Examples with Node com.hazelcast.instance.Node used on opensource projects

Example 41 with Node

use of com.hazelcast.instance.Node in project hazelcast by hazelcast.

the class SplitBrainHandlerTest method testClusterMerge_when_split_not_detected_by_master.

private void testClusterMerge_when_split_not_detected_by_master(boolean multicastEnabled) throws InterruptedException {
    Config config = new Config();
    String groupName = generateRandomString(10);
    config.getGroupConfig().setName(groupName);
    config.setProperty(GroupProperty.MERGE_FIRST_RUN_DELAY_SECONDS.getName(), "10");
    config.setProperty(GroupProperty.MERGE_NEXT_RUN_DELAY_SECONDS.getName(), "10");
    config.setProperty(GroupProperty.MAX_NO_HEARTBEAT_SECONDS.getName(), "15");
    config.setProperty(GroupProperty.MAX_JOIN_SECONDS.getName(), "10");
    config.setProperty(GroupProperty.MAX_JOIN_MERGE_TARGET_SECONDS.getName(), "10");
    NetworkConfig networkConfig = config.getNetworkConfig();
    networkConfig.getJoin().getMulticastConfig().setEnabled(multicastEnabled);
    networkConfig.getJoin().getTcpIpConfig().setEnabled(!multicastEnabled).addMember("127.0.0.1");
    HazelcastInstance hz1 = newHazelcastInstance(config, "test-node1", new FirewallingNodeContext());
    HazelcastInstance hz2 = newHazelcastInstance(config, "test-node2", new FirewallingNodeContext());
    HazelcastInstance hz3 = newHazelcastInstance(config, "test-node3", new FirewallingNodeContext());
    final Node n1 = TestUtil.getNode(hz1);
    Node n2 = TestUtil.getNode(hz2);
    Node n3 = TestUtil.getNode(hz3);
    final CountDownLatch splitLatch = new CountDownLatch(2);
    MembershipAdapter membershipAdapter = new MembershipAdapter() {

        @Override
        public void memberRemoved(MembershipEvent event) {
            if (n1.getLocalMember().equals(event.getMember())) {
                splitLatch.countDown();
            }
        }
    };
    hz2.getCluster().addMembershipListener(membershipAdapter);
    hz3.getCluster().addMembershipListener(membershipAdapter);
    final CountDownLatch mergeLatch = new CountDownLatch(1);
    hz1.getLifecycleService().addLifecycleListener(new MergedEventLifeCycleListener(mergeLatch));
    FirewallingTcpIpConnectionManager cm1 = getFireWalledConnectionManager(hz1);
    FirewallingTcpIpConnectionManager cm2 = getFireWalledConnectionManager(hz2);
    FirewallingTcpIpConnectionManager cm3 = getFireWalledConnectionManager(hz3);
    // block n2 & n3 on n1
    cm1.block(n2.address);
    cm1.block(n3.address);
    // remove and block n1 on n2 & n3
    n2.clusterService.removeAddress(n1.address, null);
    n3.clusterService.removeAddress(n1.address, null);
    cm2.block(n1.address);
    cm3.block(n1.address);
    assertTrue(splitLatch.await(120, TimeUnit.SECONDS));
    assertEquals(3, hz1.getCluster().getMembers().size());
    assertEquals(2, hz2.getCluster().getMembers().size());
    assertEquals(2, hz3.getCluster().getMembers().size());
    // unblock n2 on n1 and n1 on n2 & n3
    // n1 still blocks access to n3
    cm1.unblock(n2.address);
    cm2.unblock(n1.address);
    cm3.unblock(n1.address);
    assertTrue(mergeLatch.await(120, TimeUnit.SECONDS));
    assertEquals(3, hz1.getCluster().getMembers().size());
    assertEquals(3, hz2.getCluster().getMembers().size());
    assertEquals(3, hz3.getCluster().getMembers().size());
    assertEquals(n2.getThisAddress(), n1.getMasterAddress());
    assertEquals(n2.getThisAddress(), n2.getMasterAddress());
    assertEquals(n2.getThisAddress(), n3.getMasterAddress());
}

Example 42 with Node

use of com.hazelcast.instance.Node in project hazelcast by hazelcast.

the class MemberListTest method testOutOfSyncMemberList.

/*
     * Sets up a situation where node3 removes the master and sets node2 as the
     * master but none of the other nodes do. This means that node3 thinks node2
     * is master but node2 thinks node1 is master.
     */
@Test
public void testOutOfSyncMemberList() throws Exception {
    List<HazelcastInstance> instanceList = buildInstances(3, 25701);
    final HazelcastInstance h1 = instanceList.get(0);
    final HazelcastInstance h2 = instanceList.get(1);
    final HazelcastInstance h3 = instanceList.get(2);
    // All three nodes join into one cluster
    assertClusterSizeEventually(3, h1);
    assertClusterSizeEventually(3, h2);
    assertClusterSizeEventually(3, h3);
    // This simulates each node reading from the other nodes in the list at regular intervals
    // This prevents the heart beat code from timing out
    final HazelcastInstance[] instances = new HazelcastInstance[] { h1, h2, h3 };
    final AtomicBoolean doingWork = new AtomicBoolean(true);
    Thread[] workThreads = new Thread[instances.length];
    for (int i = 0; i < instances.length; i++) {
        final int threadNum = i;
        workThreads[threadNum] = new Thread(new Runnable() {

            public void run() {
                while (doingWork.get()) {
                    final HazelcastInstance hz = instances[threadNum];
                    Set<Member> members = new HashSet<Member>(hz.getCluster().getMembers());
                    members.remove(hz.getCluster().getLocalMember());
                    final Map<Member, Future<String>> futures = hz.getExecutorService("test").submitToMembers(new PingCallable(), members);
                    for (Future<String> f : futures.values()) {
                        try {
                            f.get();
                        } catch (MemberLeftException ignored) {
                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                    }
                    sleepSeconds(2);
                }
            }
        });
        workThreads[threadNum].start();
    }
    final Node n3 = TestUtil.getNode(h3);
    n3.clusterService.removeAddress(h1.getCluster().getLocalMember().getAddress(), null);
    // Give the cluster some time to figure things out. The merge and heartbeat code should have kicked in by this point
    sleepSeconds(30);
    doingWork.set(false);
    for (Thread t : workThreads) {
        t.join();
    }
    assertClusterSize(3, h1);
    assertClusterSize(3, h2);
    assertClusterSize(3, h3);
}

