golangのロゴライブラリ

golangには優れたサードパーティのオープンソースライブラリがたくさんあります.例えば

go-slog、これは筆者自身がオープンソースした簡単なログライブラリ

です.

logrus

zap

oklog

glog

seelog

zerologはすべてとても優秀なオープンソースライブラリで、機能もとても強くて、多くはtxtの方式でログを入力してあるいはjsonの方式でログを出力することを支持して、私は簡単に次のいくつかのログライブラリ

を試しました
1. logrus

package main

import (
    "flag"
    "fmt"
    "os"
    "path"
    "runtime"
    "strings"
    "time"

    "github.com/Sirupsen/logrus"
)

func logrus_test() {

    fmt.Printf("<<<<<<<<>>>>>>>>>>>>>
")

    logrus.WithFields(logrus.Fields{
        "sb": "sbvalue",
    }).Info("A walrus appears")

    log1 := logrus.New()
    fmt.Printf("log1 level: %d
", log1.Level)
    log1.Debug("log1 debug")
    log1.Debugf("log1 debug f, %d", 10)
    log1.Info("log1 info")
    log1.Warn("log1 warn")
    log1.Error("log1 error")
    // log1.Panic("log1 panic")

    log1.SetLevel(logrus.ErrorLevel)
    fmt.Printf("after set log1 level to errorlevel
")
    log1.Debug("log1 debug")

    fmt.Printf("-------------test formater-------------
")
    log1.SetLevel(logrus.DebugLevel)
    log1.Formatter = &logrus.TextFormatter{
        DisableColors:  true,
        FullTimestamp:  true,
        DisableSorting: true,
    }

    log1.Debug("log text formatter test")

    fmt.Printf("-----------json formatter-------------
")
    log1.Formatter = &logrus.JSONFormatter{}
    log1.Debug("log json formatter test")

    fmt.Printf("-----------log to file test-----------
")
    log2 := logrus.New()
    log2.SetLevel(logrus.DebugLevel)
    log2.Formatter = &logrus.TextFormatter{
        DisableColors:  true,
        FullTimestamp:  true,
        DisableSorting: true,
    }

    logger_name := "logrus"
    cur_time := time.Now()
    log_file_name := fmt.Sprintf("%s_%04d-%02d-%02d-%02d-%02d.txt",
        logger_name, cur_time.Year(), cur_time.Month(), cur_time.Day(), cur_time.Hour(), cur_time.Minute())
    log_file, err := os.OpenFile(log_file_name, os.O_CREATE|os.O_APPEND|os.O_WRONLY, os.ModeExclusive)
    if err != nil {
        fmt.Printf("try create logfile[%s] error[%s]
", log_file_name, err.Error())
        return
    }

    defer log_file.Close()

    log2.SetOutput(log_file)

    for i := 0; i < 10; i++ {
        log2.Debugf("logrus to file test %d", i)
    }

}

使いやすく、出力スタイルが多様化しています
2. zap

package main

import (
    "flag"
    "fmt"
    "os"
    "path"
    "runtime"
    "strings"
    "time"

    "github.com/golang/glog"
)

func zap_log_test() {
    fmt.Printf("<<<<<<<<>>>>>>>>>>
")
    logger := zap.NewExample()
    defer logger.Sync()

    const url = "http://example.com"

    // In most circumstances, use the SugaredLogger. It's 4-10x faster than most
    // other structured logging packages and has a familiar, loosely-typed API.
    sugar := logger.Sugar()
    sugar.Infow("Failed to fetch URL.",
        // Structured context as loosely typed key-value pairs.
        "url", url,
        "attempt", 3,
        "backoff", time.Second,
    )
    sugar.Infof("Failed to fetch URL: %s", url)

    // In the unusual situations where every microsecond matters, use the
    // Logger. It's even faster than the SugaredLogger, but only supports
    // structured logging.
    logger.Info("Failed to fetch URL.",
        // Structured context as strongly typed fields.
        zap.String("url", url),
        zap.Int("attempt", 3),
        zap.Duration("backoff", time.Second),
    )
}

zapの性能はこれらのライブラリの中で最も高いはずです.
3. glog

package main

import (
    "flag"
    "fmt"
    "os"
    "path"
    "runtime"
    "strings"
    "time"

