Examples with ClusterService io.atomix.cluster.ClusterService used on opensource projects

Example 1 with ClusterService

use of io.atomix.cluster.ClusterService in project atomix by atomix.

the class RaftPartitionGroup method buildPartitions.

private Collection<PartitionMetadata> buildPartitions(ClusterService clusterService) {
    int partitionSize = this.partitionSize;
    if (partitionSize == 0) {
        partitionSize = clusterService.getNodes().size();
    }
    List<NodeId> sorted = new ArrayList<>(clusterService.getNodes().stream().filter(node -> node.type() == Node.Type.CORE).map(Node::id).collect(Collectors.toSet()));
    Collections.sort(sorted);
    int length = sorted.size();
    int count = Math.min(partitionSize, length);
    Set<PartitionMetadata> metadata = Sets.newHashSet();
    for (int i = 0; i < partitions.size(); i++) {
        PartitionId partitionId = sortedPartitionIds.get(i);
        Set<NodeId> set = new HashSet<>(count);
        for (int j = 0; j < count; j++) {
            set.add(sorted.get((i + j) % length));
        }
        metadata.add(new PartitionMetadata(partitionId, set));
    }
    return metadata;
}

Example 2 with ClusterService

use of io.atomix.cluster.ClusterService in project atomix by atomix.

the class Atomix method start.

/**
 * Starts the Atomix instance.
 * <p>
 * The returned future will be completed once this instance completes startup. Note that in order to complete startup,
 * all partitions must be able to form. For Raft partitions, that requires that a majority of the nodes in each
 * partition be started concurrently.
 *
 * @return a future to be completed once the instance has completed startup
 */
@Override
public synchronized CompletableFuture<Atomix> start() {
    if (closeFuture != null) {
        return Futures.exceptionalFuture(new IllegalStateException("Atomix instance " + (closeFuture.isDone() ? "shutdown" : "shutting down")));
    }
    if (openFuture != null) {
        return openFuture;
    }
    openFuture = messagingService.start().thenComposeAsync(v -> metadataService.start(), context).thenComposeAsync(v -> clusterService.start(), context).thenComposeAsync(v -> clusterMessagingService.start(), context).thenComposeAsync(v -> clusterEventingService.start(), context).thenComposeAsync(v -> systemPartitionGroup.open(new DefaultPartitionManagementService(metadataService, clusterService, clusterMessagingService, primitiveTypes, null, null)), context).thenComposeAsync(v -> {
        ManagedPrimaryElectionService electionService = new DefaultPrimaryElectionService(systemPartitionGroup, RaftProtocol.builder().withMinTimeout(Duration.ofMillis(250)).withMaxTimeout(Duration.ofSeconds(5)).withReadConsistency(ReadConsistency.LINEARIZABLE).withCommunicationStrategy(CommunicationStrategy.LEADER).withRecoveryStrategy(Recovery.RECOVER).withMaxRetries(5).build());
        ManagedSessionIdService sessionIdService = new IdGeneratorSessionIdService(systemPartitionGroup);
        return electionService.start().thenComposeAsync(v2 -> sessionIdService.start(), context).thenApply(v2 -> new DefaultPartitionManagementService(metadataService, clusterService, clusterMessagingService, primitiveTypes, electionService, sessionIdService));
    }, context).thenComposeAsync(partitionManagementService -> partitions.open((PartitionManagementService) partitionManagementService), context).thenComposeAsync(v -> primitives.start(), context).thenApplyAsync(v -> {
        metadataService.addNode(clusterService.getLocalNode());
        started.set(true);
        LOGGER.info("Started");
        return this;
    }, context);
    return openFuture;
}

Example 3 with ClusterService

use of io.atomix.cluster.ClusterService in project atomix by atomix.

the class DefaultClusterEventingServiceTest method testClusterEventService.

