抽取了 kubernetes 日志 logger。可用于业务开发。
一个简单的示例，创建一个 main.go 文件，内容如下：
package main
import (
"context"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
log "klog"
"klog/klog"
)
func main() {
// 初始化logger
loggerConfig := &zap.Config{}
l, _ := loggerConfig.Build(zap.AddStacktrace(zapcore.PanicLevel), zap.AddCallerSkip(1))
klog.InitLogger(l)
// Debug、Info(with field)、Warnf、Errorw使用
log.Debug("This is a debug message")
log.Info("This is a info message", log.Int32("int_key", 10))
log.Warnf("This is a formatted %s message", "WARN")
log.Errorw("Message printed with Errorw",
"X-Request-ID", "fbf54504-64da-4088-9b86-67824a7fb508")
// Context使用
ctx := context.WithValue(context.Background(),
"requestID", "2a7b9f24-4ace-4b2a-9464-69238b45b953")
log.L(ctx).Infof("fetch datasource success")
log.L(ctx).Errorf("fetch datasource failed")
// WithValues使用
lv := log.WithValues("X-Request-ID", "7a7b9f24-4cae-4b2a-9464-69088b45b904")
lv.Infow("Info message printed with [WithValues] logger")
lv.Infow("Debug message printed with [WithValues] logger")
ln := lv.WithName("test")
ln.Info("Message printed with [WithName] logger")
// Level使用
log.V(log.InfoLevel).Info("This is a V level message")
log.V(log.ErrorLevel).Infow("This is a V level message with fields",
"X-Request-ID", "7a7b9f24-4cae-4b2a-9464-69088b45b904")
log.V(0).Info("This is a V level message")
log.V(1).Info("This is a V level message")
}执行代码：
$ go run main.go
2023-03-28 10:06:09.843 INFO example/main.go:19 This is a info message {"int_key": 10}
2023-03-28 10:06:09.843 WARN example/main.go:20 This is a formatted WARN message
2023-03-28 10:06:09.843 ERROR example/main.go:21 Message printed with Errorw {"X-Request-ID": "fbf54504-64da-4088-9b86-67824a7fb508"}
2023-03-28 10:06:09.843 INFO example/main.go:25 fetch datasource success {"requestID": "2a7b9f24-4ace-4b2a-9464-69238b45b953"}
2023-03-28 10:06:09.843 ERROR example/main.go:26 fetch datasource failed {"requestID": "2a7b9f24-4ace-4b2a-9464-69238b45b953"}
2023-03-28 10:06:09.843 INFO example/main.go:30 Info message printed with [WithValues] logger {"X-Request-ID": "7a7b9f24-4cae-4b2a-9464-69088b45b904"}
2023-03-28 10:06:09.843 INFO example/main.go:31 Debug message printed with [WithValues] logger {"X-Request-ID": "7a7b9f24-4cae-4b2a-9464-69088b45b904"}
2023-03-28 10:06:09.843 INFO test example/main.go:34 Message printed with [WithName] logger {"X-Request-ID": "7a7b9f24-4cae-4b2a-9464-69088b45b904"}
2023-03-28 10:06:09.843 INFO example/main.go:37 This is a V level message
2023-03-28 10:06:09.843 ERROR example/main.go:38 This is a V level message with fields {"X-Request-ID": "7a7b9f24-4cae-4b2a-9464-69088b45b904"}
2023-03-28 10:06:09.843 INFO example/main.go:39 This is a V level message
2023-03-28 10:06:09.843 WARN example/main.go:40 This is a V level message上述代码使用 falconluca/klog 包默认的全局 logger，分别使用了 Context使用 、WithValues使用 和 Level使用 级别打印了一条日志。