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.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.helix.ExternalViewChangeListener;
import org.apache.helix.HelixManager;
import org.apache.helix.HelixManagerFactory;
import org.apache.helix.InstanceType;
import org.apache.helix.NotificationContext;
import org.apache.helix.model.ExternalView;
import org.apache.helix.tools.ClusterStateVerifier;
import org.testng.Assert;
import org.testng.annotations.Test;
public class TestBasicSpectator extends ZkStandAloneCMTestBase implements ExternalViewChangeListener
{
Map<String, Integer> _externalViewChanges = new HashMap<String, Integer>();
@Test
public void TestSpectator() throws Exception
{
HelixManager relayHelixManager = HelixManagerFactory.getZKHelixManager(CLUSTER_NAME,
null,
InstanceType.SPECTATOR,
ZK_ADDR);
relayHelixManager.connect();
relayHelixManager.addExternalViewChangeListener(this);
_setupTool.addResourceToCluster(CLUSTER_NAME, "NextDB", 64, STATE_MODEL);
_setupTool.rebalanceStorageCluster(CLUSTER_NAME, "NextDB", 3);
boolean result = ClusterStateVerifier.verifyByPolling(
new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, CLUSTER_NAME));
Assert.assertTrue(result);
Assert.assertTrue(_externalViewChanges.containsKey("NextDB"));
Assert.assertTrue(_externalViewChanges.containsKey(TEST_DB));
}
@Override
public void onExternalViewChange(List<ExternalView> externalViewList,
NotificationContext changeContext)
{
for(ExternalView view : externalViewList)
{
if(!_externalViewChanges.containsKey(view.getResourceName()))
{
_externalViewChanges.put(view.getResourceName(), 1);
}
else
{
_externalViewChanges.put(view.getResourceName(), _externalViewChanges.get(view.getResourceName())+ 1);
}
}
}
}