| package org.apache.helix; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.util.Date; |
| import java.util.List; |
| import java.util.Random; |
| |
| import org.apache.helix.PropertyKey.Builder; |
| import org.apache.helix.api.listeners.BatchMode; |
| import org.apache.helix.model.IdealState; |
| import org.apache.helix.model.InstanceConfig; |
| import org.testng.Assert; |
| import org.testng.annotations.AfterClass; |
| import org.testng.annotations.BeforeClass; |
| import org.testng.annotations.Test; |
| |
| public class TestListenerCallbackBatchMode extends ZkUnitTestBase { |
| |
| class Listener implements InstanceConfigChangeListener, IdealStateChangeListener { |
| int _idealStateChangedCount = 0; |
| int _instanceConfigChangedCount = 0; |
| |
| @Override |
| public void onIdealStateChange(List<IdealState> idealState, NotificationContext changeContext) { |
| if (changeContext.getType().equals(NotificationContext.Type.CALLBACK)) { |
| _idealStateChangedCount++; |
| try { |
| Thread.sleep(200); |
| } catch (InterruptedException e) { |
| e.printStackTrace(); |
| } |
| } |
| } |
| |
| @Override |
| public void onInstanceConfigChange(List<InstanceConfig> instanceConfigs, |
| NotificationContext context) { |
| if (context.getType().equals(NotificationContext.Type.CALLBACK)) { |
| _instanceConfigChangedCount++; |
| try { |
| Thread.sleep(200); |
| } catch (InterruptedException e) { |
| e.printStackTrace(); |
| } |
| } |
| } |
| |
| public void reset() { |
| _idealStateChangedCount = 0; |
| _instanceConfigChangedCount = 0; |
| } |
| } |
| |
| @BatchMode |
| class BatchedListener extends Listener { |
| } |
| |
| |
| class MixedListener extends Listener { |
| @BatchMode |
| @Override |
| public void onIdealStateChange(List<IdealState> idealState, NotificationContext changeContext) { |
| super.onIdealStateChange(idealState, changeContext); |
| } |
| } |
| |
| @BatchMode (enabled = false) |
| class BatchDisableddListener extends Listener { |
| @Override |
| public void onIdealStateChange(List<IdealState> idealState, NotificationContext changeContext) { |
| super.onIdealStateChange(idealState, changeContext); |
| } |
| } |
| |
| |
| private HelixManager _manager; |
| private int _numNode = 8; |
| private int _numResource = 8; |
| |
| String clusterName = TestHelper.getTestClassName(); |
| |
| @BeforeClass |
| public void beforeClass() |
| throws Exception { |
| TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, // participant port |
| "localhost", // participant name prefix |
| "TestDB", // resource name prefix |
| _numResource, // resources |
| 4, // partitions per resource |
| _numNode, // number of nodes |
| 1, // replicas |
| "MasterSlave", true); // do rebalance |
| |
| _manager = |
| HelixManagerFactory.getZKHelixManager(clusterName, "localhost", InstanceType.SPECTATOR, |
| ZK_ADDR); |
| |
| _manager.connect(); |
| } |
| |
| @AfterClass |
| public void afterClass() |
| throws Exception { |
| _manager.disconnect(); |
| deleteCluster(clusterName); |
| } |
| |
| |
| @Test |
| public void testNonBatchedListener() throws Exception { |
| String methodName = TestHelper.getTestMethodName(); |
| System.out.println("START " + methodName + " at " + new Date(System.currentTimeMillis())); |
| |
| final Listener listener = new Listener(); |
| addListeners(listener); |
| updateConfigs(); |
| verifyNonbatchedListeners(listener); |
| removeListeners(listener); |
| |
| System.out.println("END " + methodName + " at " + new Date(System.currentTimeMillis())); |
| } |
| |
| @Test (dependsOnMethods = {"testNonBatchedListener", "testBatchedListener", "testMixedListener"}) |
| public void testEnableBatchedListenerByJavaProperty() throws Exception { |
| String methodName = TestHelper.getTestMethodName(); |
| System.out.println("START " + methodName + " at " + new Date(System.currentTimeMillis())); |
| |
| System.setProperty("isAsyncBatchModeEnabled", "true"); |
| |
| Listener listener = new Listener(); |
| addListeners(listener); |
| updateConfigs(); |
| verifyBatchedListeners(listener); |
| |
| System.setProperty("isAsyncBatchModeEnabled", "false"); |
| removeListeners(listener); |
| |
| System.setProperty("helix.callbackhandler.isAsyncBatchModeEnabled", "true"); |
| |
| listener = new Listener(); |
| addListeners(listener); |
| updateConfigs(); |
| verifyBatchedListeners(listener); |
| |
| System.setProperty("helix.callbackhandler.isAsyncBatchModeEnabled", "false"); |
| removeListeners(listener); |
| |
| System.out.println("END " + methodName + " at " + new Date(System.currentTimeMillis())); |
| } |
| |
| @Test (dependsOnMethods = {"testNonBatchedListener", "testBatchedListener", "testMixedListener"}) |
| public void testDisableBatchedListenerByAnnotation() throws Exception { |
