| /* |
| * |
| * Copyright 2018 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. |
| * |
| */ |
| |
| package main |
| |
| import ( |
| "context" |
| "log" |
| "os" |
| "time" |
| |
| epb "google.golang.org/genproto/googleapis/rpc/errdetails" |
| "google.golang.org/grpc" |
| pb "google.golang.org/grpc/examples/helloworld/helloworld" |
| "google.golang.org/grpc/status" |
| ) |
| |
| func main() { |
| // Set up a connection to the server. |
| conn, err := grpc.Dial("localhost:50051", grpc.WithInsecure()) |
| if err != nil { |
| log.Fatalf("did not connect: %v", err) |
| } |
| defer func() { |
| if e := conn.Close(); e != nil { |
| log.Printf("failed to close connection: %s", e) |
| } |
| }() |
| c := pb.NewGreeterClient(conn) |
| |
| ctx, cancel := context.WithTimeout(context.Background(), time.Second) |
| defer cancel() |
| r, err := c.SayHello(ctx, &pb.HelloRequest{Name: "world"}) |
| if err != nil { |
| s := status.Convert(err) |
| for _, d := range s.Details() { |
| switch info := d.(type) { |
| case *epb.QuotaFailure: |
| log.Printf("Quota failure: %s", info) |
| default: |
| log.Printf("Unexpected type: %s", info) |
| } |
| } |
| os.Exit(1) |
| } |
| log.Printf("Greeting: %s", r.Message) |
| } |