns the script hash.
func (s *Script) Hash() string {
return s.hash
}
// Do evaluates the script. Under the covers, Do optimistically evaluates the
// script using the EVALSHA command. If the command fails because the script is
// not loaded, then Do evaluates the script using the EVAL command (thus

12
vendor/vendor.json vendored
View File

@ -303,12 +303,6 @@
"revision": "0d253a66e6e1349f4581d6d2b300ee434ee2da9f",
"revisionTime": "2017-02-16T21:49:44Z"
},
{
"checksumSHA1": "81OSg/NapmTaRpSS+oYsPVE0b1Y=",
"path": "github.com/garyburd/redigo/redis",
"revision": "0d253a66e6e1349f4581d6d2b300ee434ee2da9f",
"revisionTime": "2017-02-16T21:49:44Z"
},
{
"checksumSHA1": "+IH9gXMht4fL/fxKRZ4sqGBps1g=",
"path": "github.com/go-ini/ini",
@ -381,6 +375,12 @@
"revision": "2e65f85255dbc3072edf28d6b5b8efc472979f5a",
"revisionTime": "2018-05-18T05:39:59Z"
},
{
"checksumSHA1": "umngZiUg6r0nzonwk/rSEpykaVk=",
"path": "github.com/gomodule/redigo/redis",
"revision": "43fe51054af5fb7acdc89c38a3f8098fbf997a53",
"revisionTime": "2019-02-05T13:53:52Z"
},
{
"checksumSHA1": "0x0CoHbgoWngucjKSDPFodeL8ek=",
"path": "github.com/googleapis/gax-go",