Examples with TopologyEventHandler org.apache.ignite.network.TopologyEventHandler used on opensource projects

Example 1 with TopologyEventHandler

use of org.apache.ignite.network.TopologyEventHandler in project ignite-3 by apache.

the class MetaStorageManager method start.

/**
 * {@inheritDoc}
 */
@Override
public void start() {
    String[] metastorageNodes = this.locCfgMgr.configurationRegistry().getConfiguration(NodeConfiguration.KEY).metastorageNodes().value();
    Predicate<ClusterNode> metaStorageNodesContainsLocPred = clusterNode -> Arrays.asList(metastorageNodes).contains(clusterNode.name());
    if (metastorageNodes.length > 0) {
        metaStorageNodesOnStart = true;
        List<ClusterNode> metaStorageMembers = clusterNetSvc.topologyService().allMembers().stream().filter(metaStorageNodesContainsLocPred).collect(Collectors.toList());
        // without hosting metastorage, this will be rewritten in init phase https://issues.apache.org/jira/browse/IGNITE-15114
        if (metaStorageMembers.isEmpty()) {
            throw new IgniteException("Cannot start meta storage manager because there is no node in the cluster that hosts meta storage.");
        }
        // This will be rewritten in init phase https://issues.apache.org/jira/browse/IGNITE-15114
        if (metastorageNodes.length > 1) {
            throw new IgniteException("Cannot start meta storage manager because it is not allowed to start several metastorage nodes.");
        }
        storage.start();
        try {
            raftGroupServiceFut = raftMgr.prepareRaftGroup(METASTORAGE_RAFT_GROUP_NAME, metaStorageMembers, () -> new MetaStorageListener(storage));
        } catch (NodeStoppingException e) {
            throw new AssertionError("Loza was stopped before Meta Storage manager", e);
        }
        this.metaStorageSvcFut = raftGroupServiceFut.thenApply(service -> new MetaStorageServiceImpl(service, clusterNetSvc.topologyService().localMember().id()));
        if (hasMetastorageLocally(locCfgMgr)) {
            clusterNetSvc.topologyService().addEventHandler(new TopologyEventHandler() {

                @Override
                public void onAppeared(ClusterNode member) {
                // No-op.
                }

                @Override
                public void onDisappeared(ClusterNode member) {
                    metaStorageSvcFut.thenCompose(svc -> svc.closeCursors(member.id()));
                }
            });
        }
    } else {
        this.metaStorageSvcFut = new CompletableFuture<>();
    }
// TODO: IGNITE-15114 Cluster initialization flow. Here we should complete metaStorageServiceFuture.
// clusterNetSvc.messagingService().addMessageHandler((message, senderAddr, correlationId) -> {});
}

Example 2 with TopologyEventHandler

use of org.apache.ignite.network.TopologyEventHandler in project ignite-3 by apache.

the class ItScaleCubeNetworkMessagingTest method testShutdown0.

/**
 * Tests shutdown.
 *
 * @param testInfo Test info.
 * @param forceful Whether shutdown should be forceful.
 * @throws Exception If failed.
 */
private void testShutdown0(TestInfo testInfo, boolean forceful) throws Exception {
    testCluster = new Cluster(2, testInfo);
    testCluster.startAwait();
    ClusterService alice = testCluster.members.get(0);
    ClusterService bob = testCluster.members.get(1);
    String aliceName = alice.localConfiguration().getName();
    var aliceShutdownLatch = new CountDownLatch(1);
    bob.topologyService().addEventHandler(new TopologyEventHandler() {

        /**
         * {@inheritDoc}
         */
        @Override
        public void onAppeared(ClusterNode member) {
        // No-op.
        }

        /**
         * {@inheritDoc}
         */
        @Override
        public void onDisappeared(ClusterNode member) {
            if (aliceName.equals(member.name())) {
                aliceShutdownLatch.countDown();
            }
        }
    });
    if (forceful) {
        stopForcefully(alice);
    } else {
        alice.stop();
    }
    boolean aliceShutdownReceived = aliceShutdownLatch.await(forceful ? 10 : 3, TimeUnit.SECONDS);
    assertTrue(aliceShutdownReceived);
    Collection<ClusterNode> networkMembers = bob.topologyService().allMembers();
    assertEquals(1, networkMembers.size());
}