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

开源地址

• https://github.com/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/ （参考设计思路）