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vendor: add github.com/gregjones/httpcache/redis
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175
vendor/github.com/garyburd/redigo/LICENSE
generated
vendored
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175
vendor/github.com/garyburd/redigo/LICENSE
generated
vendored
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@ -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
|
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|
||||
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|
||||
"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
|
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outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
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exercising permissions granted by this License.
|
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|
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"Source" form shall mean the preferred form for making modifications,
|
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including but not limited to software source code, documentation
|
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|
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|
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"Object" form shall mean any form resulting from mechanical
|
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|
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|
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|
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"Work" shall mean the work of authorship, whether in Source or
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|
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|
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|
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do not modify the License. You may add Your own attribution
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|
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|
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You may add Your own copyright statement to Your modifications and
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may provide additional or different license terms and conditions
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|
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reproduction, and distribution of the Work otherwise complies with
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the conditions stated in this License.
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|
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|
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any Contribution intentionally submitted for inclusion in the Work
|
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by You to the Licensor shall be under the terms and conditions of
|
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Notwithstanding the above, nothing herein shall supersede or modify
|
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|
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with Licensor regarding such Contributions.
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6. Trademarks. This License does not grant permission to use the trade
|
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agreed to in writing, Licensor provides the Work (and each
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Contributor provides its Contributions) on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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whether in tort (including negligence), contract, or otherwise,
|
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unless required by applicable law (such as deliberate and grossly
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9. Accepting Warranty or Additional Liability. While redistributing
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|
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incurred by, or claims asserted against, such Contributor by reason
|
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of your accepting any such warranty or additional liability.
|
54
vendor/github.com/garyburd/redigo/internal/commandinfo.go
generated
vendored
Normal file
54
vendor/github.com/garyburd/redigo/internal/commandinfo.go
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vendored
Normal file
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@ -0,0 +1,54 @@
|
|||
// 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 internal // import "github.com/garyburd/redigo/internal"
|
||||
|
||||
import (
|
||||
"strings"
|
||||
)
|
||||
|
||||
const (
|
||||
WatchState = 1 << iota
|
||||
MultiState
|
||||
SubscribeState
|
||||
MonitorState
|
||||
)
|
||||
|
||||
type CommandInfo struct {
|
||||
Set, Clear int
|
||||
}
|
||||
|
||||
var commandInfos = map[string]CommandInfo{
|
||||
"WATCH": {Set: WatchState},
|
||||
"UNWATCH": {Clear: WatchState},
|
||||
"MULTI": {Set: MultiState},
|
||||
"EXEC": {Clear: WatchState | MultiState},
|
||||
"DISCARD": {Clear: WatchState | MultiState},
|
||||
"PSUBSCRIBE": {Set: SubscribeState},
|
||||
"SUBSCRIBE": {Set: SubscribeState},
|
||||
"MONITOR": {Set: MonitorState},
|
||||
}
|
||||
|
||||
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)]
|
||||
}
|
622
vendor/github.com/garyburd/redigo/redis/conn.go
generated
vendored
Normal file
622
vendor/github.com/garyburd/redigo/redis/conn.go
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|||
// 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 (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"crypto/tls"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"net"
|
||||
"net/url"
|
||||
"regexp"
|
||||
"strconv"
|
||||
"sync"
|
||||
"time"
|
||||
)
|
||||
|
||||
// conn is the low-level implementation of Conn
|
||||
type conn struct {
|
||||
|
||||
// Shared
|
||||
mu sync.Mutex
|
||||
pending int
|
||||
err error
|
||||
conn net.Conn
|
||||
|
||||
// Read
|
||||
readTimeout time.Duration
|
||||
br *bufio.Reader
|
||||
|
||||
// Write
|
||||
writeTimeout time.Duration
|
||||
bw *bufio.Writer
|
||||
|
||||
// Scratch space for formatting argument length.
|
||||
// '*' or '$', length, "\r\n"
|
||||
lenScratch [32]byte
|
||||
|
||||
// Scratch space for formatting integers and floats.
|
||||
numScratch [40]byte
|
||||
}
|
||||
|
||||
// DialTimeout acts like Dial but takes timeouts for establishing the
|
||||
// connection to the server, writing a command and reading a reply.
|
||||
//
|
||||
// Deprecated: Use Dial with options instead.
|
||||
func DialTimeout(network, address string, connectTimeout, readTimeout, writeTimeout time.Duration) (Conn, error) {
|
||||
return Dial(network, address,
|
||||
DialConnectTimeout(connectTimeout),
|
||||
DialReadTimeout(readTimeout),
|
||||
DialWriteTimeout(writeTimeout))
|
||||
}
|
||||
|
||||
// DialOption specifies an option for dialing a Redis server.
|
||||
type DialOption struct {
|
||||
f func(*dialOptions)
|
||||
}
|
||||
|
||||
type dialOptions struct {
|
||||
readTimeout time.Duration
|
||||
writeTimeout time.Duration
|
||||
dial func(network, addr string) (net.Conn, error)
|
||||
db int
|
||||
password string
|
||||
dialTLS bool
|
||||
skipVerify bool
|
||||
tlsConfig *tls.Config
|
||||
}
|
||||
|
||||
// DialReadTimeout specifies the timeout for reading a single command reply.
|
||||
func DialReadTimeout(d time.Duration) DialOption {
|
||||
return DialOption{func(do *dialOptions) {
|
||||
do.readTimeout = d
|
||||
}}
|
||||
}
|
||||
|
||||
// DialWriteTimeout specifies the timeout for writing a single command.
|
||||
func DialWriteTimeout(d time.Duration) DialOption {
|
||||
return DialOption{func(do *dialOptions) {
|
||||
do.writeTimeout = d
|
||||
}}
|
||||
}
|
||||
|
||||
// DialConnectTimeout specifies the timeout for connecting to the Redis server.
|
||||
func DialConnectTimeout(d time.Duration) DialOption {
|
||||
return DialOption{func(do *dialOptions) {
|
||||
dialer := net.Dialer{Timeout: d}
|
||||
do.dial = dialer.Dial
|
||||
}}
|
||||
}
|
||||
|
||||
// DialNetDial specifies a custom dial function for creating TCP
|
||||
// connections. If this option is left out, then net.Dial is
|
||||
// used. DialNetDial overrides DialConnectTimeout.
|
||||
func DialNetDial(dial func(network, addr string) (net.Conn, error)) DialOption {
|
||||
return DialOption{func(do *dialOptions) {
|
||||
do.dial = dial
|
||||
}}
|
||||
}
|
||||
|
||||
// DialDatabase specifies the database to select when dialing a connection.
|
||||
func DialDatabase(db int) DialOption {
|
||||
return DialOption{func(do *dialOptions) {
|
||||
do.db = db
|
||||
}}
|
||||
}
|
||||
|
||||
// DialPassword specifies the password to use when connecting to
|
||||
// the Redis server.
|
||||
func DialPassword(password string) DialOption {
|
||||
return DialOption{func(do *dialOptions) {
|
||||
do.password = password
|
||||
}}
|
||||
}
|
||||
|
||||
// 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 {
|
||||
return DialOption{func(do *dialOptions) {
|
||||
do.tlsConfig = c
|
||||
}}
|
||||
}
|
||||
|
||||
// DialTLSSkipVerify to disable 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
|
||||
}}
|
||||
}
|
||||
|
||||
// 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,
|
||||
}
|
||||
for _, option := range options {
|
||||
option.f(&do)
|
||||
}
|
||||
|
||||
netConn, err := do.dial(network, address)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if do.dialTLS {
|
||||
tlsConfig := cloneTLSClientConfig(do.tlsConfig, do.skipVerify)
|
||||
if tlsConfig.ServerName == "" {
|
||||
host, _, err := net.SplitHostPort(address)
|
||||
if err != nil {
|
||||
netConn.Close()
|
||||
return nil, err
|
||||
}
|
||||
tlsConfig.ServerName = host
|
||||
}
|
||||
|
||||
tlsConn := tls.Client(netConn, tlsConfig)
|
||||
if err := tlsConn.Handshake(); err != nil {
|
||||
netConn.Close()
|
||||
return nil, err
|
||||
}
|
||||
netConn = tlsConn
|
||||
}
|
||||
|
||||
c := &conn{
|
||||
conn: netConn,
|
||||
bw: bufio.NewWriter(netConn),
|
||||
br: bufio.NewReader(netConn),
|
||||
readTimeout: do.readTimeout,
|
||||
writeTimeout: do.writeTimeout,
|
||||
}
|
||||
|
||||
if do.password != "" {
|
||||
if _, err := c.Do("AUTH", do.password); err != nil {
|
||||
netConn.Close()
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
if do.db != 0 {
|
||||
if _, err := c.Do("SELECT", do.db); err != nil {
|
||||
netConn.Close()
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
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
|
||||
// URI scheme. URLs should follow the draft IANA specification for the
|
||||
// scheme (https://www.iana.org/assignments/uri-schemes/prov/redis).
|
||||
func DialURL(rawurl string, options ...DialOption) (Conn, error) {
|
||||
u, err := url.Parse(rawurl)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if u.Scheme != "redis" && u.Scheme != "rediss" {
|
||||
return nil, fmt.Errorf("invalid redis URL scheme: %s", u.Scheme)
|
||||
}
|
||||
|
||||
// As per the IANA draft spec, the host defaults to localhost and
|
||||
// the port defaults to 6379.
|
||||
host, port, err := net.SplitHostPort(u.Host)
|
||||
if err != nil {
|
||||
// assume port is missing
|
||||
host = u.Host
|
||||
port = "6379"
|
||||
}
|
||||
if host == "" {
|
||||
host = "localhost"
|
||||
}
|
||||
address := net.JoinHostPort(host, port)
|
||||
|
||||
if u.User != nil {
|
||||
password, isSet := u.User.Password()
|
||||
if isSet {
|
||||
options = append(options, DialPassword(password))
|
||||
}
|
||||
}
|
||||
|
||||
match := pathDBRegexp.FindStringSubmatch(u.Path)
|
||||
if len(match) == 2 {
|
||||
db := 0
|
||||
if len(match[1]) > 0 {
|
||||
db, err = strconv.Atoi(match[1])
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("invalid database: %s", u.Path[1:])
|
||||
}
|
||||
}
|
||||
if db != 0 {
|
||||
options = append(options, DialDatabase(db))
|
||||
}
|
||||
} else if u.Path != "" {
|
||||
return nil, fmt.Errorf("invalid database: %s", u.Path[1:])
|
||||
}
|
||||
|
||||
if u.Scheme == "rediss" {
|
||||
options = append([]DialOption{{dialTLS}}, options...)