Example 43 with Node

use of com.hazelcast.instance.Node in project hazelcast by hazelcast.

the class MemberListTest method testOutOfSyncMemberListTwoMasters.

/*
     * Sets up a situation where the member list is out of order on node2. Both
     * node2 and node1 think they are masters and both think each other are in
     * their clusters.
     */
@Test
public void testOutOfSyncMemberListTwoMasters() throws Exception {
    List<HazelcastInstance> instanceList = buildInstances(3, 35701);
    final HazelcastInstance h1 = instanceList.get(0);
    final HazelcastInstance h2 = instanceList.get(1);
    final HazelcastInstance h3 = instanceList.get(2);
    final MemberImpl m1 = (MemberImpl) h1.getCluster().getLocalMember();
    final MemberImpl m2 = (MemberImpl) h2.getCluster().getLocalMember();
    final MemberImpl m3 = (MemberImpl) h3.getCluster().getLocalMember();
    // All three nodes join into one cluster
    assertClusterSizeEventually(3, h1);
    assertClusterSizeEventually(3, h2);
    assertClusterSizeEventually(3, h3);
    final Node n2 = TestUtil.getNode(h2);
    // Simulates node2 getting an out of order member list. That causes node2 to think it's the master.
    List<MemberInfo> members = new ArrayList<MemberInfo>();
    members.add(new MemberInfo(m2.getAddress(), m2.getUuid(), Collections.<String, Object>emptyMap(), n2.getVersion()));
    members.add(new MemberInfo(m3.getAddress(), m3.getUuid(), Collections.<String, Object>emptyMap(), n2.getVersion()));
    members.add(new MemberInfo(m1.getAddress(), m1.getUuid(), Collections.<String, Object>emptyMap(), n2.getVersion()));
    n2.clusterService.updateMembers(members, n2.getMasterAddress());
    n2.setMasterAddress(m2.getAddress());
    // Give the cluster some time to figure things out. The merge and heartbeat code should have kicked in by this point
    sleepSeconds(30);
    assertMasterEquals(m1, h1);
    assertMasterEquals(m1, h2);
    assertMasterEquals(m1, h3);
    assertClusterSize(3, h1);
    assertClusterSize(3, h2);
    assertClusterSize(3, h3);
}

Example 44 with Node

use of com.hazelcast.instance.Node in project hazelcast by hazelcast.

the class MemberListTest method testSameMasterDifferentMemberList.

/*
     * Sets up situation where all nodes have the same master, but node 2's list
     * doesn't contain node 3.
     */
@Test
public void testSameMasterDifferentMemberList() throws Exception {
    List<HazelcastInstance> instanceList = buildInstances(3, 45701);
    final HazelcastInstance h1 = instanceList.get(0);
    final HazelcastInstance h2 = instanceList.get(1);
    final HazelcastInstance h3 = instanceList.get(2);
    final MemberImpl m1 = (MemberImpl) h1.getCluster().getLocalMember();
    final MemberImpl m2 = (MemberImpl) h2.getCluster().getLocalMember();
    // All three nodes join into one cluster
    assertClusterSizeEventually(3, h1);
    assertClusterSizeEventually(3, h2);
    assertClusterSizeEventually(3, h3);
    final Node n2 = TestUtil.getNode(h2);
    // Simulates node2 getting an out of order member list. That causes node2 to think it's the master.
    List<MemberInfo> members = new ArrayList<MemberInfo>();
    members.add(new MemberInfo(m1.getAddress(), m1.getUuid(), Collections.<String, Object>emptyMap(), n2.getVersion()));
    members.add(new MemberInfo(m2.getAddress(), m2.getUuid(), Collections.<String, Object>emptyMap(), n2.getVersion()));
    n2.clusterService.updateMembers(members, n2.getMasterAddress());
    // Give the cluster some time to figure things out. The merge and heartbeat code should have kicked in by this point
    sleepSeconds(30);
    assertMasterEquals(m1, h1);
    assertMasterEquals(m1, h2);
    assertMasterEquals(m1, h3);
    assertClusterSize(3, h1);
    assertClusterSize(3, h2);
    assertClusterSize(3, h3);
}

Example 45 with Node

use of com.hazelcast.instance.Node in project hazelcast by hazelcast.

the class ConnectedClientOperationTest method testGetConnectedClientsOperation_WhenMoreThanZeroClientConnects.

@Test
public void testGetConnectedClientsOperation_WhenMoreThanZeroClientConnects() throws Exception {
    HazelcastInstance instance = factory.newHazelcastInstance();
    factory.newHazelcastClient();
    factory.newHazelcastClient();
    Node node = TestUtil.getNode(instance);
    Operation operation = new GetConnectedClientsOperation();
    OperationService operationService = node.nodeEngine.getOperationService();
    Future<Map<String, ClientType>> future = operationService.invokeOnTarget(ClientEngineImpl.SERVICE_NAME, operation, node.address);
    Map<String, ClientType> clients = future.get();
    assertEquals(2, clients.size());
}