    "github.com/golang/glog"
)

func glog_test() {
    fmt.Printf("<<<<<<>>>>>>>>>
")
    flag.Parse()

    defer glog.Flush()

    glog.Info("glog info test")
    glog.Warning("glog warn test")
    // glog.Error("glog error test")
    // glog.Fatal("glog fatal test")
}

glogはより軽量化され、2つのファイルだけでgoogleのc++ログライブラリglogのgolangバージョンです.
これらのライブラリを使用すると、いずれも強力ですが、私のニーズに合わないような気がします.私は毎日1つのファイルや1時間に1つのファイルを限定したり、ファイル形式を限定したりする動的rotatingの機能が必要ですが、ありません(あるいは発見していません)、ログの出力フォーマットも私の習慣ではありません.仕方がありません.1、2日かけて自分の要求に合った簡単な日記庫go-slogを書いたので、興味のある学生はcloneしてみてください.O(∩∩)O
4. slog
上のいくつかのログライブラリのため、私の好みに合わないと感じて、自分で簡単なログライブラリを書いて、住所をダウンロードしました:https://github.com/yandaren/go-slogああ、興味のある人はcloneでやってみてください.コードは簡単です.次はexampleを提供します.

package slog_example

import (
    "fmt"
    "go-slog/slog"
    "time"
)

func Slog_test() {
    for _, lg_lvl := range slog.AllLogLevels {
        fmt.Printf("%d = %s
", lg_lvl, lg_lvl.String())
    }

    fmt.Printf("----------------------------------
")
    var lvl_strings = []string{
        "debug",
        "info",
        "warn",
        "warning",
        "error",
        "fatal",
        "none",
        "sblv",
    }

    for _, lg_lvl_str := range lvl_strings {
        lg_lvl, err := slog.ParseLevel(lg_lvl_str)
        if err != nil {
            fmt.Printf("parse lg_lvl_str[%s] error[%s]
", lg_lvl_str, err.Error())
        } else {
            fmt.Printf("log_lvl_str[%s] = %d
", lg_lvl_str, lg_lvl)
        }
    }

    fmt.Printf("---------------slog test---------------
")
    logger := slog.NewStdoutLoggerSt("stdout_logger")

    logger.Debug("slog stdoutlogger test")
    logger.Info("slog stdoutlogger test")
    logger.Warn("slog stdoutlogger test, %d", 3)

    stderr_logger := slog.NewStderrLoggerSt("stderr_logger")
    stderr_logger.Debug("slog stderr_logger test")
    stderr_logger.Info("slog stderr_logger test")
    stderr_logger.Warn("slog stderr_logger test, %d", 3)
}

func File_writer_test() {
    fmt.Printf("file_writer_test
")

    fwriter := slog.NewFileWriter()

    file_name := "file_writer_test.txt"

    if !fwriter.Open(file_name, false) {
        fmt.Printf("create file[%s] failed
", file_name)
        return
    }

    defer fwriter.Close()

    for i := 0; i < 10; i++ {
        fwriter.Write([]byte("11111111111111111111
"))
    }

    file_name1 := "file_writer_test1.txt"

    if !fwriter.Open(file_name1, false) {
        fmt.Printf("create file[%s] failed
", file_name1)
        return
    }

    defer fwriter.Close()

    for i := 0; i < 10; i++ {
        fwriter.Write([]byte("2222222222222222222222
"))
    }
}

//              logger
func Simple_file_logger_test() {
    fmt.Printf("simple_file_logger_test
")

    logger := slog.NewBasicLoggerSt("base_logger", "basic_logger.txt")

    for i := 0; i < 10; i++ {
        logger.Debug("base logger debug log test")
        logger.Info("base logger info log test")
        logger.Warn("base logger warn log test")
    }
}

