| /** |
| * 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.state.managed; |
| |
| import java.io.IOException; |
| import java.util.Set; |
| import java.util.concurrent.CountDownLatch; |
| |
| import org.joda.time.Duration; |
| 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.apex.malhar.lib.fileaccess.FileAccessFSImpl; |
| import org.apache.apex.malhar.lib.util.TestUtils; |
| |
| import com.google.common.collect.Sets; |
| |
| import com.datatorrent.api.Context; |
| import com.datatorrent.netlet.util.Slice; |
| |
| public class StateTrackerTest |
| { |
| static class TestMeta extends TestWatcher |
| { |
| MockManagedStateImpl managedState; |
| Context.OperatorContext operatorContext; |
| String applicationPath; |
| |
| @Override |
| protected void starting(Description description) |
| { |
| TestUtils.deleteTargetTestClassFolder(description); |
| managedState = new MockManagedStateImpl(); |
| applicationPath = "target/" + description.getClassName() + "/" + description.getMethodName(); |
| ((FileAccessFSImpl)managedState.getFileAccess()).setBasePath(applicationPath + "/" + "bucket_data"); |
| |
| managedState.setNumBuckets(2); |
| managedState.setMaxMemorySize(100); |
| |
| operatorContext = ManagedStateTestUtils.getOperatorContext(1, applicationPath); |
| } |
| |
| @Override |
| protected void finished(Description description) |
| { |
| TestUtils.deleteTargetTestClassFolder(description); |
| } |
| } |
| |
| @Rule |
| public TestMeta testMeta = new TestMeta(); |
| |
| @Test |
| public void testEviction() throws InterruptedException |
| { |
| testMeta.managedState.latch = new CountDownLatch(1); |
| testMeta.managedState.setup(testMeta.operatorContext); |
| |
| Slice one = ManagedStateTestUtils.getSliceFor("1"); |
| testMeta.managedState.beginWindow(System.currentTimeMillis()); |
| testMeta.managedState.put(1, one, one); |
| testMeta.managedState.endWindow(); |
| |
| testMeta.managedState.latch.await(); |
| testMeta.managedState.teardown(); |
| Assert.assertEquals("freed bucket", Sets.newHashSet(1L), testMeta.managedState.freedBuckets); |
| } |
| |
| @Test |
| public void testMultipleEvictions() throws InterruptedException |
| { |
| testMeta.managedState.latch = new CountDownLatch(2); |
| testMeta.managedState.setup(testMeta.operatorContext); |
| |
| Slice one = ManagedStateTestUtils.getSliceFor("1"); |
| testMeta.managedState.beginWindow(System.currentTimeMillis()); |
| testMeta.managedState.put(1, one, one); |
| |
| Slice two = ManagedStateTestUtils.getSliceFor("2"); |
| testMeta.managedState.put(2, two, two); |
| testMeta.managedState.endWindow(); |
| |
| testMeta.managedState.latch.await(); |
| testMeta.managedState.teardown(); |
| Assert.assertEquals("freed bucket", Sets.newHashSet(1L, 2L), testMeta.managedState.freedBuckets); |
| } |
| |
| @Test |
| public void testBucketPrevention() throws InterruptedException |
| { |
| testMeta.managedState.setDurationPreventingFreeingSpace(Duration.standardDays(2)); |
| testMeta.managedState.setStateTracker(new MockStateTracker()); |
| testMeta.managedState.latch = new CountDownLatch(1); |
| |
| testMeta.managedState.setup(testMeta.operatorContext); |
| Slice one = ManagedStateTestUtils.getSliceFor("1"); |
| testMeta.managedState.beginWindow(System.currentTimeMillis()); |
| testMeta.managedState.put(1, one, one); |
| |
| Slice two = ManagedStateTestUtils.getSliceFor("2"); |
| testMeta.managedState.put(2, two, two); |
| testMeta.managedState.endWindow(); |
| |
| testMeta.managedState.latch.await(); |
| testMeta.managedState.teardown(); |
| Assert.assertEquals("no buckets triggered", 0, testMeta.managedState.freedBuckets.size()); |
| } |
| |
| private static class MockManagedStateImpl extends ManagedStateImpl |
| { |
| CountDownLatch latch; |
| Set<Long> freedBuckets = Sets.newHashSet(); |
| |
| @Override |
| protected Bucket newBucket(long bucketId) |
| { |
| return new MockDefaultBucket(bucketId); |
| } |
| } |
| |
| private static class MockDefaultBucket extends Bucket.DefaultBucket |
| { |
| |
| protected MockDefaultBucket(long bucketId) |
| { |
| super(bucketId); |
| } |
| |
| @Override |
| public long freeMemory(long windowId) throws IOException |
| { |
| long freedBytes = super.freeMemory(windowId); |
| if (((MockManagedStateImpl)managedStateContext).freedBuckets.add(getBucketId())) { |
| ((MockManagedStateImpl)managedStateContext).latch.countDown(); |
| } |
| return freedBytes; |
| } |
| |
| @Override |
| public long getSizeInBytes() |
| { |
| return 600; |
| } |
| } |
| |
| private static class MockStateTracker extends StateTracker |
| { |
| |
| @Override |
| public void run() |
| { |
| super.run(); |
| ((MockManagedStateImpl)managedStateImpl).latch.countDown(); |
| } |
| } |
| |
| } |