| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| package internal |
| |
| import ( |
| "context" |
| "log" |
| "net" |
| ) |
| |
| import ( |
| "google.golang.org/grpc" |
| ) |
| |
| var ( |
| s *grpc.Server |
| ) |
| |
| // server is used to implement helloworld.GreeterServer. |
| type server struct { |
| UnimplementedGreeterServer |
| } |
| |
| // SayHello implements helloworld.GreeterServer |
| func (s *server) SayHello(ctx context.Context, in *HelloRequest) (*HelloReply, error) { |
| log.Printf("Received: %v", in.GetName()) |
| return &HelloReply{Message: "Hello " + in.GetName()}, nil |
| } |
| |
| // InitGrpcServer creates global gRPC server. |
| func InitGrpcServer() { |
| port := ":30000" |
| |
| lis, err := net.Listen("tcp", port) |
| if err != nil { |
| log.Fatalf("failed to listen: %v", err) |
| } |
| s = grpc.NewServer() |
| RegisterGreeterServer(s, &server{}) |
| if err := s.Serve(lis); err != nil { |
| log.Fatalf("failed to serve: %v", err) |
| } |
| } |
| |
| // ShutdownGrpcServer shuts down gRPC server gracefully |
| func ShutdownGrpcServer() { |
| if s == nil { |
| return |
| } |
| s.GracefulStop() |
| } |