| package org.apache.helix.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.Map; |
| |
| import org.apache.helix.HelixConstants; |
| import org.apache.helix.PropertyType; |
| import org.apache.helix.TestHelper; |
| import org.apache.helix.ZNRecord; |
| import org.apache.helix.integration.common.ZkStandAloneCMTestBase; |
| import org.apache.helix.manager.zk.ZkBaseDataAccessor; |
| import org.apache.helix.mock.MockZkHelixDataAccessor; |
| import org.apache.helix.model.CurrentState; |
| import org.apache.helix.tools.ClusterVerifiers.BestPossibleExternalViewVerifier; |
| import org.apache.helix.tools.ClusterVerifiers.ZkHelixClusterVerifier; |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| |
| public class TestRoutingDataCache extends ZkStandAloneCMTestBase { |
| |
| @Test() |
| public void testUpdateOnNotification() throws Exception { |
| MockZkHelixDataAccessor accessor = |
| new MockZkHelixDataAccessor(CLUSTER_NAME, new ZkBaseDataAccessor<ZNRecord>(_gZkClient)); |
| |
| RoutingDataCache cache = |
| new RoutingDataCache("CLUSTER_" + TestHelper.getTestClassName(), PropertyType.EXTERNALVIEW); |
| cache.refresh(accessor); |
| Assert.assertEquals(accessor.getReadCount(PropertyType.EXTERNALVIEW), 1); |
| |
| accessor.clearReadCounters(); |
| |
| // refresh again should read nothing |
| cache.refresh(accessor); |
| Assert.assertEquals(accessor.getReadCount(PropertyType.EXTERNALVIEW), 0); |
| |
| accessor.clearReadCounters(); |
| // refresh again should read nothing as ideal state is same |
| cache.notifyDataChange(HelixConstants.ChangeType.EXTERNAL_VIEW); |
| cache.refresh(accessor); |
| Assert.assertEquals(accessor.getReadCount(PropertyType.EXTERNALVIEW), 0); |
| } |
| |
| @Test(dependsOnMethods = { "testUpdateOnNotification" }) |
| public void testSelectiveUpdates() |
| throws Exception { |
| MockZkHelixDataAccessor accessor = |
| new MockZkHelixDataAccessor(CLUSTER_NAME, new ZkBaseDataAccessor<ZNRecord>(_gZkClient)); |
| |
| RoutingDataCache cache = |
| new RoutingDataCache("CLUSTER_" + TestHelper.getTestClassName(), PropertyType.EXTERNALVIEW); |
| cache.refresh(accessor); |
| Assert.assertEquals(accessor.getReadCount(PropertyType.EXTERNALVIEW), 1); |
| |
| accessor.clearReadCounters(); |
| |
| // refresh again should read nothing |
| cache.refresh(accessor); |
| Assert.assertEquals(accessor.getReadCount(PropertyType.EXTERNALVIEW), 0); |
| |
| // refresh again should read nothing |
| cache.notifyDataChange(HelixConstants.ChangeType.EXTERNAL_VIEW); |
| cache.refresh(accessor); |
| Assert.assertEquals(accessor.getReadCount(PropertyType.EXTERNALVIEW), 0); |
| |
| // add new resources |
| _gSetupTool.addResourceToCluster(CLUSTER_NAME, "TestDB_1", 1, STATE_MODEL); |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, "TestDB_1", _replica); |
| |
| Thread.sleep(100); |
| ZkHelixClusterVerifier _clusterVerifier = |
| new BestPossibleExternalViewVerifier.Builder(CLUSTER_NAME).setZkAddr(ZK_ADDR).build(); |
| Assert.assertTrue(_clusterVerifier.verifyByPolling()); |
| |
| accessor.clearReadCounters(); |
| |
| // refresh again should read only new current states and new idealstate |
| cache.notifyDataChange(HelixConstants.ChangeType.EXTERNAL_VIEW); |
| cache.refresh(accessor); |
| Assert.assertEquals(accessor.getReadCount(PropertyType.EXTERNALVIEW), 1); |
| |
| // Add more resources |
| accessor.clearReadCounters(); |
| |
| _gSetupTool.addResourceToCluster(CLUSTER_NAME, "TestDB_2", 1, STATE_MODEL); |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, "TestDB_2", _replica); |
| _gSetupTool.addResourceToCluster(CLUSTER_NAME, "TestDB_3", 1, STATE_MODEL); |
| _gSetupTool.rebalanceStorageCluster(CLUSTER_NAME, "TestDB_3", _replica); |
| |
| Thread.sleep(100); |
| Assert.assertTrue(_clusterVerifier.verifyByPolling()); |
| |
| // Totally four resources. Two of them are newly added. |
| cache.notifyDataChange(HelixConstants.ChangeType.EXTERNAL_VIEW); |
| cache.refresh(accessor); |
| Assert.assertEquals(accessor.getReadCount(PropertyType.EXTERNALVIEW), 2); |
| |
| // update one resource |
| accessor.clearReadCounters(); |
| |
| _gSetupTool.getClusterManagementTool().enableResource(CLUSTER_NAME, "TestDB_2", false); |
| |
| Thread.sleep(100); |
| Assert.assertTrue(_clusterVerifier.verifyByPolling()); |
| |
| cache.notifyDataChange(HelixConstants.ChangeType.EXTERNAL_VIEW); |
| cache.refresh(accessor); |
| Assert.assertEquals(accessor.getReadCount(PropertyType.EXTERNALVIEW), 1); |
| } |
| |
| @Test |
| public void testCurrentStatesSelectiveUpdate() { |
| String clusterName = "CLUSTER_" + TestHelper.getTestClassName(); |
| MockZkHelixDataAccessor accessor = |
| new MockZkHelixDataAccessor(CLUSTER_NAME, new ZkBaseDataAccessor<>(_gZkClient)); |
| RoutingDataCache cache = new RoutingDataCache(clusterName, PropertyType.CURRENTSTATES); |
| |
| // Empty current states map before refreshing. |
| Assert.assertTrue(cache.getCurrentStatesMap().isEmpty()); |
| |
| // 1. Initial cache refresh. |
| cache.refresh(accessor); |
| Map<String, Map<String, Map<String, CurrentState>>> currentStatesV1 = |
| cache.getCurrentStatesMap(); |
| |
| // Current states map is not empty and size equals to number of live instances. |
| Assert.assertFalse(currentStatesV1.isEmpty()); |
| Assert.assertEquals(currentStatesV1.size(), _participants.length); |
| |
| // 2. Without any change, refresh routing data cache. |
| cache.refresh(accessor); |
| // Because of no current states change, current states cache doesn't refresh. |
| Assert.assertEquals(cache.getCurrentStatesMap(), currentStatesV1); |
| |
| // 3. Stop one participant to make live instance change and refresh routing data cache. |
| _participants[0].syncStop(); |
| cache.notifyDataChange(HelixConstants.ChangeType.LIVE_INSTANCE); |
| cache.refresh(accessor); |
| Map<String, Map<String, Map<String, CurrentState>>> currentStatesV2 = |
| cache.getCurrentStatesMap(); |
| |
| // Current states cache should refresh and change. |
| Assert.assertFalse(currentStatesV2.isEmpty()); |
| Assert.assertEquals(currentStatesV2.size(), _participants.length - 1); |
| Assert.assertFalse(currentStatesV1.equals(currentStatesV2)); |
| |
| cache.refresh(accessor); |
| |
| // No change. |
| Assert.assertEquals(cache.getCurrentStatesMap(), currentStatesV2); |
| } |
| } |