/* * 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 * <p> * http://www.apache.org/licenses/LICENSE-2.0 * <p> * 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.flink.streaming.api.operators.co; import org.apache.flink.api.common.state.ValueState; import org.apache.flink.api.common.state.ValueStateDescriptor; import org.apache.flink.api.common.typeinfo.BasicTypeInfo; import org.apache.flink.api.common.typeutils.base.StringSerializer; import org.apache.flink.api.java.functions.KeySelector; import org.apache.flink.runtime.checkpoint.OperatorSubtaskState; import org.apache.flink.streaming.api.TimeDomain; import org.apache.flink.streaming.api.TimerService; import org.apache.flink.streaming.api.functions.co.CoProcessFunction; import org.apache.flink.streaming.api.watermark.Watermark; import org.apache.flink.streaming.runtime.streamrecord.StreamRecord; import org.apache.flink.streaming.util.KeyedTwoInputStreamOperatorTestHarness; import org.apache.flink.streaming.util.TestHarnessUtil; import org.apache.flink.streaming.util.TwoInputStreamOperatorTestHarness; import org.apache.flink.util.Collector; import org.apache.flink.util.TestLogger; import org.junit.Test; import java.io.IOException; import java.util.concurrent.ConcurrentLinkedQueue; import static org.junit.Assert.assertEquals; /** * Tests {@link LegacyKeyedCoProcessOperator}. */ public class LegacyKeyedCoProcessOperatorTest extends TestLogger { @Test public void testTimestampAndWatermarkQuerying() throws Exception { LegacyKeyedCoProcessOperator<String, Integer, String, String> operator = new LegacyKeyedCoProcessOperator<>(new WatermarkQueryingProcessFunction()); TwoInputStreamOperatorTestHarness<Integer, String, String> testHarness = new KeyedTwoInputStreamOperatorTestHarness<>( operator, new IntToStringKeySelector<>(), new IdentityKeySelector<String>(), BasicTypeInfo.STRING_TYPE_INFO); testHarness.setup(); testHarness.open(); testHarness.processWatermark1(new Watermark(17)); testHarness.processWatermark2(new Watermark(17)); testHarness.processElement1(new StreamRecord<>(5, 12L)); testHarness.processWatermark1(new Watermark(42)); testHarness.processWatermark2(new Watermark(42)); testHarness.processElement2(new StreamRecord<>("6", 13L)); ConcurrentLinkedQueue<Object> expectedOutput = new ConcurrentLinkedQueue<>(); expectedOutput.add(new Watermark(17L)); expectedOutput.add(new StreamRecord<>("5WM:17 TS:12", 12L)); expectedOutput.add(new Watermark(42L)); expectedOutput.add(new StreamRecord<>("6WM:42 TS:13", 13L)); TestHarnessUtil.assertOutputEquals("Output was not correct.", expectedOutput, testHarness.getOutput()); testHarness.close(); } @Test public void testTimestampAndProcessingTimeQuerying() throws Exception { LegacyKeyedCoProcessOperator<String, Integer, String, String> operator = new LegacyKeyedCoProcessOperator<>(new ProcessingTimeQueryingProcessFunction()); TwoInputStreamOperatorTestHarness<Integer, String, String> testHarness = new KeyedTwoInputStreamOperatorTestHarness<>( operator, new IntToStringKeySelector<>(), new IdentityKeySelector<String>(), BasicTypeInfo.STRING_TYPE_INFO); testHarness.setup(); testHarness.open(); testHarness.setProcessingTime(17); testHarness.processElement1(new StreamRecord<>(5)); testHarness.setProcessingTime(42); testHarness.processElement2(new StreamRecord<>("6")); ConcurrentLinkedQueue<Object> expectedOutput = new ConcurrentLinkedQueue<>(); expectedOutput.add(new StreamRecord<>("5PT:17 TS:null")); expectedOutput.add(new StreamRecord<>("6PT:42 TS:null")); TestHarnessUtil.assertOutputEquals("Output was not correct.", expectedOutput, testHarness.getOutput()); testHarness.close(); } @Test public void testEventTimeTimers() throws Exception { LegacyKeyedCoProcessOperator<String, Integer, String, String> operator = new LegacyKeyedCoProcessOperator<>(new EventTimeTriggeringProcessFunction()); TwoInputStreamOperatorTestHarness<Integer, String, String> testHarness = new KeyedTwoInputStreamOperatorTestHarness<>( operator, new IntToStringKeySelector<>(), new IdentityKeySelector<String>(), BasicTypeInfo.STRING_TYPE_INFO); testHarness.setup(); testHarness.open(); testHarness.processElement1(new StreamRecord<>(17, 42L)); testHarness.processElement2(new StreamRecord<>("18", 42L)); testHarness.processWatermark1(new Watermark(5)); testHarness.processWatermark2(new Watermark(5)); testHarness.processWatermark1(new Watermark(6)); testHarness.processWatermark2(new Watermark(6)); ConcurrentLinkedQueue<Object> expectedOutput = new ConcurrentLinkedQueue<>(); expectedOutput.add(new StreamRecord<>("INPUT1:17", 42L)); expectedOutput.add(new StreamRecord<>("INPUT2:18", 42L)); expectedOutput.add(new StreamRecord<>("1777", 5L)); expectedOutput.add(new Watermark(5L)); expectedOutput.add(new StreamRecord<>("1777", 6L)); expectedOutput.add(new Watermark(6L)); TestHarnessUtil.assertOutputEquals("Output was not correct.", expectedOutput, testHarness.getOutput()); testHarness.close(); } @Test public void testProcessingTimeTimers() throws Exception { LegacyKeyedCoProcessOperator<String, Integer, String, String> operator = new LegacyKeyedCoProcessOperator<>(new ProcessingTimeTriggeringProcessFunction()); TwoInputStreamOperatorTestHarness<Integer, String, String> testHarness = new KeyedTwoInputStreamOperatorTestHarness<>( operator, new IntToStringKeySelector<>(), new IdentityKeySelector<String>(), BasicTypeInfo.STRING_TYPE_INFO); testHarness.setup(); testHarness.open(); testHarness.processElement1(new StreamRecord<>(17)); testHarness.processElement2(new StreamRecord<>("18")); testHarness.setProcessingTime(5); testHarness.setProcessingTime(6); ConcurrentLinkedQueue<Object> expectedOutput = new ConcurrentLinkedQueue<>(); expectedOutput.add(new StreamRecord<>("INPUT1:17")); expectedOutput.add(new StreamRecord<>("INPUT2:18")); expectedOutput.add(new StreamRecord<>("1777")); expectedOutput.add(new StreamRecord<>("1777")); TestHarnessUtil.assertOutputEquals("Output was not correct.", expectedOutput, testHarness.getOutput()); testHarness.close(); } /** * Verifies that we don't have leakage between different keys. */ @Test public void testEventTimeTimerWithState() throws Exception { LegacyKeyedCoProcessOperator<String, Integer, String, String> operator = new LegacyKeyedCoProcessOperator<>(new EventTimeTriggeringStatefulProcessFunction()); TwoInputStreamOperatorTestHarness<Integer, String, String> testHarness = new KeyedTwoInputStreamOperatorTestHarness<>( operator, new IntToStringKeySelector<>(), new IdentityKeySelector<String>(), BasicTypeInfo.STRING_TYPE_INFO); testHarness.setup(); testHarness.open(); testHarness.processWatermark1(new Watermark(1)); testHarness.processWatermark2(new Watermark(1)); testHarness.processElement1(new StreamRecord<>(17, 0L)); // should set timer for 6 testHarness.processElement1(new StreamRecord<>(13, 0L)); // should set timer for 6 testHarness.processWatermark1(new Watermark(2)); testHarness.processWatermark2(new Watermark(2)); testHarness.processElement1(new StreamRecord<>(13, 1L)); // should delete timer testHarness.processElement2(new StreamRecord<>("42", 1L)); // should set timer for 7 testHarness.processWatermark1(new Watermark(6)); testHarness.processWatermark2(new Watermark(6)); testHarness.processWatermark1(new Watermark(7)); testHarness.processWatermark2(new Watermark(7)); ConcurrentLinkedQueue<Object> expectedOutput = new ConcurrentLinkedQueue<>(); expectedOutput.add(new Watermark(1L)); expectedOutput.add(new StreamRecord<>("INPUT1:17", 0L)); expectedOutput.add(new StreamRecord<>("INPUT1:13", 0L)); expectedOutput.add(new Watermark(2L)); expectedOutput.add(new StreamRecord<>("INPUT2:42", 1L)); expectedOutput.add(new StreamRecord<>("STATE:17", 6L)); expectedOutput.add(new Watermark(6L)); expectedOutput.add(new StreamRecord<>("STATE:42", 7L)); expectedOutput.add(new Watermark(7L)); TestHarnessUtil.assertOutputEquals("Output was not correct.", expectedOutput, testHarness.getOutput()); testHarness.close(); } /** * Verifies that we don't have leakage between different keys. */ @Test public void testProcessingTimeTimerWithState() throws Exception { LegacyKeyedCoProcessOperator<String, Integer, String, String> operator = new LegacyKeyedCoProcessOperator<>(new ProcessingTimeTriggeringStatefulProcessFunction()); TwoInputStreamOperatorTestHarness<Integer, String, String> testHarness = new KeyedTwoInputStreamOperatorTestHarness<>( operator, new IntToStringKeySelector<>(), new IdentityKeySelector<String>(), BasicTypeInfo.STRING_TYPE_INFO); testHarness.setup(); testHarness.open(); testHarness.setProcessingTime(1); testHarness.processElement1(new StreamRecord<>(17)); // should set timer for 6 testHarness.processElement1(new StreamRecord<>(13)); // should set timer for 6 testHarness.setProcessingTime(2); testHarness.processElement1(new StreamRecord<>(13)); // should delete timer again testHarness.processElement2(new StreamRecord<>("42")); // should set timer for 7 