Package org.apache.helix.manager.zk

Examples of org.apache.helix.manager.zk.MockController

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

    MockController controller =
        new MockController(_zkaddr, clusterName, "controller_0");
    controller.syncStart();

    // pause controller
    // --enableCluster <clusterName true/false>
    ClusterSetup.processCommandLineArgs(new String[] {
        "--zkSvr", _zkaddr, "--enableCluster", clusterName, "false"
    });

    // start participants
    MockParticipant[] participants = new MockParticipant[n];
    for (int i = 0; i < n; i++) {
      String instanceName = "localhost_" + (12918 + i);

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

    // change localhost_12918 version to 0.5, so batch-message-mode will be ignored
    LiveInstance liveInstance = accessor.getProperty(keyBuilder.liveInstance("localhost_12918"));
    liveInstance.setHelixVersion("0.5");
    accessor.setProperty(keyBuilder.liveInstance("localhost_12918"), liveInstance);

    // resume controller
    // --enableCluster <clusterName true/false>
    ClusterSetup.processCommandLineArgs(new String[] {
        "--zkSvr", _zkaddr, "--enableCluster", clusterName, "true"
    });

    boolean result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(_zkaddr,
            clusterName));
    Assert.assertTrue(result);
    Assert.assertTrue(listener._maxNbOfChilds > 16,
        "Should see more than 16 messages at the same time (32 O->S and 32 S->M)");

    // clean up
    // wait for all zk callbacks done
    controller.syncStop();
    for (int i = 0; i < n; i++) {
      participants[i].syncStop();
    }

    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
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      final String instanceName = "localhost_" + (12918 + i);
      helixAdmin.addInstanceTag(clusterName, instanceName, TAG);
    }

    // Start controller
    MockController controller =
        new MockController(_zkaddr, clusterName, "controller");
    controller.syncStart();

    // Start participants
    MockParticipant[] participants = new MockParticipant[NUM_PARTICIPANTS];
    for (int i = 0; i < NUM_PARTICIPANTS; i++) {
      final String instanceName = "localhost_" + (12918 + i);
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    IdealState idealState = helixAdmin.getResourceIdealState(clusterName, RESOURCE_NAME);
    idealState.setInstanceGroupTag(TAG);
    helixAdmin.setResourceIdealState(clusterName, RESOURCE_NAME, idealState);

    // start controller
    MockController controller =
        new MockController(_zkaddr, clusterName, "controller");
    controller.syncStart();

    // start participants
    MockParticipant[] participants = new MockParticipant[NUM_PARTICIPANTS];
    for (int i = 0; i < NUM_PARTICIPANTS; i++) {
      final String instanceName = "localhost_" + (12918 + i);

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

    Thread.sleep(1000);
    boolean result =
        ClusterStateVerifier.verifyByZkCallback(new HelixTestUtil.EmptyZkVerifier(clusterName,
            RESOURCE_NAME, _zkclient));
    Assert.assertTrue(result, "External view and current state must be empty");

    // cleanup
    for (int i = 0; i < NUM_PARTICIPANTS; i++) {
      participants[i].syncStop();
    }
    controller.syncStop();
  }
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    IdealState idealState = helixAdmin.getResourceIdealState(clusterName, RESOURCE_NAME);
    idealState.setInstanceGroupTag(TAG);
    helixAdmin.setResourceIdealState(clusterName, RESOURCE_NAME, idealState);

    // start controller
    MockController controller =
        new MockController(_zkaddr, clusterName, "controller");
    controller.syncStart();

    // start participants
    MockParticipant[] participants = new MockParticipant[NUM_PARTICIPANTS];
    for (int i = 0; i < NUM_PARTICIPANTS; i++) {
      final String instanceName = "localhost_" + (12918 + i);

      participants[i] = new MockParticipant(_zkaddr, clusterName, instanceName);
      participants[i].syncStart();

      // ensure that everything is valid if this is a tagged node that is starting
      if (taggedNodes.contains(instanceName)) {
        // make sure that the best possible matches the external view
        Thread.sleep(500);
        boolean result =
            ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(_zkaddr,
                clusterName));
        Assert.assertTrue(result);

