| package org.apache.helix.integration.manager; |
| |
| /* |
| * 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 org.apache.helix.HelixManager; |
| import org.apache.helix.InstanceType; |
| import org.apache.helix.PropertyKey; |
| import org.apache.helix.TestHelper; |
| import org.apache.helix.ZkTestHelper; |
| import org.apache.helix.common.ZkTestBase; |
| import org.apache.helix.manager.zk.CallbackHandler; |
| import org.apache.helix.manager.zk.ZKHelixDataAccessor; |
| import org.apache.helix.manager.zk.ZKHelixManager; |
| import org.apache.helix.manager.zk.ZkBaseDataAccessor; |
| import org.apache.helix.mock.participant.MockMSModelFactory; |
| import org.apache.helix.model.LiveInstance; |
| import org.apache.helix.tools.ClusterStateVerifier; |
| import org.apache.helix.tools.ClusterStateVerifier.BestPossAndExtViewZkVerifier; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| |
| public class TestDistributedControllerManager extends ZkTestBase { |
| private static Logger LOG = LoggerFactory.getLogger(TestDistributedControllerManager.class); |
| |
| @Test |
| public void simpleIntegrationTest() throws Exception { |
| String className = TestHelper.getTestClassName(); |
| String methodName = TestHelper.getTestMethodName(); |
| String clusterName = className + "_" + methodName; |
| int n = 2; |
| |
| System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis())); |
| |
| TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, // participant port |
| "localhost", // participant name prefix |
| "TestDB", // resource name prefix |
| 1, // resources |
| 4, // partitions per resource |
| n, // number of nodes |
| 2, // replicas |
| "MasterSlave", true); // do rebalance |
| |
| HelixManager[] distributedControllers = new HelixManager[n]; |
| for (int i = 0; i < n; i++) { |
| int port = 12918 + i; |
| distributedControllers[i] = new ZKHelixManager(clusterName, "localhost_" + port, |
| InstanceType.CONTROLLER_PARTICIPANT, ZK_ADDR); |
| distributedControllers[i].getStateMachineEngine().registerStateModelFactory("MasterSlave", |
| new MockMSModelFactory()); |
| distributedControllers[i].connect(); |
| } |
| |
| boolean result = ClusterStateVerifier |
| .verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName)); |
| Assert.assertTrue(result); |
| |
| // disconnect first distributed-controller, and verify second takes leadership |
| distributedControllers[0].disconnect(); |
| |
| // verify leader changes to localhost_12919 |
| Thread.sleep(100); |
| result = ClusterStateVerifier |
| .verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName)); |
| Assert.assertTrue(result); |
| |
| ZKHelixDataAccessor accessor = |
| new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<>(_gZkClient)); |
| PropertyKey.Builder keyBuilder = accessor.keyBuilder(); |
| Assert.assertNull(accessor.getProperty(keyBuilder.liveInstance("localhost_12918"))); |
| LiveInstance leader = accessor.getProperty(keyBuilder.controllerLeader()); |
| Assert.assertNotNull(leader); |
| Assert.assertEquals(leader.getId(), "localhost_12919"); |
| |
| // clean up |
| distributedControllers[1].disconnect(); |
| Assert.assertNull(accessor.getProperty(keyBuilder.liveInstance("localhost_12919"))); |
| Assert.assertNull(accessor.getProperty(keyBuilder.controllerLeader())); |
| |
| deleteCluster(clusterName); |
| System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis())); |
| } |
| |
| /** |
| * expire a controller and make sure the other takes the leadership |
| * @param expireController |
| * @param newController |
| * @throws Exception |
| */ |
| private void expireController(ClusterDistributedController expireController, |
| ClusterDistributedController newController) throws Exception { |
| String clusterName = expireController.getClusterName(); |
| LOG.info("Expiring distributedController: " + expireController.getInstanceName() + ", session: " |
| + expireController.getSessionId() + " ..."); |
| String oldSessionId = expireController.getSessionId(); |
| |
| ZkTestHelper.expireSession(expireController.getZkClient()); |
| String newSessionId = expireController.getSessionId(); |
| LOG.debug("Expired distributedController: " + expireController.getInstanceName() |
| + ", oldSessionId: " + oldSessionId + ", newSessionId: " + newSessionId); |
| |
| boolean result = ClusterStateVerifier.verifyByPolling( |
| new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName)); |
| Assert.assertTrue(result); |
| |
| // verify leader changes to localhost_12919 |
| ZKHelixDataAccessor accessor = |
| new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<>(_gZkClient)); |
| PropertyKey.Builder keyBuilder = accessor.keyBuilder(); |
| Assert.assertNotNull( |
| accessor.getProperty(keyBuilder.liveInstance(expireController.getInstanceName()))); |
| LiveInstance leader = accessor.getProperty(keyBuilder.controllerLeader()); |
| Assert.assertNotNull(leader); |
| Assert.assertEquals(leader.getId(), newController.getInstanceName()); |
| |
| // check expired-controller has 2 handlers: message and data-accessor |
| LOG.debug(expireController.getInstanceName() + " handlers: " |
| + TestHelper.printHandlers(expireController)); |
| |
| List<CallbackHandler> handlers = expireController.getHandlers(); |
| Assert.assertEquals(handlers.size(), 1, |
| "Distributed controller should have 1 handler (message) after lose leadership, but was " |
| + handlers.size()); |
| } |
| |
| @Test |
| public void simpleSessionExpiryTest() throws Exception { |
| String className = TestHelper.getTestClassName(); |
| String methodName = TestHelper.getTestMethodName(); |
| String clusterName = className + "_" + methodName; |
| int n = 2; |
| |
| System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis())); |
| |
| TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, // participant port |
| "localhost", // participant name prefix |
| "TestDB", // resource name prefix |
| 1, // resources |
| 4, // partitions per resource |
| n, // number of nodes |
| 2, // replicas |
| "MasterSlave", true); // do rebalance |
| |
| ClusterDistributedController[] distributedControllers = new ClusterDistributedController[n]; |
| |
| for (int i = 0; i < n; i++) { |
| String contrllerName = "localhost_" + (12918 + i); |
| distributedControllers[i] = |
| new ClusterDistributedController(ZK_ADDR, clusterName, contrllerName); |
| distributedControllers[i].getStateMachineEngine().registerStateModelFactory("MasterSlave", |
| new MockMSModelFactory()); |
| distributedControllers[i].connect(); |
| } |
| |
| boolean result = ClusterStateVerifier |
| .verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName)); |
| Assert.assertTrue(result); |
| |
| // expire localhost_12918 |
| expireController(distributedControllers[0], distributedControllers[1]); |
| |
| // expire localhost_12919 |
| expireController(distributedControllers[1], distributedControllers[0]); |
| |
| // clean up |
| ZKHelixDataAccessor accessor = |
| new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<>(_gZkClient)); |
| PropertyKey.Builder keyBuilder = accessor.keyBuilder(); |
| |
| for (int i = 0; i < n; i++) { |
| distributedControllers[i].disconnect(); |
| Assert.assertNull(accessor |
| .getProperty(keyBuilder.liveInstance(distributedControllers[i].getInstanceName()))); |
| } |
| Assert.assertNull(accessor.getProperty(keyBuilder.controllerLeader())); |
| |
| deleteCluster(clusterName); |
| System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis())); |
| } |
| } |