/
logger.go
108 lines (97 loc) · 1.68 KB
/
logger.go
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package lsmt
import (
"fmt"
"log"
"os"
)
const (
LevelDebug logLevel = iota
LevelInfo
LevelWarn
LevelError
LevelFatal
LevelOff
)
func LevelText(level logLevel) string {
switch level {
case LevelDebug:
return "Level=Debug"
case LevelInfo:
return "Level=Info"
case LevelWarn:
return "Level=Warn"
case LevelError:
return "Level=Error"
case LevelFatal:
return "Level=Fatal"
case LevelOff:
return "Level=Off"
default:
return "Level=Unknown"
}
}
type logLevel int
type Logger struct {
*log.Logger
level logLevel
}
func NewLogger(level logLevel) *Logger {
return &Logger{
Logger: log.New(os.Stderr, "", log.LstdFlags),
level: level,
}
}
func (l *Logger) Debug(s string, a ...interface{}) {
if l.level > LevelDebug {
return
}
ls := fmt.Sprintf("| DEBUG | %s", s)
if a == nil || len(a) == 0 {
l.Println(ls)
return
}
l.Printf(ls, a...)
}
func (l *Logger) Info(s string, a ...interface{}) {
if l.level > LevelInfo {
return
}
ls := fmt.Sprintf("| INFO | %s", s)
if a == nil || len(a) == 0 {
l.Println(ls)
return
}
l.Printf(ls, a...)
}
func (l *Logger) Warn(s string, a ...interface{}) {
if l.level > LevelWarn {
return
}
ls := fmt.Sprintf("| WARN | %s", s)
if a == nil || len(a) == 0 {
l.Println(ls)
return
}
l.Printf(ls, a...)
}
func (l *Logger) Error(s string, a ...interface{}) {
if l.level > LevelError {
return
}
ls := fmt.Sprintf("| ERROR | %s", s)
if a == nil || len(a) == 0 {
l.Println(ls)
return
}
l.Printf(ls, a...)
}
func (l *Logger) Fatal(s string, a ...interface{}) {
if l.level > LevelFatal {
return
}
ls := fmt.Sprintf("| FATAL | %s", s)
if a == nil || len(a) == 0 {
l.Fatalln(ls)
}
l.Fatalf(ls, a...)
}