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logger.go
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logger.go
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package logger
import (
"log"
"io"
"os"
)
type LogLevel int
const (
DEBUG LogLevel = 99
INFO LogLevel = 50
ERROR LogLevel = 0
)
var (
loglevels map[string]LogLevel = map[string]LogLevel{
"debug": DEBUG,
"info": INFO,
"error": ERROR,
}
)
type LoggerConfig struct {
Loglevel LogLevel
Logpath string
Prefix string
Flag int
}
type Logger struct {
Config LoggerConfig
logger *log.Logger
}
func New() *Logger {
l := &Logger{}
l.Config.Loglevel = INFO
l.Config.Flag = log.Ldate|log.Ltime
return l
}
func (l *Logger) Logger() *log.Logger {
return l.logger
}
func (l *Logger) SetLevel(level string) {
if lvl, ok := loglevels[level]; !ok {
l.Config.Loglevel = INFO
} else {
l.Config.Loglevel = lvl
}
}
func (l *Logger) SetLogpath(path string) {
l.Config.Logpath = path
}
func (l *Logger) SetPrefix(prefix string) {
l.Config.Prefix = prefix
}
func (l *Logger) SetDefault(prefix string) {
l.Config.Loglevel = INFO
l.Config.Flag = log.Ldate|log.Ltime
l.Config.Prefix = prefix
}
func (l *Logger) Init() error {
var out io.Writer
if l.Config.Logpath == "" {
out = os.Stdout
} else {
f, err := os.OpenFile(l.Config.Logpath, os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0600)
if err != nil {
return err
}
out = io.MultiWriter(os.Stdout, f)
}
l.logger = log.New(out, l.Config.Prefix, l.Config.Flag)
return nil
}
func (l *Logger) Debug(msg string, v ...interface{}) {
if l.Config.Loglevel < DEBUG {
return
}
l.logger.Printf(msg, v...)
}
func (l *Logger) Info(msg string, v ...interface{}) {
if l.Config.Loglevel < INFO {
return
}
l.logger.Printf(msg, v...)
}
func (l *Logger) Error(theerr error, msg string, v ...interface{}) {
if l.Config.Loglevel < ERROR {
return
}
l.logger.Printf(msg, v...)
l.logger.Printf("Error %v", theerr)
}