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* Licensed to the Apache Software Foundation (ASF) under one
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* 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,
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* See the License for the specific language governing permissions and
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package org.apache.beam.runners.core.triggers;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import org.apache.beam.runners.core.triggers.TriggerStateMachineTester.SimpleTriggerStateMachineTester;
import org.apache.beam.sdk.transforms.windowing.FixedWindows;
import org.apache.beam.sdk.transforms.windowing.IntervalWindow;
import org.apache.beam.sdk.transforms.windowing.Sessions;
import org.joda.time.Duration;
import org.joda.time.Instant;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Tests the {@link AfterSynchronizedProcessingTimeStateMachine}.
*/
@RunWith(JUnit4.class)
public class AfterSynchronizedProcessingTimeStateMachineTest {
private TriggerStateMachine underTest =
AfterSynchronizedProcessingTimeStateMachine.ofFirstElement();
@Test
public void testAfterProcessingTimeWithFixedWindows() throws Exception {
Duration windowDuration = Duration.millis(10);
SimpleTriggerStateMachineTester<IntervalWindow> tester = TriggerStateMachineTester.forTrigger(
AfterProcessingTimeStateMachine
.pastFirstElementInPane()
.plusDelayOf(Duration.millis(5)),
FixedWindows.of(windowDuration));
tester.advanceProcessingTime(new Instant(10));
// Timer at 15
tester.injectElements(1);
IntervalWindow firstWindow = new IntervalWindow(new Instant(0), new Instant(10));
tester.advanceProcessingTime(new Instant(12));
assertFalse(tester.shouldFire(firstWindow));
// Load up elements in the next window, timer at 17 for them
tester.injectElements(11, 12, 13);
IntervalWindow secondWindow = new IntervalWindow(new Instant(10), new Instant(20));
assertFalse(tester.shouldFire(secondWindow));
// Not quite time to fire
tester.advanceProcessingTime(new Instant(14));
assertFalse(tester.shouldFire(firstWindow));
assertFalse(tester.shouldFire(secondWindow));
// Timer at 19 for these in the first window; it should be ignored since the 15 will fire first
tester.injectElements(2, 3);
// Advance past the first timer and fire, finishing the first window
tester.advanceProcessingTime(new Instant(16));
assertTrue(tester.shouldFire(firstWindow));
assertFalse(tester.shouldFire(secondWindow));
tester.fireIfShouldFire(firstWindow);
assertTrue(tester.isMarkedFinished(firstWindow));
// The next window fires and finishes now
tester.advanceProcessingTime(new Instant(18));
assertTrue(tester.shouldFire(secondWindow));
tester.fireIfShouldFire(secondWindow);
assertTrue(tester.isMarkedFinished(secondWindow));
}
@Test
public void testAfterProcessingTimeWithMergingWindow() throws Exception {
Duration windowDuration = Duration.millis(10);
SimpleTriggerStateMachineTester<IntervalWindow> tester = TriggerStateMachineTester.forTrigger(
AfterProcessingTimeStateMachine
.pastFirstElementInPane()
.plusDelayOf(Duration.millis(5)),
Sessions.withGapDuration(windowDuration));
tester.advanceProcessingTime(new Instant(10));
tester.injectElements(1); // in [1, 11), timer for 15
IntervalWindow firstWindow = new IntervalWindow(new Instant(1), new Instant(11));
assertFalse(tester.shouldFire(firstWindow));
tester.advanceProcessingTime(new Instant(12));
tester.injectElements(3); // in [3, 13), timer for 17
IntervalWindow secondWindow = new IntervalWindow(new Instant(3), new Instant(13));
assertFalse(tester.shouldFire(secondWindow));
tester.mergeWindows();
IntervalWindow mergedWindow = new IntervalWindow(new Instant(1), new Instant(13));
tester.advanceProcessingTime(new Instant(16));
assertTrue(tester.shouldFire(mergedWindow));
}
}