        // make sure that the tagged state of the nodes is still balanced
        result =
            ClusterStateVerifier.verifyByZkCallback(new TaggedZkVerifier(clusterName,
                RESOURCE_NAME, TAGGED_NODES, false));
        Assert.assertTrue(result, "initial assignment with all tagged nodes live is invalid");
      }
    }

    // cleanup
    for (int i = 0; i < NUM_PARTICIPANTS; i++) {
      String participantName = participants[i].getInstanceName();
      participants[i].syncStop();
      if (taggedNodes.contains(participantName)) {
        // check that the external view is still correct even after removing tagged nodes
        taggedNodes.remove(participantName);
        Thread.sleep(500);
        boolean result =
            ClusterStateVerifier.verifyByZkCallback(new TaggedZkVerifier(clusterName,
                RESOURCE_NAME, TAGGED_NODES, taggedNodes.isEmpty()));
        Assert.assertTrue(result, "incorrect state after removing " + participantName + ", "
            + taggedNodes + " remain");
      }
    }
    controller.syncStop();
    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
  }
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        1, // number of replicas
        "OnlineOffline", // state model
        RebalanceMode.FULL_AUTO, // automatic assignment
        true); // rebalance

    _controller = new MockController(ZK_ADDR, _clusterName, "controller0");
    _controller.connect();
  }
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        n, // number of nodes
        3, // replicas
        "MasterSlave", true); // do rebalance

    // start controller
    MockController controller =
        new MockController(_zkaddr, clusterName, "controller_0");
    controller.syncStart();

    Map<String, Set<String>> errPartitions = new HashMap<String, Set<String>>();
    errPartitions.put("SLAVE-MASTER", TestHelper.setOf("TestDB0_4"));
    errPartitions.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(_zkaddr, clusterName, instanceName);
        participants[i].setTransition(new ErrTransition(errPartitions));
      } else {
        participants[i] = new MockParticipant(_zkaddr, clusterName, instanceName);
      }
      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(_zkaddr,
                clusterName, errStateMap)));
    Assert.assertTrue(result, "Cluster verification fails");

    // reset resource "TestDB0"
    participants[0].setTransition(null);
    String command = "--zkSvr " + _zkaddr + " --resetResource " + clusterName + " TestDB0";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));

    result =
        ClusterStateVerifier
            .verifyByZkCallback((new ClusterStateVerifier.BestPossAndExtViewZkVerifier(_zkaddr,
                clusterName)));
    Assert.assertTrue(result, "Cluster verification fails");

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

    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
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    idealState.setReplicas(HelixConstants.StateModelToken.ANY_LIVEINSTANCE.toString());
    idealState.getRecord().setListField("TestSchemata0_0",
        Arrays.asList(HelixConstants.StateModelToken.ANY_LIVEINSTANCE.toString()));
    accessor.setProperty(key, idealState);

    MockController controller =
        new MockController(_zkaddr, clusterName, "controller");
    controller.syncStart();

    // start n-1 participants
    for (int i = 1; i < n; i++) {
      String instanceName = "localhost_" + (12918 + i);

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

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

    // start the remaining 1 participant
    participants[0] = new MockParticipant(_zkaddr, clusterName, "localhost_12918");
    participants[0].syncStart();

    // make sure we have all participants in MASTER state
    result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(_zkaddr,
            clusterName));
    Assert.assertTrue(result);
    key = keyBuilder.externalView("TestSchemata0");
    ExternalView externalView = accessor.getProperty(key);
    Map<String, String> stateMap = externalView.getStateMap("TestSchemata0_0");
    Assert.assertNotNull(stateMap);
    Assert.assertEquals(stateMap.size(), n, "all " + n + " participants should be in Master state");
    for (int i = 0; i < n; i++) {
      String instanceName = "localhost_" + (12918 + i);
      Assert.assertNotNull(stateMap.get(instanceName));
      Assert.assertEquals(stateMap.get(instanceName), "MASTER");
    }

    // clean up
    controller.syncStop();
    for (int i = 0; i < n; i++) {
      participants[i].syncStop();
    }

    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
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        8, // partitions per resource
        n, // number of nodes
        2, // replicas
        "MasterSlave", true); // do rebalance

