jduo commented on a change in pull request #7994: URL: https://github.com/apache/arrow/pull/7994#discussion_r513690262
########## File path: java/flight/flight-core/src/main/java/org/apache/arrow/flight/auth2/ClientHandshakeWrapper.java ########## @@ -0,0 +1,102 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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 org.apache.arrow.flight.auth2; + +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.ExecutionException; + +import org.apache.arrow.flight.FlightRuntimeException; +import org.apache.arrow.flight.grpc.StatusUtils; +import org.apache.arrow.flight.impl.Flight.HandshakeRequest; +import org.apache.arrow.flight.impl.Flight.HandshakeResponse; +import org.apache.arrow.flight.impl.FlightServiceGrpc.FlightServiceStub; + +import io.grpc.StatusRuntimeException; +import io.grpc.stub.StreamObserver; + +/** + * Utility class for executing a handshake with a FlightServer. + */ +public class ClientHandshakeWrapper { + private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(ClientHandshakeWrapper.class); + + /** + * Do handshake for a client. The stub will be authenticated after this method returns. + * + * @param stub The service stub. + */ + public static void doClientHandshake(FlightServiceStub stub) { + final HandshakeObserver observer = new HandshakeObserver(); + try { + observer.requestObserver = stub.handshake(observer); + observer.requestObserver.onNext(HandshakeRequest.newBuilder().build()); + observer.requestObserver.onCompleted(); + try { + if (!observer.completed.get()) { + // TODO: ARROW-5681 + throw new RuntimeException("Unauthenticated"); + } + } catch (InterruptedException ex) { + Thread.currentThread().interrupt(); + throw ex; + } catch (ExecutionException ex) { + final FlightRuntimeException wrappedException = StatusUtils.fromThrowable(ex.getCause()); + logger.error("Failed on completing future", wrappedException); Review comment: Done ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
