| package org.apache.helix.integration; |
| |
| /* |
| * 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.Arrays; |
| import java.util.List; |
| import org.apache.helix.ExternalViewChangeListener; |
| import org.apache.helix.HelixAdmin; |
| import org.apache.helix.NotificationContext; |
| import org.apache.helix.NotificationContext.Type; |
| import org.apache.helix.PropertyKey; |
| import org.apache.helix.TestHelper; |
| import org.apache.helix.ZNRecord; |
| import org.apache.helix.common.ZkTestBase; |
| import org.apache.helix.integration.manager.ClusterControllerManager; |
| import org.apache.helix.integration.manager.MockParticipantManager; |
| import org.apache.helix.manager.zk.ZKHelixAdmin; |
| import org.apache.helix.manager.zk.ZKHelixDataAccessor; |
| import org.apache.helix.model.ExternalView; |
| import org.apache.helix.model.IdealState; |
| import org.apache.helix.tools.ClusterVerifiers.BestPossibleExternalViewVerifier; |
| import org.apache.helix.tools.ClusterVerifiers.ZkHelixClusterVerifier; |
| import org.apache.helix.tools.DefaultIdealStateCalculator; |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| |
| public class TestBucketizedResource extends ZkTestBase { |
| |
| private void setupCluster(String clusterName, List<String> instanceNames, String dbName, |
| int replica, int partitions, int bucketSize) { |
| _gSetupTool.addCluster(clusterName, true); |
| _gSetupTool.addInstancesToCluster(clusterName, |
| instanceNames.toArray(new String[instanceNames.size()])); |
| |
| // add a bucketized resource |
| ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, _baseAccessor); |
| PropertyKey.Builder keyBuilder = accessor.keyBuilder(); |
| ZNRecord idealStateRec = |
| DefaultIdealStateCalculator.calculateIdealState(instanceNames, partitions, replica - 1, |
| dbName, |
| "MASTER", "SLAVE"); |
| IdealState idealState = new IdealState(idealStateRec); |
| idealState.setBucketSize(bucketSize); |
| idealState.setStateModelDefRef("MasterSlave"); |
| idealState.setRebalanceMode(IdealState.RebalanceMode.CUSTOMIZED); |
| idealState.setReplicas(Integer.toString(replica)); |
| accessor.setProperty(keyBuilder.idealStates(dbName), idealState); |
| |
| } |
| |
| @Test() |
| public void testBucketizedResource() { |
| // Logger.getRootLogger().setLevel(Level.INFO); |
| String className = TestHelper.getTestClassName(); |
| String methodName = TestHelper.getTestMethodName(); |
| String clusterName = className + "_" + methodName; |
| |
| List<String> instanceNames = |
| Arrays.asList("localhost_12918", "localhost_12919", "localhost_12920", "localhost_12921", "localhost_12922"); |
| int n = instanceNames.size(); |
| String dbName = "TestDB0"; |
| |
| MockParticipantManager[] participants = new MockParticipantManager[5]; |
| |
| setupCluster(clusterName, instanceNames, dbName, 3, 10, 1); |
| |
| ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, _baseAccessor); |
| |
| ClusterControllerManager controller = new ClusterControllerManager(ZK_ADDR, clusterName); |
| controller.syncStart(); |
| |
| // start participants |
| for (int i = 0; i < n; i++) { |
| participants[i] = new MockParticipantManager(ZK_ADDR, clusterName, instanceNames.get(i)); |
| participants[i].syncStart(); |
| } |
| PropertyKey evKey = accessor.keyBuilder().externalView(dbName); |
| |
| BestPossibleExternalViewVerifier _clusterVerifier = |
| new BestPossibleExternalViewVerifier.Builder(clusterName).setZkAddr(ZK_ADDR).build(); |
| Assert.assertTrue(_clusterVerifier.verifyByPolling()); |
| |
| ExternalView ev = accessor.getProperty(evKey); |
| int v1 = ev.getRecord().getVersion(); |
| // disable the participant |
| _gSetupTool.getClusterManagementTool().enableInstance(clusterName, |
| participants[0].getInstanceName(), false); |
| |
| // wait for change in EV |
| Assert.assertTrue(_clusterVerifier.verifyByPolling()); |
| |
| |
| // read the version in EV |
| ev = accessor.getProperty(evKey); |
| int v2 = ev.getRecord().getVersion(); |
| Assert.assertEquals(v2 > v1, true); |
| |
| // clean up |
| controller.syncStop(); |
| for (int i = 0; i < n; i++) { |
| participants[i].syncStop(); |
| } |
| deleteCluster(clusterName); |
| } |
| |
| @Test |
| public void testBounceDisableAndDrop() throws Exception { |
| String className = TestHelper.getTestClassName(); |
| String methodName = TestHelper.getTestMethodName(); |
| String clusterName = className + "_" + methodName; |
| String dbName = "TestDB0"; |
| List<String> instanceNames = |
| Arrays.asList("localhost_0", "localhost_1", "localhost_2", "localhost_3", "localhost_4"); |
| int n = instanceNames.size(); |
| |
| ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, _baseAccessor); |
| PropertyKey.Builder keyBuilder = accessor.keyBuilder(); |
| |
| setupCluster(clusterName, instanceNames, dbName, 3, 10, 2); |
| |
| // start controller |
| ClusterControllerManager controller = new ClusterControllerManager(ZK_ADDR, clusterName); |
| controller.syncStart(); |
| |
| // start participants |
| MockParticipantManager[] participants = new MockParticipantManager[n]; |
