com.google.cloud.bigtable.grpc.io

Class RefreshingOAuth2CredentialsInterceptor

java.lang.Object

com.google.cloud.bigtable.grpc.io.RefreshingOAuth2CredentialsInterceptor

All Implemented Interfaces:

io.grpc.ClientInterceptor

@InternalApi(value="For internal usage only")
public class RefreshingOAuth2CredentialsInterceptor
extends Object
implements io.grpc.ClientInterceptor

Client interceptor that authenticates all calls by binding header data provided by a credential. Typically this will populate the Authorization header but other headers may also be filled out.

Uses the new and simplified Google auth library: https://github.com/google/google-auth-library-java

TODO: COPIED FROM io.grpc.auth.ClientAuthInterceptor. The logic added here for initialization and locking could be moved back to gRPC. This implementation takes advantage of the fact that all of the Bigtable endpoints are OAuth2 based. It uses the OAuth AccessToken to get the token value and next refresh time. The refresh is scheduled asynchronously.

For internal use only - public for technical reasons.

Constructor Summary

Constructors

Constructor and Description
RefreshingOAuth2CredentialsInterceptor(ExecutorService scheduler, com.google.auth.oauth2.OAuth2Credentials credentials) Constructor for RefreshingOAuth2CredentialsInterceptor.

Method Summary

Modifier and Type	Method and Description
<ReqT,RespT> io.grpc.ClientCall<ReqT,RespT>	interceptCall(io.grpc.MethodDescriptor<ReqT,RespT> method, io.grpc.CallOptions callOptions, io.grpc.Channel next)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RefreshingOAuth2CredentialsInterceptor

public RefreshingOAuth2CredentialsInterceptor(ExecutorService scheduler,
                                              com.google.auth.oauth2.OAuth2Credentials credentials)

Constructor for RefreshingOAuth2CredentialsInterceptor.

Parameters:

scheduler - a ExecutorService object.

credentials - a OAuth2Credentials object.

Method Detail

interceptCall

public <ReqT,RespT> io.grpc.ClientCall<ReqT,RespT> interceptCall(io.grpc.MethodDescriptor<ReqT,RespT> method,
                                                                 io.grpc.CallOptions callOptions,
                                                                 io.grpc.Channel next)

Specified by:

interceptCall in interface io.grpc.ClientInterceptor