package org.apache.helix.healthcheck;
   
   /*
    * 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.HelixDataAccessor;
  import org.apache.helix.HelixManager;
  import org.apache.helix.NotificationContext;
  import org.apache.helix.TestHelper;
  import org.apache.helix.ZNRecord;
  import org.apache.helix.PropertyKey.Builder;
  import org.apache.helix.integration.ZkIntegrationTestBase;
  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.MockTransition;
  import org.apache.helix.model.HealthStat;
  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.apache.helix.tools.ClusterStateVerifier.MasterNbInExtViewVerifier;
  import org.testng.Assert;
  import org.testng.annotations.Test;
  
  
  public class TestDummyAlerts extends ZkIntegrationTestBase
  {
    public class DummyAlertsTransition extends MockTransition
    {
      private final AtomicBoolean _done = new AtomicBoolean(false);
  
      @Override
      public void doTransition(Message message, NotificationContext context)
      {
        HelixManager manager = context.getManager();
        HelixDataAccessor accessor = manager.getHelixDataAccessor();
        Builder keyBuilder = accessor.keyBuilder();
        
        String instance = message.getTgtName();
        if (_done.getAndSet(true) == false)
        {
          for (int i = 0; i < 5; i++)
          {
  //          System.out.println(instance + " sets healthReport: " + "mockAlerts" + i);
            accessor.setProperty(keyBuilder.healthReport(instance, "mockAlerts"),
                                 new HealthStat(new ZNRecord("mockAlerts" + i)));
          }
        }
      }
  
    }
  
    @Test()
    public void testDummyAlerts() throws Exception
    {
      // Logger.getRootLogger().setLevel(Level.INFO);
      String className = TestHelper.getTestClassName();
      String methodName = TestHelper.getTestMethodName();
      String clusterName = className + "_" + methodName;
      final int n = 5;
  
      MockParticipant[] participants = new MockParticipant[n];
  
      System.out.println("START " + clusterName + " at "
          + new Date(System.currentTimeMillis()));
  
      TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, // participant start
                                                           // 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
  
      ClusterSetup setupTool = new ClusterSetup(ZK_ADDR);
     enableHealthCheck(clusterName);
     setupTool.getClusterManagementTool()
              .addAlert(clusterName,
                        "EXP(decay(1.0)(*.defaultPerfCounters@defaultPerfCounters.availableCPUs))CMP(GREATER)CON(2)");
 
     // start controller
     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,
                               new DummyAlertsTransition());
       participants[i].syncStart();
     }
 
     boolean result =
         ClusterStateVerifier.verifyByZkCallback(new MasterNbInExtViewVerifier(ZK_ADDR,
                                                                               clusterName));
     Assert.assertTrue(result);
 
     result =
         ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                  clusterName));
     Assert.assertTrue(result);
 
     // other verifications go here
     ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
     Builder keyBuilder = accessor.keyBuilder();
 
     for (int i = 0; i < n; i++)
     {
       String instance = "localhost_" + (12918 + i);
       ZNRecord record = null;
       for(int j = 0; j < 10; j++)
       {
         record =
             accessor.getProperty(keyBuilder.healthReport(instance, "mockAlerts")).getRecord();
         if(record.getId().equals("mockAlerts4"))
         {
           break;
         }
         else
         {
           Thread.sleep(500);
         }
       }
       Assert.assertEquals(record.getId(), "mockAlerts4");
     }
 
     // clean up
     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()));
   }
 }