package org.apache.helix.integration;
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* 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.
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import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.helix.PropertyKey.Builder;
import org.apache.helix.TestHelper;
import org.apache.helix.ZNRecord;
import org.apache.helix.api.id.StateModelDefId;
import org.apache.helix.controller.strategy.DefaultTwoStateStrategy;
import org.apache.helix.manager.zk.MockParticipant;
import org.apache.helix.manager.zk.MockController;
import org.apache.helix.manager.zk.ZKHelixDataAccessor;
import org.apache.helix.model.IdealState;
import org.apache.helix.model.IdealState.RebalanceMode;
import org.apache.helix.testutil.TestUtil;
import org.apache.helix.testutil.ZkTestBase;
import org.apache.helix.tools.ClusterStateVerifier;
import org.testng.Assert;
import org.testng.annotations.Test;
public class TestRenamePartition extends ZkTestBase {
// map from clusterName to participants
final Map<String, MockParticipant[]> _participantMap =
new ConcurrentHashMap<String, MockParticipant[]>();
// map from clusterName to controllers
final Map<String, MockController> _controllerMap =
new ConcurrentHashMap<String, MockController>();
@Test()
public void testRenamePartitionAutoIS() throws Exception {
String clusterName = TestUtil.getTestName();
System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
TestHelper.setupCluster(clusterName, _zkaddr, 12918, // participant start port
"localhost", // participant name prefix
"TestDB", // resource name prefix
1, // resources
10, // partitions per resource
5, // number of nodes
3, // replicas
"MasterSlave", true); // do rebalance
startAndVerify(clusterName);
// rename partition name TestDB0_0 tp TestDB0_100
ZKHelixDataAccessor accessor =
new ZKHelixDataAccessor(clusterName, _baseAccessor);
Builder keyBuilder = accessor.keyBuilder();
IdealState idealState = accessor.getProperty(keyBuilder.idealStates("TestDB0"));
List<String> prioList = idealState.getRecord().getListFields().remove("TestDB0_0");
idealState.getRecord().getListFields().put("TestDB0_100", prioList);
accessor.setProperty(keyBuilder.idealStates("TestDB0"), idealState);
boolean result =
ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
_zkaddr, clusterName));
Assert.assertTrue(result);
stop(clusterName);
System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}
@Test()
public void testRenamePartitionCustomIS() throws Exception {
String clusterName = TestUtil.getTestName();
System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
TestHelper.setupCluster(clusterName, _zkaddr, 12918, // participant start port
"localhost", // participant name prefix
"TestDB", // resource name prefix
1, // resources
10, // partitions per resource
5, // number of nodes
3, // replicas
"MasterSlave", false); // do rebalance
// calculate idealState
List<String> instanceNames =
Arrays.asList("localhost_12918", "localhost_12919", "localhost_12920", "localhost_12921",
"localhost_12922");
ZNRecord destIS =
DefaultTwoStateStrategy.calculateIdealState(instanceNames, 10, 3 - 1, "TestDB0", "MASTER",
"SLAVE");
IdealState idealState = new IdealState(destIS);
idealState.setRebalanceMode(RebalanceMode.CUSTOMIZED);
idealState.setReplicas("3");
idealState.setStateModelDefId(StateModelDefId.from("MasterSlave"));
ZKHelixDataAccessor accessor =
new ZKHelixDataAccessor(clusterName, _baseAccessor);
Builder keyBuilder = accessor.keyBuilder();
accessor.setProperty(keyBuilder.idealStates("TestDB0"), idealState);
startAndVerify(clusterName);
Map<String, String> stateMap = idealState.getRecord().getMapFields().remove("TestDB0_0");
idealState.getRecord().getMapFields().put("TestDB0_100", stateMap);
accessor.setProperty(keyBuilder.idealStates("TestDB0"), idealState);
boolean result =
ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
_zkaddr, clusterName));
Assert.assertTrue(result);
stop(clusterName);
System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}
private void startAndVerify(String clusterName) throws Exception {
MockParticipant[] participants = new MockParticipant[5];
MockController controller =
new MockController(_zkaddr, clusterName, "controller_0");
controller.syncStart();
// start participants
for (int i = 0; i < 5; i++) {
String instanceName = "localhost_" + (12918 + i);
participants[i] = new MockParticipant(_zkaddr, clusterName, instanceName);
participants[i].syncStart();
}
boolean result =
ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
_zkaddr, clusterName));
Assert.assertTrue(result);
_participantMap.put(clusterName, participants);
_controllerMap.put(clusterName, controller);
}
private void stop(String clusterName) {
MockController controller = _controllerMap.get(clusterName);
if (controller != null) {
controller.syncStop();
}
MockParticipant[] participants = _participantMap.get(clusterName);
if (participants != null) {
for (MockParticipant participant : participants) {
participant.syncStop();
}
}
}
}