//              ，           
//                    ，      rotating
//       3     
// Rotate files:
// log.txt -> log.1.txt
// log.1.txt -> log.2.txt
// log.2.txt -> log.3.txt
// log.3.txt -> delete
func Rotating_logger_test() {
    fmt.Printf("rotating_logger_test
")

    logger := slog.NewRotatingLoggerSt("rotating_logger", "rotating_logger.txt", 500, 5)

    for i := 0; i < 20; i++ {
        logger.Debug("rorating msg xxx now_time[%s]", time.Now().String())
    }
}

//           logger
func Daily_logger_test() {
    fmt.Printf("daily_logger_test
")

    logger := slog.NewDailyLoggerSt("daily_logger", "daily_logger.txt", 12, 30)

    for i := 0; i < 20; i++ {
        logger.Debug("daily_logger test")
    }
}

//                  logger
func Hourly_logger_test() {
    fmt.Printf("Hourly_logger_test
")

    logger := slog.NewHourlyLoggerSt("houly_logger", "houly_logger.txt")

    for i := 0; i < 20; i++ {
        logger.Debug("houlry_logger test")
    }
}

//       logger，                  
//   stdout, stderr, file    
func Muti_sink_test() {
    logger := slog.NewLogger("muti_logger")
    sink1 := slog.NewSimpleFileSinkSt("muti_sink_logger.txt")
    sink2 := slog.NewHourlyFileSinkSt("muti_hourly_logger.txt")
    sink3 := slog.NewStdoutSinkSt()

    logger.AppendSink(sink1).AppendSink(sink2).AppendSink(sink3)

    for i := 0; i < 20; i++ {
        logger.Debug("muti_sink_test test")
    }
}

func logger_log_test(gid int, logger *slog.Logger) {

    fmt.Printf("logger_log_test gid[%d]
", gid)

    for i := 0; i < 5; i++ {
        logger.Debug("logger_log_test gid[%d] msgid[%d]", gid, i)
    }
}

func Muti_goroutine_stdout_test_nolock() {

    fmt.Printf("Muti_goroutine_stdout_test_nolock")

    logger := slog.NewStdoutLoggerSt("Muti_goroutine_test_nolock")

    for i := 0; i < 5; i++ {
        go logger_log_test(i, logger)
    }

    fmt.Printf("try sleep for a while
")
    time.Sleep(time.Millisecond * 100)
    fmt.Printf("sleep finished, Muti_goroutine_test_nolock end
")
}

func Muti_goroutine_stdout_test_lock() {
    fmt.Printf("Muti_goroutine_stdout_test_lock")

    logger := slog.NewStdoutLoggerMt("Muti_goroutine_test_lock")

    for i := 0; i < 5; i++ {
        go logger_log_test(i, logger)
    }

    fmt.Printf("try sleep for a while
")
    time.Sleep(time.Millisecond * 100)
    fmt.Printf("sleep finished, Muti_goroutine_test_nolock end
")
}

func Muti_goroutine_log_file_test_nolock() {

    fmt.Printf("Muti_goroutine_log_file_test_nolock")

    logger := slog.NewBasicLoggerSt("Muti_goroutine_log_file_test_nolock", "Muti_goroutine_log_file_test_nolock.txt")

    for i := 0; i < 5; i++ {
        go logger_log_test(i, logger)
    }

    fmt.Printf("try sleep for a while
")
    time.Sleep(time.Millisecond * 100)
    fmt.Printf("sleep finished, Muti_goroutine_test_nolock end
")
}

func Muti_goroutine_log_file_test_lock() {
    fmt.Printf("Muti_goroutine_log_file_test_lock")

    logger := slog.NewBasicLoggerMt("Muti_goroutine_log_file_test_lock", "Muti_goroutine_log_file_test_lock.txt")

    for i := 0; i < 5; i++ {
        go logger_log_test(i, logger)
    }

    fmt.Printf("try sleep for a while
")
    time.Sleep(time.Millisecond * 100)
    fmt.Printf("sleep finished, Muti_goroutine_test_nolock end
")
}