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logger.go
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logger.go
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// Copyright (c) nano Authors. All Rights Reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package log
import (
"log"
"os"
)
// Logger represents the log interface
type Logger interface {
Printf(format string, v ...interface{})
Print(v ...interface{})
Println(v ...interface{})
Fatalf(format string, v ...interface{})
Fatal(v ...interface{})
Fatalln(v ...interface{})
Panicf(format string, v ...interface{})
Panic(v ...interface{})
Panicln(v ...interface{})
}
// LevelLogger represents the level log interface
type LevelLogger interface {
Tracef(format string, v ...interface{})
Trace(v ...interface{})
Traceln(v ...interface{})
Debugf(format string, v ...interface{})
Debug(v ...interface{})
Debugln(v ...interface{})
Infof(format string, v ...interface{})
Info(v ...interface{})
Infoln(v ...interface{})
Printf(format string, v ...interface{})
Print(v ...interface{})
Println(v ...interface{})
Warnf(format string, v ...interface{})
Warn(v ...interface{})
Warnln(v ...interface{})
Warningf(format string, v ...interface{})
Warning(v ...interface{})
Warningln(v ...interface{})
Errorf(format string, v ...interface{})
Error(v ...interface{})
Errorln(v ...interface{})
Fatalf(format string, v ...interface{})
Fatal(v ...interface{})
Fatalln(v ...interface{})
Panicf(format string, v ...interface{})
Panic(v ...interface{})
Panicln(v ...interface{})
}
func init() {
Use(log.New(os.Stderr, "", log.LstdFlags|log.Lshortfile))
}
// log
var (
Printf func(format string, v ...interface{})
Print func(v ...interface{})
Println func(v ...interface{})
Fatalf func(format string, v ...interface{})
Fatal func(v ...interface{})
Fatalln func(v ...interface{})
Panicf func(format string, v ...interface{})
Panic func(v ...interface{})
Panicln func(v ...interface{})
Tracef func(format string, v ...interface{})
Trace func(v ...interface{})
Traceln func(v ...interface{})
Debugf func(format string, v ...interface{})
Debug func(v ...interface{})
Debugln func(v ...interface{})
Infof func(format string, v ...interface{})
Info func(v ...interface{})
Infoln func(v ...interface{})
Warnf func(format string, v ...interface{})
Warn func(v ...interface{})
Warnln func(v ...interface{})
Warningf func(format string, v ...interface{})
Warning func(v ...interface{})
Warningln func(v ...interface{})
Errorf func(format string, v ...interface{})
Error func(v ...interface{})
Errorln func(v ...interface{})
)
// Use rewrites the default logger
func Use(logger Logger) {
if logger == nil {
return
}
_, ok := logger.(LevelLogger)
if !ok {
setLogger(logger)
} else {
setLevelLogger(logger.(LevelLogger))
}
}
func setLogger(logger Logger) {
Tracef = logger.Printf
Trace = logger.Print
Traceln = logger.Println
Debugf = logger.Printf
Debug = logger.Print
Debugln = logger.Println
Infof = logger.Printf
Info = logger.Print
Infoln = logger.Println
Printf = logger.Printf
Print = logger.Print
Println = logger.Println
Warnf = logger.Printf
Warn = logger.Print
Warnln = logger.Println
Warningf = logger.Printf
Warning = logger.Print
Warningln = logger.Println
Errorf = logger.Printf
Error = logger.Print
Errorln = logger.Println
Fatalf = logger.Fatalf
Fatal = logger.Fatal
Fatalln = logger.Fatalln
Panicf = logger.Panicf
Panic = logger.Panic
Panicln = logger.Panicln
}
func setLevelLogger(logger LevelLogger) {
Tracef = logger.Tracef
Trace = logger.Trace
Traceln = logger.Traceln
Debugf = logger.Debugf
Debug = logger.Debug
Debugln = logger.Debugln
Infof = logger.Infof
Info = logger.Info
Infoln = logger.Infoln
Printf = logger.Printf
Print = logger.Print
Println = logger.Println
Warnf = logger.Warnf
Warn = logger.Warn
Warnln = logger.Warnln
Warningf = logger.Warningf
Warning = logger.Warning
Warningln = logger.Warningln
Errorf = logger.Errorf
Error = logger.Error
Errorln = logger.Errorln
Fatalf = logger.Fatalf
Fatal = logger.Fatal
Fatalln = logger.Fatalln
Panicf = logger.Panicf
Panic = logger.Panic
Panicln = logger.Panicln
}