mirror of https://github.com/grpc/grpc-go.git
67 lines
1.7 KiB
Go
67 lines
1.7 KiB
Go
/*
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*
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* Copyright 2023 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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// Binary server demonstrates how to return specific error codes in gRPC
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// responses.
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package main
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import (
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"context"
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"flag"
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"fmt"
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"log"
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"net"
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"google.golang.org/grpc"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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pb "google.golang.org/grpc/examples/helloworld/helloworld"
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)
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var port = flag.Int("port", 50052, "port number")
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// server is used to implement helloworld.GreeterServer.
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type server struct {
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pb.UnimplementedGreeterServer
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}
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// SayHello implements helloworld.GreeterServer.
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func (s *server) SayHello(_ context.Context, in *pb.HelloRequest) (*pb.HelloReply, error) {
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if in.Name == "" {
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return nil, status.Errorf(codes.InvalidArgument, "request missing required field: Name")
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}
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return &pb.HelloReply{Message: "Hello " + in.Name}, nil
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}
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func main() {
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flag.Parse()
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address := fmt.Sprintf(":%v", *port)
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lis, err := net.Listen("tcp", address)
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if err != nil {
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log.Fatalf("failed to listen: %v", err)
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}
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s := grpc.NewServer()
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pb.RegisterGreeterServer(s, &server{})
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if err := s.Serve(lis); err != nil {
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log.Fatalf("failed to serve: %v", err)
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}
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}
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