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73 lines
2.1 KiB
Go
73 lines
2.1 KiB
Go
/*
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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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"crypto/tls"
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"log"
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"time"
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"golang.org/x/net/context"
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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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