mirror of
https://gitee.com/rainbond/Rainbond.git
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101 lines
2.6 KiB
Go
101 lines
2.6 KiB
Go
// RAINBOND, Application Management Platform
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// Copyright (C) 2014-2017 Goodrain Co., Ltd.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version. For any non-GPL usage of Rainbond,
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// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
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// must be obtained first.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package logger
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import (
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"sync"
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"time"
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"github.com/sirupsen/logrus"
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)
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const (
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bufSize = 16 * 1024
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readSize = 2 * 1024
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)
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// Copier can copy logs from specified sources to Logger and attach Timestamp.
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// Writes are concurrent, so you need implement some sync in your logger.
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type Copier struct {
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logfile *LogFile
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dst []Logger
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closed chan struct{}
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reader *LogWatcher
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since time.Time
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once sync.Once
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}
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// NewCopier creates a new Copier
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func NewCopier(logfile *LogFile, dst []Logger, since time.Time) *Copier {
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return &Copier{
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logfile: logfile,
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reader: NewLogWatcher(),
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dst: dst,
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since: since,
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}
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}
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// Run starts logs copying
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func (c *Copier) Run() {
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c.closed = make(chan struct{})
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go c.logfile.ReadLogs(ReadConfig{Follow: true, Since: c.since, Tail: 0}, c.reader)
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go c.copySrc()
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}
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func (c *Copier) copySrc() {
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defer c.reader.ConsumerGone()
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lool:
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for {
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select {
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case <-c.closed:
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return
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case err := <-c.reader.Err:
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logrus.Errorf("read container log file error %s, will retry after 5 seconds", err.Error())
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//If there is an error in the collection log process,
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//the collection should be restarted and not stopped
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time.Sleep(time.Second * 5)
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go c.logfile.ReadLogs(ReadConfig{Follow: true, Since: c.since, Tail: 0}, c.reader)
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continue
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case msg, ok := <-c.reader.Msg:
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if !ok {
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break lool
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}
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for _, d := range c.dst {
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if err := d.Log(msg); err != nil {
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logrus.Debugf("copy container log failure %s", err.Error())
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}
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}
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}
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}
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}
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// Close closes the copier
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func (c *Copier) Close() {
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c.once.Do(func() {
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if c.dst != nil {
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for _, d := range c.dst {
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if err := d.Close(); err != nil {
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logrus.Errorf("close log driver failure %s", err.Error())
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}
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}
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}
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close(c.closed)
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})
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}
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