|
||||
}
|
||||
|
||||
return Dial("tcp", address, options...)
|
||||
}
|
||||
|
||||
// NewConn returns a new Redigo connection for the given net connection.
|
||||
func NewConn(netConn net.Conn, readTimeout, writeTimeout time.Duration) Conn {
|
||||
return &conn{
|
||||
conn: netConn,
|
||||
bw: bufio.NewWriter(netConn),
|
||||
br: bufio.NewReader(netConn),
|
||||
readTimeout: readTimeout,
|
||||
writeTimeout: writeTimeout,
|
||||
}
|
||||
}
|
||||
|
||||
func (c *conn) Close() error {
|
||||
c.mu.Lock()
|
||||
err := c.err
|
||||
if c.err == nil {
|
||||
c.err = errors.New("redigo: closed")
|
||||
err = c.conn.Close()
|
||||
}
|
||||
c.mu.Unlock()
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *conn) fatal(err error) error {
|
||||
c.mu.Lock()
|
||||
if c.err == nil {
|
||||
c.err = err
|
||||
// Close connection to force errors on subsequent calls and to unblock
|
||||
// other reader or writer.
|
||||
c.conn.Close()
|
||||
}
|
||||
c.mu.Unlock()
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *conn) Err() error {
|
||||
c.mu.Lock()
|
||||
err := c.err
|
||||
c.mu.Unlock()
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *conn) writeLen(prefix byte, n int) error {
|
||||
c.lenScratch[len(c.lenScratch)-1] = '\n'
|
||||
c.lenScratch[len(c.lenScratch)-2] = '\r'
|
||||
i := len(c.lenScratch) - 3
|
||||
for {
|
||||
c.lenScratch[i] = byte('0' + n%10)
|
||||
i -= 1
|
||||
n = n / 10
|
||||
if n == 0 {
|
||||
break
|
||||
}
|
||||
}
|
||||
c.lenScratch[i] = prefix
|
||||
_, err := c.bw.Write(c.lenScratch[i:])
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *conn) writeString(s string) error {
|
||||
c.writeLen('$', len(s))
|
||||
c.bw.WriteString(s)
|
||||
_, err := c.bw.WriteString("\r\n")
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *conn) writeBytes(p []byte) error {
|
||||
c.writeLen('$', len(p))
|
||||
c.bw.Write(p)
|
||||
_, err := c.bw.WriteString("\r\n")
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *conn) writeInt64(n int64) error {
|
||||
return c.writeBytes(strconv.AppendInt(c.numScratch[:0], n, 10))
|
||||
}
|
||||
|
||||
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) {
|
||||
c.writeLen('*', 1+len(args))
|
||||
err = c.writeString(cmd)
|
||||
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("")
|
||||
case Argument:
|
||||
var buf bytes.Buffer
|
||||
fmt.Fprint(&buf, arg.RedisArg())
|
||||
err = c.writeBytes(buf.Bytes())
|
||||
default:
|
||||
var buf bytes.Buffer
|
||||
fmt.Fprint(&buf, arg)
|
||||
err = c.writeBytes(buf.Bytes())
|
||||
}
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
type protocolError string
|
||||
|
||||
func (pe protocolError) Error() string {
|
||||
return fmt.Sprintf("redigo: %s (possible server error or unsupported concurrent read by application)", string(pe))
|
||||
}
|
||||
|
||||
func (c *conn) readLine() ([]byte, error) {
|
||||
p, err := c.br.ReadSlice('\n')
|
||||
if err == bufio.ErrBufferFull {
|
||||
return nil, protocolError("long response line")
|
||||
}
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
i := len(p) - 2
|
||||
if i < 0 || p[i] != '\r' {
|
||||
return nil, protocolError("bad response line terminator")
|
||||
}
|
||||
return p[:i], nil
|
||||
}
|
||||
|
||||
// parseLen parses bulk string and array lengths.
|
||||
func parseLen(p []byte) (int, error) {
|
||||
if len(p) == 0 {
|
||||
return -1, protocolError("malformed length")
|
||||
}
|
||||
|
||||
if p[0] == '-' && len(p) == 2 && p[1] == '1' {
|
||||
// handle $-1 and $-1 null replies.
|
||||
return -1, nil
|
||||
}
|
||||
|
||||
var n int
|
||||
for _, b := range p {
|
||||
n *= 10
|
||||
if b < '0' || b > '9' {
|
||||
return -1, protocolError("illegal bytes in length")
|
||||
}
|
||||
n += int(b - '0')
|
||||
}
|
||||
|
||||
return n, nil
|
||||
}
|
||||
|
||||
// parseInt parses an integer reply.
|
||||
func parseInt(p []byte) (interface{}, error) {
|
||||
if len(p) == 0 {
|
||||
return 0, protocolError("malformed integer")
|
||||
}
|
||||
|
||||
var negate bool
|
||||
if p[0] == '-' {
|
||||
negate = true
|
||||
p = p[1:]
|
||||
if len(p) == 0 {
|
||||
return 0, protocolError("malformed integer")
|
||||
}
|
||||
}
|
||||
|
||||
var n int64
|
||||
for _, b := range p {
|
||||
n *= 10
|
||||
if b < '0' || b > '9' {
|
||||
return 0, protocolError("illegal bytes in length")
|
||||
}
|
||||
n += int64(b - '0')
|
||||
}
|
||||
|
||||
if negate {
|
||||
n = -n
|
||||
}
|
||||
return n, nil
|
||||
}
|
||||
|
||||
var (
|
||||
okReply interface{} = "OK"
|
||||
pongReply interface{} = "PONG"
|
||||
)
|
||||
|
||||
func (c *conn) readReply() (interface{}, error) {
|
||||
line, err := c.readLine()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if len(line) == 0 {
|
||||
return nil, protocolError("short response line")
|
||||
}
|
||||
switch line[0] {
|
||||
case '+':
|
||||
switch {
|
||||
case len(line) == 3 && line[1] == 'O' && line[2] == 'K':
|
||||
// Avoid allocation for frequent "+OK" response.
|
||||
return okReply, nil
|
||||
case len(line) == 5 && line[1] == 'P' && line[2] == 'O' && line[3] == 'N' && line[4] == 'G':
|
||||
// Avoid allocation in PING command benchmarks :)
|
||||
return pongReply, nil
|
||||
default:
|
||||
return string(line[1:]), nil
|
||||
}
|
||||
case '-':
|
||||
return Error(string(line[1:])), nil
|
||||
case ':':
|
||||
return parseInt(line[1:])
|
||||
case '$':
|
||||
n, err := parseLen(line[1:])
|
||||
if n < 0 || err != nil {
|
||||
return nil, err
|
||||
}
|
||||
p := make([]byte, n)
|
||||
_, err = io.ReadFull(c.br, p)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if line, err := c.readLine(); err != nil {
|
||||
return nil, err
|
||||
} else if len(line) != 0 {
|
||||
return nil, protocolError("bad bulk string format")
|
||||
}
|
||||
return p, nil
|
||||
case '*':
|
||||
n, err := parseLen(line[1:])
|
||||
if n < 0 || err != nil {
|
||||
return nil, err
|
||||
}
|
||||
r := make([]interface{}, n)
|
||||
for i := range r {
|
||||
r[i], err = c.readReply()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
return r, nil
|
||||
}
|
||||
return nil, protocolError("unexpected response line")
|
||||
}
|
||||
|
||||
func (c *conn) Send(cmd string, args ...interface{}) error {
|
||||
c.mu.Lock()
|
||||
c.pending += 1
|
||||
c.mu.Unlock()
|
||||
if c.writeTimeout != 0 {
|
||||
c.conn.SetWriteDeadline(time.Now().Add(c.writeTimeout))
|
||||
}
|
||||
if err := c.writeCommand(cmd, args); err != nil {
|
||||
return c.fatal(err)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *conn) Flush() error {
|
||||
if c.writeTimeout != 0 {
|
||||
c.conn.SetWriteDeadline(time.Now().Add(c.writeTimeout))
|
||||
}
|
||||
if err := c.bw.Flush(); err != nil {
|
||||
return c.fatal(err)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *conn) Receive() (reply interface{}, err error) {
|
||||
if c.readTimeout != 0 {
|
||||
c.conn.SetReadDeadline(time.Now().Add(c.readTimeout))
|
||||
}
|
||||
if reply, err = c.readReply(); err != nil {
|
||||
return nil, c.fatal(err)
|
||||
}
|
||||
// When using pub/sub, the number of receives can be greater than the
|
||||
// number of sends. To enable normal use of the connection after
|
||||
// unsubscribing from all channels, we do not decrement pending to a
|
||||
// negative value.
|
||||
//
|
||||
// The pending field is decremented after the reply is read to handle the
|
||||
// case where Receive is called before Send.