testHarness.setProcessingTime(6); testHarness.setProcessingTime(7); ConcurrentLinkedQueue<Object> expectedOutput = new ConcurrentLinkedQueue<>(); expectedOutput.add(new StreamRecord<>("INPUT1:17")); expectedOutput.add(new StreamRecord<>("INPUT1:13")); expectedOutput.add(new StreamRecord<>("INPUT2:42")); expectedOutput.add(new StreamRecord<>("STATE:17")); expectedOutput.add(new StreamRecord<>("STATE:42")); TestHarnessUtil.assertOutputEquals("Output was not correct.", expectedOutput, testHarness.getOutput()); testHarness.close(); } @Test public void testSnapshotAndRestore() throws Exception { LegacyKeyedCoProcessOperator<String, Integer, String, String> operator = new LegacyKeyedCoProcessOperator<>(new BothTriggeringProcessFunction()); TwoInputStreamOperatorTestHarness<Integer, String, String> testHarness = new KeyedTwoInputStreamOperatorTestHarness<>( operator, new IntToStringKeySelector<>(), new IdentityKeySelector<String>(), BasicTypeInfo.STRING_TYPE_INFO); testHarness.setup(); testHarness.open(); testHarness.processElement1(new StreamRecord<>(5, 12L)); testHarness.processElement2(new StreamRecord<>("5", 12L)); // snapshot and restore from scratch OperatorSubtaskState snapshot = testHarness.snapshot(0, 0); testHarness.close(); operator = new LegacyKeyedCoProcessOperator<>(new BothTriggeringProcessFunction()); testHarness = new KeyedTwoInputStreamOperatorTestHarness<>( operator, new IntToStringKeySelector<>(), new IdentityKeySelector<String>(), BasicTypeInfo.STRING_TYPE_INFO); testHarness.setup(); testHarness.initializeState(snapshot); testHarness.open(); testHarness.setProcessingTime(5); testHarness.processWatermark1(new Watermark(6)); testHarness.processWatermark2(new Watermark(6)); ConcurrentLinkedQueue<Object> expectedOutput = new ConcurrentLinkedQueue<>(); expectedOutput.add(new StreamRecord<>("PROC:1777")); expectedOutput.add(new StreamRecord<>("EVENT:1777", 6L)); expectedOutput.add(new Watermark(6)); TestHarnessUtil.assertOutputEquals("Output was not correct.", expectedOutput, testHarness.getOutput()); testHarness.close(); } /** * A key selector which convert a integer key to string. * */ private static class IntToStringKeySelector<T> implements KeySelector<Integer, String> { private static final long serialVersionUID = 1L; @Override public String getKey(Integer value) throws Exception { return "" + value; } } /** * A identity key selector. */ private static class IdentityKeySelector<T> implements KeySelector<T, T> { private static final long serialVersionUID = 1L; @Override public T getKey(T value) throws Exception { return value; } } private static class WatermarkQueryingProcessFunction extends CoProcessFunction<Integer, String, String> { private static final long serialVersionUID = 1L; @Override public void processElement1(Integer value, Context ctx, Collector<String> out) throws Exception { out.collect(value + "WM:" + ctx.timerService().currentWatermark() + " TS:" + ctx.timestamp()); } @Override public void processElement2(String value, Context ctx, Collector<String> out) throws Exception { out.collect(value + "WM:" + ctx.timerService().currentWatermark() + " TS:" + ctx.timestamp()); } @Override public void onTimer( long timestamp, OnTimerContext ctx, Collector<String> out) throws Exception { } } private static class EventTimeTriggeringProcessFunction extends CoProcessFunction<Integer, String, String> { private static final long serialVersionUID = 1L; @Override public void processElement1(Integer value, Context ctx, Collector<String> out) throws Exception { out.collect("INPUT1:" + value); ctx.timerService().registerEventTimeTimer(5); } @Override public void processElement2(String value, Context ctx, Collector<String> out) throws Exception { out.collect("INPUT2:" + value); ctx.timerService().registerEventTimeTimer(6); } @Override public void onTimer( long timestamp, OnTimerContext ctx, Collector<String> out) throws Exception { assertEquals(TimeDomain.EVENT_TIME, ctx.timeDomain()); out.collect("" + 1777); } } private static class EventTimeTriggeringStatefulProcessFunction extends CoProcessFunction<Integer, String, String> { private static final long serialVersionUID = 1L; private final ValueStateDescriptor<String> state = new ValueStateDescriptor<>("seen-element", StringSerializer.INSTANCE); @Override public void processElement1(Integer value, Context ctx, Collector<String> out) throws Exception { handleValue(value, out, ctx.timerService(), 1); } @Override public void processElement2(String value, Context ctx, Collector<String> out) throws