Package org.apache.helix.manager.zk

Examples of org.apache.helix.manager.zk.ZkHelixLeaderElection.onControllerChange()

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    GenericHelixController pipeline = new GenericHelixController();

    ZkHelixLeaderElection leader = new ZkHelixLeaderElection(controller.getController(), pipeline);
    NotificationContext context = new NotificationContext(controller);
    context.setType(NotificationContext.Type.INIT);
    leader.onControllerChange(context);

    LiveInstance liveInstance = accessor.getProperty(keyBuilder.controllerLeader());
    AssertJUnit.assertEquals(controllerName, liveInstance.getInstanceName());

    // Start another controller, leader should remain unchanged
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    MockController controller1 = new MockController(_zkaddr, clusterName, controllerName1);
    GenericHelixController pipeline1 = new GenericHelixController();
    ZkHelixLeaderElection leader1 = new ZkHelixLeaderElection(controller1.getController(), pipeline1);
    NotificationContext context1 = new NotificationContext(controller1);
    context1.setType(NotificationContext.Type.INIT);
    leader1.onControllerChange(context1);
    liveInstance = accessor.getProperty(keyBuilder.controllerLeader());
    AssertJUnit.assertEquals(controllerName, liveInstance.getInstanceName());

    // clean up
    controller1.getConn().disconnect();
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    GenericHelixController pipeline = new GenericHelixController();

    ZkHelixLeaderElection leader = new ZkHelixLeaderElection(controller.getController(), pipeline);
    NotificationContext context = new NotificationContext(controller);
    context.setType(NotificationContext.Type.CALLBACK);
    leader.onControllerChange(context);

    LiveInstance liveInstance = accessor.getProperty(keyBuilder.controllerLeader());
    AssertJUnit.assertEquals(controllerName, liveInstance.getInstanceName());

    // Start another controller, leader should remain unchanged
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    GenericHelixController pipeline1 = new GenericHelixController();
    ZkHelixLeaderElection leader1 = new ZkHelixLeaderElection(controller.getController(), pipeline1);
    context = new NotificationContext(controller);
    context.setType(NotificationContext.Type.CALLBACK);
    leader1.onControllerChange(context);
    liveInstance = accessor.getProperty(keyBuilder.controllerLeader());
    AssertJUnit.assertEquals(controllerName, liveInstance.getInstanceName());

    // clean up
    controller1.getConn().disconnect();
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