|
||||
c.mu.Lock()
|
||||
if c.pending > 0 {
|
||||
c.pending -= 1
|
||||
}
|
||||
c.mu.Unlock()
|
||||
if err, ok := reply.(Error); ok {
|
||||
return nil, err
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (c *conn) Do(cmd string, args ...interface{}) (interface{}, error) {
|
||||
c.mu.Lock()
|
||||
pending := c.pending
|
||||
c.pending = 0
|
||||
c.mu.Unlock()
|
||||
|
||||
if cmd == "" && pending == 0 {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
if c.writeTimeout != 0 {
|
||||
c.conn.SetWriteDeadline(time.Now().Add(c.writeTimeout))
|
||||
}
|
||||
|
||||
if cmd != "" {
|
||||
if err := c.writeCommand(cmd, args); err != nil {
|
||||
return nil, c.fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
if err := c.bw.Flush(); err != nil {
|
||||
return nil, c.fatal(err)
|
||||
}
|
||||
|
||||
if c.readTimeout != 0 {
|
||||
c.conn.SetReadDeadline(time.Now().Add(c.readTimeout))
|
||||
}
|
||||
|
||||
if cmd == "" {
|
||||
reply := make([]interface{}, pending)
|
||||
for i := range reply {
|
||||
r, e := c.readReply()
|
||||
if e != nil {
|
||||
return nil, c.fatal(e)
|
||||
}
|
||||
reply[i] = r
|
||||
}
|
||||
return reply, nil
|
||||
}
|
||||
|
||||
var err error
|
||||
var reply interface{}
|
||||
for i := 0; i <= pending; i++ {
|
||||
var e error
|
||||
if reply, e = c.readReply(); e != nil {
|
||||
return nil, c.fatal(e)
|
||||
}
|
||||
if e, ok := reply.(Error); ok && err == nil {
|
||||
err = e
|
||||
}
|
||||
}
|
||||
return reply, err
|
||||
}
|
177
vendor/github.com/garyburd/redigo/redis/doc.go
generated
vendored
Normal file
177
vendor/github.com/garyburd/redigo/redis/doc.go
generated
vendored
Normal file
|
@ -0,0 +1,177 @@
|
|||
// 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 is a client for the Redis database.
|
||||
//
|
||||
// The Redigo FAQ (https://github.com/garyburd/redigo/wiki/FAQ) contains more
|
||||
// documentation about this package.
|
||||
//
|
||||
// Connections
|
||||
//
|
||||
// The Conn interface is the primary interface for working with Redis.
|
||||
// Applications create connections by calling the Dial, DialWithTimeout or
|
||||
// NewConn functions. In the future, functions will be added for creating
|
||||
// sharded and other types of connections.
|
||||
//
|
||||
// The application must call the connection Close method when the application
|
||||
// is done with the connection.
|
||||
//
|
||||
// Executing Commands
|
||||
//
|
||||
// The Conn interface has a generic method for executing Redis commands:
|
||||
//
|
||||
// Do(commandName string, args ...interface{}) (reply interface{}, err error)
|
||||
//
|
||||
// The Redis command reference (http://redis.io/commands) lists the available
|
||||
// commands. An example of using the Redis APPEND command is:
|
||||
//
|
||||
// n, err := conn.Do("APPEND", "key", "value")
|
||||
//
|
||||
// The Do method converts command arguments to binary strings for transmission
|
||||
// to the server as follows:
|
||||
//
|
||||
// Go Type Conversion
|
||||
// []byte Sent as is
|
||||
// string Sent as is
|
||||
// int, int64 strconv.FormatInt(v)
|
||||
// float64 strconv.FormatFloat(v, 'g', -1, 64)
|
||||
// bool true -> "1", false -> "0"
|
||||
// nil ""
|
||||
// all other types fmt.Print(v)
|
||||
//
|
||||
// Redis command reply types are represented using the following Go types:
|
||||
//
|
||||
// Redis type Go type
|
||||
// error redis.Error
|
||||
// integer int64
|
||||
// simple string string
|
||||
// bulk string []byte or nil if value not present.
|
||||
// array []interface{} or nil if value not present.
|
||||
//
|
||||
// Use type assertions or the reply helper functions to convert from
|
||||
// interface{} to the specific Go type for the command result.
|
||||
//
|
||||
// Pipelining
|
||||
//
|
||||
// Connections support pipelining using the Send, Flush and Receive methods.
|
||||
//
|
||||
// Send(commandName string, args ...interface{}) error
|
||||
// Flush() error
|
||||
// Receive() (reply interface{}, err error)
|
||||
//
|
||||
// Send writes the command to the connection's output buffer. Flush flushes the
|
||||
// connection's output buffer to the server. Receive reads a single reply from
|
||||
// the server. The following example shows a simple pipeline.
|
||||
//
|
||||
// c.Send("SET", "foo", "bar")
|
||||
// c.Send("GET", "foo")
|
||||
// c.Flush()
|
||||
// c.Receive() // reply from SET
|
||||
// v, err = c.Receive() // reply from GET
|
||||
//
|
||||
// The Do method combines the functionality of the Send, Flush and Receive
|
||||
// methods. The Do method starts by writing the command and flushing the output
|
||||
// buffer. Next, the Do method receives all pending replies including the reply
|
||||
// for the command just sent by Do. If any of the received replies is an error,
|
||||
// then Do returns the error. If there are no errors, then Do returns the last
|
||||
// reply. If the command argument to the Do method is "", then the Do method
|
||||
// will flush the output buffer and receive pending replies without sending a
|
||||
// command.
|
||||
//
|
||||
// Use the Send and Do methods to implement pipelined transactions.
|
||||
//
|
||||
// c.Send("MULTI")
|
||||
// c.Send("INCR", "foo")
|
||||
// c.Send("INCR", "bar")
|
||||
// r, err := c.Do("EXEC")
|
||||
// fmt.Println(r) // prints [1, 1]
|
||||
//
|
||||
// Concurrency
|
||||
//
|
||||
// Connections support one concurrent caller to the Receive method and one
|
||||
// concurrent caller to the Send and Flush methods. No other concurrency is
|
||||
// supported including concurrent calls to the Do method.
|
||||
//
|
||||
// For full concurrent access to Redis, use the thread-safe Pool to get, use
|
||||
// and release a connection from within a goroutine. Connections returned from
|
||||
// a Pool have the concurrency restrictions described in the previous
|
||||
// paragraph.
|
||||
//
|
||||
// Publish and Subscribe
|
||||
//
|
||||
// Use the Send, Flush and Receive methods to implement Pub/Sub subscribers.
|
||||
//
|
||||
// c.Send("SUBSCRIBE", "example")
|
||||
// c.Flush()
|
||||
// for {
|
||||
// reply, err := c.Receive()
|
||||
// if err != nil {
|
||||
// return err
|
||||
// }
|
||||
// // process pushed message
|
||||
// }
|
||||
//
|
||||
// The PubSubConn type wraps a Conn with convenience methods for implementing
|
||||
// subscribers. The Subscribe, PSubscribe, Unsubscribe and PUnsubscribe methods
|
||||
// send and flush a subscription management command. The receive method
|
||||
// converts a pushed message to convenient types for use in a type switch.
|
||||
//
|
||||
// psc := redis.PubSubConn{Conn: c}
|
||||
// psc.Subscribe("example")
|
||||
// for {
|
||||
// switch v := psc.Receive().(type) {
|
||||
// case redis.Message:
|
||||
// fmt.Printf("%s: message: %s\n", v.Channel, v.Data)
|
||||
// case redis.Subscription:
|
||||
// fmt.Printf("%s: %s %d\n", v.Channel, v.Kind, v.Count)
|
||||
// case error:
|
||||
// return v
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// Reply Helpers
|
||||
//
|
||||
// The Bool, Int, Bytes, String, Strings and Values functions convert a reply
|
||||
// to a value of a specific type. To allow convenient wrapping of calls to the
|
||||
// connection Do and Receive methods, the functions take a second argument of
|
||||
// type error. If the error is non-nil, then the helper function returns the
|
||||
// error. If the error is nil, the function converts the reply to the specified
|
||||
// type:
|
||||
//
|
||||
// exists, err := redis.Bool(c.Do("EXISTS", "foo"))
|
||||
// if err != nil {
|
||||
// // handle error return from c.Do or type conversion error.
|
||||
// }
|
||||
//
|
||||
// The Scan function converts elements of a array reply to Go types:
|
||||
//
|
||||
// var value1 int
|
||||
// var value2 string
|
||||
// reply, err := redis.Values(c.Do("MGET", "key1", "key2"))
|
||||
// if err != nil {
|
||||
// // handle error
|
||||
// }
|
||||
// if _, err := redis.Scan(reply, &value1, &value2); err != nil {
|
||||
// // handle error
|
||||
// }
|
||||
//
|
||||
// Errors
|
||||
//
|
||||
// Connection methods return error replies from the server as type redis.Error.
|
||||
//
|
||||
// Call the connection Err() method to determine if the connection encountered
|
||||
// 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"
|
33
vendor/github.com/garyburd/redigo/redis/go17.go
generated
vendored
Normal file
33
vendor/github.com/garyburd/redigo/redis/go17.go
generated
vendored
Normal file
|
@ -0,0 +1,33 @@
|
|||
// +build go1.7
|
||||
|
||||
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}
|
||||
}
|
||||
return &tls.Config{
|
||||
Rand: cfg.Rand,
|
||||
Time: cfg.Time,
|
||||
Certificates: cfg.Certificates,
|
||||
NameToCertificate: cfg.NameToCertificate,
|
||||
GetCertificate: cfg.GetCertificate,
|
||||
RootCAs: cfg.RootCAs,
|
||||
NextProtos: cfg.NextProtos,
|
||||
ServerName: cfg.ServerName,
|
||||
ClientAuth: cfg.ClientAuth,
|
||||
ClientCAs: cfg.ClientCAs,
|
||||
InsecureSkipVerify: cfg.InsecureSkipVerify,
|
||||
CipherSuites: cfg.CipherSuites,
|
||||
PreferServerCipherSuites: cfg.PreferServerCipherSuites,
|
||||
ClientSessionCache: cfg.ClientSessionCache,
|
||||
MinVersion: cfg.MinVersion,
|
||||
MaxVersion: cfg.MaxVersion,
|
||||
CurvePreferences: cfg.CurvePreferences,
|
||||
DynamicRecordSizingDisabled: cfg.DynamicRecordSizingDisabled,
|
||||
Renegotiation: cfg.Renegotiation,
|
||||
}
|
||||
}
|
117
vendor/github.com/garyburd/redigo/redis/log.go
generated
vendored
Normal file
117
vendor/github.com/garyburd/redigo/redis/log.go
generated
vendored
Normal 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 (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"log"
|
||||
)
|
||||
|
||||
// NewLoggingConn returns a logging wrapper around a connection.
