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kratos/examples/metrics/main.go

92 lines
2.3 KiB

package main
import (
"context"
"fmt"
"log"
"github.com/go-kratos/kratos/v2/middleware/metrics"
prom "github.com/go-kratos/prometheus/metrics"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/go-kratos/kratos/examples/helloworld/helloworld"
"github.com/go-kratos/kratos/v2"
"github.com/go-kratos/kratos/v2/transport/grpc"
"github.com/go-kratos/kratos/v2/transport/http"
"github.com/prometheus/client_golang/prometheus"
)
// go build -ldflags "-X main.Version=x.y.z"
var (
// Name is the name of the compiled software.
Name = "metrics"
// Version is the version of the compiled software.
Version = "v1.0.0"
_metricSeconds = prometheus.NewHistogramVec(prometheus.HistogramOpts{
Namespace: "server",
Subsystem: "requests",
Name: "duration_ms",
Help: "server requests duration(ms).",
Buckets: []float64{5, 10, 25, 50, 100, 250, 500, 1000},
}, []string{"kind", "operation"})
_metricRequests = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: "client",
Subsystem: "requests",
Name: "code_total",
Help: "The total number of processed requests",
}, []string{"kind", "operation", "code", "reason"})
)
// server is used to implement helloworld.GreeterServer.
type server struct {
helloworld.UnimplementedGreeterServer
}
// SayHello implements helloworld.GreeterServer
func (s *server) SayHello(ctx context.Context, in *helloworld.HelloRequest) (*helloworld.HelloReply, error) {
return &helloworld.HelloReply{Message: fmt.Sprintf("Hello %+v", in.Name)}, nil
}
func init() {
prometheus.MustRegister(_metricSeconds, _metricRequests)
}
func main() {
grpcSrv := grpc.NewServer(
grpc.Address(":9000"),
grpc.Middleware(
metrics.Server(
metrics.WithSeconds(prom.NewHistogram(_metricSeconds)),
metrics.WithRequests(prom.NewCounter(_metricRequests)),
),
),
)
httpSrv := http.NewServer(
http.Address(":8000"),
http.Middleware(
metrics.Server(
metrics.WithSeconds(prom.NewHistogram(_metricSeconds)),
metrics.WithRequests(prom.NewCounter(_metricRequests)),
),
),
)
httpSrv.Handle("/metrics", promhttp.Handler())
s := &server{}
helloworld.RegisterGreeterServer(grpcSrv, s)
helloworld.RegisterGreeterHTTPServer(httpSrv, s)
app := kratos.New(
kratos.Name(Name),
kratos.Server(
httpSrv,
grpcSrv,
),
)
if err := app.Run(); err != nil {
log.Fatal(err)
}
}