Kratos

Logger用于对接各种日志库或日志平台可以用现成的或者自己实现Helper是在您的项目代码中实际需要调用的用于在业务代码里打日志Filter用于对输出日志进行过滤或魔改通常用于日志脱敏Valuer用于绑定一些全局的固定值或动态值比如时间戳、traceID或者实例id之类的东西到输出日志中

Logger统一了日志的接入方式Helper接口统一的日志库的调用方式。

二、Kratos

github.com/go-kratos/kratos/v2/log//若导入失败则需先获取包

get

github.com/go-kratos/kratos/v2/log

②使用

log.NewHelper(logger)//写入信息级别的日志

h.Info(使用

log.NewHelper(log.NewFilter(logger,//

按等级过滤//log.FilterLevel(log.LevelError),//

按key遮蔽log.FilterKey(username),//

按value遮蔽log.FilterValue(hello),),

h.Warn(warn

(osgithub.com/go-kratos/kratos/v2github.com/go-kratos/kratos/v2/loggithub.com/go-kratos/kratos/v2/middleware/tracinggithub.com/go-kratos/kratos/v2/transport/http

)func

log.NewHelper(logger)//写入信息级别的日志h.Info(使用

kratos

内置标准输出记录的日志)//写入错误级别的日志h.Errorf(用户名【%s】不存在,

张三)//

log.NewHelper(logger)h.Info(绑定了全局信息到日志中)//

log.NewHelper(log.NewFilter(logger,//

按等级过滤//log.FilterLevel(log.LevelError),//

按key遮蔽log.FilterKey(username),//

按value遮蔽log.FilterValue(hello),),)h.Warn(warn

123456)//日志中

http.NewServer(http.Address(:8080),)app

kratos.New(kratos.Name(测试log),kratos.Server(httpSrv,),)if

err

os.O_CREATE|os.O_WRONLY|os.O_APPEND,

0666)

(osgithub.com/go-kratos/kratos/v2github.com/go-kratos/kratos/v2/loggithub.com/go-kratos/kratos/v2/transport/http

)func

os.O_CREATE|os.O_WRONLY|os.O_APPEND,

0666)if

log.NewHelper(logger1)h1.Info(输出到日志文件中的日志信息)//创建

kratos

http.NewServer(http.Address(:8080),)app

kratos.New(kratos.Name(测试log),kratos.Server(httpSrv,),)if

err

语言实现的超快、结构化、分级的日志记录库性能极高比其他结构化日志记录包快4-10倍。

日志记录结构化以JSON等格式输出。

有关详细介绍见zap

http://dddd.com),zap.Int(attempt,

time.Second),

github.com/go-kratos/kratos/contrib/log/zap/v2github.com/go-kratos/kratos/v2github.com/go-kratos/kratos/v2/loggithub.com/go-kratos/kratos/v2/transport/httpgo.uber.org/zap

)func

http://dddd.com),zap.Int(attempt,

time.Second))httpSrv

http.NewServer(http.Address(:8080),)app

kratos.New(kratos.Name(测试log),kratos.Server(httpSrv,),)if

err

github.com/go-kratos/kratos/contrib/log/zap/v2github.com/go-kratos/kratos/v2github.com/go-kratos/kratos/v2/loggithub.com/go-kratos/kratos/v2/transport/httpgo.uber.org/zapgo.uber.org/zap/zapcore

)func

zapcore.NewJSONEncoder(zap.NewProductionEncoderConfig())//

WriteSyncer将日志写入文件f,

os.O_CREATE|os.O_WRONLY|os.O_APPEND,

0666)if

zap.NewAtomicLevelAt(zapcore.InfoLevel)//

创建Corecore

log.NewHelper(logger)h.Info(msg,

写入日志到文件)httpSrv

http.NewServer(http.Address(:8080),)app

kratos.New(kratos.Name(测试log),kratos.Server(httpSrv,),)if

err

github.com/go-kratos/kratos/contrib/log/zap/v2

②导入

github.com/go-kratos/kratos/contrib/log/zap/v2

③创建

github.com/go-kratos/kratos/contrib/log/zap/v2github.com/go-kratos/kratos/v2github.com/go-kratos/kratos/v2/loggithub.com/go-kratos/kratos/v2/transport/httpgo.uber.org/zap

)func

log.NewHelper(logger)h.Info(kratos适配的zap日志库)httpSrv

http.NewServer(http.Address(:8080),)app

kratos.New(kratos.Name(测试log),kratos.Server(httpSrv,),)if

err

Logger可用于快速适配各种日志库到框架中来仅需要实现一个最简单的Log方法。

Logger

(fmtgo.uber.org/zapgithub.com/go-kratos/kratos/v2/log

)var

{l.log.Warn(fmt.Sprint(Keyvalues

must

keyvals[i1].(string)continue}data

append(data,

zap.Any(fmt.Sprint(keyvals[i]),

keyvals[i1]))}switch

log.LevelDebug:l.log.Debug(msg,

data...)case

log.LevelError:l.log.Error(msg,

data...)case

log.LevelFatal:l.log.Fatal(msg,

data...)}return