| package org.apache.helix.integration.spectator; |
| |
| /* |
| * 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.List; |
| import java.util.Set; |
| |
| import org.apache.helix.HelixManager; |
| import org.apache.helix.HelixManagerFactory; |
| import org.apache.helix.InstanceType; |
| import org.apache.helix.PropertyType; |
| import org.apache.helix.TestHelper; |
| import org.apache.helix.common.ZkTestBase; |
| import org.apache.helix.controller.rebalancer.strategy.CrushEdRebalanceStrategy; |
| import org.apache.helix.integration.manager.ClusterControllerManager; |
| import org.apache.helix.integration.manager.MockParticipantManager; |
| import org.apache.helix.model.IdealState; |
| import org.apache.helix.model.InstanceConfig; |
| import org.apache.helix.spectator.RoutingTableProvider; |
| import org.apache.helix.spectator.RoutingTableSnapshot; |
| import org.apache.helix.tools.ClusterVerifiers.BestPossibleExternalViewVerifier; |
| import org.apache.helix.tools.ClusterVerifiers.ZkHelixClusterVerifier; |
| import org.testng.Assert; |
| import org.testng.annotations.AfterClass; |
| import org.testng.annotations.BeforeClass; |
| import org.testng.annotations.Test; |
| |
| public class TestRoutingTableSnapshot extends ZkTestBase { |
| private HelixManager _manager; |
| private final int NUM_NODES = 10; |
| protected int NUM_PARTITIONS = 20; |
| protected int NUM_REPLICAS = 3; |
| private final int START_PORT = 12918; |
| private final String CLUSTER_NAME = CLUSTER_PREFIX + "_" + getShortClassName(); |
| private MockParticipantManager[] _participants; |
| private ClusterControllerManager _controller; |
| |
| @BeforeClass |
| public void beforeClass() throws Exception { |
| _participants = new MockParticipantManager[NUM_NODES]; |
| _gSetupTool.addCluster(CLUSTER_NAME, true); |
| |
| _participants = new MockParticipantManager[NUM_NODES]; |
| for (int i = 0; i < NUM_NODES; i++) { |
| String storageNodeName = PARTICIPANT_PREFIX + "_" + (START_PORT + i); |
| _gSetupTool.addInstanceToCluster(CLUSTER_NAME, storageNodeName); |
| } |
| |
| for (int i = 0; i < NUM_NODES; i++) { |
| String instanceName = PARTICIPANT_PREFIX + "_" + (START_PORT + i); |
| _participants[i] = new MockParticipantManager(ZK_ADDR, CLUSTER_NAME, instanceName); |
| _participants[i].syncStart(); |
| } |
| |
| _manager = HelixManagerFactory.getZKHelixManager(CLUSTER_NAME, "Admin", |
| InstanceType.ADMINISTRATOR, ZK_ADDR); |
| _manager.connect(); |
| |
| String controllerName = CONTROLLER_PREFIX + "_0"; |
| _controller = new ClusterControllerManager(ZK_ADDR, CLUSTER_NAME, controllerName); |
| _controller.syncStart(); |
| } |
| |
| @AfterClass |
| public void afterClass() throws Exception { |
| if (_manager != null && _manager.isConnected()) { |
| _manager.disconnect(); |
| } |
| for (int i = 0; i < NUM_NODES; i++) { |
| if (_participants[i] != null && _participants[i].isConnected()) { |
| _participants[i].reset(); |
| } |
| } |
| if (_controller != null && _controller.isConnected()) { |
| _controller.syncStop(); |
| } |
| deleteCluster(CLUSTER_NAME); |
| } |
| |
| @Test |
| public void testRoutingTableSnapshot() throws InterruptedException { |
| RoutingTableProvider routingTableProvider = |
| new RoutingTableProvider(_manager, PropertyType.EXTERNALVIEW); |
| |
| try { |
| String db1 = "TestDB-1"; |
| _gSetupTool.addResourceToCluster(CLUSTER_NAME, db1, NUM_PARTITIONS, "MasterSlave", |
| IdealState.RebalanceMode.FULL_AUTO.name(), CrushEdRebalanceStrategy.class.getName()); |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, db1, NUM_REPLICAS); |
| |
| ZkHelixClusterVerifier clusterVerifier = |
| new BestPossibleExternalViewVerifier.Builder(CLUSTER_NAME).setZkClient(_gZkClient) |
| .setWaitTillVerify(TestHelper.DEFAULT_REBALANCE_PROCESSING_WAIT_TIME) |
| .build(); |
| Assert.assertTrue(clusterVerifier.verifyByPolling()); |
| |
| IdealState idealState1 = |
| _gSetupTool.getClusterManagementTool().getResourceIdealState(CLUSTER_NAME, db1); |
| |
| RoutingTableSnapshot routingTableSnapshot = routingTableProvider.getRoutingTableSnapshot(); |
| validateMapping(idealState1, routingTableSnapshot); |
| |
| Assert.assertEquals(routingTableSnapshot.getInstanceConfigs().size(), NUM_NODES); |
| Assert.assertEquals(routingTableSnapshot.getResources().size(), 1); |
| Assert.assertEquals(routingTableSnapshot.getLiveInstances().size(), NUM_NODES); |
| Assert.assertEquals(routingTableSnapshot.getExternalViews().size(), 1); // 1 DB |
| |
| // add new DB and shutdown an instance |
| String db2 = "TestDB-2"; |
| _gSetupTool.addResourceToCluster(CLUSTER_NAME, db2, NUM_PARTITIONS, "MasterSlave", |
| IdealState.RebalanceMode.FULL_AUTO.name(), CrushEdRebalanceStrategy.class.getName()); |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, db2, NUM_REPLICAS); |
| |
| // shutdown an instance |
| _participants[0].syncStop(); |
| Assert.assertTrue(clusterVerifier.verifyByPolling()); |
| |
| // the original snapshot should not change |
| Assert.assertEquals(routingTableSnapshot.getInstanceConfigs().size(), NUM_NODES); |
| Assert.assertEquals(routingTableSnapshot.getResources().size(), 1); |
| Assert.assertEquals(routingTableSnapshot.getLiveInstances().size(), NUM_NODES); |
| |
| RoutingTableSnapshot newRoutingTableSnapshot = routingTableProvider.getRoutingTableSnapshot(); |
| |
| Assert.assertEquals(newRoutingTableSnapshot.getInstanceConfigs().size(), NUM_NODES); |
| Assert.assertEquals(newRoutingTableSnapshot.getResources().size(), 2); |
| Assert.assertEquals(newRoutingTableSnapshot.getLiveInstances().size(), NUM_NODES - 1); |
| Assert.assertEquals(newRoutingTableSnapshot.getExternalViews().size(), 2); // 2 DBs |
| } finally { |
| routingTableProvider.shutdown(); |
| } |
| } |
| |
| private void validateMapping(IdealState idealState, RoutingTableSnapshot routingTableSnapshot) { |
| String db = idealState.getResourceName(); |
| Set<String> partitions = idealState.getPartitionSet(); |
| for (String partition : partitions) { |
| List<InstanceConfig> masterInsEv = |
| routingTableSnapshot.getInstancesForResource(db, partition, "MASTER"); |
| Assert.assertEquals(masterInsEv.size(), 1); |
| |
| List<InstanceConfig> slaveInsEv = |
| routingTableSnapshot.getInstancesForResource(db, partition, "SLAVE"); |
| Assert.assertEquals(slaveInsEv.size(), 2); |
| } |
| } |
| } |