Examples with ZKHelixDataAccessor org.apache.helix.manager.zk.ZKHelixDataAccessor used on opensource projects

Example 71 with ZKHelixDataAccessor

use of org.apache.helix.manager.zk.ZKHelixDataAccessor in project helix by apache.

the class TestStatusUpdate method testParticipantStatusUpdates.

// For now write participant StatusUpdates to log4j.
// TODO: Need to investigate another data channel to report to controller and re-enable
// this test
// @Test
public void testParticipantStatusUpdates() throws Exception {
    ZkClient zkClient = new ZkClient(ZkIntegrationTestBase.ZK_ADDR);
    zkClient.setZkSerializer(new ZNRecordSerializer());
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(CLUSTER_NAME, new ZkBaseDataAccessor(zkClient));
    Builder keyBuilder = accessor.keyBuilder();
    List<ExternalView> extViews = accessor.getChildValues(keyBuilder.externalViews());
    Assert.assertNotNull(extViews);
    for (ExternalView extView : extViews) {
        String resourceName = extView.getResourceName();
        Set<String> partitionSet = extView.getPartitionSet();
        for (String partition : partitionSet) {
            Map<String, String> stateMap = extView.getStateMap(partition);
            for (String instance : stateMap.keySet()) {
                String state = stateMap.get(instance);
                StatusUpdateUtil.StatusUpdateContents statusUpdates = StatusUpdateUtil.StatusUpdateContents.getStatusUpdateContents(accessor, instance, resourceName, partition);
                Map<String, StatusUpdateUtil.TaskStatus> taskMessages = statusUpdates.getTaskMessages();
                List<StatusUpdateUtil.Transition> transitions = statusUpdates.getTransitions();
                if (state.equals("MASTER")) {
                    Assert.assertEquals(transitions.size() >= 2, true, "Invalid number of transitions");
                    StatusUpdateUtil.Transition lastTransition = transitions.get(transitions.size() - 1);
                    StatusUpdateUtil.Transition prevTransition = transitions.get(transitions.size() - 2);
                    Assert.assertEquals(taskMessages.get(lastTransition.getMsgID()), StatusUpdateUtil.TaskStatus.COMPLETED, "Incomplete transition");
                    Assert.assertEquals(taskMessages.get(prevTransition.getMsgID()), StatusUpdateUtil.TaskStatus.COMPLETED, "Incomplete transition");
                    Assert.assertEquals(lastTransition.getFromState(), "SLAVE", "Invalid State");
                    Assert.assertEquals(lastTransition.getToState(), "MASTER", "Invalid State");
                } else if (state.equals("SLAVE")) {
                    Assert.assertEquals(transitions.size() >= 1, true, "Invalid number of transitions");
                    StatusUpdateUtil.Transition lastTransition = transitions.get(transitions.size() - 1);
                    Assert.assertEquals(lastTransition.getFromState().equals("MASTER") || lastTransition.getFromState().equals("OFFLINE"), true, "Invalid transition");
                    Assert.assertEquals(lastTransition.getToState(), "SLAVE", "Invalid State");
                }
            }
        }
    }
}

Example 72 with ZKHelixDataAccessor

use of org.apache.helix.manager.zk.ZKHelixDataAccessor in project helix by apache.

the class TestDisable method testDisableNodeCustomIS.

@Test
public void testDisableNodeCustomIS() throws Exception {
    // Logger.getRootLogger().setLevel(Level.INFO);
    String className = TestHelper.getTestClassName();
    String methodName = TestHelper.getTestMethodName();
    String clusterName = className + "_" + methodName;
    final int n = 5;
    String disableNode = "localhost_12918";
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
    MockParticipantManager[] participants = new MockParticipantManager[n];
    // participant port
    TestHelper.setupCluster(// participant port
    clusterName, // participant port
    ZK_ADDR, // participant port
    12918, // participant name prefix
    "localhost", // resource name prefix
    "TestDB", // resources
    1, // partitions per resource
    8, // number of nodes
    n, // replicas
    3, "MasterSlave", // do rebalance
    true);
    // set ideal state to customized mode
    ZkBaseDataAccessor<ZNRecord> baseAccessor = new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, baseAccessor);
    Builder keyBuilder = accessor.keyBuilder();
    IdealState idealState = accessor.getProperty(keyBuilder.idealStates("TestDB0"));
    idealState.setRebalanceMode(RebalanceMode.CUSTOMIZED);
    accessor.setProperty(keyBuilder.idealStates("TestDB0"), idealState);
    // start controller
    ClusterControllerManager controller = new ClusterControllerManager(ZK_ADDR, clusterName, "controller_0");
    controller.syncStart();
    // start participants
    for (int i = 0; i < n; i++) {
        String instanceName = "localhost_" + (12918 + i);
        participants[i] = new MockParticipantManager(ZK_ADDR, clusterName, instanceName);
        participants[i].syncStart();
    }
    HelixClusterVerifier _clusterVerifier = new BestPossibleExternalViewVerifier.Builder(clusterName).setZkAddr(ZK_ADDR).build();
    Assert.assertTrue(_clusterVerifier.verify());
    // disable localhost_12918
    String command = "--zkSvr " + ZK_ADDR + " --enableInstance " + clusterName + " " + disableNode + " false";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    Assert.assertTrue(_clusterVerifier.verify());
    // make sure localhost_12918 is in OFFLINE state
    Map<String, Map<String, String>> expectStateMap = new HashMap<String, Map<String, String>>();
    Map<String, String> expectInstanceStateMap = new HashMap<String, String>();
    expectInstanceStateMap.put(disableNode, "OFFLINE");
    expectStateMap.put(".*", expectInstanceStateMap);
    boolean result = ZkTestHelper.verifyState(_gZkClient, clusterName, "TestDB0", expectStateMap, "==");
    Assert.assertTrue(result, disableNode + " should be in OFFLINE");
    // re-enable localhost_12918
    command = "--zkSvr " + ZK_ADDR + " --enableInstance " + clusterName + " " + disableNode + " true";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    Assert.assertTrue(_clusterVerifier.verify());
    // make sure localhost_12918 is NOT in OFFLINE state
    result = ZkTestHelper.verifyState(_gZkClient, clusterName, "TestDB0", expectStateMap, "!=");
    Assert.assertTrue(result, disableNode + " should NOT be in OFFLINE");
    // clean up
    // wait for all zk callbacks done
    controller.syncStop();
    for (int i = 0; i < 5; i++) {
        participants[i].syncStop();
    }
    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}

