Package com.linkedin.helix.mock.controller

Examples of com.linkedin.helix.mock.controller.ClusterController

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                            3, // replicas
                            "MasterSlave",
                            true); // do rebalance

    // start controller
    ClusterController controller =
        new ClusterController(clusterName, "controller_0", ZK_ADDR);
    controller.syncStart();
   
    // start participants
    Map<String, Set<String>> errTransitions = new HashMap<String, Set<String>>();
    errTransitions.put("SLAVE-MASTER", TestHelper.setOf("TestDB0_4"));
    errTransitions.put("OFFLINE-SLAVE", TestHelper.setOf("TestDB0_8"));

    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(errTransitions));
      }
      else
      {
        participants[i] = new MockParticipant(clusterName, instanceName, ZK_ADDR, null);
      }
      participants[i].syncStart();
    }

    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 BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                 clusterName,
                                                                                 errStateMap));
    Assert.assertTrue(result);
   
    // drop resource containing error partitions should not change partitions in error state
    ClusterSetup.processCommandLineArgs(new String[]{"--zkSvr", ZK_ADDR, "--dropResource", clusterName, "TestDB0"});


    // make sure TestDB0_4 and TestDB0_8 partitions stay in ERROR state
    result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                 clusterName,
                                                                                 errStateMap));
    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();
    }
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                            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 < 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 schemata resource group
    String command = "--zkSvr " + ZK_ADDR +" --addResource " + clusterName +
        " schemata 1 STORAGE_DEFAULT_SM_SCHEMATA";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    command = "--zkSvr " + ZK_ADDR +" --rebalance " + clusterName +
        " schemata 1";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
   
    result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                 clusterName));
    Assert.assertTrue(result);
   
    // drop schemata resource group
    System.out.println("Dropping schemata resource group...");
    command = "--zkSvr " + ZK_ADDR +" --dropResource " + clusterName +
        " schemata";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                 clusterName));
    Assert.assertTrue(result);

    // make sure schemata external view is empty
    ZkBaseDataAccessor<ZNRecord> baseAccessor =
        new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, baseAccessor);
    Builder keyBuilder = accessor.keyBuilder();
    ExternalView extView = accessor.getProperty(keyBuilder.externalView("schemata"));
    Assert.assertEquals(extView.getPartitionSet().size(), 0, "schemata externalView should be empty but was \"" + extView + "\"");
   
    // clean up
    // wait for all zk callbacks done
    Thread.sleep(1000);
    controller.syncStop();
    for (int i = 0; i < 5; i++)
    {
      participants[i].syncStop();
    }
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    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 =
          accessor.getProperty(keyBuilder.healthReport(instance, "mockAlerts")).getRecord();
      Assert.assertEquals(record.getId(), "mockAlerts4");
    }

    // clean up
    Thread.sleep(1000);
    controller.syncStop();
    for (int i = 0; i < 5; i++)
    {
      participants[i].syncStop();
    }
   
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    // start distributed cluster controllers
    ClusterController[] controllers = new ClusterController[n + n];
    for (int i = 0; i < n; i++)
    {
      controllers[i] =
          new ClusterController(controllerClusterName,
                                "controller_" + i,
                                ZK_ADDR,
                                HelixControllerMain.DISTRIBUTED.toString());
      controllers[i].syncStart();
    }

    boolean result =
        ClusterStateVerifier.verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                                      controllerClusterName),
                                                30000);
    Assert.assertTrue(result, "Controller cluster NOT in ideal state");

    // start first cluster
    MockParticipant[] participants = new MockParticipant[n];
    final String firstClusterName = clusterNamePrefix + "0_0";
    for (int i = 0; i < n; i++)
    {
      String instanceName = "localhost0_" + (12918 + i);
      participants[i] =
          new MockParticipant(firstClusterName, instanceName, ZK_ADDR, null);
      participants[i].syncStart();
    }

    result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                 firstClusterName));
    Assert.assertTrue(result, "first cluster NOT in ideal state");
   
   
    // add more controllers to controller cluster
    ClusterSetup setupTool = new ClusterSetup(ZK_ADDR);
    for (int i = 0; i < n; i++)
    {
      String controller = "controller:" + (n + i);
      setupTool.addInstanceToCluster(controllerClusterName, controller);
    }
    setupTool.rebalanceStorageCluster(controllerClusterName, clusterNamePrefix + "0", 6);
    for (int i = n; i < 2 * n; i++)
    {
      controllers[i] =
          new ClusterController(controllerClusterName,
                                "controller_" + i,
                                ZK_ADDR,
                                HelixControllerMain.DISTRIBUTED.toString());
      controllers[i].syncStart();
    }
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                            3, // replicas
                            "MasterSlave",
                            true); // do rebalance

    // 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 command =
        "--zkSvr " + ZK_ADDR + " --resetInstance " + clusterName
            + " localhost_12918";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));

    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);
    controller.syncStop();
    for (int i = 0; i < 5; i++)
    {
      participants[i].syncStop();
    }
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                            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);

      participants[i] = new MockParticipant(clusterName, instanceName, ZK_ADDR, null);
      participants[i].syncStart();
    }

    boolean result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                 clusterName));
    Assert.assertTrue(result);

    // pause the cluster and make sure pause is persistent
    ZkClient zkClient = new ZkClient(ZK_ADDR);
    zkClient.setZkSerializer(new ZNRecordSerializer());
    final HelixDataAccessor tmpAccessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(zkClient));
   
