Examples of com.hazelcast.core.MemberSelector

com.hazelcast.core.MemberSelector
Implementations of this interface are thought to select members that are capable of executing a special kind of task.
The {@link #select(Member)} method is called for every availablemember in the cluster and it's up to the implementation to decide if the member is going to be used or not.

A basic implementation for example could select members on existence of a special attribute in the members like the following example show:
```
public class MyMemberSelector implements MemberSelector { public boolean select(Member member) { return Boolean.TRUE.equals(member.getAttribute("my.special.executor")); } }
```

    public void testEmptyMemberSelector() {
        final HazelcastInstance instance = createHazelcastInstance();
        final String name = randomString();
        final IExecutorService executorService = instance.getExecutorService(name);
        HazelcastInstanceAwareRunnable task = new HazelcastInstanceAwareRunnable();
        executorService.execute(task, new MemberSelector() {
            @Override
            public boolean select(final Member member) {
                return false;
            }
        });

View Full Code Here


    @Test(expected = RejectedExecutionException.class)
    public void testExecute_withNoMemberSelected() {
        IExecutorService service = client.getExecutorService(randomString());
        String mapName = randomString();
        MemberSelector selector = new SelectNoMembers();


        service.execute(new MapPutRunnable(mapName), selector);
    }

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    public void testSubmitCallable_withMemberSelector() throws Exception {
        IExecutorService service = client.getExecutorService(randomString());


        String msg = randomString();
        Callable<String> callable = new AppendCallable(msg);
        MemberSelector selectAll = new SelectAllMembers();


        Future<String> f = service.submit(callable, selectAll);


        assertEquals(msg + AppendCallable.APPENDAGE, f.get());
    }

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    @Test
    public void testSubmitCallableToMembers_withMemberSelector() throws Exception {
        IExecutorService service = client.getExecutorService(randomString());


        Callable<String> getUuidCallable = new GetMemberUuidTask();
        MemberSelector selectAll = new SelectAllMembers();


        Map<Member, Future<String>> map = service.submitToMembers(getUuidCallable, selectAll);
        for (Member member : map.keySet()) {
            Future<String> result = map.get(member);
            String uuid = result.get();

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        IExecutorService service = client.getExecutorService(randomString());


        final CountDownLatch responseLatch = new CountDownLatch(1);
        String mapName = randomString();
        Runnable runnable = new MapPutRunnable(mapName);
        MemberSelector selector = new SelectAllMembers();


        service.submit(runnable, selector, new ExecutionCallback() {
            public void onResponse(Object response) {
                responseLatch.countDown();
            }

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        final CountDownLatch responseLatch = new CountDownLatch(CLUSTER_SIZE);
        final CountDownLatch completeLatch = new CountDownLatch(1);
        String mapName = randomString();
        Runnable runnable = new MapPutRunnable(mapName);
        MemberSelector selector = new SelectAllMembers();


        service.submitToMembers(runnable, selector, new MultiExecutionCallback() {
            public void onResponse(Member member, Object value) {
                responseLatch.countDown();
            }

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        IExecutorService service = client.getExecutorService(randomString());


        final CountDownLatch responseLatch = new CountDownLatch(1);
        String msg = randomString();
        Callable runnable = new AppendCallable(msg);
        MemberSelector selector = new SelectAllMembers();
        final AtomicReference<Object> result = new AtomicReference<Object>();


        service.submit(runnable, selector, new ExecutionCallback() {
            public void onResponse(Object response) {
                result.set(response);

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        final CountDownLatch responseLatch = new CountDownLatch(CLUSTER_SIZE);
        final CountDownLatch completeLatch = new CountDownLatch(1);
        final String msg = randomString();
        Callable callable = new AppendCallable(msg);
        MemberSelector selector = new SelectAllMembers();


        service.submitToMembers(callable, selector, new MultiExecutionCallback() {
            public void onResponse(Member member, Object value) {
                if (value.equals(msg + AppendCallable.APPENDAGE)) {
                    responseLatch.countDown();

View Full Code Here

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Related Classes of com.hazelcast.core.MemberSelector

com.hazelcast.client.executor.ClientExecutorServiceSubmitTest

com.hazelcast.client.executor.ClientExecutorServiceTest

com.hazelcast.executor.ExecutorServiceTest

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