| /** |
| * 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.apex.malhar.lib.bandwidth; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.ScheduledFuture; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| import org.junit.Assert; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TestWatcher; |
| import org.junit.runner.Description; |
| |
| import org.apache.commons.io.FileUtils; |
| |
| import com.datatorrent.api.Attribute; |
| import com.datatorrent.api.Context; |
| import com.datatorrent.api.DAG; |
| |
| import static org.apache.apex.malhar.lib.helper.OperatorContextTestHelper.mockOperatorContext; |
| |
| public class BandwidthManagerTest |
| { |
| private static class TestMeta extends TestWatcher |
| { |
| private static final long ONE_SECOND = 1000L; |
| private String applicationPath; |
| private BandwidthManager underTest; |
| private Context.OperatorContext context; |
| private long bandwidthLimit = 10L; |
| private ScheduledExecutorService mockschedular; |
| |
| @Override |
| protected void starting(Description description) |
| { |
| super.starting(description); |
| mockschedular = new ScheduledExecutorService() |
| { |
| private Runnable command; |
| |
| @Override |
| public void shutdown() |
| { |
| } |
| |
| @Override |
| public List<Runnable> shutdownNow() |
| { |
| return null; |
| } |
| |
| @Override |
| public boolean isShutdown() |
| { |
| return false; |
| } |
| |
| @Override |
| public boolean isTerminated() |
| { |
| return false; |
| } |
| |
| @Override |
| public boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException |
| { |
| return false; |
| } |
| |
| @Override |
| public <T> Future<T> submit(Callable<T> task) |
| { |
| return null; |
| } |
| |
| @Override |
| public <T> Future<T> submit(Runnable task, T result) |
| { |
| return null; |
| } |
| |
| @Override |
| public Future<?> submit(Runnable task) |
| { |
| return null; |
| } |
| |
| @Override |
| public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks) throws InterruptedException |
| { |
| return null; |
| } |
| |
| @Override |
| public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks, long timeout, TimeUnit unit) throws InterruptedException |
| { |
| return null; |
| } |
| |
| @Override |
| public <T> T invokeAny(Collection<? extends Callable<T>> tasks) throws InterruptedException, ExecutionException |
| { |
| return null; |
| } |
| |
| @Override |
| public <T> T invokeAny(Collection<? extends Callable<T>> tasks, long timeout, TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException |
| { |
| return null; |
| } |
| |
| @Override |
| public void execute(Runnable command) |
| { |
| this.command.run(); |
| } |
| |
| @Override |
| public ScheduledFuture<?> schedule(Runnable command, long delay, TimeUnit unit) |
| { |
| this.command = command; |
| return null; |
| } |
| |
| @Override |
| public <V> ScheduledFuture<V> schedule(Callable<V> callable, long delay, TimeUnit unit) |
| { |
| return null; |
| } |
| |
| @Override |
| public ScheduledFuture<?> scheduleAtFixedRate(Runnable command, long initialDelay, long period, TimeUnit unit) |
| { |
| this.command = command; |
| return null; |
| } |
| |
| @Override |
| public ScheduledFuture<?> scheduleWithFixedDelay(Runnable command, long initialDelay, long delay, TimeUnit unit) |
| { |
| this.command = command; |
| return null; |
| } |
| }; |
| underTest = new BandwidthManager(mockschedular); |
| underTest.setBandwidth(bandwidthLimit); |
| |
| applicationPath = "target/" + description.getClassName() + "/" + description.getMethodName(); |
