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72 lines
2.1 KiB
72 lines
2.1 KiB
/* |
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* |
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* Copyright 2018 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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// The client demonstrates how to supply an OAuth2 token for every RPC. |
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package main |
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import ( |
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"context" |
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"crypto/tls" |
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"log" |
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"time" |
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"golang.org/x/oauth2" |
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"google.golang.org/grpc" |
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"google.golang.org/grpc/credentials" |
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"google.golang.org/grpc/credentials/oauth" |
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pb "google.golang.org/grpc/examples/helloworld/helloworld" |
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) |
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func main() { |
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perRPC := oauth.NewOauthAccess(fetchToken()) |
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opts := []grpc.DialOption{ |
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// In addition to the following grpc.DialOption, callers may also use |
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// the grpc.CallOption grpc.PerRPCCredentials with the RPC invocation |
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// itself. |
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// See: https://godoc.org/google.golang.org/grpc#PerRPCCredentials |
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grpc.WithPerRPCCredentials(perRPC), |
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// oauth.NewOauthAccess requires the configuration of transport |
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// credentials. |
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grpc.WithTransportCredentials( |
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credentials.NewTLS(&tls.Config{InsecureSkipVerify: true}), |
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), |
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} |
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conn, err := grpc.Dial(":8080", opts...) |
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if err != nil { |
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log.Fatalf("did not connect: %v", err) |
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} |
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defer conn.Close() |
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c := pb.NewGreeterClient(conn) |
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ctx, cancel := context.WithTimeout(context.Background(), time.Second) |
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defer cancel() |
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r, err := c.SayHello(ctx, &pb.HelloRequest{Name: "authenticated-client"}) |
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if err != nil { |
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log.Fatalf("could not greet: %v", err) |
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} |
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log.Printf("Greeting: %s", r.Message) |
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} |
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// fetchToken simulates a token lookup and omits the details of proper token |
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// acquisition. For examples of how to acquire an OAuth2 token, see: |
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// https://godoc.org/golang.org/x/oauth2 |
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func fetchToken() *oauth2.Token { |
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return &oauth2.Token{ |
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AccessToken: "some-secret-token", |
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} |
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}
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