forked from keybase/client
/
log_fwd.go
82 lines (68 loc) · 1.46 KB
/
log_fwd.go
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// Copyright 2015 Keybase, Inc. All rights reserved. Use of
// this source code is governed by the included BSD license.
package service
import keybase1 "github.com/keybase/client/go/protocol/keybase1"
type logEntry struct {
level keybase1.LogLevel
format string
args []interface{}
}
type extLogger interface {
Log(e *logEntry)
SetHandleID(id int)
HandleID() int
Shutdown()
}
type logFwd struct {
addCh chan extLogger
removeCh chan extLogger
logCh chan *logEntry
doneCh chan bool
loggers map[int]extLogger
idSeq int
}
func newLogFwd() *logFwd {
f := &logFwd{
addCh: make(chan extLogger),
removeCh: make(chan extLogger),
logCh: make(chan *logEntry, 10000),
doneCh: make(chan bool),
loggers: make(map[int]extLogger),
}
go f.process()
return f
}
func (f *logFwd) Add(x extLogger) {
f.addCh <- x
}
func (f *logFwd) Remove(x extLogger) {
f.removeCh <- x
}
func (f *logFwd) Log(level keybase1.LogLevel, format string, args []interface{}) {
f.logCh <- &logEntry{level: level, format: format, args: args}
}
func (f *logFwd) Shutdown() {
f.doneCh <- true
}
func (f *logFwd) process() {
for {
select {
case x := <-f.addCh:
f.loggers[f.idSeq] = x
x.SetHandleID(f.idSeq)
f.idSeq++
case x := <-f.removeCh:
delete(f.loggers, x.HandleID())
x.Shutdown()
case e := <-f.logCh:
for _, x := range f.loggers {
x.Log(e)
}
case <-f.doneCh:
for _, x := range f.loggers {
x.Shutdown()
}
return
}
}
}