| Attribute.AttributeMap.DefaultAttributeMap attributes = new Attribute.AttributeMap.DefaultAttributeMap(); |
| attributes.put(DAG.APPLICATION_PATH, applicationPath); |
| context = mockOperatorContext(1, attributes); |
| underTest.setup(context); |
| } |
| |
| @Override |
| protected void finished(Description description) |
| { |
| underTest.teardown(); |
| try { |
| FileUtils.deleteDirectory(new File("target/" + description.getClassName())); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |
| |
| @Rule |
| public TestMeta testMeta = new TestMeta(); |
| |
| @Test |
| public void testBandwidthForLargeBlocks() throws InterruptedException |
| { |
| String data = "Tuple: test data to be emitted."; |
| long timeCounter = 0; |
| testMeta.underTest.consumeBandwidth(data.length()); |
| while (!testMeta.underTest.canConsumeBandwidth()) { |
| timeCounter += TestMeta.ONE_SECOND; |
| testMeta.mockschedular.execute(null); // accumulate bandwidth |
| } |
| Assert.assertTrue(timeCounter > ((data.length() / testMeta.bandwidthLimit) * 1000)); |
| } |
| |
| @Test |
| public void testBandwidthForSmallBlocks() |
| { |
| String data = "Tuple"; |
| Assert.assertTrue(testMeta.underTest.canConsumeBandwidth()); |
| testMeta.underTest.consumeBandwidth(data.length()); |
| testMeta.mockschedular.execute(null); |
| Assert.assertTrue(testMeta.underTest.canConsumeBandwidth()); |
| testMeta.underTest.consumeBandwidth(data.length()); |
| Assert.assertTrue(testMeta.underTest.canConsumeBandwidth()); |
| testMeta.underTest.consumeBandwidth(data.length()); |
| Assert.assertFalse(testMeta.underTest.canConsumeBandwidth()); |
| } |
| |
| @Test |
| public void testBandwidthForMultipleBlocks() |
| { |
| int[] tupleSizes = {5, 2, 5, 4, 10, 25, 2}; |
| Assert.assertTrue(testMeta.underTest.canConsumeBandwidth()); |
| testMeta.underTest.consumeBandwidth(tupleSizes[0]); |
| testMeta.mockschedular.execute(null); |
| |
| Assert.assertTrue(testMeta.underTest.canConsumeBandwidth()); |
| testMeta.underTest.consumeBandwidth(tupleSizes[1]); |
| |
| Assert.assertTrue(testMeta.underTest.canConsumeBandwidth()); |
| testMeta.underTest.consumeBandwidth(tupleSizes[2]); |
| Assert.assertFalse(testMeta.underTest.canConsumeBandwidth()); |
| testMeta.mockschedular.execute(null); |
| |
| Assert.assertTrue(testMeta.underTest.canConsumeBandwidth()); |
| testMeta.underTest.consumeBandwidth(tupleSizes[3]); |
| |
| Assert.assertTrue(testMeta.underTest.canConsumeBandwidth()); |
| testMeta.underTest.consumeBandwidth(tupleSizes[4]); |
| Assert.assertFalse(testMeta.underTest.canConsumeBandwidth()); |
| testMeta.mockschedular.execute(null); |
| |
| Assert.assertTrue(testMeta.underTest.canConsumeBandwidth()); |
| testMeta.underTest.consumeBandwidth(tupleSizes[5]); |
| |
| Assert.assertFalse(testMeta.underTest.canConsumeBandwidth()); |
| testMeta.mockschedular.execute(null); |
| Assert.assertFalse(testMeta.underTest.canConsumeBandwidth()); |
| testMeta.mockschedular.execute(null); |
| Assert.assertFalse(testMeta.underTest.canConsumeBandwidth()); |
| testMeta.mockschedular.execute(null); |
| Assert.assertTrue(testMeta.underTest.canConsumeBandwidth()); |
| testMeta.underTest.consumeBandwidth(tupleSizes[6]); |
| |
| Assert.assertTrue(testMeta.underTest.canConsumeBandwidth()); |
| } |
| |
| @Test |
| public void testUnsetBandwidth() |
| { |
| testMeta.underTest.setBandwidth(Integer.MAX_VALUE); |
| Assert.assertTrue(testMeta.underTest.canConsumeBandwidth()); |
| } |
| } |
| |
| |