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log.go
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log.go
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package main
import (
"fmt"
"log"
"os"
"path/filepath"
"sync"
)
type Logan struct {
Path string
FileName string
File *os.File
lock *sync.RWMutex
logger *log.Logger
}
func newLogan(path string, name string) *Logan {
return &Logan{
Path: path,
FileName: name,
lock: new(sync.RWMutex),
}
}
func (l Logan) initDir() (err error) {
_, err = os.Stat(l.Path)
if err != nil {
if os.IsNotExist(err) {
// use 0777 for test. unsafe
os.Mkdir(l.Path, 0755)
} else {
return
}
}
return
}
// short for Openfile
func (l *Logan) open() (err error) {
l.File, err = os.OpenFile(filepath.Join(l.Path, l.FileName), os.O_APPEND|os.O_CREATE|os.O_RDWR, 0755)
if err != nil {
return
}
l.logger = log.New(l.File, "", log.Ldate|log.Ltime|log.Lshortfile)
return
}
// short for close file
func (l *Logan) close() (err error) {
l.Info("close log file")
err = l.File.Close()
return
}
func (l *Logan) Info(v ...interface{}) {
l.logger.SetPrefix("[INFO]: ")
l.logger.Output(2, fmt.Sprintln(v...))
}
func (l *Logan) Warn(v ...interface{}) {
l.logger.SetPrefix("[WARN]: ")
l.logger.Output(2, fmt.Sprintln(v...))
}
func (l *Logan) Error(v ...interface{}) {
l.logger.SetPrefix("[ERROR]:")
l.logger.Output(2, fmt.Sprintln(v...))
}
func (l *Logan) Panic(v ...interface{}) {
l.logger.SetPrefix("[PANIC]:")
l.logger.Panicln(v...)
}
func (l *Logan) Printf(format string, v ...interface{}) {
l.logger.SetPrefix("")
l.logger.Output(2, fmt.Sprintf(format, v...))
}