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README
Apache-2.0

📝 logit

Go Doc License Coverage Test

logit 是一个基于级别控制的高性能纯结构化日志库,可以应用于所有的 GoLang 应用程序中。

Read me in English

🥇 功能特性

  • 兼容标准库 Handler 的扩展设计,并且提供了更高的性能。
  • 支持日志级别控制,一共有四个日志级别,分别是 debug,info,warn,error。
  • 支持键值对形式的结构化日志记录,同时对格式化操作也有支持。
  • 支持以 Text/Json 形式输出日志信息,方便对日志进行解析。
  • 支持异步回写日志,提供高性能缓冲写出器模块,减少 IO 的访问次数。
  • 提供调优使用的全局配置,对一些高级配置更贴合实际业务的需求。
  • 加入 Context 机制,更优雅地使用日志,并支持业务分组划分。
  • 支持拦截器模式,可以从 context 注入外部常量或变量,简化日志输出流程。
  • 支持错误监控,可以很方便地进行错误统计和告警。
  • 支持日志按大小自动分割,并支持按照时间和数量自动清理。
  • 支持多种配置文件序列化成 option,比如 json/yaml/toml/bson,然后创建日志记录器。

历史版本的特性请查看 HISTORY.md。未来版本的新特性和计划请查看 FUTURE.md

由于 Go1.21 增加了 slog 日志包,基本确定了 Go 风格的日志 API,所以 logit v1.5.0 版本开始也调整为类似的风格,并且提供更多的功能和更高的性能。

🚀 安装方式

$ go get -u github.com/FishGoddess/logit

📖 参考案例

package main

import (
	"context"
	"fmt"

	"github.com/FishGoddess/logit"
)

func main() {
	// Use default logger to log.
	// By default, logs will be output to stdout.
	// logit.Default() returns the default logger, but we also provide some common logging functions.
	logit.Info("hello from logit", "key", 123)
	logit.Default().Info("hello from logit", "key", 123)

	// Use a new logger to log.
	// By default, logs will be output to stdout.
	logger := logit.NewLogger()

	logger.Debug("new version of logit", "version", "1.5.0-alpha", "date", 20231122)
	logger.Error("new version of logit", "version", "1.5.0-alpha", "date", 20231122)

	type user struct {
		ID   int64  `json:"id"`
		Name string `json:"name"`
	}

	u := user{123456, "fishgoddess"}
	logger.Info("user information", "user", u, "pi", 3.14)

	// Yep, I know you want to output logs to a file, try WithFile option.
	// The path in WithFile is where the log file will be stored.
	// Also, it's a good choice to call logger.Close() when program shutdown.
	logger = logit.NewLogger(logit.WithFile("./logit.log"))
	defer logger.Close()

	logger.Info("check where I'm logged", "file", "logit.log")

	// What if I want to use default logger and output logs to a file? Try SetDefault.
	// It sets a logger to default and you can use it by package functions or Default().
	logit.SetDefault(logger)
	logit.Warn("this is from default logger", "pi", 3.14, "default", true)

	// If you want to change level of logger to info, try WithInfoLevel.
	// Other levels is similar to info level.
	logger = logit.NewLogger(logit.WithInfoLevel())

	logger.Debug("debug logs will be ignored")
	logger.Info("info logs can be logged")

	// If you want to pass logger by context, use NewContext and FromContext.
	ctx := logit.NewContext(context.Background(), logger)

	logger = logit.FromContext(ctx)
	logger.Info("logger from context", "from", "context")

	// Don't want to panic when new a logger? Try NewLoggerGracefully.
	logger, err := logit.NewLoggerGracefully(logit.WithFile(""))
	if err != nil {
		fmt.Println("new logger gracefully failed:", err)
	}
}

更多使用案例请查看 _examples 目录。

🔥 性能测试

$ make bench
goos: linux
goarch: amd64
cpu: AMD EPYC 7K62 48-Core Processor

BenchmarkLogitLogger-2                   1486184               810 ns/op               0 B/op          0 allocs/op
BenchmarkLogitLoggerTextHandler-2        1000000              1080 ns/op               0 B/op          0 allocs/op
BenchmarkLogitLoggerJsonHandler-2         847864              1393 ns/op             120 B/op          3 allocs/op
BenchmarkLogitLoggerPrint-2              1222302               981 ns/op              48 B/op          1 allocs/op
BenchmarkSlogLoggerTextHandler-2          725522              1629 ns/op               0 B/op          0 allocs/op
BenchmarkSlogLoggerJsonHandler-2          583214              2030 ns/op             120 B/op          3 allocs/op
BenchmarkZeroLogLogger-2                 1929276               613 ns/op               0 B/op          0 allocs/op
BenchmarkZapLogger-2                      976855              1168 ns/op             216 B/op          2 allocs/op
BenchmarkLogrusLogger-2                   231723              4927 ns/op            2080 B/op         32 allocs/op

BenchmarkLogitFile-2                      624774              1935 ns/op               0 B/op          0 allocs/op
BenchmarkLogitFileWithBuffer-2           1378076               873 ns/op               0 B/op          0 allocs/op
BenchmarkLogitFileWithBatch-2            1367479               883 ns/op               0 B/op          0 allocs/op
BenchmarkSlogFile-2                       407590              2944 ns/op               0 B/op          0 allocs/op
BenchmarkZeroLogFile-2                    634375              1810 ns/op               0 B/op          0 allocs/op
BenchmarkZapFile-2                        382790              2641 ns/op             216 B/op          2 allocs/op
BenchmarkLogrusFile-2                     174944              6491 ns/op            2080 B/op         32 allocs/op

注:WithBuffer 和 WithBatch 分别是使用了缓冲器和批量写入的方式进行测试。

测试文件:_examples/performance_test.go

👥 贡献者

如果您觉得 logit 缺少您需要的功能,请不要犹豫,马上参与进来,发起一个 issue

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简介

使用 Go 编写的高性能可扩展的日志库 - A high-performance and extensible logging foundation for Go applications 展开 收起
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