监控

框架自身不带任何监控打点，只是提供了 ​Tracer ​接口，用户可以根据需求实现该接口，并通过 ​WithTracer ​Option 来注入。

// Tracer is executed at the start and finish of an RPC.
type Tracer interface {
    Start(ctx context.Context) context.Context
    Finish(ctx context.Context)
}

kitex-contrib 中提供了 prometheus 的监控扩展，使用方式：

• Client

import (
    "github.com/kitex-contrib/monitor-prometheus"
    kClient "github.com/cloudwego/kitex/client"
)

...
	client, _ := testClient.NewClient(
	"DestServiceName",
	kClient.WithTracer(prometheus.NewClientTracer(":9091", "/kitexclient")))

	resp, _ := client.Send(ctx, req)
...

• Server

import (
    "github.com/kitex-contrib/monitor-prometheus"
    kServer "github.com/cloudwego/kitex/server"
)

func main() {
...
	svr := xxxservice.NewServer(
	    &myServiceImpl{},
	    kServer.WithTracer(prometheus.NewServerTracer(":9092", "/kitexserver")))
	svr.Run()
...
}