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 org.apache.helix.HelixManager;
  import org.apache.helix.NotificationContext;
  import org.apache.helix.TestHelper;
  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.ClusterSetup;
  import org.apache.helix.tools.ClusterStateVerifier;
  import org.apache.helix.tools.ClusterStateVerifier.BestPossAndExtViewZkVerifier;
  import org.testng.Assert;
  import org.testng.annotations.Test;
  
  
  public class TestEnablePartitionDuringDisable extends ZkIntegrationTestBase
  {
    static
    {
      // Logger.getRootLogger().setLevel(Level.INFO);
    }
  
    class EnablePartitionTransition extends MockTransition
    {
      int slaveToOfflineCnt = 0;
      int offlineToSlave = 0;
  
      @Override
      public void doTransition(Message message, NotificationContext context)
      {
        HelixManager manager = context.getManager();
        String clusterName = manager.getClusterName();
  
        String instance = message.getTgtName();
        String partitionName = message.getPartitionName();
        String fromState = message.getFromState();
        String toState = message.getToState();
        if (instance.equals("localhost_12919") && partitionName.equals("TestDB0_0"))
        {
          if (fromState.equals("SLAVE") && toState.equals("OFFLINE"))
          {
            slaveToOfflineCnt++;
  
            try
            {
              String command =
                  "--zkSvr " + ZK_ADDR + " --enablePartition true " + clusterName
                      + " localhost_12919 TestDB0 TestDB0_0";
  
              ClusterSetup.processCommandLineArgs(command.split("\\s+"));
            }
            catch (Exception e)
            {
              // TODO Auto-generated catch block
              e.printStackTrace();
            }
  
          }
          else if (slaveToOfflineCnt > 0 && fromState.equals("OFFLINE") && toState.equals("SLAVE"))
          {
            offlineToSlave++;
          }
        }
      }
  
    }
  
    @Test
    public void testEnablePartitionDuringDisable() throws Exception
    {
      // Logger.getRootLogger().setLevel(Level.INFO);
      String className = TestHelper.getTestClassName();
      String methodName = TestHelper.getTestMethodName();
      String clusterName = className + "_" + methodName;
  
      System.out.println("START " + clusterName + " at "
          + new Date(System.currentTimeMillis()));
 
     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
 
     ClusterController controller =
         new ClusterController(clusterName, "controller_0", ZK_ADDR);
     controller.syncStart();
 
     // start participants
     EnablePartitionTransition transition = new EnablePartitionTransition();
     MockParticipant[] participants = new MockParticipant[5];
     for (int i = 0; i < 5; i++)
     {
       String instanceName = "localhost_" + (12918 + i);
 
       if (instanceName.equals("localhost_12919"))
       {
         participants[i] =
             new MockParticipant(clusterName,
                                 instanceName,
                                 ZK_ADDR,
                                 transition);
       }
       else
       {
         participants[i] = new MockParticipant(clusterName, instanceName, ZK_ADDR, null);
       }
       participants[i].syncStart();
     }
 
     boolean result =
         ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                  clusterName));
     Assert.assertTrue(result);
 
     // disable partitions
     String command =
         "--zkSvr " + ZK_ADDR + " --enablePartition false " + clusterName
             + " localhost_12919 TestDB0 TestDB0_0";
 
     ClusterSetup.processCommandLineArgs(command.split("\\s+"));
 
     // ensure we get 1 slaveToOffline and 1 offlineToSlave after disable partition
     long startT = System.currentTimeMillis();
     while (System.currentTimeMillis() - startT < 10000)  // retry in 5s
     {
       if (transition.slaveToOfflineCnt > 0 && transition.offlineToSlave > 0)
       {
         break;
       }
 
       Thread.sleep(100);
     }
     long endT = System.currentTimeMillis();
     System.out.println("1 disable and re-enable took: " + (endT - startT) + "ms");
     Assert.assertEquals(transition.slaveToOfflineCnt, 1, "should get 1 slaveToOffline transition");
     Assert.assertEquals(transition.offlineToSlave, 1, "should get 1 offlineToSlave transition");
 
     // clean up
     // wait for all zk callbacks done
     Thread.sleep(1000);
     controller.syncStop();
     for (int i = 0; i < 5; i++)
     {
       participants[i].syncStop();
     }
 
     System.out.println("END " + clusterName + " at "
         + new Date(System.currentTimeMillis()));
 
   }
 }