package org.apache.helix.tools;
/*
* 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.HashMap;
import java.util.Map;
import java.util.Set;
import org.apache.helix.TestHelper;
import org.apache.helix.integration.manager.ClusterControllerManager;
import org.apache.helix.integration.manager.MockParticipantManager;
import org.apache.helix.mock.participant.ErrTransition;
import org.apache.helix.tools.ClusterSetup;
import org.apache.helix.tools.ClusterStateVerifier;
import org.apache.helix.webapp.resources.JsonParameters;
import org.testng.Assert;
import org.testng.annotations.Test;
public class TestResetInstance extends AdminTestBase {
@Test
public void testResetInstance() throws Exception {
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
String clusterName = className + "_" + methodName;
final int n = 5;
System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, // participant port
"localhost", // participant name prefix
"TestDB", // resource name prefix
1, // resources
10, // partitions per resource
n, // number of nodes
3, // replicas
"MasterSlave", true); // do rebalance
// start controller
ClusterControllerManager controller = new ClusterControllerManager(ZK_ADDR, clusterName, "controller_0");
controller.syncStart();
Map<String, Set<String>> errPartitions = new HashMap<String, Set<String>>() {
{
put("SLAVE-MASTER", TestHelper.setOf("TestDB0_4"));
put("OFFLINE-SLAVE", TestHelper.setOf("TestDB0_8"));
}
};
// start mock participants
MockParticipantManager[] participants = new MockParticipantManager[n];
for (int i = 0; i < n; i++) {
String instanceName = "localhost_" + (12918 + i);
if (i == 0) {
participants[i] =
new MockParticipantManager(ZK_ADDR, clusterName, instanceName);
participants[i].setTransition(new ErrTransition(errPartitions));
} else {
participants[i] = new MockParticipantManager(ZK_ADDR, clusterName, instanceName);
}
participants[i].syncStart();
}
// verify cluster
Map<String, Map<String, String>> errStateMap = new HashMap<String, Map<String, String>>();
errStateMap.put("TestDB0", new HashMap<String, String>());
errStateMap.get("TestDB0").put("TestDB0_4", "localhost_12918");
errStateMap.get("TestDB0").put("TestDB0_8", "localhost_12918");
boolean result =
ClusterStateVerifier
.verifyByZkCallback((new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
clusterName, errStateMap)));
Assert.assertTrue(result, "Cluster verification fails");
// reset node "localhost_12918"
participants[0].setTransition(null);
String hostName = "localhost_12918";
String instanceUrl =
"http://localhost:" + ADMIN_PORT + "/clusters/" + clusterName + "/instances/" + hostName;
Map<String, String> paramMap = new HashMap<String, String>();
paramMap.put(JsonParameters.MANAGEMENT_COMMAND, ClusterSetup.resetInstance);
TestHelixAdminScenariosRest.assertSuccessPostOperation(instanceUrl, paramMap, false);
result =
ClusterStateVerifier
.verifyByZkCallback((new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
clusterName)));
Assert.assertTrue(result, "Cluster verification fails");
// clean up
controller.syncStop();
for (int i = 0; i < 5; i++) {
participants[i].syncStop();
}
System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}
}