Examples with InstanceId org.neo4j.cluster.InstanceId used on opensource projects

Example 36 with InstanceId

use of org.neo4j.cluster.InstanceId in project neo4j by neo4j.

the class HeartbeatContextTest method setup.

@Before
public void setup() {
    Map<InstanceId, URI> members = new HashMap<InstanceId, URI>();
    for (int i = 0; i < instanceIds.length; i++) {
        members.put(instanceIds[i], URI.create(initialHosts[i]));
    }
    ClusterConfiguration config = new ClusterConfiguration("clusterName", NullLogProvider.getInstance(), initialHosts);
    config.setMembers(members);
    context = mock(ClusterContext.class);
    Config configuration = mock(Config.class);
    when(configuration.get(ClusterSettings.max_acceptors)).thenReturn(10);
    when(context.getConfiguration()).thenReturn(config);
    when(context.getMyId()).thenReturn(instanceIds[0]);
    MultiPaxosContext context = new MultiPaxosContext(instanceIds[0], Iterables.iterable(new ElectionRole("coordinator")), config, Mockito.mock(Executor.class), NullLogProvider.getInstance(), Mockito.mock(ObjectInputStreamFactory.class), Mockito.mock(ObjectOutputStreamFactory.class), Mockito.mock(AcceptorInstanceStore.class), Mockito.mock(Timeouts.class), mock(ElectionCredentialsProvider.class), configuration);
    toTest = context.getHeartbeatContext();
}

Example 37 with InstanceId

use of org.neo4j.cluster.InstanceId in project neo4j by neo4j.

the class HeartbeatContextTest method testOneInstanceComesAliveAfterAllOtherFail.

/**
     * Tests the following scenario:
     * Instance A (the one this test simulates) sees instance C down. B agrees.
     * Instance A sees instance B down.
     * Instance C starts responding again.
     * Instance A should now consider C alive.
     */
@Test
public void testOneInstanceComesAliveAfterAllOtherFail() {
    InstanceId instanceB = instanceIds[1];
    InstanceId instanceC = instanceIds[2];
    // Both A and B consider C down
    toTest.suspect(instanceC);
    toTest.suspicions(instanceB, Collections.singleton(instanceC));
    assertTrue(toTest.isFailed(instanceC));
    // A sees B as down
    toTest.suspect(instanceB);
    assertTrue(toTest.isFailed(instanceB));
    // C starts responding again
    assertTrue(toTest.alive(instanceC));
    assertFalse(toTest.isFailed(instanceC));
}

Example 38 with InstanceId

use of org.neo4j.cluster.InstanceId in project neo4j by neo4j.

the class HeartbeatIAmAliveProcessorTest method shouldNotGenerateHeartbeatsForSuspicions.

@Test
public void shouldNotGenerateHeartbeatsForSuspicions() throws Exception {
    URI to = URI.create("ha://1");
    // GIVEN
    MessageHolder outgoing = mock(MessageHolder.class);
    ClusterContext mockContext = mock(ClusterContext.class);
    ClusterConfiguration mockConfiguration = mock(ClusterConfiguration.class);
    when(mockConfiguration.getMembers()).thenReturn(new HashMap<InstanceId, URI>() {

        {
            put(new InstanceId(1), URI.create("ha://1"));
            put(new InstanceId(2), URI.create("ha://2"));
        }
    });
    when(mockContext.getConfiguration()).thenReturn(mockConfiguration);
    HeartbeatIAmAliveProcessor processor = new HeartbeatIAmAliveProcessor(outgoing, mockContext);
    Message incoming = Message.to(HeartbeatMessage.suspicions, to).setHeader(Message.FROM, to.toASCIIString()).setHeader(Message.INSTANCE_ID, "1");
    assertEquals(HeartbeatMessage.suspicions, incoming.getMessageType());
    // WHEN
    processor.process(incoming);
    // THEN
    verifyZeroInteractions(outgoing);
}

Example 39 with InstanceId

use of org.neo4j.cluster.InstanceId in project neo4j by neo4j.

the class HeartbeatIAmAliveProcessorTest method shouldNotGenerateHeartbeatsForHeartbeats.

@Test
public void shouldNotGenerateHeartbeatsForHeartbeats() throws Exception {
    URI to = URI.create("ha://1");
    // GIVEN
    MessageHolder outgoing = mock(MessageHolder.class);
    ClusterContext mockContext = mock(ClusterContext.class);
    ClusterConfiguration mockConfiguration = mock(ClusterConfiguration.class);
    when(mockConfiguration.getMembers()).thenReturn(new HashMap<InstanceId, URI>() {

        {
            put(new InstanceId(1), URI.create("ha://1"));
            put(new InstanceId(2), URI.create("ha://2"));
        }
    });
    when(mockContext.getConfiguration()).thenReturn(mockConfiguration);
    HeartbeatIAmAliveProcessor processor = new HeartbeatIAmAliveProcessor(outgoing, mockContext);
    Message incoming = Message.to(HeartbeatMessage.i_am_alive, to).setHeader(Message.FROM, to.toASCIIString()).setHeader(Message.INSTANCE_ID, "1");
    assertEquals(HeartbeatMessage.i_am_alive, incoming.getMessageType());
    // WHEN
    processor.process(incoming);
    // THEN
    verifyZeroInteractions(outgoing);
}

Example 40 with InstanceId

use of org.neo4j.cluster.InstanceId in project neo4j by neo4j.

the class HeartbeatIAmAliveProcessorTest method shouldRevertToInverseUriLookupIfNoInstanceIdHeader.

/*
     * This test is required to ensure compatibility with the previous version. If we fail on non existing INSTANCE_ID
     * header then heartbeats may pause during rolling upgrades and cause timeouts, which we don't want.
     */
@Test
public void shouldRevertToInverseUriLookupIfNoInstanceIdHeader() throws Exception {
    final List<Message> sentOut = new LinkedList<Message>();
    String instance2UriString = "ha://2";
    // Given
    MessageHolder holder = mock(MessageHolder.class);
    // The sender, which adds messages outgoing to the list above.
    doAnswer(new Answer() {

        @Override
        public Object answer(InvocationOnMock invocation) throws Throwable {
            sentOut.add((Message) invocation.getArguments()[0]);
            return null;
        }
    }).when(holder).offer(Matchers.<Message<MessageType>>any());
    ClusterContext mockContext = mock(ClusterContext.class);
    ClusterConfiguration mockConfiguration = mock(ClusterConfiguration.class);
    when(mockConfiguration.getIdForUri(URI.create(instance2UriString))).thenReturn(new InstanceId(2));
    when(mockConfiguration.getMembers()).thenReturn(new HashMap<InstanceId, URI>() {

        {
            put(new InstanceId(1), URI.create("ha://1"));
            put(new InstanceId(2), URI.create("ha://2"));
        }
    });
    when(mockContext.getConfiguration()).thenReturn(mockConfiguration);
    HeartbeatIAmAliveProcessor processor = new HeartbeatIAmAliveProcessor(holder, mockContext);
    Message incoming = Message.to(mock(MessageType.class), URI.create("ha://someAwesomeInstanceInJapan")).setHeader(Message.FROM, instance2UriString);
    // WHEN
    processor.process(incoming);
    // THEN
    assertEquals(1, sentOut.size());
    assertEquals(HeartbeatMessage.i_am_alive, sentOut.get(0).getMessageType());
    assertEquals(new InstanceId(2), ((HeartbeatMessage.IAmAliveState) sentOut.get(0).getPayload()).getServer());
}