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.Map;
import org.apache.helix.ZNRecord;
import org.apache.helix.PropertyKey.Builder;
import org.apache.helix.controller.stages.AttributeName;
import org.apache.helix.controller.stages.CurrentStateComputationStage;
import org.apache.helix.controller.stages.CurrentStateOutput;
import org.apache.helix.controller.stages.ReadClusterDataStage;
import org.apache.helix.model.CurrentState;
import org.apache.helix.model.Message;
import org.apache.helix.model.Partition;
import org.apache.helix.model.Resource;
import org.testng.AssertJUnit;
import org.testng.annotations.Test;
public class TestCurrentStateComputationStage extends BaseStageTest
{
@Test
public void testEmptyCS()
{
Map<String, Resource> resourceMap = getResourceMap();
event.addAttribute(AttributeName.RESOURCES.toString(), resourceMap);
CurrentStateComputationStage stage = new CurrentStateComputationStage();
runStage(event, new ReadClusterDataStage());
runStage(event, stage);
CurrentStateOutput output =
event.getAttribute(AttributeName.CURRENT_STATE.toString());
AssertJUnit.assertEquals(output.getCurrentStateMap("testResourceName",
new Partition("testResourceName_0"))
.size(),
0);
}
@Test
public void testSimpleCS()
{
// setup resource
Map<String, Resource> resourceMap = getResourceMap();
setupLiveInstances(5);
event.addAttribute(AttributeName.RESOURCES.toString(), resourceMap);
CurrentStateComputationStage stage = new CurrentStateComputationStage();
runStage(event, new ReadClusterDataStage());
runStage(event, stage);
CurrentStateOutput output1 =
event.getAttribute(AttributeName.CURRENT_STATE.toString());
AssertJUnit.assertEquals(output1.getCurrentStateMap("testResourceName",
new Partition("testResourceName_0"))
.size(),
0);
// Add a state transition messages
Message message = new Message(Message.MessageType.STATE_TRANSITION, "msg1");
message.setFromState("OFFLINE");
message.setToState("SLAVE");
message.setResourceName("testResourceName");
message.setPartitionName("testResourceName_1");
message.setTgtName("localhost_3");
message.setTgtSessionId("session_3");
Builder keyBuilder = accessor.keyBuilder();
accessor.setProperty(keyBuilder.message("localhost_" + 3, message.getId()), message);
runStage(event, new ReadClusterDataStage());
runStage(event, stage);
CurrentStateOutput output2 =
event.getAttribute(AttributeName.CURRENT_STATE.toString());
String pendingState =
output2.getPendingState("testResourceName",
new Partition("testResourceName_1"),
"localhost_3");
AssertJUnit.assertEquals(pendingState, "SLAVE");
ZNRecord record1 = new ZNRecord("testResourceName");
// Add a current state that matches sessionId and one that does not match
CurrentState stateWithLiveSession = new CurrentState(record1);
stateWithLiveSession.setSessionId("session_3");
stateWithLiveSession.setStateModelDefRef("MasterSlave");
stateWithLiveSession.setState("testResourceName_1", "OFFLINE");
ZNRecord record2 = new ZNRecord("testResourceName");
CurrentState stateWithDeadSession = new CurrentState(record2);
stateWithDeadSession.setSessionId("session_dead");
stateWithDeadSession.setStateModelDefRef("MasterSlave");
stateWithDeadSession.setState("testResourceName_1", "MASTER");
accessor.setProperty(keyBuilder.currentState("localhost_3",
"session_3",
"testResourceName"),
stateWithLiveSession);
accessor.setProperty(keyBuilder.currentState("localhost_3",
"session_dead",
"testResourceName"),
stateWithDeadSession);
runStage(event, new ReadClusterDataStage());
runStage(event, stage);
CurrentStateOutput output3 =
event.getAttribute(AttributeName.CURRENT_STATE.toString());
String currentState =
output3.getCurrentState("testResourceName",
new Partition("testResourceName_1"),
"localhost_3");
AssertJUnit.assertEquals(currentState, "OFFLINE");
}
}