|
||||
func NewLoggingConn(conn Conn, logger *log.Logger, prefix string) Conn {
|
||||
if prefix != "" {
|
||||
prefix = prefix + "."
|
||||
}
|
||||
return &loggingConn{conn, logger, prefix}
|
||||
}
|
||||
|
||||
type loggingConn struct {
|
||||
Conn
|
||||
logger *log.Logger
|
||||
prefix string
|
||||
}
|
||||
|
||||
func (c *loggingConn) Close() error {
|
||||
err := c.Conn.Close()
|
||||
var buf bytes.Buffer
|
||||
fmt.Fprintf(&buf, "%sClose() -> (%v)", c.prefix, err)
|
||||
c.logger.Output(2, buf.String())
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *loggingConn) printValue(buf *bytes.Buffer, v interface{}) {
|
||||
const chop = 32
|
||||
switch v := v.(type) {
|
||||
case []byte:
|
||||
if len(v) > chop {
|
||||
fmt.Fprintf(buf, "%q...", v[:chop])
|
||||
} else {
|
||||
fmt.Fprintf(buf, "%q", v)
|
||||
}
|
||||
case string:
|
||||
if len(v) > chop {
|
||||
fmt.Fprintf(buf, "%q...", v[:chop])
|
||||
} else {
|
||||
fmt.Fprintf(buf, "%q", v)
|
||||
}
|
||||
case []interface{}:
|
||||
if len(v) == 0 {
|
||||
buf.WriteString("[]")
|
||||
} else {
|
||||
sep := "["
|
||||
fin := "]"
|
||||
if len(v) > chop {
|
||||
v = v[:chop]
|
||||
fin = "...]"
|
||||
}
|
||||
for _, vv := range v {
|
||||
buf.WriteString(sep)
|
||||
c.printValue(buf, vv)
|
||||
sep = ", "
|
||||
}
|
||||
buf.WriteString(fin)
|
||||
}
|
||||
default:
|
||||
fmt.Fprint(buf, v)
|
||||
}
|
||||
}
|
||||
|
||||
func (c *loggingConn) print(method, commandName string, args []interface{}, reply interface{}, err error) {
|
||||
var buf bytes.Buffer
|
||||
fmt.Fprintf(&buf, "%s%s(", c.prefix, method)
|
||||
if method != "Receive" {
|
||||
buf.WriteString(commandName)
|
||||
for _, arg := range args {
|
||||
buf.WriteString(", ")
|
||||
c.printValue(&buf, arg)
|
||||
}
|
||||
}
|
||||
buf.WriteString(") -> (")
|
||||
if method != "Send" {
|
||||
c.printValue(&buf, reply)
|
||||
buf.WriteString(", ")
|
||||
}
|
||||
fmt.Fprintf(&buf, "%v)", err)
|
||||
c.logger.Output(3, buf.String())
|
||||
}
|
||||
|
||||
func (c *loggingConn) Do(commandName string, args ...interface{}) (interface{}, error) {
|
||||
reply, err := c.Conn.Do(commandName, args...)
|
||||
c.print("Do", 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)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *loggingConn) Receive() (interface{}, error) {
|
||||
reply, err := c.Conn.Receive()
|
||||
c.print("Receive", "", nil, reply, err)
|
||||
return reply, err
|
||||
}
|
424
vendor/github.com/garyburd/redigo/redis/pool.go
generated
vendored
Normal file
424
vendor/github.com/garyburd/redigo/redis/pool.go
generated
vendored
Normal file
|
@ -0,0 +1,424 @@
|
|||
// 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 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.Len()
|
||||
p.mu.Unlock()
|
||||
return idle
|
||||
}
|
||||
|
||||
// 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 }
|
31
vendor/github.com/garyburd/redigo/redis/pre_go17.go
generated
vendored
Normal file
31
vendor/github.com/garyburd/redigo/redis/pre_go17.go
generated
vendored
Normal file
|
@ -0,0 +1,31 @@
|
|||
// +build !go1.7
|
||||
|
||||
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}
|
||||
}
|
||||
return &tls.Config{
|
||||
Rand: cfg.Rand,
|
||||
Time: cfg.Time,
|
||||
Certificates: cfg.Certificates,
|
||||
NameToCertificate: cfg.NameToCertificate,
|
||||
GetCertificate: cfg.GetCertificate,
|
||||
RootCAs: cfg.RootCAs,
|
||||
NextProtos: cfg.NextProtos,
|
||||
ServerName: cfg.ServerName,
|
||||
ClientAuth: cfg.ClientAuth,
|
||||
ClientCAs: cfg.ClientCAs,
|
||||
InsecureSkipVerify: cfg.InsecureSkipVerify,
|
||||
CipherSuites: cfg.CipherSuites,
|
||||
PreferServerCipherSuites: cfg.PreferServerCipherSuites,
|
||||
ClientSessionCache: cfg.ClientSessionCache,
|
||||
MinVersion: cfg.MinVersion,
|
||||
MaxVersion: cfg.MaxVersion,
|
||||
CurvePreferences: cfg.CurvePreferences,
|
||||
}
|
||||
}
|
147
vendor/github.com/garyburd/redigo/redis/pubsub.go
generated
vendored
Normal file
147
vendor/github.com/garyburd/redigo/redis/pubsub.go
generated
vendored
Normal file
|
@ -0,0 +1,147 @@
|
|||
// 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"
|
||||
|
||||
// Subscription represents a subscribe or unsubscribe notification.
|
||||
type Subscription struct {
|
||||
|
||||
// Kind is "subscribe", "unsubscribe", "psubscribe" or "punsubscribe"
|
||||
Kind string
|
||||
|
||||
// The channel that was changed.
|
||||
Channel string
|
||||
|
||||
// The current number of subscriptions for connection.
|
||||
Count int
|
||||
}
|
||||
|
||||
// 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.
|
||||
Pattern string
|
||||
|
||||
// The originating channel.
|
||||
Channel string
|
||||
|
||||
// The message data.
|
||||
Data []byte
|
||||
}
|
||||
|
||||
// Pong represents a pubsub pong notification.
|
||||
type Pong struct {
|
||||
Data string
|
||||
}
|
||||
|
||||
// PubSubConn wraps a Conn with convenience methods for subscribers.
|
||||
type PubSubConn struct {
|
||||
Conn Conn
|
||||
}
|
||||
|
||||
// Close closes the connection.
|
||||
func (c PubSubConn) Close() error {
|
||||
return c.Conn.Close()
|
||||
}
|
||||
|
||||
// Subscribe subscribes the connection to the specified channels.
|
||||
func (c PubSubConn) Subscribe(channel ...interface{}) error {
|
||||
c.Conn.Send("SUBSCRIBE", channel...)
|
||||
return c.Conn.Flush()
|
||||
}
|
||||
|
||||
// PSubscribe subscribes the connection to the given patterns.
|
||||
func (c PubSubConn) PSubscribe(channel ...interface{}) error {
|
||||
c.Conn.Send("PSUBSCRIBE", channel...)
|
||||
return c.Conn.Flush()
|
||||
}
|
||||
|
||||
// Unsubscribe unsubscribes the connection from the given channels, or from all
|
||||
// of them if none is given.
|
||||
func (c PubSubConn) Unsubscribe(channel ...interface{}) error {
|
||||
c.Conn.Send("UNSUBSCRIBE", channel...)
|
||||
return c.Conn.Flush()
|
||||
}
|
||||
|
||||
// PUnsubscribe unsubscribes the connection from the given patterns, or from all
|
||||
// of them if none is given.
|
||||
func (c PubSubConn) PUnsubscribe(channel ...interface{}) error {
|
||||
c.Conn.Send("PUNSUBSCRIBE", channel...)
|
||||
return c.Conn.Flush()
|
||||
}
|
||||
|
||||
// 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.
|
||||
func (c PubSubConn) Receive() interface{} {
|
||||
reply, err := Values(c.Conn.Receive())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
var kind string
|
||||
reply, err = Scan(reply, &kind)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
switch kind {
|
||||
case "message":
|
||||
var m Message
|
||||
if _, err := Scan(reply, &m.Channel, &m.Data); err != nil {
|
||||
return err
|
||||
}
|
||||
return m
|
||||
case "pmessage":
|
||||
var pm PMessage
|
||||
if _, err := Scan(reply, &pm.Pattern, &pm.Channel, &pm.Data); err != nil {
|
||||
return err
|
||||
}
|
||||
return pm
|
||||
case "subscribe", "psubscribe", "unsubscribe", "punsubscribe":
|
||||
s := Subscription{Kind: kind}
|
||||
if _, err := Scan(reply, &s.Channel, &s.Count); err != nil {
|
||||
return err
|
||||
}
|
||||
return s
|
||||
case "pong":
|
||||
var p Pong
|
||||
if _, err := Scan(reply, &p.Data); err != nil {
|
||||
return err
|
||||
}
|
||||
return p
|
||||
}
|
||||
return errors.New("redigo: unknown pubsub notification")
|
||||
}
|
59
vendor/github.com/garyburd/redigo/redis/redis.go
generated
vendored
Normal file
59
vendor/github.com/garyburd/redigo/redis/redis.go
generated
vendored
Normal file
|
@ -0,0 +1,59 @@
|
|||
// 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)
|
||||
}
|
||||
|
||||
// Argument is implemented by types which want to control how their value is
|
||||
// interpreted when used as an argument to a redis command.
|
||||
type Argument interface {
|
||||
// RedisArg returns the interface that represents the value to be used
|
||||
// in redis commands.
|
||||
RedisArg() interface{}
|
||||
}
|
||||
|
||||
// Scanner is implemented by types which want to control how their value is
|
||||
// interpreted when read from redis.
|
||||
type Scanner interface {
|
||||
// RedisScan assigns a value from a redis value.
|
||||
//
|
||||
// An error should be returned if the value cannot be stored without
|
||||
// loss of information.
|
||||
RedisScan(src interface{}) error
|
||||
}
|
425
vendor/github.com/garyburd/redigo/redis/reply.go
generated
vendored
Normal file
425
vendor/github.com/garyburd/redigo/redis/reply.go
generated
vendored
Normal file
|
@ -0,0 +1,425 @@
|
|||
// 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"
|
||||
"fmt"
|
||||
"strconv"
|
||||
)
|
||||
|
||||
// ErrNil indicates that a reply value is nil.
