日志模塊是使用的 github.com/op/go-logging 這里只是對這個(gè)模塊再次重鑄一下
獲取依賴包

go get github.com/op/go-logging

直接附上代碼

package log

import (
    "io"
    "os"
    "path"

    logging "github.com/op/go-logging"
)

/**
 *日志級別
 */
const (
    critical int = iota
    err_or
    warning
    notice
    info
    debug
)

var (
    // 日志管理器
    mlog *Logger
    /**
     * 日志輸出格式
     */
    logFormat = []string{
        `%{shortfunc} ? %{level:.4s} %{message}`,
        `%{time:15:04:05.00} %{shortfunc} ? %{level:.4s} %{id:03x} %{message}`,
        `%{color}%{time:15:04:05.00} %{shortfunc} %{shortfile} ? %{level:.4s} %{id:03x}%{color:reset} %{message}`,
    }

    /**
     * 日志級別與 string類型映射
     */
    LogLevelMap = map[string]int{
        "CRITICAL": critical,
        "ERROR":    err_or,
        "WARNING":  warning,
        "NOTICE":   notice,
        "INFO":     info,
        "DEBUG":    debug,
    }
)

type Logger struct {
    log      *logging.Logger
    level    string
    filePath string
    ModeName string
    format   int
}

/**
 * 初始化日志
 * @param logLevel The arguments could be INFO, DEGUE, ERROR
 */
func Init(logLevel string) {
    mlog = newLog(logLevel)
    return
}

func newLog(level string) *Logger {
    log := new(Logger)
    log.level = level
    log.filePath = "./log"
    log.ModeName = "ville"
    log.format = 2
    log.log = logging.MustGetLogger(log.ModeName)
    log.AddLogBackend()
    return log
}
/**
 *添加日志輸出終端拾氓，可以是文件，控制臺涧尿，還有網(wǎng)絡(luò)輸出等润文。
 */
func (l *Logger) AddLogBackend() {
    l.log.ExtraCalldepth = 2
    // 打開文件輸出終端
    // backend1 := l.getFileBackend()
    backend2 := l.getStdOutBackend()
    logging.SetBackend(backend2)
    return
}

func (l *Logger) getFileBackend() logging.LeveledBackend {
    //判斷是否存在該文件夾
    if err := os.MkdirAll(l.filePath, 0777); err != nil {
        panic(err)
    }
    // 打開一個(gè)文件
    file, err := os.OpenFile(path.Join(l.filePath, l.ModeName+"_info.log"), os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
    if err != nil {
        panic(err)
    }
    backend := l.getLogBackend(file, LogLevelMap[l.level])
    logging.SetBackend(backend)
    return backend
}

func (l *Logger) getStdOutBackend() logging.LeveledBackend {
    bked := l.getLogBackend(os.Stderr, LogLevelMap[l.level])
    return bked
}

/**
 * 獲取終端
 */
func (l *Logger) getLogBackend(out io.Writer, level int) logging.LeveledBackend {
    backend := logging.NewLogBackend(out, "", 1)
    format := logging.MustStringFormatter(logFormat[2])
    backendFormatter := logging.NewBackendFormatter(backend, format)
    backendLeveled := logging.AddModuleLevel(backendFormatter)
    backendLeveled.SetLevel(logging.Level(level), "")
    return backendLeveled
}

func (l *Logger) logI(infmt string, args ...interface{}) {
    l.log.Infof(infmt, args...)
    return
}
func (l *Logger) logE(infmt string, args ...interface{}) {
    l.log.Errorf(infmt, args...)
    return
}
func (l *Logger) logW(infmt string, args ...interface{}) {
    l.log.Warningf(infmt, args...)
    return
}
func (l *Logger) logD(infmt string, args ...interface{}) {
    l.log.Debugf(infmt, args...)
    return
}

func LogI(fmtstr string, args ...interface{}) {
    mlog.logI(fmtstr, args...)
    return
}

func LogW(fmtstr string, args ...interface{}) {
    mlog.logW(fmtstr, args...)
    return
}

func LogE(fmtstr string, args ...interface{}) {
    mlog.logE(fmtstr, args...)
    return
}

func LogD(fmtstr string, args ...interface{}) {
    mlog.logD(fmtstr, args...)
    return
}