/* * * Copyright 2022 gRPC authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ // Binary server is an example server to illustrate the use of the stats handler. package main import ( "context" "flag" "fmt" "log" "net" "time" "google.golang.org/grpc" echogrpc "google.golang.org/grpc/examples/features/proto/echo" echopb "google.golang.org/grpc/examples/features/proto/echo" "google.golang.org/grpc/examples/features/stats_monitoring/statshandler" ) var port = flag.Int("port", 50051, "the port to serve on") type server struct { echogrpc.UnimplementedEchoServer } func (s *server) UnaryEcho(_ context.Context, req *echopb.EchoRequest) (*echopb.EchoResponse, error) { time.Sleep(2 * time.Second) return &echopb.EchoResponse{Message: req.Message}, nil } func main() { flag.Parse() lis, err := net.Listen("tcp", fmt.Sprintf(":%d", *port)) if err != nil { log.Fatalf("failed to listen on port %d: %v", *port, err) } log.Printf("server listening at %v\n", lis.Addr()) s := grpc.NewServer(grpc.StatsHandler(statshandler.New())) echogrpc.RegisterEchoServer(s, &server{}) if err := s.Serve(lis); err != nil { log.Fatalf("failed to serve: %v", err) } }