|
||||
var ErrNil = errors.New("redigo: nil returned")
|
||||
|
||||
// Int is a helper that converts a command reply to an integer. If err is not
|
||||
// equal to nil, then Int returns 0, err. Otherwise, Int converts the
|
||||
// reply to an int as follows:
|
||||
//
|
||||
// Reply type Result
|
||||
// integer int(reply), nil
|
||||
// bulk string parsed reply, nil
|
||||
// nil 0, ErrNil
|
||||
// other 0, error
|
||||
func Int(reply interface{}, err error) (int, error) {
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case int64:
|
||||
x := int(reply)
|
||||
if int64(x) != reply {
|
||||
return 0, strconv.ErrRange
|
||||
}
|
||||
return x, nil
|
||||
case []byte:
|
||||
n, err := strconv.ParseInt(string(reply), 10, 0)
|
||||
return int(n), err
|
||||
case nil:
|
||||
return 0, ErrNil
|
||||
case Error:
|
||||
return 0, reply
|
||||
}
|
||||
return 0, fmt.Errorf("redigo: unexpected type for Int, got type %T", reply)
|
||||
}
|
||||
|
||||
// Int64 is a helper that converts a command reply to 64 bit integer. If err is
|
||||
// not equal to nil, then Int returns 0, err. Otherwise, Int64 converts the
|
||||
// reply to an int64 as follows:
|
||||
//
|
||||
// Reply type Result
|
||||
// integer reply, nil
|
||||
// bulk string parsed reply, nil
|
||||
// nil 0, ErrNil
|
||||
// other 0, error
|
||||
func Int64(reply interface{}, err error) (int64, error) {
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case int64:
|
||||
return reply, nil
|
||||
case []byte:
|
||||
n, err := strconv.ParseInt(string(reply), 10, 64)
|
||||
return n, err
|
||||
case nil:
|
||||
return 0, ErrNil
|
||||
case Error:
|
||||
return 0, reply
|
||||
}
|
||||
return 0, fmt.Errorf("redigo: unexpected type for Int64, got type %T", reply)
|
||||
}
|
||||
|
||||
var errNegativeInt = errors.New("redigo: unexpected value for Uint64")
|
||||
|
||||
// Uint64 is a helper that converts a command reply to 64 bit integer. If err is
|
||||
// not equal to nil, then Int returns 0, err. Otherwise, Int64 converts the
|
||||
// reply to an int64 as follows:
|
||||
//
|
||||
// Reply type Result
|
||||
// integer reply, nil
|
||||
// bulk string parsed reply, nil
|
||||
// nil 0, ErrNil
|
||||
// other 0, error
|
||||
func Uint64(reply interface{}, err error) (uint64, error) {
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case int64:
|
||||
if reply < 0 {
|
||||
return 0, errNegativeInt
|
||||
}
|
||||
return uint64(reply), nil
|
||||
case []byte:
|
||||
n, err := strconv.ParseUint(string(reply), 10, 64)
|
||||
return n, err
|
||||
case nil:
|
||||
return 0, ErrNil
|
||||
case Error:
|
||||
return 0, reply
|
||||
}
|
||||
return 0, fmt.Errorf("redigo: unexpected type for Uint64, got type %T", reply)
|
||||
}
|
||||
|
||||
// Float64 is a helper that converts a command reply to 64 bit float. If err is
|
||||
// not equal to nil, then Float64 returns 0, err. Otherwise, Float64 converts
|
||||
// the reply to an int as follows:
|
||||
//
|
||||
// Reply type Result
|
||||
// bulk string parsed reply, nil
|
||||
// nil 0, ErrNil
|
||||
// other 0, error
|
||||
func Float64(reply interface{}, err error) (float64, error) {
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case []byte:
|
||||
n, err := strconv.ParseFloat(string(reply), 64)
|
||||
return n, err
|
||||
case nil:
|
||||
return 0, ErrNil
|
||||
case Error:
|
||||
return 0, reply
|
||||
}
|
||||
return 0, fmt.Errorf("redigo: unexpected type for Float64, got type %T", reply)
|
||||
}
|
||||
|
||||
// String is a helper that converts a command reply to a string. If err is not
|
||||
// equal to nil, then String returns "", err. Otherwise String converts the
|
||||
// reply to a string as follows:
|
||||
//
|
||||
// Reply type Result
|
||||
// bulk string string(reply), nil
|
||||
// simple string reply, nil
|
||||
// nil "", ErrNil
|
||||
// other "", error
|
||||
func String(reply interface{}, err error) (string, error) {
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case []byte:
|
||||
return string(reply), nil
|
||||
case string:
|
||||
return reply, nil
|
||||
case nil:
|
||||
return "", ErrNil
|
||||
case Error:
|
||||
return "", reply
|
||||
}
|
||||
return "", fmt.Errorf("redigo: unexpected type for String, got type %T", reply)
|
||||
}
|
||||
|
||||
// Bytes is a helper that converts a command reply to a slice of bytes. If err
|
||||
// is not equal to nil, then Bytes returns nil, err. Otherwise Bytes converts
|
||||
// the reply to a slice of bytes as follows:
|
||||
//
|
||||
// Reply type Result
|
||||
// bulk string reply, nil
|
||||
// simple string []byte(reply), nil
|
||||
// nil nil, ErrNil
|
||||
// other nil, error
|
||||
func Bytes(reply interface{}, err error) ([]byte, error) {
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case []byte:
|
||||
return reply, nil
|
||||
case string:
|
||||
return []byte(reply), nil
|
||||
case nil:
|
||||
return nil, ErrNil
|
||||
case Error:
|
||||
return nil, reply
|
||||
}
|
||||
return nil, fmt.Errorf("redigo: unexpected type for Bytes, got type %T", reply)
|
||||
}
|
||||
|
||||
// Bool is a helper that converts a command reply to a boolean. If err is not
|
||||
// equal to nil, then Bool returns false, err. Otherwise Bool converts the
|
||||
// reply to boolean as follows:
|
||||
//
|
||||
// Reply type Result
|
||||
// integer value != 0, nil
|
||||
// bulk string strconv.ParseBool(reply)
|
||||
// nil false, ErrNil
|
||||
// other false, error
|
||||
func Bool(reply interface{}, err error) (bool, error) {
|
||||
if err != nil {
|
||||
return false, err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case int64:
|
||||
return reply != 0, nil
|
||||
case []byte:
|
||||
return strconv.ParseBool(string(reply))
|
||||
case nil:
|
||||
return false, ErrNil
|
||||
case Error:
|
||||
return false, reply
|
||||
}
|
||||
return false, fmt.Errorf("redigo: unexpected type for Bool, got type %T", reply)
|
||||
}
|
||||
|
||||
// MultiBulk is a helper that converts an array command reply to a []interface{}.
|
||||
//
|
||||
// Deprecated: Use Values instead.
|
||||
func MultiBulk(reply interface{}, err error) ([]interface{}, error) { return Values(reply, err) }
|
||||
|
||||
// Values is a helper that converts an array command reply to a []interface{}.
|
||||
// If err is not equal to nil, then Values returns nil, err. Otherwise, Values
|
||||
// converts the reply as follows:
|
||||
//
|
||||
// Reply type Result
|
||||
// array reply, nil
|
||||
// nil nil, ErrNil
|
||||
// other nil, error
|
||||
func Values(reply interface{}, err error) ([]interface{}, error) {
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case []interface{}:
|
||||
return reply, nil
|
||||
case nil:
|
||||
return nil, ErrNil
|
||||
case Error:
|
||||
return nil, reply
|
||||
}
|
||||
return nil, fmt.Errorf("redigo: unexpected type for Values, got type %T", reply)
|
||||
}
|
||||
|
||||
// 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)
|
||||
}
|
||||
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)
|
||||
}
|
||||
|
||||
// ByteSlices is a helper that converts an array command reply to a [][]byte.
|
||||
// If err is not equal to nil, then ByteSlices returns nil, err. Nil array
|
||||
// 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
|
||||
}
|
||||
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)
|
||||
}
|
||||
|
||||
// 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.
|
||||
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
|
||||
}
|
||||
|
||||
// StringMap is a helper that converts an array of strings (alternating key, value)
|
||||
// into a map[string]string. The HGETALL and CONFIG GET commands return replies in this format.
|
||||
// Requires an even number of values in result.
|
||||
func StringMap(result interface{}, err error) (map[string]string, error) {
|
||||
values, err := Values(result, err)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if len(values)%2 != 0 {
|
||||
return nil, errors.New("redigo: StringMap expects even number of values result")
|
||||
}
|
||||
m := make(map[string]string, len(values)/2)
|
||||
for i := 0; i < len(values); i += 2 {
|
||||
key, okKey := values[i].([]byte)
|
||||
value, okValue := values[i+1].([]byte)
|
||||
if !okKey || !okValue {
|
||||
return nil, errors.New("redigo: StringMap key not a bulk string value")
|
||||
}
|
||||
m[string(key)] = string(value)
|
||||
}
|
||||
return m, nil
|
||||
}
|
||||
|
||||
// IntMap is a helper that converts an array of strings (alternating key, value)
|
||||
// into a map[string]int. The HGETALL commands return replies in this format.
|
||||
// Requires an even number of values in result.
|
||||
func IntMap(result interface{}, err error) (map[string]int, error) {
|
||||
values, err := Values(result, err)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if len(values)%2 != 0 {
|
||||
return nil, errors.New("redigo: IntMap expects even number of values result")
|
||||
}
|
||||
m := make(map[string]int, len(values)/2)
|
||||
for i := 0; i < len(values); i += 2 {
|
||||
key, ok := values[i].([]byte)
|
||||
if !ok {
|
||||
return nil, errors.New("redigo: IntMap key not a bulk string value")
|
||||
}
|
||||
value, err := Int(values[i+1], nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
m[string(key)] = value
|
||||
}
|
||||
return m, nil
|
||||
}
|
||||
|
||||
// Int64Map is a helper that converts an array of strings (alternating key, value)
|
||||
// into a map[string]int64. The HGETALL commands return replies in this format.
