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.Date;
import java.util.Map;
import java.util.Set;
import org.apache.helix.HelixAdmin;
import org.apache.helix.HelixDataAccessor;
import org.apache.helix.PropertyKey;
import org.apache.helix.TestHelper;
import org.apache.helix.manager.zk.MockParticipant;
import org.apache.helix.manager.zk.MockController;
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.model.IdealState.RebalanceMode;
import org.apache.helix.testutil.ZkTestBase;
import org.apache.helix.tools.ClusterStateVerifier;
import org.testng.Assert;
import org.testng.annotations.Test;
public class TestDisableResource extends ZkTestBase {
private static final int N = 2;
private static final int PARTITION_NUM = 1;
@Test
public void testDisableResourceInSemiAutoMode() throws Exception {
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
String clusterName = className + "_" + methodName;
System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
TestHelper.setupCluster(clusterName, _zkaddr, 12918, // participant port
"localhost", // participant name prefix
"TestDB", // resource name prefix
1, // resources
PARTITION_NUM, // partitions per resource
N, // number of nodes
2, // replicas
"MasterSlave", true); // do rebalance
MockController controller =
new MockController(_zkaddr, clusterName, "controller");
controller.syncStart();
// start participants
MockParticipant participants[] = new MockParticipant[N];
for (int i = 0; i < N; i++) {
String instanceName = "localhost_" + (12918 + i);
participants[i] = new MockParticipant(_zkaddr, clusterName, instanceName);
participants[i].syncStart();
}
boolean result =
ClusterStateVerifier
.verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(_zkaddr,
clusterName));
Assert.assertTrue(result);
// Disable TestDB0
enableResource(clusterName, false);
checkExternalView(clusterName);
// Re-enable TestDB0
enableResource(clusterName, true);
result =
ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
_zkaddr, clusterName));
Assert.assertTrue(result);
// Clean up
controller.syncStop();
for (int i = 0; i < N; i++) {
participants[i].syncStop();
}
System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}
@Test
public void testDisableResourceInFullAutoMode() throws Exception {
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
String clusterName = className + "_" + methodName;
System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
TestHelper.setupCluster(clusterName, _zkaddr, 12918, // participant port
"localhost", // participant name prefix
"TestDB", // resource name prefix
1, // resources
PARTITION_NUM, // partitions per resource
N, // number of nodes
2, // replicas
"MasterSlave", RebalanceMode.FULL_AUTO, true); // do rebalance
MockController controller =
new MockController(_zkaddr, clusterName, "controller");
controller.syncStart();
// start participants
MockParticipant participants[] = new MockParticipant[N];
for (int i = 0; i < N; i++) {
String instanceName = "localhost_" + (12918 + i);
participants[i] = new MockParticipant(_zkaddr, clusterName, instanceName);
participants[i].syncStart();
}
boolean result =
ClusterStateVerifier
.verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(_zkaddr,
clusterName));
Assert.assertTrue(result);
// disable TestDB0
enableResource(clusterName, false);
checkExternalView(clusterName);
// Re-enable TestDB0
enableResource(clusterName, true);
result =
ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
_zkaddr, clusterName));
Assert.assertTrue(result);
// Clean up
controller.syncStop();
for (int i = 0; i < N; i++) {
participants[i].syncStop();
}
System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}
@Test
public void testDisableResourceInCustomMode() throws Exception {
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
String clusterName = className + "_" + methodName;
System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
TestHelper.setupCluster(clusterName, _zkaddr, 12918, // participant port
"localhost", // participant name prefix
"TestDB", // resource name prefix
1, // resources
PARTITION_NUM, // partitions per resource
N, // number of nodes
2, // replicas
"MasterSlave", RebalanceMode.CUSTOMIZED, true); // do rebalance
// set up custom ideal-state
HelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, _baseAccessor);
PropertyKey.Builder keyBuilder = accessor.keyBuilder();
IdealState idealState = accessor.getProperty(keyBuilder.idealStates("TestDB0"));
idealState.setPartitionState("TestDB0_0", "localhost_12918", "SLAVE");
idealState.setPartitionState("TestDB0_0", "localhost_12919", "SLAVE");
accessor.setProperty(keyBuilder.idealStates("TestDB0"), idealState);
MockController controller =
new MockController(_zkaddr, clusterName, "controller");
controller.syncStart();
// start participants
MockParticipant participants[] = new MockParticipant[N];
for (int i = 0; i < N; i++) {
String instanceName = "localhost_" + (12918 + i);
participants[i] = new MockParticipant(_zkaddr, clusterName, instanceName);
participants[i].syncStart();
}
boolean result =
ClusterStateVerifier
.verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(_zkaddr,
clusterName));
Assert.assertTrue(result);
// Disable TestDB0
enableResource(clusterName, false);
checkExternalView(clusterName);
// Re-enable TestDB0
enableResource(clusterName, true);
result =
ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
_zkaddr, clusterName));
Assert.assertTrue(result);
// Clean up
controller.syncStop();
for (int i = 0; i < N; i++) {
participants[i].syncStop();
}
System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}
private void enableResource(String clusterName, boolean enabled) {
HelixAdmin admin = new ZKHelixAdmin(_zkclient);
admin.enableResource(clusterName, "TestDB0", enabled);
}
/**
* Check all partitions are in OFFLINE state
* @param accessor
* @throws Exception
*/
private void checkExternalView(String clusterName) throws Exception {
final HelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, _baseAccessor);
// verify that states of TestDB0 are all OFFLINE
boolean result = TestHelper.verify(new TestHelper.Verifier() {
@Override
public boolean verify() throws Exception {
PropertyKey.Builder keyBuilder = accessor.keyBuilder();
ExternalView extView = accessor.getProperty(keyBuilder.externalView("TestDB0"));
if (extView == null) {
return false;
}
Set<String> partitionSet = extView.getPartitionSet();
if (partitionSet == null || partitionSet.size() != PARTITION_NUM) {
return false;
}
for (String partition : partitionSet) {
Map<String, String> instanceStates = extView.getStateMap(partition);
for (String state : instanceStates.values()) {
if (!"OFFLINE".equals(state)) {
return false;
}
}
}
return true;
}
}, 10 * 1000);
Assert.assertTrue(result);
}
}