/
simplelog.go
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/
simplelog.go
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package simplelog
/*
potentially use: https://github.com/op/go-logging
*/
import (
"errors"
"fmt"
"io"
"io/ioutil"
"log"
"os"
)
var (
Trace = log.New(os.Stdout, "TRC ", log.Ldate|log.Ltime)
Debug = log.New(os.Stdout, "DBG ", log.Ldate|log.Ltime)
Info = log.New(os.Stdout, "INF ", log.Ldate|log.Ltime)
Warning = log.New(os.Stdout, "WRN ", log.Ldate|log.Ltime)
Error = log.New(os.Stderr, "ERR ", log.Ldate|log.Ltime)
Fatal = log.New(os.Stderr, "FTL ", log.Ldate|log.Ltime)
)
func resetLogLevel() {
Trace = log.New(os.Stdout, "TRC ", log.Ldate|log.Ltime)
Debug = log.New(os.Stdout, "DBG ", log.Ldate|log.Ltime)
Info = log.New(os.Stdout, "INF ", log.Ldate|log.Ltime)
Warning = log.New(os.Stdout, "WRN ", log.Ldate|log.Ltime)
Error = log.New(os.Stderr, "ERR ", log.Ldate|log.Ltime)
}
func SetLogLevel(level string) error {
resetLogLevel()
switch level {
case "trace":
break
case "debug":
Trace = log.New(ioutil.Discard, "TRC ", log.Ldate|log.Ltime)
case "info":
Trace = log.New(ioutil.Discard, "TRC ", log.Ldate|log.Ltime)
Debug = log.New(ioutil.Discard, "DBG ", log.Ldate|log.Ltime)
case "warning":
Trace = log.New(ioutil.Discard, "TRC ", log.Ldate|log.Ltime)
Debug = log.New(ioutil.Discard, "DBG ", log.Ldate|log.Ltime)
Info = log.New(ioutil.Discard, "INF ", log.Ldate|log.Ltime)
case "error":
Trace = log.New(ioutil.Discard, "TRC ", log.Ldate|log.Ltime)
Debug = log.New(ioutil.Discard, "DBG ", log.Ldate|log.Ltime)
Info = log.New(ioutil.Discard, "INF ", log.Ldate|log.Ltime)
Warning = log.New(ioutil.Discard, "WRN ", log.Ldate|log.Ltime)
default:
return errors.New(fmt.Sprintf("Invalid log level: %s", level))
}
return nil
}
func Traceln(v ...interface{}) {
Trace.Println(v...)
}
func Tracef(format string, v ...interface{}) {
Trace.Printf(format, v...)
}
func Debugln(v ...interface{}) {
Debug.Println(v...)
}
func Debugf(format string, v ...interface{}) {
Debug.Printf(format, v...)
}
func Infoln(v ...interface{}) {
Info.Println(v...)
}
func Infof(format string, v ...interface{}) {
Info.Printf(format, v...)
}
func Warningln(v ...interface{}) {
Warning.Println(v...)
}
func Warningf(format string, v ...interface{}) {
Warning.Printf(format, v...)
}
func Errorln(v ...interface{}) {
Error.Println(v...)
}
func Errorf(format string, v ...interface{}) {
Error.Printf(format, v...)
}
func Fatalln(v ...interface{}) {
Fatal.Println(v...)
}
func Fatalf(format string, v ...interface{}) {
Fatal.Printf(format, v...)
}
// For backward compatibility
type Logger struct {
Trace *log.Logger
Debug *log.Logger
Info *log.Logger
Warning *log.Logger
Error *log.Logger
Fatal *log.Logger
}
func NewLogger(
traceHandle io.Writer,
debugHandle io.Writer,
infoHandle io.Writer,
warningHandle io.Writer,
errorHandle io.Writer) *Logger {
return &Logger{
Trace: log.New(traceHandle, "TRC ", log.Ldate|log.Ltime),
Debug: log.New(traceHandle, "DBG ", log.Ldate|log.Ltime),
Info: log.New(infoHandle, "INF ", log.Ldate|log.Ltime),
Warning: log.New(warningHandle, "WRN ", log.Ldate|log.Ltime),
Error: log.New(errorHandle, "ERR ", log.Ldate|log.Ltime),
Fatal: log.New(errorHandle, "FTL ", log.Ldate|log.Ltime),
}
}
func NewStdLogger() *Logger {
return NewLogger(os.Stdout, os.Stdout, os.Stdout, os.Stdout, os.Stderr)
}
func (l *Logger) SetLogLevel(level string) error {
switch level {
case "trace":
break
case "debug":
l.Trace = log.New(ioutil.Discard, "TRC ", log.Ldate|log.Ltime)
break
case "info":
l.Trace = log.New(ioutil.Discard, "TRC ", log.Ldate|log.Ltime)
l.Debug = log.New(ioutil.Discard, "DBG ", log.Ldate|log.Ltime)
break
case "warning":
l.Trace = log.New(ioutil.Discard, "TRC ", log.Ldate|log.Ltime)
l.Debug = log.New(ioutil.Discard, "DBG ", log.Ldate|log.Ltime)
l.Info = log.New(ioutil.Discard, "INF ", log.Ldate|log.Ltime)
break
case "error":
l.Trace = log.New(ioutil.Discard, "TRC ", log.Ldate|log.Ltime)
l.Debug = log.New(ioutil.Discard, "DBG ", log.Ldate|log.Ltime)
l.Info = log.New(ioutil.Discard, "INF ", log.Ldate|log.Ltime)
l.Warning = log.New(ioutil.Discard, "WRN ", log.Ldate|log.Ltime)
break
default:
return errors.New(fmt.Sprintf("Invalid log level: %s", level))
}
return nil
}
func (l *Logger) Traceln(v ...interface{}) {
l.Trace.Println(v...)
}
func (l *Logger) Tracef(format string, v ...interface{}) {
l.Trace.Printf(format, v...)
}
func (l *Logger) Debugln(v ...interface{}) {
l.Debug.Println(v...)
}
func (l *Logger) Debugf(format string, v ...interface{}) {
l.Debug.Printf(format, v...)
}
func (l *Logger) Infoln(v ...interface{}) {
l.Info.Println(v...)
}
func (l *Logger) Infof(format string, v ...interface{}) {
l.Info.Printf(format, v...)
}
func (l *Logger) Warningln(v ...interface{}) {
l.Warning.Println(v...)
}
func (l *Logger) Warningf(format string, v ...interface{}) {
l.Warning.Printf(format, v...)
}
func (l *Logger) Errorln(v ...interface{}) {
l.Error.Println(v...)
}
func (l *Logger) Errorf(format string, v ...interface{}) {
l.Error.Printf(format, v...)
}
func (l *Logger) Fatalln(v ...interface{}) {
l.Fatal.Println(v...)
}
func (l *Logger) Fatalf(format string, v ...interface{}) {
l.Fatal.Printf(format, v...)
}