    String cmd = "-zkSvr " + ZK_ADDR + " -enableCluster " + clusterName + " false";
    ClusterSetup.processCommandLineArgs(cmd.split(" "));
   
    tmpAccessor.setProperty(tmpAccessor.keyBuilder().pause(), new PauseSignal("pause"));
    zkClient.close();
   
    // wait for controller to be signaled by pause
    Thread.sleep(1000);

    // add a new resource group
    ClusterSetup setupTool = new ClusterSetup(ZK_ADDR);
    setupTool.addResourceToCluster(clusterName, "TestDB1", 10, "MasterSlave");
    setupTool.rebalanceStorageCluster(clusterName, "TestDB1", 3);

    // make sure TestDB1 external view is empty
    TestHelper.verifyWithTimeout("verifyEmptyCurStateAndExtView",
                                 1000,
                                 clusterName,
                                 "TestDB1",
                                 TestHelper.<String> setOf("localhost_12918",
                                                           "localhost_12919",
                                                           "localhost_12920",
                                                           "localhost_12921",
                                                           "localhost_12922"),
                                 ZK_ADDR);

    // resume controller
    final HelixDataAccessor accessor =
        new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));

    cmd = "-zkSvr " + ZK_ADDR + " -enableCluster " + clusterName + " true";
    ClusterSetup.processCommandLineArgs(cmd.split(" "));
    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()));
  }
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    String idealStatePath = PropertyPathConfig.getPath(PropertyType.IDEALSTATES, clusterName, "TestDB0");
    ZNRecord idealState = _gZkClient.readData(idealStatePath);
    idealState.getSimpleFields().remove(IdealState.IdealStateProperty.REPLICAS.toString());
    _gZkClient.writeData(idealStatePath, idealState);
   
    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);

      participants[i] = new MockParticipant(clusterName, instanceName, ZK_ADDR, null);
      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()));
  }
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    // registry a message listener so we know how many message generated
    TestZkChildListener listener = new TestZkChildListener();
    _gZkClient.subscribeChildChanges(keyBuilder.messages("localhost_12918").getPath(), listener);

   
    ClusterController controller =
        new ClusterController(clusterName, "controller_0", ZK_ADDR);
    controller.syncStart();

    // start participants
    MockParticipant[] participants = new MockParticipant[n];
    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);
    Assert.assertTrue(listener._maxNbOfChilds <= 2, "Should get no more than 2 messages (O->S and S->M)");
   
    // clean up
    // wait for all zk callbacks done
    Thread.sleep(1000);
    controller.syncStop();
    for (int i = 0; i < n; i++)
    {
      participants[i].syncStop();
    }
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                            n, // number of nodes
                            2, // replicas
                            "MasterSlave",
                            true); // do rebalance
   
    ClusterController controller =
        new ClusterController(clusterName, "controller_0", ZK_ADDR);
    controller.syncStart();

    // start participants
    MockParticipant[] participants = new MockParticipant[n];
    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);
   
    // stop all participants
    Thread.sleep(1000);
    for (int i = 0; i < n; i++)
    {
      participants[i].syncStop();
    }
   
    // enable group message
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    Builder keyBuilder = accessor.keyBuilder();
    IdealState idealState = accessor.getProperty(keyBuilder.idealStates("TestDB0"));
    idealState.setGroupMessageMode(true);
    accessor.setProperty(keyBuilder.idealStates("TestDB0"), idealState);

    // registry a message listener so we know how many message generated
    TestZkChildListener listener = new TestZkChildListener();
    _gZkClient.subscribeChildChanges(keyBuilder.messages("localhost_12918").getPath(), listener);

    // restart all 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();
    }
   
    result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                 clusterName));
    Assert.assertTrue(result);
    Assert.assertTrue(listener._maxNbOfChilds <= 2, "Should get no more than 2 messages (O->S and S->M)");

   
    // clean up
    // wait for all zk callbacks done
    Thread.sleep(1000);
    controller.syncStop();
    for (int i = 0; i < n; i++)
    {
      participants[i].syncStop();
    }
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//    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 a non-exist partition, should throw exception
    String hostName = "localhost_12918";
    String instanceUrl = getInstanceUrl(clusterName, hostName);

    Map<String, String> paramMap = new HashMap<String, String>();
    paramMap.put(JsonParameters.MANAGEMENT_COMMAND, ClusterSetup.resetPartition);
    paramMap.put(JsonParameters.PARTITION, "TestDB0_nonExist");
    paramMap.put(JsonParameters.RESOURCE, "TestDB0");
    System.out.println("IGNORABLE exception: test reset non-exist partition");
    TestHelixAdminScenariosRest.assertSuccessPostOperation(instanceUrl, paramMap, true);
   
   
    // reset one error partition
    errPartitions.clear();  // remove("SLAVE-MASTER");
    participants[0].setTransition(new ErrTransitionWithResetCnt(errPartitions));
    clearStatusUpdate(clusterName, "localhost_12918", "TestDB0", "TestDB0_4");
    _errToOfflineInvoked = 0;

    paramMap.put(JsonParameters.PARTITION, "TestDB0_4 TestDB0_8");
    TestHelixAdminScenariosRest.assertSuccessPostOperation(instanceUrl, paramMap, false);

    Thread.sleep(400); // wait reset to be done
    System.out.println("IGNORABLE exception: test reset non-error partition");
    TestHelixAdminScenariosRest.assertSuccessPostOperation(instanceUrl, paramMap, true);

    result =
        ClusterStateVerifier.verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
                                                                                                   clusterName));
    Assert.assertTrue(result);
    Assert.assertEquals(_errToOfflineInvoked, 2, "reset() should be invoked 2 times");
   

    // 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();
    }
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