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

Example 16 with ZKHelixDataAccessor

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

the class ZkUnitTestBase method setupStateModel.

protected void setupStateModel(String clusterName) {
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
    Builder keyBuilder = accessor.keyBuilder();
    StateModelDefinition masterSlave = new StateModelDefinition(StateModelConfigGenerator.generateConfigForMasterSlave());
    accessor.setProperty(keyBuilder.stateModelDef(masterSlave.getId()), masterSlave);
    StateModelDefinition leaderStandby = new StateModelDefinition(StateModelConfigGenerator.generateConfigForLeaderStandby());
    accessor.setProperty(keyBuilder.stateModelDef(leaderStandby.getId()), leaderStandby);
    StateModelDefinition onlineOffline = new StateModelDefinition(StateModelConfigGenerator.generateConfigForOnlineOffline());
    accessor.setProperty(keyBuilder.stateModelDef(onlineOffline.getId()), onlineOffline);
}

Example 17 with ZKHelixDataAccessor

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

the class ZkUnitTestBase method verifyEnabled.

public void verifyEnabled(ZkClient zkClient, String clusterName, String instance, boolean wantEnabled) {
    ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(zkClient));
    Builder keyBuilder = accessor.keyBuilder();
    InstanceConfig config = accessor.getProperty(keyBuilder.instanceConfig(instance));
    AssertJUnit.assertEquals(wantEnabled, config.getInstanceEnabled());
}

Example 18 with ZKHelixDataAccessor

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

the class TestDisable method testDisablePartitionCustomIS.

@Test
public void testDisablePartitionCustomIS() throws Exception {
    // Logger.getRootLogger().setLevel(Level.INFO);
    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()));
    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();
    }
    boolean result = ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    // disable [TestDB0_0, TestDB0_5] on localhost_12919
    String command = "--zkSvr " + ZK_ADDR + " --enablePartition false " + clusterName + " localhost_12919 TestDB0 TestDB0_0 TestDB0_5";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    result = ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    // make sure localhost_12918 is in OFFLINE state for [TestDB0_0, TestDB0_5]
    Map<String, Map<String, String>> expectStateMap = new HashMap<String, Map<String, String>>();
    Map<String, String> expectInstanceStateMap = new HashMap<String, String>();
    expectInstanceStateMap.put("localhost_12919", "OFFLINE");
    expectStateMap.put("TestDB0_0", expectInstanceStateMap);
    expectStateMap.put("TestDB0_5", expectInstanceStateMap);
    result = ZkTestHelper.verifyState(_gZkClient, clusterName, "TestDB0", expectStateMap, "==");
    Assert.assertTrue(result, "localhost_12919" + " should be in OFFLINE for [TestDB0_0, TestDB0_5]");
    // re-enable localhost_12919 for [TestDB0_0, TestDB0_5]
    command = "--zkSvr " + ZK_ADDR + " --enablePartition true " + clusterName + " localhost_12919 TestDB0 TestDB0_0 TestDB0_5";
    ClusterSetup.processCommandLineArgs(command.split("\\s+"));
    result = ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    // make sure localhost_12919 is NOT in OFFLINE state for [TestDB0_0, TestDB0_5]
    result = ZkTestHelper.verifyState(_gZkClient, clusterName, "TestDB0", expectStateMap, "!=");
    Assert.assertTrue(result, "localhost_12919" + " 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 19 with ZKHelixDataAccessor

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

the class TestDisableCustomCodeRunner method test.

@Test
public void test() throws Exception {
    String className = TestHelper.getTestClassName();
    String methodName = TestHelper.getTestMethodName();
    String clusterName = className + "_" + methodName;
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
    // 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
    PARTITION_NUM, // number of nodes
    N, // replicas
    2, "MasterSlave", // do rebalance
    true);
    ClusterControllerManager controller = new ClusterControllerManager(ZK_ADDR, clusterName, "controller");
    controller.syncStart();
    // start participants
    Map<String, MockParticipantManager> participants = new HashMap<String, MockParticipantManager>();
    Map<String, HelixCustomCodeRunner> customCodeRunners = new HashMap<String, HelixCustomCodeRunner>();
    Map<String, DummyCallback> callbacks = new HashMap<String, DummyCallback>();
    for (int i = 0; i < N; i++) {
        String instanceName = "localhost_" + (12918 + i);
        participants.put(instanceName, new MockParticipantManager(ZK_ADDR, clusterName, instanceName));
        customCodeRunners.put(instanceName, new HelixCustomCodeRunner(participants.get(instanceName), ZK_ADDR));
        callbacks.put(instanceName, new DummyCallback());
        customCodeRunners.get(instanceName).invoke(callbacks.get(instanceName)).on(ChangeType.LIVE_INSTANCE).usingLeaderStandbyModel("TestParticLeader").start();
        participants.get(instanceName).syncStart();
    }
    boolean result = ClusterStateVerifier.verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    // Make sure callback is registered
    BaseDataAccessor<ZNRecord> baseAccessor = new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    final HelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, baseAccessor);
    PropertyKey.Builder keyBuilder = accessor.keyBuilder();
    final String customCodeRunnerResource = customCodeRunners.get("localhost_12918").getResourceName();
    ExternalView extView = accessor.getProperty(keyBuilder.externalView(customCodeRunnerResource));
    Map<String, String> instanceStates = extView.getStateMap(customCodeRunnerResource + "_0");
    String leader = null;
    for (String instance : instanceStates.keySet()) {
        String state = instanceStates.get(instance);
        if ("LEADER".equals(state)) {
            leader = instance;
            break;
        }
    }
    Assert.assertNotNull(leader);
    for (String instance : callbacks.keySet()) {
        DummyCallback callback = callbacks.get(instance);
        if (instance.equals(leader)) {
            Assert.assertTrue(callback.isInitTypeInvoked());
        } else {
            Assert.assertFalse(callback.isInitTypeInvoked());
        }
        callback.reset();
    }
    // Disable custom-code runner resource
    HelixAdmin admin = new ZKHelixAdmin(_gZkClient);
    admin.enableResource(clusterName, customCodeRunnerResource, false);
    // Verify that states of custom-code runner are all OFFLINE
    result = TestHelper.verify(new TestHelper.Verifier() {

