[go]日志库小例子

Posted 2020-11-24 iiiiiher

输出日志

//输出日志到console
msg := fmt.Sprintf(format, args...) //format里的坑  args解出的数据相匹配
fmt.Fprintf(os.Stdout, "%s
", msg)


//输出日志到文件
file, _ := os.OpenFile("/tmp/test.log", os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0755)
fmt.Fprintf(file, "name: %s
", "maotai")

异步写日志

//将日志写入chan
select {
case f.LogDataChan <- logData:
default:
}

//从chan中去除日志写到文件
for logData := range f.LogDataChan {
    fmt.Fprintf(file, "%s %s (%s:%s:%d) %s
", logData.TimeStr, logData.LevelStr, logData.Filename, logData.FuncName, logData.LineNo, logData.Message)
}