| /* |
| * 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.beam.runners.fnexecution.state; |
| |
| import static org.hamcrest.CoreMatchers.equalTo; |
| import static org.junit.Assert.assertThat; |
| import static org.mockito.Matchers.any; |
| import static org.mockito.Mockito.never; |
| import static org.mockito.Mockito.times; |
| import static org.mockito.Mockito.verify; |
| |
| import java.nio.charset.StandardCharsets; |
| import java.util.concurrent.BlockingDeque; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.LinkedBlockingDeque; |
| import java.util.concurrent.TimeUnit; |
| import org.apache.beam.model.fnexecution.v1.BeamFnApi; |
| import org.apache.beam.sdk.fn.test.TestStreams; |
| import org.apache.beam.vendor.grpc.v1p21p0.com.google.protobuf.ByteString; |
| import org.apache.beam.vendor.grpc.v1p21p0.io.grpc.stub.StreamObserver; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| import org.mockito.Mock; |
| import org.mockito.Mockito; |
| import org.mockito.MockitoAnnotations; |
| |
| /** Tests for {@link org.apache.beam.runners.fnexecution.state.GrpcStateService}. */ |
| @RunWith(JUnit4.class) |
| public class GrpcStateServiceTest { |
| private static final long TIMEOUT_MS = 30 * 1000; |
| |
| private GrpcStateService stateService; |
| |
| @Mock private StreamObserver<BeamFnApi.StateResponse> responseObserver; |
| |
| @Mock private StateRequestHandler handler; |
| |
| @Before |
| public void setUp() throws Exception { |
| MockitoAnnotations.initMocks(this); |
| stateService = GrpcStateService.create(); |
| } |
| |
| /** |
| * After a handler has been registered with {@link |
| * GrpcStateService#registerForProcessBundleInstructionId(String, StateRequestHandler)}, the |
| * {@link GrpcStateService} should delegate requests through {@link |
| * GrpcStateService#state(StreamObserver)} to the registered handler. |
| */ |
| @Test |
| public void testStateRequestsHandledByRegisteredHandlers() throws Exception { |
| // register handler |
| String bundleInstructionId = "bundle_instruction"; |
| stateService.registerForProcessBundleInstructionId(bundleInstructionId, handler); |
| |
| // open state stream |
| StreamObserver requestObserver = stateService.state(responseObserver); |
| |
| // send state request |
| BeamFnApi.StateRequest request = |
| BeamFnApi.StateRequest.newBuilder().setInstructionId(bundleInstructionId).build(); |
| requestObserver.onNext(request); |
| |
| // assert behavior |
| verify(handler).handle(request); |
| } |
| |
| @Test |
| public void testHandlerResponseSentToStateStream() throws Exception { |
| // define handler behavior |
| ByteString expectedResponseData = |
| ByteString.copyFrom("EXPECTED_RESPONSE_DATA", StandardCharsets.UTF_8); |
| String bundleInstructionId = "EXPECTED_BUNDLE_INSTRUCTION_ID"; |
| BeamFnApi.StateResponse.Builder expectedBuilder = |
| BeamFnApi.StateResponse.newBuilder() |
| .setGet(BeamFnApi.StateGetResponse.newBuilder().setData(expectedResponseData)); |
| StateRequestHandler dummyHandler = |
| request -> { |
| CompletableFuture<BeamFnApi.StateResponse.Builder> response = new CompletableFuture<>(); |
| response.complete(expectedBuilder); |
| return response; |
| }; |
| |
| // define observer behavior |
| BlockingDeque<BeamFnApi.StateResponse> responses = new LinkedBlockingDeque<>(); |
| StreamObserver<BeamFnApi.StateResponse> recordingResponseObserver = |
| TestStreams.withOnNext(responses::add).build(); |
| recordingResponseObserver = Mockito.spy(recordingResponseObserver); |
| |
| // register handler |
| stateService.registerForProcessBundleInstructionId(bundleInstructionId, dummyHandler); |
| |
| // open state stream |
| StreamObserver<BeamFnApi.StateRequest> requestObserver = |
| stateService.state(recordingResponseObserver); |
| |
| // send state request |
| BeamFnApi.StateRequest request = |
| BeamFnApi.StateRequest.newBuilder().setInstructionId(bundleInstructionId).build(); |
| requestObserver.onNext(request); |
| |
| // wait for response |
| BeamFnApi.StateResponse response = responses.poll(TIMEOUT_MS, TimeUnit.MILLISECONDS); |
| |
| // assert that responses contain a built state response |
| verify(recordingResponseObserver, times(1)).onNext(any()); |
| verify(recordingResponseObserver, never()).onCompleted(); |
| verify(recordingResponseObserver, never()).onError(any()); |
| assertThat(response.getGet().getData(), equalTo(expectedResponseData)); |
| } |
| } |