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Update fluent-logger-golang to v1.2.0. 

Fix race condition issue to solve an issue about "panic: runtime error: invalid memory address or nil pointer dereference".
This fix stabilize Docker daemon under the situation of communication problem with Fluentd processes.

Signed-off-by: Satoshi Tagomori <tagomoris@gmail.com>
This commit is contained in:
Satoshi Tagomori 2016-09-20 20:31:22 +09:00
parent a43691d645
commit 87124b9d62
3 changed files with 309 additions and 80 deletions
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2
hack/vendor.sh
View File

@ -119,7 +119,7 @@ clone git github.com/golang/protobuf 3c84672111d91bb5ac31719e112f9f7126a0e26e
# gelf logging driver deps
clone git github.com/Graylog2/go-gelf aab2f594e4585d43468ac57287b0dece9d806883
clone git github.com/fluent/fluent-logger-golang v1.1.0
clone git github.com/fluent/fluent-logger-golang v1.2.0
# fluent-logger-golang deps
clone git github.com/philhofer/fwd 899e4efba8eaa1fea74175308f3fae18ff3319fa
clone git github.com/tinylib/msgp 75ee40d2601edf122ef667e2a07d600d4c44490c

209
vendor/src/github.com/fluent/fluent-logger-golang/LICENSE vendored
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@ -1,13 +1,202 @@
Copyright (c) 2013 Tatsuo Kaniwa
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
Apache License
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http://www.apache.org/licenses/LICENSE-2.0
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See the License for the specific language governing permissions and
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178
vendor/src/github.com/fluent/fluent-logger-golang/fluent/fluent.go vendored
View File

