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