@Test
public void testClusterEventService() throws Exception {
    TestMessagingServiceFactory factory = new TestMessagingServiceFactory();
    ClusterMetadata clusterMetadata = buildClusterMetadata(1, 1, 2, 3);
    Node localNode1 = buildNode(1, Node.Type.CORE);
    MessagingService messagingService1 = factory.newMessagingService(localNode1.endpoint()).start().join();
    ClusterService clusterService1 = new DefaultClusterService(localNode1, new TestClusterMetadataService(clusterMetadata), messagingService1).start().join();
    ClusterEventingService eventService1 = new DefaultClusterEventingService(clusterService1, messagingService1).start().join();
    Node localNode2 = buildNode(2, Node.Type.CORE);
    MessagingService messagingService2 = factory.newMessagingService(localNode2.endpoint()).start().join();
    ClusterService clusterService2 = new DefaultClusterService(localNode2, new TestClusterMetadataService(clusterMetadata), messagingService2).start().join();
    ClusterEventingService eventService2 = new DefaultClusterEventingService(clusterService2, messagingService2).start().join();
    Node localNode3 = buildNode(3, Node.Type.CORE);
    MessagingService messagingService3 = factory.newMessagingService(localNode3.endpoint()).start().join();
    ClusterService clusterService3 = new DefaultClusterService(localNode3, new TestClusterMetadataService(clusterMetadata), messagingService3).start().join();
    ClusterEventingService eventService3 = new DefaultClusterEventingService(clusterService3, messagingService3).start().join();
    Thread.sleep(100);
    Set<Integer> events = new CopyOnWriteArraySet<>();
    eventService1.<String>subscribe("test1", SERIALIZER::decode, message -> {
        assertEquals(message, "Hello world!");
        events.add(1);
    }, MoreExecutors.directExecutor()).join();
    eventService2.<String>subscribe("test1", SERIALIZER::decode, message -> {
        assertEquals(message, "Hello world!");
        events.add(2);
    }, MoreExecutors.directExecutor()).join();
    eventService2.<String>subscribe("test1", SERIALIZER::decode, message -> {
        assertEquals(message, "Hello world!");
        events.add(3);
    }, MoreExecutors.directExecutor()).join();
    eventService3.broadcast("test1", "Hello world!", SERIALIZER::encode);
    Thread.sleep(100);
    assertEquals(3, events.size());
    events.clear();
    eventService3.unicast("test1", "Hello world!");
    Thread.sleep(100);
    assertEquals(1, events.size());
    assertTrue(events.contains(3));
    events.clear();
    eventService3.unicast("test1", "Hello world!");
    Thread.sleep(100);
    assertEquals(1, events.size());
    assertTrue(events.contains(1));
    events.clear();
    eventService3.unicast("test1", "Hello world!");
    Thread.sleep(100);
    assertEquals(1, events.size());
    assertTrue(events.contains(2));
    events.clear();
    eventService3.unicast("test1", "Hello world!");
    Thread.sleep(100);
    assertEquals(1, events.size());
    assertTrue(events.contains(3));
    events.clear();
    eventService1.<String, String>subscribe("test2", SERIALIZER::decode, message -> {
        events.add(1);
        return message;
    }, SERIALIZER::encode, MoreExecutors.directExecutor()).join();
    eventService2.<String, String>subscribe("test2", SERIALIZER::decode, message -> {
        events.add(2);
        return message;
    }, SERIALIZER::encode, MoreExecutors.directExecutor()).join();
    assertEquals("Hello world!", eventService3.send("test2", "Hello world!").join());
    assertEquals(1, events.size());
    assertTrue(events.contains(1));
    events.clear();
    assertEquals("Hello world!", eventService3.send("test2", "Hello world!").join());
    assertEquals(1, events.size());
    assertTrue(events.contains(2));
    events.clear();
    assertEquals("Hello world!", eventService3.send("test2", "Hello world!").join());
    assertEquals(1, events.size());
    assertTrue(events.contains(1));
}