Exception { handleValue(value, out, ctx.timerService(), 2); } private void handleValue( Object value, Collector<String> out, TimerService timerService, int channel) throws IOException { final ValueState<String> state = getRuntimeContext().getState(this.state); if (state.value() == null) { out.collect("INPUT" + channel + ":" + value); state.update(String.valueOf(value)); timerService.registerEventTimeTimer(timerService.currentWatermark() + 5); } else { state.clear(); timerService.deleteEventTimeTimer(timerService.currentWatermark() + 4); } } @Override public void onTimer( long timestamp, OnTimerContext ctx, Collector<String> out) throws Exception { assertEquals(TimeDomain.EVENT_TIME, ctx.timeDomain()); out.collect("STATE:" + getRuntimeContext().getState(state).value()); } } private static class ProcessingTimeTriggeringProcessFunction extends CoProcessFunction<Integer, String, String> { private static final long serialVersionUID = 1L; @Override public void processElement1(Integer value, Context ctx, Collector<String> out) throws Exception { out.collect("INPUT1:" + value); ctx.timerService().registerProcessingTimeTimer(5); } @Override public void processElement2(String value, Context ctx, Collector<String> out) throws Exception { out.collect("INPUT2:" + value); ctx.timerService().registerProcessingTimeTimer(6); } @Override public void onTimer( long timestamp, OnTimerContext ctx, Collector<String> out) throws Exception { assertEquals(TimeDomain.PROCESSING_TIME, ctx.timeDomain()); out.collect("" + 1777); } } private static class ProcessingTimeQueryingProcessFunction extends CoProcessFunction<Integer, String, String> { private static final long serialVersionUID = 1L; @Override public void processElement1(Integer value, Context ctx, Collector<String> out) throws Exception { out.collect(value + "PT:" + ctx.timerService().currentProcessingTime() + " TS:" + ctx.timestamp()); } @Override public void processElement2(String value, Context ctx, Collector<String> out) throws Exception { out.collect(value + "PT:" + ctx.timerService().currentProcessingTime() + " TS:" + ctx.timestamp()); } @Override public void onTimer( long timestamp, OnTimerContext ctx, Collector<String> out) throws Exception { } } private static class ProcessingTimeTriggeringStatefulProcessFunction extends CoProcessFunction<Integer, String, String> { private static final long serialVersionUID = 1L; private final ValueStateDescriptor<String> state = new ValueStateDescriptor<>("seen-element", StringSerializer.INSTANCE); @Override public void processElement1(Integer value, Context ctx, Collector<String> out) throws Exception { handleValue(value, out, ctx.timerService(), 1); } @Override public void processElement2(String value, Context ctx, Collector<String> out) throws Exception { handleValue(value, out, ctx.timerService(), 2); } private void handleValue( Object value, Collector<String> out, TimerService timerService, int channel) throws IOException { final ValueState<String> state = getRuntimeContext().getState(this.state); if (state.value() == null) { out.collect("INPUT" + channel + ":" + value); state.update(String.valueOf(value)); timerService.registerProcessingTimeTimer(timerService.currentProcessingTime() + 5); } else { state.clear(); timerService.deleteProcessingTimeTimer(timerService.currentProcessingTime() + 4); } } @Override public void onTimer( long timestamp, OnTimerContext ctx, Collector<String> out) throws Exception { assertEquals(TimeDomain.PROCESSING_TIME, ctx.timeDomain()); out.collect("STATE:" + getRuntimeContext().getState(state).value()); } } private static class BothTriggeringProcessFunction extends CoProcessFunction<Integer, String, String> { private static final long serialVersionUID = 1L; @Override public void processElement1(Integer value, Context ctx, Collector<String> out) throws Exception { ctx.timerService().registerProcessingTimeTimer(3); ctx.timerService().registerEventTimeTimer(6); ctx.timerService().deleteProcessingTimeTimer(3); } @Override public void processElement2(String value, Context ctx, Collector<String> out) throws Exception { ctx.timerService().registerEventTimeTimer(4); ctx.timerService().registerProcessingTimeTimer(5); ctx.timerService().deleteEventTimeTimer(4); } @Override public void onTimer( long timestamp, OnTimerContext ctx, Collector<String> out) throws Exception { if (TimeDomain.EVENT_TIME.equals(ctx.timeDomain())) { out.collect("EVENT:1777"); } else { out.collect("PROC:1777"); } } } }