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.List;
import java.util.Map;
import java.util.Set;
import org.apache.helix.PropertyKey.Builder;
import org.apache.helix.manager.zk.ZKHelixDataAccessor;
import org.apache.helix.manager.zk.ZNRecordSerializer;
import org.apache.helix.manager.zk.ZkBaseDataAccessor;
import org.apache.helix.manager.zk.ZkClient;
import org.apache.helix.model.ExternalView;
import org.apache.helix.util.StatusUpdateUtil;
import org.testng.Assert;
public class TestStatusUpdate extends ZkStandAloneCMTestBase
{
// For now write participant StatusUpdates to log4j.
// TODO: Need to investigate another data channel to report to controller and re-enable
// this test
// @Test
public void testParticipantStatusUpdates() throws Exception
{
ZkClient zkClient = new ZkClient(ZkIntegrationTestBase.ZK_ADDR);
zkClient.setZkSerializer(new ZNRecordSerializer());
ZKHelixDataAccessor accessor =
new ZKHelixDataAccessor(CLUSTER_NAME, new ZkBaseDataAccessor(zkClient));
Builder keyBuilder = accessor.keyBuilder();
List<ExternalView> extViews = accessor.getChildValues(keyBuilder.externalViews());
Assert.assertNotNull(extViews);
for (ExternalView extView : extViews)
{
String resourceName = extView.getResourceName();
Set<String> partitionSet = extView.getPartitionSet();
for (String partition : partitionSet)
{
Map<String, String> stateMap = extView.getStateMap(partition);
for (String instance : stateMap.keySet())
{
String state = stateMap.get(instance);
StatusUpdateUtil.StatusUpdateContents statusUpdates =
StatusUpdateUtil.StatusUpdateContents.getStatusUpdateContents(accessor,
instance,
resourceName,
partition);
Map<String, StatusUpdateUtil.TaskStatus> taskMessages =
statusUpdates.getTaskMessages();
List<StatusUpdateUtil.Transition> transitions = statusUpdates.getTransitions();
if (state.equals("MASTER"))
{
Assert.assertEquals(transitions.size() >= 2,
true,
"Invalid number of transitions");
StatusUpdateUtil.Transition lastTransition =
transitions.get(transitions.size() - 1);
StatusUpdateUtil.Transition prevTransition =
transitions.get(transitions.size() - 2);
Assert.assertEquals(taskMessages.get(lastTransition.getMsgID()),
StatusUpdateUtil.TaskStatus.COMPLETED,
"Incomplete transition");
Assert.assertEquals(taskMessages.get(prevTransition.getMsgID()),
StatusUpdateUtil.TaskStatus.COMPLETED,
"Incomplete transition");
Assert.assertEquals(lastTransition.getFromState(), "SLAVE", "Invalid State");
Assert.assertEquals(lastTransition.getToState(), "MASTER", "Invalid State");
}
else if (state.equals("SLAVE"))
{
Assert.assertEquals(transitions.size() >= 1,
true,
"Invalid number of transitions");
StatusUpdateUtil.Transition lastTransition =
transitions.get(transitions.size() - 1);
Assert.assertEquals(lastTransition.getFromState().equals("MASTER")
|| lastTransition.getFromState().equals("OFFLINE"),
true,
"Invalid transition");
Assert.assertEquals(lastTransition.getToState(), "SLAVE", "Invalid State");
}
}
}
}
}
}