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.Date;
  import java.util.concurrent.atomic.AtomicBoolean;
  
  import org.apache.helix.InstanceType;
  import org.apache.helix.NotificationContext;
  import org.apache.helix.TestHelper;
  import org.apache.helix.ZkHelixTestManager;
  import org.apache.helix.ZkTestHelper;
  import org.apache.helix.mock.controller.ClusterController;
  import org.apache.helix.mock.participant.MockParticipant;
  import org.apache.helix.mock.participant.MockTransition;
  import org.apache.helix.model.Message;
  import org.apache.helix.tools.ClusterStateVerifier;
  import org.apache.helix.tools.ClusterStateVerifier.BestPossAndExtViewZkVerifier;
  import org.apache.log4j.Level;
  import org.apache.log4j.Logger;
  import org.testng.Assert;
  
  
  public class TestSessionExpiryInTransition extends ZkIntegrationTestBase
  {
  
    public class SessionExpiryTransition extends MockTransition
    {
      private final AtomicBoolean _done = new AtomicBoolean();
  
      @Override
      public void doTransition(Message message, NotificationContext context)
      {
        ZkHelixTestManager manager = (ZkHelixTestManager)context.getManager();
       
        String instance = message.getTgtName();
        String partition = message.getPartitionName();
        if (instance.equals("localhost_12918")
            && partition.equals("TestDB0_1")  // TestDB0_1 is SLAVE on localhost_12918
            && _done.getAndSet(true) == false)
        {
          try
          {
            ZkTestHelper.expireSession(manager.getZkClient());
          }
          catch (Exception e)
          {
            // TODO Auto-generated catch block
            e.printStackTrace();
          }
        }
      }
    }
   
    // TODO: disable test first until we have a clean design in handling zk disconnect/session-expiry
    // when there is pending messages
    // @Test
    public void testSessionExpiryInTransition() throws Exception
    {
      Logger.getRootLogger().setLevel(Level.WARN);
  
      String className = TestHelper.getTestClassName();
      String methodName = TestHelper.getTestMethodName();
      final String clusterName = className + "_" + methodName;
  
      System.out.println("START " + clusterName + " at "
          + new Date(System.currentTimeMillis()));
  
      MockParticipant[] participants = new MockParticipant[5];
  
      TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, // participant port
                              "localhost", // participant name prefix
                              "TestDB", // resource name prefix
                              1, // resources
                              10, // partitions per resource
                              5, // number of nodes
                              3, // replicas
                              "MasterSlave",
                              true); // do rebalance
  
      // start controller
      ClusterController controller =
         new ClusterController(clusterName, "controller_0", ZK_ADDR);
     controller.syncStart();
 
     // start participants
     for (int i = 0; i < 5; i++)
     {
       String instanceName = "localhost_" + (12918 + i);
       ZkHelixTestManager manager =
           new ZkHelixTestManager(clusterName,
                                  instanceName,
                                  InstanceType.PARTICIPANT,
                                  ZK_ADDR);
       participants[i] = new MockParticipant(manager, new SessionExpiryTransition());
       participants[i].syncStart();
     }
 
     boolean result =
         ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                  clusterName));
     Assert.assertTrue(result);
 
     // clean up
     for (int i = 0; i < 5; i++)
     {
       participants[i].syncStop();
     }
 
     Thread.sleep(2000);
     controller.syncStop();
 
     System.out.println("END " + clusterName + " at "
         + new Date(System.currentTimeMillis()));
 
   }
 }