| for (int i = 0; i < n; i++) { |
| participants[i] = new MockParticipantManager(ZK_ADDR, clusterName, instanceNames.get(i)); |
| participants[i].syncStart(); |
| } |
| |
| ZkHelixClusterVerifier _clusterVerifier = |
| new BestPossibleExternalViewVerifier.Builder(clusterName).setZkAddr(ZK_ADDR).build(); |
| Assert.assertTrue(_clusterVerifier.verifyByPolling()); |
| |
| // bounce |
| participants[0].syncStop(); |
| participants[0] = new MockParticipantManager(ZK_ADDR, clusterName, instanceNames.get(0)); |
| participants[0].syncStart(); |
| |
| Assert.assertTrue(_clusterVerifier.verifyByPolling()); |
| |
| // make sure participants[0]'s current state is bucketzied correctly during carryover |
| String path = |
| keyBuilder.currentState(instanceNames.get(0), participants[0].getSessionId(), dbName) |
| .getPath(); |
| ZNRecord record = _baseAccessor.get(path, null, 0); |
| Assert.assertTrue(record.getMapFields().size() == 0); |
| |
| // disable the bucketize resource |
| HelixAdmin admin = new ZKHelixAdmin(_gZkClient); |
| admin.enableResource(clusterName, dbName, false); |
| |
| Assert.assertTrue(_clusterVerifier.verifyByPolling()); |
| |
| // drop the bucketize resource |
| _gSetupTool.dropResourceFromCluster(clusterName, dbName); |
| |
| Assert.assertTrue(_clusterVerifier.verifyByPolling()); |
| |
| // make sure external-view is cleaned up |
| final String evPath = keyBuilder.externalView(dbName).getPath(); |
| |
| TestHelper.verify(new TestHelper.Verifier() { |
| @Override |
| public boolean verify() { |
| return !_baseAccessor.exists(evPath, 0); |
| } |
| }, 3000); |
| |
| boolean result = _baseAccessor.exists(evPath, 0); |
| Assert.assertFalse(result); |
| |
| // clean up |
| controller.syncStop(); |
| for (MockParticipantManager participant : participants) { |
| participant.syncStop(); |
| } |
| deleteCluster(clusterName); |
| } |
| |
| class TestExternalViewListener implements ExternalViewChangeListener { |
| int cbCnt = 0; |
| |
| @Override |
| public void onExternalViewChange(List<ExternalView> externalViewList, |
| NotificationContext changeContext) { |
| if (changeContext.getType() == Type.CALLBACK) { |
| cbCnt++; |
| } |
| } |
| } |
| |
| @Test |
| public void testListenerOnBucketizedResource() throws Exception { |
| String className = TestHelper.getTestClassName(); |
| String methodName = TestHelper.getTestMethodName(); |
| String clusterName = className + "_" + methodName; |
| String dbName = "TestDB0"; |
| List<String> instanceNames = |
| Arrays.asList("localhost_0", "localhost_1", "localhost_2", "localhost_3", "localhost_4"); |
| int n = instanceNames.size(); |
| |
| ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, _baseAccessor); |
| PropertyKey.Builder keyBuilder = accessor.keyBuilder(); |
| |
| setupCluster(clusterName, instanceNames, dbName, 3, 10, 2); |
| |
| // start controller |
| ClusterControllerManager controller = new ClusterControllerManager(ZK_ADDR, clusterName); |
| controller.syncStart(); |
| |
| // start participants |
| MockParticipantManager[] participants = new MockParticipantManager[n]; |
| for (int i = 0; i < n; i++) { |
| participants[i] = new MockParticipantManager(ZK_ADDR, clusterName, instanceNames.get(i)); |
| participants[i].syncStart(); |
| } |
| |
| ZkHelixClusterVerifier _clusterVerifier = |
| new BestPossibleExternalViewVerifier.Builder(clusterName).setZkAddr(ZK_ADDR).build(); |
| Assert.assertTrue(_clusterVerifier.verifyByPolling()); |
| |
| // add an external view listener |
| final TestExternalViewListener listener = new TestExternalViewListener(); |
| controller.addExternalViewChangeListener(listener); |
| |
| // remove "TestDB0" |
| _gSetupTool.dropResourceFromCluster(clusterName, dbName); |
| Assert.assertTrue(_clusterVerifier.verifyByPolling()); |
| |
| // wait callback to finish |
| TestHelper.verify(new TestHelper.Verifier() { |
| @Override public boolean verify() throws Exception { |
| return listener.cbCnt > 0; |
| } |
| }, 20000); |
| Assert.assertTrue(listener.cbCnt > 0); |
| |
| listener.cbCnt = 0; |
| |
| // add a new db |
| String newDbName = "TestDB1"; |
| int r = 3; |
| ZNRecord idealStateRec = |
| DefaultIdealStateCalculator.calculateIdealState(instanceNames, 10, r - 1, newDbName, |
| "MASTER", "SLAVE"); |
| IdealState idealState = new IdealState(idealStateRec); |
| idealState.setBucketSize(2); |
| idealState.setStateModelDefRef("MasterSlave"); |
| idealState.setRebalanceMode(IdealState.RebalanceMode.CUSTOMIZED); |
| idealState.setReplicas(Integer.toString(r)); |
| accessor.setProperty(keyBuilder.idealStates(newDbName), idealState); |
| |
| Assert.assertTrue(_clusterVerifier.verifyByPolling()); |
| |
| TestHelper.verify(new TestHelper.Verifier() { |
| @Override public boolean verify() throws Exception { |
| return listener.cbCnt > 0; |
| } |
| }, 20000); |
| |
| Assert.assertTrue(listener.cbCnt > 0); |
| |
| // clean up |
| controller.syncStop(); |
| for (MockParticipantManager participant : participants) { |
| participant.syncStop(); |
| } |
| deleteCluster(clusterName); |
| } |
| } |