|
||||
// Requires an even number of values in result.
|
||||
func Int64Map(result interface{}, err error) (map[string]int64, error) {
|
||||
values, err := Values(result, err)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if len(values)%2 != 0 {
|
||||
return nil, errors.New("redigo: Int64Map expects even number of values result")
|
||||
}
|
||||
m := make(map[string]int64, len(values)/2)
|
||||
for i := 0; i < len(values); i += 2 {
|
||||
key, ok := values[i].([]byte)
|
||||
if !ok {
|
||||
return nil, errors.New("redigo: Int64Map key not a bulk string value")
|
||||
}
|
||||
value, err := Int64(values[i+1], nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
m[string(key)] = value
|
||||
}
|
||||
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
|
||||
}
|
585
vendor/github.com/garyburd/redigo/redis/scan.go
generated
vendored
Normal file
585
vendor/github.com/garyburd/redigo/redis/scan.go
generated
vendored
Normal file
|
@ -0,0 +1,585 @@
|
|||
// 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"
|
||||
"fmt"
|
||||
"reflect"
|
||||
"strconv"
|
||||
"strings"
|
||||
"sync"
|
||||
)
|
||||
|
||||
func ensureLen(d reflect.Value, n int) {
|
||||
if n > d.Cap() {
|
||||
d.Set(reflect.MakeSlice(d.Type(), n, n))
|
||||
} else {
|
||||
d.SetLen(n)
|
||||
}
|
||||
}
|
||||
|
||||
func cannotConvert(d reflect.Value, s interface{}) error {
|
||||
var sname string
|
||||
switch s.(type) {
|
||||
case string:
|
||||
sname = "Redis simple string"
|
||||
case Error:
|
||||
sname = "Redis error"
|
||||
case int64:
|
||||
sname = "Redis integer"
|
||||
case []byte:
|
||||
sname = "Redis bulk string"
|
||||
case []interface{}:
|
||||
sname = "Redis array"
|
||||
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) {
|
||||
switch d.Type().Kind() {
|
||||
case reflect.Float32, reflect.Float64:
|
||||
var x float64
|
||||
x, err = strconv.ParseFloat(string(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())
|
||||
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())
|
||||
d.SetUint(x)
|
||||
case reflect.Bool:
|
||||
var x bool
|
||||
x, err = strconv.ParseBool(string(s))
|
||||
d.SetBool(x)
|
||||
case reflect.String:
|
||||
d.SetString(string(s))
|
||||
case reflect.Slice:
|
||||
if d.Type().Elem().Kind() != reflect.Uint8 {
|
||||
err = cannotConvert(d, s)
|
||||
} else {
|
||||
d.SetBytes(s)
|
||||
}
|
||||
default:
|
||||
err = cannotConvert(d, s)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func convertAssignInt(d reflect.Value, s int64) (err error) {
|
||||
switch d.Type().Kind() {
|
||||
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
||||
d.SetInt(s)
|
||||
if d.Int() != s {
|
||||
err = strconv.ErrRange
|
||||
d.SetInt(0)
|
||||
}
|
||||
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
|
||||
if s < 0 {
|
||||
err = strconv.ErrRange
|
||||
} else {
|
||||
x := uint64(s)
|
||||
d.SetUint(x)
|
||||
if d.Uint() != x {
|
||||
err = strconv.ErrRange
|
||||
d.SetUint(0)
|
||||
}
|
||||
}
|
||||
case reflect.Bool:
|
||||
d.SetBool(s != 0)
|
||||
default:
|
||||
err = cannotConvert(d, s)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
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)
|
||||
default:
|
||||
err = cannotConvert(d, s)
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
func convertAssignArray(d reflect.Value, s []interface{}) error {
|
||||
if d.Type().Kind() != reflect.Slice {
|
||||
return cannotConvert(d, s)
|
||||
}
|
||||
ensureLen(d, len(s))
|
||||
for i := 0; i < len(s); i++ {
|
||||
if err := convertAssignValue(d.Index(i), s[i]); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
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:
|
||||
// ignore
|
||||
case []byte:
|
||||
switch d := d.(type) {
|
||||
case *string:
|
||||
*d = string(s)
|
||||
case *int:
|
||||
*d, err = strconv.Atoi(string(s))
|
||||
case *bool:
|
||||
*d, err = strconv.ParseBool(string(s))
|
||||
case *[]byte:
|
||||
*d = s
|
||||
case *interface{}:
|
||||
*d = s
|
||||
case nil:
|
||||
// skip value
|
||||
default:
|
||||
if d := reflect.ValueOf(d); d.Type().Kind() != reflect.Ptr {
|
||||
err = cannotConvert(d, s)
|
||||
} else {
|
||||
err = convertAssignBulkString(d.Elem(), s)
|
||||
}
|
||||
}
|
||||
case int64:
|
||||
switch d := d.(type) {
|
||||
case *int:
|
||||
x := int(s)
|
||||
if int64(x) != s {
|
||||
err = strconv.ErrRange
|
||||
x = 0
|
||||
}
|
||||
*d = x
|
||||
case *bool:
|
||||
*d = s != 0
|
||||
case *interface{}:
|
||||
*d = s
|
||||
case nil:
|
||||
// skip value
|
||||
default:
|
||||
if d := reflect.ValueOf(d); d.Type().Kind() != reflect.Ptr {
|
||||
err = cannotConvert(d, s)
|
||||
} else {
|
||||
err = convertAssignInt(d.Elem(), s)
|
||||
}
|
||||
}
|
||||
case string:
|
||||
switch d := d.(type) {
|
||||
case *string:
|
||||
*d = s
|
||||
case *interface{}:
|
||||
*d = s
|
||||
case nil:
|
||||
// skip value
|
||||
default:
|
||||
err = cannotConvert(reflect.ValueOf(d), s)
|
||||
}
|
||||
case []interface{}:
|
||||
switch d := d.(type) {
|
||||
case *[]interface{}:
|
||||
*d = s
|
||||
case *interface{}:
|
||||
*d = s
|
||||
case nil:
|
||||
// skip value
|
||||
default:
|
||||
if d := reflect.ValueOf(d); d.Type().Kind() != reflect.Ptr {
|
||||
err = cannotConvert(d, s)
|
||||
} else {
|
||||
err = convertAssignArray(d.Elem(), s)
|
||||
}
|
||||
}
|
||||
case Error:
|
||||
err = s
|
||||
default:
|
||||
err = cannotConvert(reflect.ValueOf(d), s)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// 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.
|
||||
//
|
||||
// If a dest value is nil, then the corresponding src value is skipped.
|
||||
//
|
||||
// If a src element is nil, then the corresponding dest value is not modified.
|
||||
//
|
||||
// To enable easy use of Scan in a loop, Scan returns the slice of src
|
||||
// following the copied values.
|
||||
func Scan(src []interface{}, dest ...interface{}) ([]interface{}, error) {
|
||||
if len(src) < len(dest) {
|
||||
return nil, errors.New("redigo.Scan: array short")
|
||||
}
|
||||
var err error
|
||||
for i, d := range dest {
|
||||
err = convertAssign(d, src[i])
|
||||
if err != nil {
|
||||
err = fmt.Errorf("redigo.Scan: cannot assign to dest %d: %v", i, err)
|
||||
break
|
||||
}
|
||||
}
|
||||
return src[len(dest):], err
|
||||
}
|
||||
|
||||
type fieldSpec struct {
|
||||
name string
|
||||
index []int
|
||||
omitEmpty bool
|
||||
}
|
||||
|
||||
type structSpec struct {
|
||||
m map[string]*fieldSpec
|
||||
l []*fieldSpec
|
||||
}
|
||||
|
||||
func (ss *structSpec) fieldSpec(name []byte) *fieldSpec {
|
||||
return ss.m[string(name)]
|
||||
}
|
||||
|
||||
func compileStructSpec(t reflect.Type, depth map[string]int, index []int, ss *structSpec) {
|
||||
for i := 0; i < t.NumField(); i++ {
|
||||
f := t.Field(i)
|
||||
switch {
|
||||
case f.PkgPath != "" && !f.Anonymous:
|
||||
// Ignore unexported fields.
|
||||
case f.Anonymous:
|
||||
// TODO: Handle pointers. Requires change to decoder and
|
||||
// protection against infinite recursion.
|
||||
if f.Type.Kind() == reflect.Struct {
|
||||
compileStructSpec(f.Type, depth, append(index, i), ss)
|
||||
}
|
||||
default:
|
||||
fs := &fieldSpec{name: f.Name}
|
||||
tag := f.Tag.Get("redis")
|
||||
p := strings.Split(tag, ",")
|
||||
if len(p) > 0 {
|
||||
if p[0] == "-" {
|
||||
continue
|
||||
}
|
||||
if len(p[0]) > 0 {
|
||||
fs.name = p[0]
|
||||
}
|
||||
for _, s := range p[1:] {
|
||||
switch s {
|
||||
case "omitempty":
|
||||
fs.omitEmpty = true
|
||||
default:
|
||||
panic(fmt.Errorf("redigo: unknown field tag %s for type %s", s, t.Name()))
|
||||
}
|
||||
}
|
||||
}
|
||||
d, found := depth[fs.name]
|
||||
if !found {
|
||||
d = 1 << 30
|
||||
}
|
||||
switch {
|
||||
case len(index) == d:
|
||||
// At same depth, remove from result.