        @Override
        public boolean verify() throws Exception {
            PropertyKey.Builder keyBuilder = accessor.keyBuilder();
            ExternalView extView = accessor.getProperty(keyBuilder.externalView(customCodeRunnerResource));
            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);
    // Change live-instance should not invoke any custom-code runner
    LiveInstance fakeInstance = new LiveInstance("fakeInstance");
    fakeInstance.setSessionId("fakeSessionId");
    fakeInstance.setHelixVersion("0.6");
    accessor.setProperty(keyBuilder.liveInstance("fakeInstance"), fakeInstance);
    Thread.sleep(1000);
    for (Map.Entry<String, DummyCallback> e : callbacks.entrySet()) {
        String instance = e.getKey();
        DummyCallback callback = e.getValue();
        Assert.assertFalse(callback.isInitTypeInvoked());
        Assert.assertFalse(callback.isCallbackTypeInvoked());
        // Ensure that we were told that a leader stopped being the leader
        if (instance.equals(leader)) {
            Assert.assertTrue(callback.isFinalizeTypeInvoked());
        }
    }
    // Remove fake instance
    accessor.removeProperty(keyBuilder.liveInstance("fakeInstance"));
    // Re-enable custom-code runner
    admin.enableResource(clusterName, customCodeRunnerResource, true);
    result = ClusterStateVerifier.verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    // Verify that custom-invoke is invoked again
    extView = accessor.getProperty(keyBuilder.externalView(customCodeRunnerResource));
    instanceStates = extView.getStateMap(customCodeRunnerResource + "_0");
    leader = null;
    for (String instance : instanceStates.keySet()) {
        String state = instanceStates.get(instance);
        if ("LEADER".equals(state)) {
            leader = instance;
            break;
        }
    }
    Assert.assertNotNull(leader);
    for (String instance : callbacks.keySet()) {
        DummyCallback callback = callbacks.get(instance);
        if (instance.equals(leader)) {
            Assert.assertTrue(callback.isInitTypeInvoked());
        } else {
            Assert.assertFalse(callback.isInitTypeInvoked());
        }
        callback.reset();
    }
    // Add a fake instance should invoke custom-code runner
    accessor.setProperty(keyBuilder.liveInstance("fakeInstance"), fakeInstance);
    Thread.sleep(1000);
    for (String instance : callbacks.keySet()) {
        DummyCallback callback = callbacks.get(instance);
        if (instance.equals(leader)) {
            Assert.assertTrue(callback.isCallbackTypeInvoked());
        } else {
            Assert.assertFalse(callback.isCallbackTypeInvoked());
        }
    }
    // Clean up
    controller.syncStop();
    for (MockParticipantManager participant : participants.values()) {
        participant.syncStop();
    }
    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}

Example 20 with ZKHelixDataAccessor

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

the class TestDisableResource method testDisableResourceInCustomMode.

@Test
public void testDisableResourceInCustomMode() throws Exception {
    String className = TestHelper.getTestClassName();
    String methodName = TestHelper.getTestMethodName();
    String clusterName = className + "_" + methodName;
    System.out.println("START " + clusterName + " at " + new Date(System.currentTimeMillis()));
    // 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
    PARTITION_NUM, // number of nodes
    N, // replicas
    2, "MasterSlave", RebalanceMode.CUSTOMIZED, // do rebalance
    true);
    // set up custom ideal-state
    BaseDataAccessor<ZNRecord> baseAccessor = new ZkBaseDataAccessor<ZNRecord>(_gZkClient);
    HelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, baseAccessor);
    PropertyKey.Builder keyBuilder = accessor.keyBuilder();
    IdealState idealState = accessor.getProperty(keyBuilder.idealStates("TestDB0"));
    idealState.setPartitionState("TestDB0_0", "localhost_12918", "SLAVE");
    idealState.setPartitionState("TestDB0_0", "localhost_12919", "SLAVE");
    accessor.setProperty(keyBuilder.idealStates("TestDB0"), idealState);
    ClusterControllerManager controller = new ClusterControllerManager(ZK_ADDR, clusterName, "controller");
    controller.syncStart();
    // start participants
    MockParticipantManager[] participants = new MockParticipantManager[N];
    for (int i = 0; i < N; i++) {
        String instanceName = "localhost_" + (12918 + i);
        participants[i] = new MockParticipantManager(ZK_ADDR, clusterName, instanceName);
        participants[i].syncStart();
    }
    boolean result = ClusterStateVerifier.verifyByZkCallback(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    // Disable TestDB0
    enableResource(clusterName, false);
    checkExternalView(clusterName);
    // Re-enable TestDB0
    enableResource(clusterName, true);
    result = ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR, clusterName));
    Assert.assertTrue(result);
    // Clean up
    controller.syncStop();
    for (int i = 0; i < N; i++) {
        participants[i].syncStop();
    }
    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));
}