@ -1,6 +1,7 @@
package fluent
import (
"encoding/json"
"errors"
"fmt"
"io"
@ -25,24 +26,28 @@ const (
)
type Config struct {
FluentPort int
FluentHost string
FluentNetwork string
FluentSocketPath string
Timeout time.Duration
BufferLimit int
RetryWait int
MaxRetry int
TagPrefix string
AsyncConnect bool
FluentPort int `json:"fluent_port"`
FluentHost string `json:"fluent_host"`
FluentNetwork string `json:"fluent_network"`
FluentSocketPath string `json:"fluent_socket_path"`
Timeout time.Duration `json:"timeout"`
BufferLimit int `json:"buffer_limit"`
RetryWait int `json:"retry_wait"`
MaxRetry int `json:"max_retry"`
TagPrefix string `json:"tag_prefix"`
AsyncConnect bool `json:"async_connect"`
MarshalAsJSON bool `json:"marshal_as_json"`
}
type Fluent struct {
Config
mubuff sync.Mutex
pending []byte
muconn sync.Mutex
conn io.WriteCloser
pending []byte
reconnecting bool
mu sync.Mutex
}
// New creates a new Logger.
@ -140,9 +145,9 @@ func (f *Fluent) PostWithTime(tag string, tm time.Time, message interface{}) err
}
if msgtype.Kind() != reflect.Map {
return errors.New("messge must be a map")
return errors.New("fluent#PostWithTime: message must be a map")
} else if msgtype.Key().Kind() != reflect.String {
return errors.New("map keys must be strings")
return errors.New("fluent#PostWithTime: map keys must be strings")
}
kv := make(map[string]interface{})
@ -154,33 +159,54 @@ func (f *Fluent) PostWithTime(tag string, tm time.Time, message interface{}) err
}
func (f *Fluent) EncodeAndPostData(tag string, tm time.Time, message interface{}) error {
if data, dumperr := f.EncodeData(tag, tm, message); dumperr != nil {
return fmt.Errorf("fluent#EncodeAndPostData: can't convert '%s' to msgpack:%s", message, dumperr)
// fmt.Println("fluent#Post: can't convert to msgpack:", message, dumperr)
} else {
f.PostRawData(data)
return nil
var data []byte
var err error
if data, err = f.EncodeData(tag, tm, message); err != nil {
return fmt.Errorf("fluent#EncodeAndPostData: can't convert '%#v' to msgpack:%v", message, err)
}
return f.postRawData(data)
}
// Deprecated: Use EncodeAndPostData instead
func (f *Fluent) PostRawData(data []byte) {
f.mu.Lock()
f.pending = append(f.pending, data...)
f.mu.Unlock()
f.postRawData(data)
}
func (f *Fluent) postRawData(data []byte) error {
if err := f.appendBuffer(data); err != nil {
return err
}
if err := f.send(); err != nil {
f.close()
if len(f.pending) > f.Config.BufferLimit {
f.flushBuffer()
}
} else {
f.flushBuffer()
return err
}
return nil
}
// For sending forward protocol adopted JSON
type MessageChunk struct {
message Message
}
// Golang default marshaler does not support
// ["value", "value2", {"key":"value"}] style marshaling.
// So, it should write JSON marshaler by hand.
func (chunk *MessageChunk) MarshalJSON() ([]byte, error) {
data, err := json.Marshal(chunk.message.Record)
return []byte(fmt.Sprintf("[\"%s\",%d,%s,null]", chunk.message.Tag,
chunk.message.Time, data)), err
}
func (f *Fluent) EncodeData(tag string, tm time.Time, message interface{}) (data []byte, err error) {
timeUnix := tm.Unix()
msg := &Message{Tag: tag, Time: timeUnix, Record: message}
data, err = msg.MarshalMsg(nil)
if f.Config.MarshalAsJSON {
msg := Message{Tag: tag, Time: timeUnix, Record: message}
chunk := &MessageChunk{message: msg}
data, err = json.Marshal(chunk)
} else {
msg := &Message{Tag: tag, Time: timeUnix, Record: message}
data, err = msg.MarshalMsg(nil)
}
return
}
@ -193,23 +219,32 @@ func (f *Fluent) Close() (err error) {
return
}
// close closes the connection.
func (f *Fluent) close() (err error) {
if f.conn != nil {
f.mu.Lock()
defer f.mu.Unlock()
} else {
return
// appendBuffer appends data to buffer with lock.
func (f *Fluent) appendBuffer(data []byte) error {
f.mubuff.Lock()
defer f.mubuff.Unlock()
if len(f.pending)+len(data) > f.Config.BufferLimit {
return errors.New(fmt.Sprintf("fluent#appendBuffer: Buffer full, limit %v", f.Config.BufferLimit))
}
f.pending = append(f.pending, data...)
return nil
}
// close closes the connection.
func (f *Fluent) close() {
f.muconn.Lock()
if f.conn != nil {
f.conn.Close()
f.conn = nil
}
return
f.muconn.Unlock()
}
// connect establishes a new connection using the specified transport.
func (f *Fluent) connect() (err error) {
f.muconn.Lock()
defer f.muconn.Unlock()
switch f.Config.FluentNetwork {
case "tcp":
f.conn, err = net.DialTimeout(f.Config.FluentNetwork, f.Config.FluentHost+":"+strconv.Itoa(f.Config.FluentPort), f.Config.Timeout)
@ -218,6 +253,10 @@ func (f *Fluent) connect() (err error) {
default:
err = net.UnknownNetworkError(f.Config.FluentNetwork)
}
if err != nil {
f.reconnecting = false
}
return
}
@ -226,44 +265,45 @@ func e(x, y float64) int {
}
func (f *Fluent) reconnect() {
go func() {
for i := 0; ; i++ {
err := f.connect()
if err == nil {
f.mu.Lock()
f.reconnecting = false
f.mu.Unlock()
break
} else {
if i == f.Config.MaxRetry {
panic("fluent#reconnect: failed to reconnect!")
}
waitTime := f.Config.RetryWait * e(defaultReconnectWaitIncreRate, float64(i-1))
time.Sleep(time.Duration(waitTime) * time.Millisecond)
}
for i := 0; ; i++ {
err := f.connect()
if err == nil {
f.send()
return
}
}()
if i == f.Config.MaxRetry {
// TODO: What we can do when connection failed MaxRetry times?
panic("fluent#reconnect: failed to reconnect!")
}
waitTime := f.Config.RetryWait * e(defaultReconnectWaitIncreRate, float64(i-1))
time.Sleep(time.Duration(waitTime) * time.Millisecond)
}
}
func (f *Fluent) flushBuffer() {
f.mu.Lock()
defer f.mu.Unlock()
f.pending = f.pending[0:0]
}
func (f *Fluent) send() error {
f.muconn.Lock()
defer f.muconn.Unlock()
func (f *Fluent) send() (err error) {
if f.conn == nil {
if f.reconnecting == false {
f.mu.Lock()
f.reconnecting = true
f.mu.Unlock()
f.reconnect()
go f.reconnect()
}
err = errors.New("fluent#send: can't send logs, client is reconnecting")
} else {
f.mu.Lock()
_, err = f.conn.Write(f.pending)
f.mu.Unlock()
return errors.New("fluent#send: can't send logs, client is reconnecting")
}
return
f.mubuff.Lock()
defer f.mubuff.Unlock()
var err error
if len(f.pending) > 0 {
_, err = f.conn.Write(f.pending)
if err != nil {
f.conn.Close()
f.conn = nil
} else {
f.pending = f.pending[:0]
}
}
return err
}