package org.apache.helix.controller.stages;
/*
* 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.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import org.apache.helix.HelixDataAccessor;
import org.apache.helix.HelixManager;
import org.apache.helix.Mocks;
import org.apache.helix.ZNRecord;
import org.apache.helix.PropertyKey.Builder;
import org.apache.helix.controller.pipeline.Stage;
import org.apache.helix.controller.pipeline.StageContext;
import org.apache.helix.controller.stages.ClusterEvent;
import org.apache.helix.model.IdealState;
import org.apache.helix.model.LiveInstance;
import org.apache.helix.model.Resource;
import org.apache.helix.model.StateModelDefinition;
import org.apache.helix.model.IdealState.IdealStateModeProperty;
import org.apache.helix.tools.StateModelConfigGenerator;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.BeforeMethod;
public class BaseStageTest
{
protected HelixManager manager;
protected HelixDataAccessor accessor;
protected ClusterEvent event;
@BeforeClass()
public void beforeClass()
{
String className = this.getClass().getName();
System.out.println("START " + className.substring(className.lastIndexOf('.') + 1)
+ " at "+ new Date(System.currentTimeMillis()));
}
@AfterClass()
public void afterClass()
{
String className = this.getClass().getName();
System.out.println("END " + className.substring(className.lastIndexOf('.') + 1)
+ " at "+ new Date(System.currentTimeMillis()));
}
@BeforeMethod()
public void setup()
{
String clusterName = "testCluster-" + UUID.randomUUID().toString();
manager = new Mocks.MockManager(clusterName);
accessor = manager.getHelixDataAccessor();
event = new ClusterEvent("sampleEvent");
}
protected List<IdealState> setupIdealState(int nodes, String[] resources,
int partitions, int replicas)
{
List<IdealState> idealStates = new ArrayList<IdealState>();
List<String> instances = new ArrayList<String>();
for (int i = 0; i < nodes; i++)
{
instances.add("localhost_" + i);
}
for (int i = 0; i < resources.length; i++)
{
String resourceName = resources[i];
ZNRecord record = new ZNRecord(resourceName);
for (int p = 0; p < partitions; p++)
{
List<String> value = new ArrayList<String>();
for (int r = 0; r < replicas; r++)
{
value.add("localhost_" + (p + r + 1) % nodes);
}
record.setListField(resourceName + "_" + p, value);
}
IdealState idealState = new IdealState(record);
idealState.setStateModelDefRef("MasterSlave");
idealState.setIdealStateMode(IdealStateModeProperty.AUTO.toString());
idealState.setNumPartitions(partitions);
idealStates.add(idealState);
// System.out.println(idealState);
Builder keyBuilder = accessor.keyBuilder();
accessor.setProperty(keyBuilder.idealStates(resourceName), idealState);
}
return idealStates;
}
protected void setupLiveInstances(int numLiveInstances)
{
// setup liveInstances
for (int i = 0; i < numLiveInstances; i++)
{
LiveInstance liveInstance = new LiveInstance("localhost_" + i);
liveInstance.setSessionId("session_" + i);
Builder keyBuilder = accessor.keyBuilder();
accessor.setProperty(keyBuilder.liveInstance("localhost_" + i), liveInstance);
}
}
protected void runStage(ClusterEvent event, Stage stage)
{
event.addAttribute("helixmanager", manager);
StageContext context = new StageContext();
stage.init(context);
stage.preProcess();
try
{
stage.process(event);
} catch (Exception e)
{
e.printStackTrace();
}
stage.postProcess();
}
protected void setupStateModel()
{
ZNRecord masterSlave = new StateModelConfigGenerator()
.generateConfigForMasterSlave();
Builder keyBuilder = accessor.keyBuilder();
accessor.setProperty(keyBuilder.stateModelDef(masterSlave.getId()), new StateModelDefinition(masterSlave));
ZNRecord leaderStandby = new StateModelConfigGenerator()
.generateConfigForLeaderStandby();
accessor.setProperty(keyBuilder.stateModelDef(leaderStandby.getId()), new StateModelDefinition(leaderStandby));
ZNRecord onlineOffline = new StateModelConfigGenerator()
.generateConfigForOnlineOffline();
accessor.setProperty(keyBuilder.stateModelDef(onlineOffline.getId()), new StateModelDefinition(onlineOffline));
}
protected Map<String, Resource> getResourceMap()
{
Map<String, Resource> resourceMap = new HashMap<String, Resource>();
Resource testResource = new Resource("testResourceName");
testResource.setStateModelDefRef("MasterSlave");
testResource.addPartition("testResourceName_0");
testResource.addPartition("testResourceName_1");
testResource.addPartition("testResourceName_2");
testResource.addPartition("testResourceName_3");
testResource.addPartition("testResourceName_4");
resourceMap.put("testResourceName", testResource);
return resourceMap;
}
}