Example 73 with ZKHelixDataAccessor

use of org.apache.helix.manager.zk.ZKHelixDataAccessor in project helix by apache.

the class TestDisableExternalView method testDisableExternalView.

@Test
public void testDisableExternalView() throws InterruptedException {
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(CLUSTER_NAME, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    PropertyKey.Builder keyBuilder = accessor.keyBuilder();
    // verify external view for TEST_DB1 does not exist
    ExternalView externalView = null;
    externalView = accessor.getProperty(keyBuilder.externalView(TEST_DB1));
    Assert.assertNull(externalView, "There should be no external-view for " + TEST_DB1 + ", but is: " + externalView);
    // verify external view for TEST_DB2 exists
    externalView = accessor.getProperty(keyBuilder.externalView(TEST_DB2));
    Assert.assertNotNull(externalView, "Could not find external-view for " + TEST_DB2);
    // disable external view in IS
    IdealState idealState = _admin.getResourceIdealState(CLUSTER_NAME, TEST_DB2);
    idealState.setDisableExternalView(true);
    _admin.setResourceIdealState(CLUSTER_NAME, TEST_DB2, idealState);
    // touch liveinstance to trigger externalview compute stage
    String instance = PARTICIPANT_PREFIX + "_" + START_PORT;
    HelixProperty liveInstance = accessor.getProperty(keyBuilder.liveInstance(instance));
    accessor.setProperty(keyBuilder.liveInstance(instance), liveInstance);
    // verify the external view for the db got removed
    for (int i = 0; i < 10; i++) {
        Thread.sleep(100);
        externalView = accessor.getProperty(keyBuilder.externalView(TEST_DB2));
        if (externalView == null) {
            break;
        }
    }
    Assert.assertNull(externalView, "external-view for " + TEST_DB2 + " should be removed, but was: " + externalView);
}

Example 74 with ZKHelixDataAccessor

use of org.apache.helix.manager.zk.ZKHelixDataAccessor in project helix by apache.

the class TestDisableResource method checkExternalView.

/**
 * Check all partitions are in OFFLINE state
 * @param clusterName
 * @throws Exception
 */
private void checkExternalView(String clusterName) throws Exception {
    BaseDataAccessor<ZNRecord> baseAccessor = new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    final HelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, baseAccessor);
    // verify that states of TestDB0 are all OFFLINE
    boolean result = TestHelper.verify(new TestHelper.Verifier() {

        @Override
        public boolean verify() throws Exception {
            PropertyKey.Builder keyBuilder = accessor.keyBuilder();
            ExternalView extView = accessor.getProperty(keyBuilder.externalView("TestDB0"));
            if (extView == null) {
                return false;
            }
            Set<String> partitionSet = extView.getPartitionSet();
            if (partitionSet == null || partitionSet.size() != PARTITION_NUM) {
                return false;
            }
            for (String partition : partitionSet) {
                Map<String, String> instanceStates = extView.getStateMap(partition);
                for (String state : instanceStates.values()) {
                    if (!"OFFLINE".equals(state)) {
                        return false;
                    }
                }
            }
            return true;
        }
    }, 10 * 1000);
    Assert.assertTrue(result);
}

Example 75 with ZKHelixDataAccessor

use of org.apache.helix.manager.zk.ZKHelixDataAccessor in project helix by apache.

the class ZkIntegrationTestBase method getCurrentLeader.

protected String getCurrentLeader(ZkClient zkClient, String clusterName) {
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(zkClient));
    Builder keyBuilder = accessor.keyBuilder();
    LiveInstance leader = accessor.getProperty(keyBuilder.controllerLeader());
    if (leader == null) {
        return null;
    }
    return leader.getInstanceName();
}