|
||||
delete(ss.m, fs.name)
|
||||
j := 0
|
||||
for i := 0; i < len(ss.l); i++ {
|
||||
if fs.name != ss.l[i].name {
|
||||
ss.l[j] = ss.l[i]
|
||||
j += 1
|
||||
}
|
||||
}
|
||||
ss.l = ss.l[:j]
|
||||
case len(index) < d:
|
||||
fs.index = make([]int, len(index)+1)
|
||||
copy(fs.index, index)
|
||||
fs.index[len(index)] = i
|
||||
depth[fs.name] = len(index)
|
||||
ss.m[fs.name] = fs
|
||||
ss.l = append(ss.l, fs)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var (
|
||||
structSpecMutex sync.RWMutex
|
||||
structSpecCache = make(map[reflect.Type]*structSpec)
|
||||
defaultFieldSpec = &fieldSpec{}
|
||||
)
|
||||
|
||||
func structSpecForType(t reflect.Type) *structSpec {
|
||||
|
||||
structSpecMutex.RLock()
|
||||
ss, found := structSpecCache[t]
|
||||
structSpecMutex.RUnlock()
|
||||
if found {
|
||||
return ss
|
||||
}
|
||||
|
||||
structSpecMutex.Lock()
|
||||
defer structSpecMutex.Unlock()
|
||||
ss, found = structSpecCache[t]
|
||||
if found {
|
||||
return ss
|
||||
}
|
||||
|
||||
ss = &structSpec{m: make(map[string]*fieldSpec)}
|
||||
compileStructSpec(t, make(map[string]int), nil, ss)
|
||||
structSpecCache[t] = ss
|
||||
return ss
|
||||
}
|
||||
|
||||
var errScanStructValue = errors.New("redigo.ScanStruct: value must be non-nil pointer to a struct")
|
||||
|
||||
// ScanStruct scans alternating names and values from src to a struct. The
|
||||
// HGETALL and CONFIG GET commands return replies in this format.
|
||||
//
|
||||
// ScanStruct uses exported field names to match values in the response. Use
|
||||
// 'redis' field tag to override the name:
|
||||
//
|
||||
// Field int `redis:"myName"`
|
||||
//
|
||||
// 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.
|
||||
//
|
||||
// If a src element is nil, then the corresponding field is not modified.
|
||||
func ScanStruct(src []interface{}, dest interface{}) error {
|
||||
d := reflect.ValueOf(dest)
|
||||
if d.Kind() != reflect.Ptr || d.IsNil() {
|
||||
return errScanStructValue
|
||||
}
|
||||
d = d.Elem()
|
||||
if d.Kind() != reflect.Struct {
|
||||
return errScanStructValue
|
||||
}
|
||||
ss := structSpecForType(d.Type())
|
||||
|
||||
if len(src)%2 != 0 {
|
||||
return errors.New("redigo.ScanStruct: number of values not a multiple of 2")
|
||||
}
|
||||
|
||||
for i := 0; i < len(src); i += 2 {
|
||||
s := src[i+1]
|
||||
if s == nil {
|
||||
continue
|
||||
}
|
||||
name, ok := src[i].([]byte)
|
||||
if !ok {
|
||||
return fmt.Errorf("redigo.ScanStruct: key %d not a bulk string value", i)
|
||||
}
|
||||
fs := ss.fieldSpec(name)
|
||||
if fs == nil {
|
||||
continue
|
||||
}
|
||||
if err := convertAssignValue(d.FieldByIndex(fs.index), s); err != nil {
|
||||
return fmt.Errorf("redigo.ScanStruct: cannot assign field %s: %v", fs.name, err)
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
var (
|
||||
errScanSliceValue = errors.New("redigo.ScanSlice: dest must be non-nil pointer to a struct")
|
||||
)
|
||||
|
||||
// ScanSlice scans src to the slice pointed to by dest. The elements the dest
|
||||
// slice must be integer, float, boolean, string, struct or pointer to struct
|
||||
// values.
|
||||
//
|
||||
// Struct fields must be integer, float, boolean or string values. All struct
|
||||
// fields are used unless a subset is specified using fieldNames.
|
||||
func ScanSlice(src []interface{}, dest interface{}, fieldNames ...string) error {
|
||||
d := reflect.ValueOf(dest)
|
||||
if d.Kind() != reflect.Ptr || d.IsNil() {
|
||||
return errScanSliceValue
|
||||
}
|
||||
d = d.Elem()
|
||||
if d.Kind() != reflect.Slice {
|
||||
return errScanSliceValue
|
||||
}
|
||||
|
||||
isPtr := false
|
||||
t := d.Type().Elem()
|
||||
if t.Kind() == reflect.Ptr && t.Elem().Kind() == reflect.Struct {
|
||||
isPtr = true
|
||||
t = t.Elem()
|
||||
}
|
||||
|
||||
if t.Kind() != reflect.Struct {
|
||||
ensureLen(d, len(src))
|
||||
for i, s := range src {
|
||||
if s == nil {
|
||||
continue
|
||||
}
|
||||
if err := convertAssignValue(d.Index(i), s); err != nil {
|
||||
return fmt.Errorf("redigo.ScanSlice: cannot assign element %d: %v", i, err)
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
ss := structSpecForType(t)
|
||||
fss := ss.l
|
||||
if len(fieldNames) > 0 {
|
||||
fss = make([]*fieldSpec, len(fieldNames))
|
||||
for i, name := range fieldNames {
|
||||
fss[i] = ss.m[name]
|
||||
if fss[i] == nil {
|
||||
return fmt.Errorf("redigo.ScanSlice: ScanSlice bad field name %s", name)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if len(fss) == 0 {
|
||||
return errors.New("redigo.ScanSlice: no struct fields")
|
||||
}
|
||||
|
||||
n := len(src) / len(fss)
|
||||
if n*len(fss) != len(src) {
|
||||
return errors.New("redigo.ScanSlice: length not a multiple of struct field count")
|
||||
}
|
||||
|
||||
ensureLen(d, n)
|
||||
for i := 0; i < n; i++ {
|
||||
d := d.Index(i)
|
||||
if isPtr {
|
||||
if d.IsNil() {
|
||||
d.Set(reflect.New(t))
|
||||
}
|
||||
d = d.Elem()
|
||||
}
|
||||
for j, fs := range fss {
|
||||
s := src[i*len(fss)+j]
|
||||
if s == nil {
|
||||
continue
|
||||
}
|
||||
if err := convertAssignValue(d.FieldByIndex(fs.index), s); err != nil {
|
||||
return fmt.Errorf("redigo.ScanSlice: cannot assign element %d to field %s: %v", i*len(fss)+j, fs.name, err)
|
||||
}
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Args is a helper for constructing command arguments from structured values.
|
||||
type Args []interface{}
|
||||
|
||||
// Add returns the result of appending value to args.
|
||||
func (args Args) Add(value ...interface{}) Args {
|
||||
return append(args, value...)
|
||||
}
|
||||
|
||||
// AddFlat returns the result of appending the flattened value of v to args.
|
||||
//
|
||||
// Maps are flattened by appending the alternating keys and map values to args.
|
||||
//
|
||||
// Slices are flattened by appending the slice elements to args.
|
||||
//
|
||||
// Structs are flattened by appending the alternating names and values of
|
||||
// exported fields to args. If v is a nil struct pointer, then nothing is
|
||||
// appended. The 'redis' field tag overrides struct field names. See ScanStruct
|
||||
// for more information on the use of the 'redis' field tag.
|
||||
//
|
||||
// Other types are appended to args as is.
|
||||
func (args Args) AddFlat(v interface{}) Args {
|
||||
rv := reflect.ValueOf(v)
|
||||
switch rv.Kind() {
|
||||
case reflect.Struct:
|
||||
args = flattenStruct(args, rv)
|
||||
case reflect.Slice:
|
||||
for i := 0; i < rv.Len(); i++ {
|
||||
args = append(args, rv.Index(i).Interface())
|
||||
}
|
||||
case reflect.Map:
|
||||
for _, k := range rv.MapKeys() {
|
||||
args = append(args, k.Interface(), rv.MapIndex(k).Interface())
|
||||
}
|
||||
case reflect.Ptr:
|
||||
if rv.Type().Elem().Kind() == reflect.Struct {
|
||||
if !rv.IsNil() {
|
||||
args = flattenStruct(args, rv.Elem())
|
||||
}
|
||||
} else {
|
||||
args = append(args, v)
|
||||
}
|
||||
default:
|
||||
args = append(args, v)
|
||||
}
|
||||
return args
|
||||
}
|
||||
|
||||
func flattenStruct(args Args, v reflect.Value) Args {
|
||||
ss := structSpecForType(v.Type())
|
||||
for _, fs := range ss.l {
|
||||
fv := v.FieldByIndex(fs.index)
|
||||
if fs.omitEmpty {
|
||||
var empty = false
|
||||
switch fv.Kind() {
|
||||
case reflect.Array, reflect.Map, reflect.Slice, reflect.String:
|
||||
empty = fv.Len() == 0
|
||||
case reflect.Bool:
|
||||
empty = !fv.Bool()
|
||||
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
||||
empty = fv.Int() == 0
|
||||
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
|
||||
empty = fv.Uint() == 0
|
||||
case reflect.Float32, reflect.Float64:
|
||||
empty = fv.Float() == 0
|
||||
case reflect.Interface, reflect.Ptr:
|
||||
empty = fv.IsNil()
|
||||
}
|
||||
if empty {
|
||||
continue
|
||||
}
|
||||
}
|
||||
args = append(args, fs.name, fv.Interface())
|
||||
}
|
||||
return args
|
||||
}
|
91
vendor/github.com/garyburd/redigo/redis/script.go
generated
vendored
Normal file
91
vendor/github.com/garyburd/redigo/redis/script.go
generated
vendored
Normal file
|
@ -0,0 +1,91 @@
|
|||
// 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 (
|
||||
"crypto/sha1"
|
||||
"encoding/hex"
|
||||
"io"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// Script encapsulates the source, hash and key count for a Lua script. See
|
||||
// http://redis.io/commands/eval for information on scripts in Redis.
|
||||
type Script struct {
|
||||
keyCount int
|
||||
src string
|
||||
hash string
|
||||
}
|
||||
|
||||
// NewScript returns a new script object. If keyCount is greater than or equal
|
||||
// to zero, then the count is automatically inserted in the EVAL command
|
||||
// argument list. If keyCount is less than zero, then the application supplies
|
||||
// the count as the first value in the keysAndArgs argument to the Do, Send and
|
||||
// SendHash methods.