| String methodName = TestHelper.getTestMethodName(); |
| System.out.println("START " + methodName + " at " + new Date(System.currentTimeMillis())); |
| |
| System.setProperty("isAsyncBatchModeEnabled", "true"); |
| |
| final Listener listener = new BatchDisableddListener(); |
| addListeners(listener); |
| updateConfigs(); |
| verifyNonbatchedListeners(listener); |
| |
| System.setProperty("isAsyncBatchModeEnabled", "false"); |
| removeListeners(listener); |
| |
| System.out.println("END " + methodName + " at " + new Date(System.currentTimeMillis())); |
| } |
| |
| @Test |
| public void testBatchedListener() throws Exception { |
| String methodName = TestHelper.getTestMethodName(); |
| System.out.println("START " + methodName + " at " + new Date(System.currentTimeMillis())); |
| |
| final BatchedListener batchListener = new BatchedListener(); |
| addListeners(batchListener); |
| updateConfigs(); |
| verifyBatchedListeners(batchListener); |
| removeListeners(batchListener); |
| |
| System.out.println("END " + methodName + " at " + new Date(System.currentTimeMillis())); |
| } |
| |
| @Test |
| public void testMixedListener() throws Exception { |
| String methodName = TestHelper.getTestMethodName(); |
| System.out.println("START " + methodName + " at " + new Date(System.currentTimeMillis())); |
| |
| final MixedListener mixedListener = new MixedListener(); |
| addListeners(mixedListener); |
| updateConfigs(); |
| |
| Thread.sleep(4000); |
| boolean result = (mixedListener._instanceConfigChangedCount == _numNode) && ( |
| mixedListener._idealStateChangedCount < _numResource/2); |
| |
| Assert.assertTrue(result, "instance callbacks: " + mixedListener._instanceConfigChangedCount |
| + ", idealstate callbacks " + mixedListener._idealStateChangedCount + "\ninstance count: " |
| + _numNode + ", idealstate counts: " + _numResource); |
| |
| removeListeners(mixedListener); |
| |
| System.out.println("END " + methodName + " at " + new Date(System.currentTimeMillis())); |
| } |
| |
| private void verifyNonbatchedListeners(final Listener listener) throws Exception { |
| Boolean result = TestHelper.verify(new TestHelper.Verifier() { |
| @Override public boolean verify() { |
| return (listener._instanceConfigChangedCount == _numNode) && ( |
| listener._idealStateChangedCount == _numResource); |
| } |
| }, 12000); |
| |
| Thread.sleep(50); |
| Assert.assertTrue(result, |
| "instance callbacks: " + listener._instanceConfigChangedCount + ", idealstate callbacks " |
| + listener._idealStateChangedCount + "\ninstance count: " + _numNode + ", idealstate counts: " + _numResource); |
| } |
| |
| private void verifyBatchedListeners(Listener batchListener) throws InterruptedException { |
| Thread.sleep(3000); |
| boolean result = (batchListener._instanceConfigChangedCount < _numNode) && ( |
| batchListener._idealStateChangedCount < _numResource); |
| |
| Assert.assertTrue(result, "instance callbacks: " + batchListener._instanceConfigChangedCount |
| + ", idealstate callbacks " + batchListener._idealStateChangedCount + "\ninstance count: " |
| + _numNode + ", idealstate counts: " + _numResource); |
| |
| } |
| |
| private void addListeners(Listener listener) throws Exception { |
| _manager.addInstanceConfigChangeListener(listener); |
| _manager.addIdealStateChangeListener(listener); |
| } |
| |
| private void removeListeners(Listener listener) throws Exception { |
| _manager.removeListener(new PropertyKey.Builder(_manager.getClusterName()).instanceConfigs(), |
| listener); |
| _manager |
| .removeListener(new PropertyKey.Builder(_manager.getClusterName()).idealStates(), listener); |
| } |
| |
| private void updateConfigs() throws InterruptedException { |
| final Random r = new Random(System.currentTimeMillis()); |
| // test change content |
| HelixDataAccessor accessor = _manager.getHelixDataAccessor(); |
| Builder keyBuilder = accessor.keyBuilder(); |
| final List<String> instances = accessor.getChildNames(keyBuilder.instanceConfigs()); |
| for (String instance : instances) { |
| InstanceConfig value = accessor.getProperty(keyBuilder.instanceConfig(instance)); |
| value._record.setLongField("TimeStamp", System.currentTimeMillis()); |
| accessor.setProperty(keyBuilder.instanceConfig(instance), value); |
| Thread.sleep(50); |
| } |
| |
| final List<String> resources = accessor.getChildNames(keyBuilder.idealStates()); |
| for (String resource : resources) { |
| IdealState idealState = accessor.getProperty(keyBuilder.idealStates(resource)); |
| idealState.setNumPartitions(r.nextInt(100)); |
| accessor.setProperty(keyBuilder.idealStates(idealState.getId()), idealState); |
| Thread.sleep(20); // wait zk callback |
| } |
| } |
| } |