package org.apache.helix.tools;
   
   /*
    * 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.HashMap;
  import java.util.Map;
  import java.util.Set;
  
  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.ErrTransition;
  import org.apache.helix.tools.ClusterSetup;
  import org.apache.helix.tools.ClusterStateVerifier;
  import org.apache.helix.webapp.resources.JsonParameters;
  import org.testng.Assert;
  import org.testng.annotations.Test;
  
  
  public class TestResetInstance extends AdminTestBase
  {
    @Test
    public void testResetInstance() throws Exception
    {
      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()));
  
      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
      
  //    // start admin thread
  //    AdminThread adminThread = new AdminThread(ZK_ADDR, _port);
  //    adminThread.start();
  
      // start controller
      ClusterController controller =
          new ClusterController(clusterName, "controller_0", ZK_ADDR);
      controller.syncStart();
  
      Map<String, Set<String>> errPartitions = new HashMap<String, Set<String>>()
      {
        {
          put("SLAVE-MASTER", TestHelper.setOf("TestDB0_4"));
          put("OFFLINE-SLAVE", TestHelper.setOf("TestDB0_8"));
        }
      };
  
      // start mock participants
      MockParticipant[] participants = new MockParticipant[n];
      for (int i = 0; i < n; i++)
      {
        String instanceName = "localhost_" + (12918 + i);
  
        if (i == 0)
        {
          participants[i] =
              new MockParticipant(clusterName,
                                  instanceName,
                                  ZK_ADDR,
                                  new ErrTransition(errPartitions));
        }
        else
        {
          participants[i] = new MockParticipant(clusterName, instanceName, ZK_ADDR);
        }
        participants[i].syncStart();
      }
  
      // verify cluster
     Map<String, Map<String, String>> errStateMap =
         new HashMap<String, Map<String, String>>();
     errStateMap.put("TestDB0", new HashMap<String, String>());
     errStateMap.get("TestDB0").put("TestDB0_4", "localhost_12918");
     errStateMap.get("TestDB0").put("TestDB0_8", "localhost_12918");
     boolean result =
         ClusterStateVerifier.verifyByZkCallback((new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                                        clusterName,
                                                                                                        errStateMap)));
     Assert.assertTrue(result, "Cluster verification fails");
 
     // reset node "localhost_12918"
     participants[0].setTransition(null);
     String hostName = "localhost_12918";
     String instanceUrl = "http://localhost:" + ADMIN_PORT + "/clusters/" + clusterName + "/instances/" + hostName;
 
     Map<String, String> paramMap = new HashMap<String, String>();
     paramMap.put(JsonParameters.MANAGEMENT_COMMAND, ClusterSetup.resetInstance);
     TestHelixAdminScenariosRest.assertSuccessPostOperation(instanceUrl, paramMap, false);
     
     result =
         ClusterStateVerifier.verifyByZkCallback((new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                                        clusterName)));
     Assert.assertTrue(result, "Cluster verification fails");
     
     // clean up
     // wait for all zk callbacks done
     Thread.sleep(1000);
 //    adminThread.stop();
     controller.syncStop();
     for (int i = 0; i < 5; i++)
     {
       participants[i].syncStop();
     }
 
     System.out.println("END " + clusterName + " at "
         + new Date(System.currentTimeMillis()));
   }
 }