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.ArrayList;
  import java.util.Date;
  import java.util.List;
  
  import org.apache.helix.TestHelper;
  import org.apache.helix.ZNRecord;
  import org.apache.helix.PropertyKey.Builder;
  import org.apache.helix.manager.zk.ZKHelixDataAccessor;
  import org.apache.helix.manager.zk.ZkBaseDataAccessor;
  import org.apache.helix.mock.controller.ClusterController;
  import org.apache.helix.mock.participant.MockParticipant;
  import org.apache.helix.mock.participant.MockMSModelFactory;
  import org.apache.helix.model.CurrentState;
  import org.apache.helix.model.ExternalView;
  import org.apache.helix.model.IdealState;
  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 TestAddStateModelFactoryAfterConnect extends ZkIntegrationTestBase
  {
    @Test
    public void testBasic() throws Exception
    {
      // Logger.getRootLogger().setLevel(Level.INFO);
      String className = TestHelper.getTestClassName();
      String methodName = TestHelper.getTestMethodName();
      String clusterName = className + "_" + methodName;
      final int n = 5;
  
      System.out.println("START " + clusterName + " at "
          + new Date(System.currentTimeMillis()));
  
      MockParticipant[] participants = new MockParticipant[n];
  
      TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, // participant port
                              "localhost", // participant name prefix
                              "TestDB", // resource name prefix
                              1, // resources
                              10, // partitions per resource
                              n, // number of nodes
                              3, // replicas
                              "MasterSlave",
                              true); // do rebalance
  
      ClusterController controller =
          new ClusterController(clusterName, "controller_0", ZK_ADDR);
      controller.syncStart();
  
      // start participants
      for (int i = 0; i < n; i++)
      {
        String instanceName = "localhost_" + (12918 + i);
  
        participants[i] = new MockParticipant(clusterName, instanceName, ZK_ADDR, null);
        participants[i].syncStart();
      }
  
      boolean result =
          ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                   clusterName));
      Assert.assertTrue(result);
  
      // add a new idealState without registering message handling factory
      ClusterSetup setupTool = new ClusterSetup(ZK_ADDR);
      setupTool.addResourceToCluster(clusterName, "TestDB1", 16, "MasterSlave");
  
      ZkBaseDataAccessor<ZNRecord> baseAccessor =
          new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
      ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, baseAccessor);
      Builder keyBuilder = accessor.keyBuilder();
      IdealState idealState = accessor.getProperty(keyBuilder.idealStates("TestDB1"));
      idealState.setStateModelFactoryName("TestDB1_Factory");
      accessor.setProperty(keyBuilder.idealStates("TestDB1"), idealState);
     setupTool.rebalanceStorageCluster(clusterName, "TestDB1", 3);
 
     // assert that we have received OFFLINE->SLAVE messages for all partitions
     int totalMsgs = 0;
     for (int retry = 0; retry < 5; retry++) {
     	Thread.sleep(100);
     	totalMsgs = 0;
         for (int i = 0; i < n; i++) {
         	List<Message> msgs = accessor.getChildValues(keyBuilder.messages(participants[i].getInstanceName()));
         	totalMsgs += msgs.size();
         }
         
         if (totalMsgs == 48) // partition# x replicas
         	break;
     }
     
     Assert.assertEquals(totalMsgs, 48,
       "Should accumulated 48 unprocessed messages (1 O->S per partition per replica) because TestDB1 is added without state-model-factory but was " + totalMsgs);
 
     // register "TestDB1_Factory" state model factory
     // Logger.getRootLogger().setLevel(Level.INFO);
     for (int i = 0; i < n; i++)
     {
       participants[i].getManager()
                      .getStateMachineEngine()
                      .registerStateModelFactory("MasterSlave",
                                                 new MockMSModelFactory(),
                                                 "TestDB1_Factory");
     }
 
     result =
         ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                  clusterName));
     Assert.assertTrue(result);
 
     // 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()));
 
   }
 }