| /* |
| * 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.sdk.fn.data; |
| |
| import static org.apache.beam.sdk.util.WindowedValue.valueInGlobalWindow; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.hamcrest.Matchers.contains; |
| import static org.hamcrest.Matchers.empty; |
| import static org.hamcrest.Matchers.instanceOf; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.concurrent.ExecutionException; |
| import org.apache.beam.sdk.coders.Coder; |
| import org.apache.beam.sdk.coders.StringUtf8Coder; |
| import org.apache.beam.sdk.transforms.windowing.GlobalWindow; |
| import org.apache.beam.sdk.util.ByteStringOutputStream; |
| import org.apache.beam.sdk.util.WindowedValue; |
| import org.apache.beam.vendor.grpc.v1p43p2.com.google.protobuf.ByteString; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.ExpectedException; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for {@link BeamFnDataInboundObserver}. */ |
| @RunWith(JUnit4.class) |
| public class BeamFnDataInboundObserverTest { |
| private static final Coder<WindowedValue<String>> CODER = |
| WindowedValue.getFullCoder(StringUtf8Coder.of(), GlobalWindow.Coder.INSTANCE); |
| private static final LogicalEndpoint DATA_ENDPOINT = LogicalEndpoint.data("777L", "999L"); |
| |
| @Rule public ExpectedException thrown = ExpectedException.none(); |
| |
| @Test |
| public void testDecodingElements() throws Exception { |
| Collection<WindowedValue<String>> values = new ArrayList<>(); |
| InboundDataClient readFuture = CompletableFutureInboundDataClient.create(); |
| BeamFnDataInboundObserver observer = |
| new BeamFnDataInboundObserver( |
| DATA_ENDPOINT, DecodingFnDataReceiver.create(CODER, values::add), readFuture); |
| |
| // Test decoding multiple messages |
| observer.accept(dataWith("ABC", "DEF", "GHI"), false); |
| assertThat( |
| values, |
| contains( |
| valueInGlobalWindow("ABC"), valueInGlobalWindow("DEF"), valueInGlobalWindow("GHI"))); |
| values.clear(); |
| |
| // Test empty message signaling end of stream |
| assertFalse(readFuture.isDone()); |
| observer.accept(ByteString.EMPTY, true); |
| assertTrue(readFuture.isDone()); |
| |
| // Test messages after stream is finished are discarded |
| observer.accept(dataWith("ABC", "DEF", "GHI"), false); |
| assertThat(values, empty()); |
| } |
| |
| @Test |
| public void testConsumptionFailureCompletesReadFutureAndDiscardsMessages() throws Exception { |
| InboundDataClient readClient = CompletableFutureInboundDataClient.create(); |
| BeamFnDataInboundObserver observer = |
| new BeamFnDataInboundObserver( |
| DATA_ENDPOINT, DecodingFnDataReceiver.create(CODER, this::throwOnDefValue), readClient); |
| |
| assertFalse(readClient.isDone()); |
| observer.accept(dataWith("ABC", "DEF", "GHI"), false); |
| assertTrue(readClient.isDone()); |
| |
| thrown.expect(ExecutionException.class); |
| thrown.expectCause(instanceOf(RuntimeException.class)); |
| thrown.expectMessage("Failure"); |
| readClient.awaitCompletion(); |
| } |
| |
| private void throwOnDefValue(WindowedValue<String> value) { |
| if ("DEF".equals(value.getValue())) { |
| throw new RuntimeException("Failure"); |
| } |
| } |
| |
| private ByteString dataWith(String... values) throws Exception { |
| ByteStringOutputStream output = new ByteStringOutputStream(); |
| for (String value : values) { |
| CODER.encode(valueInGlobalWindow(value), output); |
| } |
| return output.toByteString(); |
| } |
| } |