|
||||
func NewScript(keyCount int, src string) *Script {
|
||||
h := sha1.New()
|
||||
io.WriteString(h, src)
|
||||
return &Script{keyCount, src, hex.EncodeToString(h.Sum(nil))}
|
||||
}
|
||||
|
||||
func (s *Script) args(spec string, keysAndArgs []interface{}) []interface{} {
|
||||
var args []interface{}
|
||||
if s.keyCount < 0 {
|
||||
args = make([]interface{}, 1+len(keysAndArgs))
|
||||
args[0] = spec
|
||||
copy(args[1:], keysAndArgs)
|
||||
} else {
|
||||
args = make([]interface{}, 2+len(keysAndArgs))
|
||||
args[0] = spec
|
||||
args[1] = s.keyCount
|
||||
copy(args[2:], keysAndArgs)
|
||||
}
|
||||
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
|
||||
// causing the script to load).
|
||||
func (s *Script) Do(c Conn, keysAndArgs ...interface{}) (interface{}, error) {
|
||||
v, err := c.Do("EVALSHA", s.args(s.hash, keysAndArgs)...)
|
||||
if e, ok := err.(Error); ok && strings.HasPrefix(string(e), "NOSCRIPT ") {
|
||||
v, err = c.Do("EVAL", s.args(s.src, keysAndArgs)...)
|
||||
}
|
||||
return v, err
|
||||
}
|
||||
|
||||
// SendHash evaluates the script without waiting for the reply. The script is
|
||||
// evaluated with the EVALSHA command. The application must ensure that the
|
||||
// script is loaded by a previous call to Send, Do or Load methods.
|
||||
func (s *Script) SendHash(c Conn, keysAndArgs ...interface{}) error {
|
||||
return c.Send("EVALSHA", s.args(s.hash, keysAndArgs)...)
|
||||
}
|
||||
|
||||
// Send evaluates the script without waiting for the reply.
|
||||
func (s *Script) Send(c Conn, keysAndArgs ...interface{}) error {
|
||||
return c.Send("EVAL", s.args(s.src, keysAndArgs)...)
|
||||
}
|
||||
|
||||
// Load loads the script without evaluating it.
|
||||
func (s *Script) Load(c Conn) error {
|
||||
_, err := c.Do("SCRIPT", "LOAD", s.src)
|
||||
return err
|
||||
}
|
47
vendor/github.com/gregjones/httpcache/httpcache.go
generated
vendored
47
vendor/github.com/gregjones/httpcache/httpcache.go
generated
vendored
|
@ -11,6 +11,8 @@ import (
|
|||
"bytes"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"net/http"
|
||||
"net/http/httputil"
|
||||
"strings"
|
||||
|
@ -227,10 +229,26 @@ func (t *Transport) RoundTrip(req *http.Request) (resp *http.Response, err error
|
|||
resp.Header.Set(fakeHeader, reqValue)
|
||||
}
|
||||
}
|
||||
switch req.Method {
|
||||
case "GET":
|
||||
// Delay caching until EOF is reached.
|
||||
resp.Body = &cachingReadCloser{
|
||||
R: resp.Body,
|
||||
OnEOF: func(r io.Reader) {
|
||||
resp := *resp
|
||||
resp.Body = ioutil.NopCloser(r)
|
||||
respBytes, err := httputil.DumpResponse(&resp, true)
|
||||
if err == nil {
|
||||
t.Cache.Set(cacheKey, respBytes)
|
||||
}
|
||||
},
|
||||
}
|
||||
default:
|
||||
respBytes, err := httputil.DumpResponse(resp, true)
|
||||
if err == nil {
|
||||
t.Cache.Set(cacheKey, respBytes)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
t.Cache.Delete(cacheKey)
|
||||
}
|
||||
|
@ -498,6 +516,35 @@ func headerAllCommaSepValues(headers http.Header, name string) []string {
|
|||
return vals
|
||||
}
|
||||
|
||||
// cachingReadCloser is a wrapper around ReadCloser R that calls OnEOF
|
||||
// handler with a full copy of the content read from R when EOF is
|
||||
// reached.
|
||||
type cachingReadCloser struct {
|
||||
// Underlying ReadCloser.
|
||||
R io.ReadCloser
|
||||
// OnEOF is called with a copy of the content of R when EOF is reached.
|
||||
OnEOF func(io.Reader)
|
||||
|
||||
buf bytes.Buffer // buf stores a copy of the content of R.
|
||||
}
|
||||
|
||||
// Read reads the next len(p) bytes from R or until R is drained. The
|
||||
// return value n is the number of bytes read. If R has no data to
|
||||
// return, err is io.EOF and OnEOF is called with a full copy of what
|
||||
// has been read so far.
|
||||
func (r *cachingReadCloser) Read(p []byte) (n int, err error) {
|
||||
n, err = r.R.Read(p)
|
||||
r.buf.Write(p[:n])
|
||||
if err == io.EOF {
|
||||
r.OnEOF(bytes.NewReader(r.buf.Bytes()))
|
||||
}
|
||||
return n, err
|
||||
}
|
||||
|
||||
func (r *cachingReadCloser) Close() error {
|
||||
return r.R.Close()
|
||||
}
|
||||
|
||||
// NewMemoryCacheTransport returns a new Transport using the in-memory cache implementation
|
||||
func NewMemoryCacheTransport() *Transport {
|
||||
c := NewMemoryCache()
|
||||
|
|
43
vendor/github.com/gregjones/httpcache/redis/redis.go
generated
vendored
Normal file
43
vendor/github.com/gregjones/httpcache/redis/redis.go
generated
vendored
Normal file
|
@ -0,0 +1,43 @@
|
|||
// Package redis provides a redis interface for http caching.
|
||||
package redis
|
||||
|
||||
import (
|
||||
"github.com/garyburd/redigo/redis"
|
||||
"github.com/gregjones/httpcache"
|
||||
)
|
||||
|
||||
// cache is an implementation of httpcache.Cache that caches responses in a
|
||||
// redis server.
|
||||
type cache struct {
|
||||
redis.Conn
|
||||
}
|
||||
|
||||
// cacheKey modifies an httpcache key for use in redis. Specifically, it
|
||||
// prefixes keys to avoid collision with other data stored in redis.
|
||||
func cacheKey(key string) string {
|
||||
return "rediscache:" + key
|
||||
}
|
||||
|
||||
// Get returns the response corresponding to key if present.
|
||||
func (c cache) Get(key string) (resp []byte, ok bool) {
|
||||
item, err := redis.Bytes(c.Do("GET", cacheKey(key)))
|
||||
if err != nil {
|
||||
return nil, false
|
||||
}
|
||||
return item, true
|
||||
}
|
||||
|
||||
// Set saves a response to the cache as key.
|
||||
func (c cache) Set(key string, resp []byte) {
|
||||
c.Do("SET", cacheKey(key), resp)
|
||||
}
|
||||
|
||||
// Delete removes the response with key from the cache.
|
||||
func (c cache) Delete(key string) {
|
||||
c.Do("DEL", cacheKey(key))
|
||||
}
|
||||
|
||||
// NewWithClient returns a new Cache with the given redis connection.
|
||||
func NewWithClient(client redis.Conn) httpcache.Cache {
|
||||
return cache{client}
|
||||
}
|
24
vendor/vendor.json
vendored
24
vendor/vendor.json
vendored
|
@ -92,6 +92,18 @@
|
|||
"revision": "ac27d1805a555e1754fa177216ee07f4e63c30b5",
|
||||
"revisionTime": "2017-03-19T14:47:19Z"
|
||||
},
|
||||
{
|
||||
"checksumSHA1": "2UmMbNHc8FBr98mJFN1k8ISOIHk=",
|
||||
"path": "github.com/garyburd/redigo/internal",
|
||||
"revision": "b925df3cc15d8646e9b5b333ebaf3011385aba11",
|
||||
"revisionTime": "2017-08-14T17:23:35Z"
|
||||
},
|
||||
{
|
||||
"checksumSHA1": "zxm1ahSCAclqI4JIvyuRbytF2pA=",
|
||||
"path": "github.com/garyburd/redigo/redis",
|
||||
"revision": "b925df3cc15d8646e9b5b333ebaf3011385aba11",
|
||||
"revisionTime": "2017-08-14T17:23:35Z"
|
||||
},
|
||||
{
|
||||
"checksumSHA1": "HmbftipkadrLlCfzzVQ+iFHbl6g=",
|
||||
"path": "github.com/golang/glog",
|
||||
|
@ -147,10 +159,10 @@
|
|||
"revisionTime": "2017-08-24T00:14:41Z"
|
||||
},
|
||||
{
|
||||
"checksumSHA1": "89AgVeQ6dU0XqFSgYG+fQ5rqp/8=",
|
||||
"checksumSHA1": "oiAXz4eNo8+dtIxI5Rw9hZ0L4h0=",
|
||||
"path": "github.com/gregjones/httpcache",
|
||||
"revision": "0d2297f241a3503b4d464cd434e6d1490ec76e9a",
|
||||
"revisionTime": "2017-04-24T21:01:39Z"
|
||||
"revision": "787624de3eb7bd915c329cba748687a3b22666a6",
|
||||
"revisionTime": "2017-07-28T04:18:50Z"
|
||||
},
|
||||
{
|
||||
"checksumSHA1": "A+TX1jxqy7iWvcb9ZldoG1b5SsY=",
|
||||
|
@ -158,6 +170,12 @@
|
|||
"revision": "0d2297f241a3503b4d464cd434e6d1490ec76e9a",
|
||||
"revisionTime": "2017-04-24T21:01:39Z"
|
||||
},
|
||||
{
|
||||
"checksumSHA1": "wUtgc8prI1FSfPlueFHtw2EQNDo=",
|
||||
"path": "github.com/gregjones/httpcache/redis",
|
||||
"revision": "787624de3eb7bd915c329cba748687a3b22666a6",
|
||||
"revisionTime": "2017-07-28T04:18:50Z"
|
||||
},
|
||||
{
|
||||
"checksumSHA1": "Th+zE6hHI4jpczGj+JNsqDJrJgI=",
|
||||
"path": "github.com/kr/http/transport",
|
||||
|
|
Loading…
Reference in a new issue