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simple_logger.go
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simple_logger.go
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/**
* @file logger.go
* @author ligang
* @date 2016-02-04
*/
package golog
import (
"errors"
"sync"
)
type simpleLogger struct {
globalLevel int
w IWriter
levelWriters map[int]IWriter
formater IFormater
lock *sync.Mutex
}
func NewSimpleLogger(writer IWriter, globalLevel int, formater IFormater) (*simpleLogger, error) {
_, ok := logLevels[globalLevel]
if !ok {
return nil, errors.New("Global level not exists")
}
this := &simpleLogger{
globalLevel: globalLevel,
w: writer,
levelWriters: make(map[int]IWriter),
lock: new(sync.Mutex),
}
noopWriter := new(NoopWriter)
for level, _ := range logLevels {
if level < globalLevel {
this.levelWriters[level] = noopWriter
} else {
this.levelWriters[level] = this.w
}
}
if formater == nil {
formater = new(NoopFormater)
}
this.formater = formater
return this, nil
}
func (this *simpleLogger) Debug(msg []byte) {
this.Log(LEVEL_DEBUG, msg)
}
func (this *simpleLogger) Info(msg []byte) {
this.Log(LEVEL_INFO, msg)
}
func (this *simpleLogger) Notice(msg []byte) {
this.Log(LEVEL_NOTICE, msg)
}
func (this *simpleLogger) Warning(msg []byte) {
this.Log(LEVEL_WARNING, msg)
}
func (this *simpleLogger) Error(msg []byte) {
this.Log(LEVEL_ERROR, msg)
}
func (this *simpleLogger) Critical(msg []byte) {
this.Log(LEVEL_CRITICAL, msg)
}
func (this *simpleLogger) Alert(msg []byte) {
this.Log(LEVEL_ALERT, msg)
}
func (this *simpleLogger) Emergency(msg []byte) {
this.Log(LEVEL_EMERGENCY, msg)
}
func (this *simpleLogger) Log(level int, msg []byte) error {
writer, ok := this.levelWriters[level]
if !ok {
return errors.New("Level not exists")
}
msg = this.formater.Format(level, msg)
this.lock.Lock()
writer.Write(msg)
this.lock.Unlock()
return nil
}
func (this *simpleLogger) Flush() error {
return this.w.Flush()
}
func (this *simpleLogger) Free() {
this.w.Free()
}