    MockController controller =
        new MockController(_zkaddr, clusterName, "controller_0");
    controller.syncStart();

    // start participants
    Set<String> handledMsgSet = new HashSet<String>();
    MockParticipant[] participants = new MockParticipant[n];
    for (int i = 0; i < n; i++) {
      String instanceName = "localhost_" + (12918 + i);

      participants[i] = new MockParticipant(_zkaddr, clusterName, instanceName);
      participants[i].getMessagingService().registerMessageHandlerFactory(DUMMY_MSG_TYPE,
          new DummyMessageHandlerFactory(handledMsgSet));
      participants[i].syncStart();
    }

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

    // trigger dummy message handler
    checkDummyMsgHandler(participants[0], handledMsgSet);

    // expire localhost_12918
    ZkTestHelper.expireSession(participants[0].getZkClient());
    result =
        ClusterStateVerifier
            .verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(_zkaddr,
                clusterName));
    Assert.assertTrue(result);

    // trigger dummy message handler again
    checkDummyMsgHandler(participants[0], handledMsgSet);

    // clean up
    controller.syncStop();
    for (int i = 0; i < n; i++) {
      participants[i].syncStop();
    }

    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
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        builder.setTransition("OFFLINE", "DROPPED").setCommand(CommandAttribute.NOP.getName())
            .build();
    configAccessor.set(scope, cmdConfig.toKeyValueMap());

    // start controller
    MockController controller = new MockController(zkAddr, clusterName, "controller_0");
    controller.syncStart();

    // start helix-agent
    Map<String, Thread> agents = new HashMap<String, Thread>();
    for (int i = 0; i < n; i++) {
      final String instanceName = "localhost_" + (12918 + i);
      Thread agentThread = new Thread() {
        @Override
        public void run() {
          try {
            HelixAgentMain.main(new String[] {
                "--zkSvr", zkAddr, "--cluster", clusterName, "--instanceName", instanceName,
                "--stateModel", "MasterSlave"
            });
          } catch (Exception e) {
            LOG.error("Exception start helix-agent", e);
          }
        }
      };
      agents.put(instanceName, agentThread);
      agentThread.start();

      // wait participant thread to start
      Thread.sleep(1000);
    }

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

    // read the pid file should get current process id
    // String readPid = SystemUtil.getPidFromFile(new File(pidFileFirstPartition));
    // Assert.assertNotNull(readPid, "readPid is the pid for foo_test.py. should NOT be null");

    // String name = ManagementFactory.getRuntimeMXBean().getName();
    // String currentPid = name.substring(0,name.indexOf("@"));

    // System.out.println("read-pid: " + readPid + ", current-pid: " + currentPid);

    // drop resource will trigger M->S and S->O transitions
    ClusterSetup.processCommandLineArgs(new String[] {
        "--zkSvr", _zkaddr, "--dropResource", clusterName, "TestDB0"
    });
    result =
        ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(_zkaddr,
            clusterName));
    Assert.assertTrue(result);

    // clean up
    controller.syncStop();
    for (Thread agentThread : agents.values()) {
      agentThread.interrupt();
    }
    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
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      _participants[i] = new MockParticipant(_zkaddr, CLUSTER_NAME, instanceName);
      _participants[i].syncStart();
    }

    // Start controller
    _controller = new MockController(_zkaddr, CLUSTER_NAME, "controller_0");
    _controller.syncStart();

    // Connect a resolver
    _resolver = new ZKHelixResolver(_zkaddr);
    _resolver.connect();
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Related Classes of org.apache.helix.manager.zk.MockController

  • org.apache.helix.agent.TestHelixAgent
  • org.apache.helix.controller.stages.TestRebalancePipeline
  • org.apache.helix.controller.stages.TestStagesWithLogicalAccessors
  • org.apache.helix.integration.IntegrationTest
  • org.apache.helix.integration.manager.TestConsecutiveZkSessionExpiry
  • org.apache.helix.integration.manager.TestControllerManager
  • org.apache.helix.integration.manager.TestParticipantManager
  • org.apache.helix.integration.manager.TestStateModelLeak
  • org.apache.helix.integration.task.TestIndependentTaskRebalancer
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