Golang 版的 PSR-3 Logger 规范，支持自定义 Logger

开源地址

• https://github.com/go-packagist/logger
• https://flc.io/go-packagist-logger/

说明： 设计参考 PHP PSR-3 规范，做了一些调整后实现。

安装

go get github.com/go-packagist/logger

教程

package main

import (
    "fmt"
    "github.com/go-packagist/logger"
    "time"
)

type CustomLogger struct {
    logger.Loggerable
}

var _ logger.Logger = (*CustomLogger)(nil)

func NewCustomLogger() *CustomLogger {
    c := &CustomLogger{
        Loggerable: func(level logger.Level, s string) {
            fmt.Println(fmt.Sprintf("%s %s: %s", time.Now().Format(time.DateTime), level.UpperString(), s))
        },
    }

    return c
}

func main() {
    c := NewCustomLogger()

    c.Emergencyf("Emergencyf: %s", "test")
    c.Alertf("Alertf: %s", "test")
    c.Criticalf("Criticalf: %s", "test")
    c.Errorf("Errorf: %s", "test")
    c.Warningf("Warningf: %s", "test")
    c.Noticef("Noticef: %s", "test")
    c.Infof("Infof: %s", "test")
    c.Debugf("Debugf: %s", "test")

    c.Emergency("Emergency: test")
    c.Alert("Alert: test")
    c.Critical("Critical: test")
    c.Error("Error: test")
    c.Warning("Warning: test")
    c.Notice("Notice: test")
    c.Info("Info: test")
    c.Debug("Debug: test")

    c.Log(logger.Emergency, "Log: Emergency: test")

    // Output:
    // 2023-03-28 23:18:13 EMERGENCY: Emergencyf: test
    // 2023-03-28 23:18:13 ALERT: Alertf: test
    // 2023-03-28 23:18:13 CRITICAL: Criticalf: test
    // 2023-03-28 23:18:13 ERROR: Errorf: test
    // 2023-03-28 23:18:13 WARNING: Warningf: test
    // 2023-03-28 23:18:13 NOTICE: Noticef: test
    // 2023-03-28 23:18:13 INFO: Infof: test
    // 2023-03-28 23:18:13 DEBUG: Debugf: test
    // 2023-03-28 23:18:13 EMERGENCY: Emergency: test
    // 2023-03-28 23:18:13 ALERT: Alert: test
    // 2023-03-28 23:18:13 CRITICAL: Critical: test
    // 2023-03-28 23:18:13 ERROR: Error: test
    // 2023-03-28 23:18:13 WARNING: Warning: test
    // 2023-03-28 23:18:13 NOTICE: Notice: test
    // 2023-03-28 23:18:13 INFO: Info: test
    // 2023-03-28 23:18:13 DEBUG: Debug: test
    // 2023-03-28 23:18:13 EMERGENCY: Log: Emergency: test
}

内置 Logger

• logger.NewNullLogger() - 啥也不干
• logger.NewPrintLogger() - 打印到控制台

参考资料

• PSR-3: Logger Interface：https://www.php-fig.org/psr/psr-3/
• PSR Log：https://github.com/php-fig/log
• Go Redis: https://github.com/redis/go-redis/ （参考了一些设计思路）