Examples with Monitors org.neo4j.kernel.monitoring.Monitors used on opensource projects

Example 36 with Monitors

use of org.neo4j.kernel.monitoring.Monitors in project neo4j by neo4j.

the class MultiPaxosServer method start.

public void start() throws IOException {
    broadcastSerializer = new AtomicBroadcastSerializer(new ObjectStreamFactory(), new ObjectStreamFactory());
    final LifeSupport life = new LifeSupport();
    try {
        MessageTimeoutStrategy timeoutStrategy = new MessageTimeoutStrategy(new FixedTimeoutStrategy(5000)).timeout(HeartbeatMessage.sendHeartbeat, 200);
        Monitors monitors = new Monitors();
        NetworkedServerFactory serverFactory = new NetworkedServerFactory(life, new MultiPaxosServerFactory(new ClusterConfiguration("default", NullLogProvider.getInstance()), NullLogProvider.getInstance(), monitors.newMonitor(StateMachines.Monitor.class)), timeoutStrategy, NullLogProvider.getInstance(), new ObjectStreamFactory(), new ObjectStreamFactory(), monitors.newMonitor(NetworkReceiver.Monitor.class), monitors.newMonitor(NetworkSender.Monitor.class), monitors.newMonitor(NamedThreadFactory.Monitor.class));
        ServerIdElectionCredentialsProvider electionCredentialsProvider = new ServerIdElectionCredentialsProvider();
        server = serverFactory.newNetworkedServer(Config.embeddedDefaults(), new InMemoryAcceptorInstanceStore(), electionCredentialsProvider);
        server.addBindingListener(electionCredentialsProvider);
        server.addBindingListener(new BindingListener() {

            @Override
            public void listeningAt(URI me) {
                System.out.println("Listening at:" + me);
            }
        });
        cluster = server.newClient(Cluster.class);
        cluster.addClusterListener(new ClusterListener() {

            @Override
            public void enteredCluster(ClusterConfiguration clusterConfiguration) {
                System.out.println("Entered cluster:" + clusterConfiguration);
            }

            @Override
            public void joinedCluster(InstanceId instanceId, URI member) {
                System.out.println("Joined cluster:" + instanceId + " (at URI " + member + ")");
            }

            @Override
            public void leftCluster(InstanceId instanceId, URI member) {
                System.out.println("Left cluster:" + instanceId);
            }

            @Override
            public void leftCluster() {
                System.out.println("Left cluster");
            }

            @Override
            public void elected(String role, InstanceId instanceId, URI electedMember) {
                System.out.println(instanceId + " at URI " + electedMember + " was elected as " + role);
            }

            @Override
            public void unelected(String role, InstanceId instanceId, URI electedMember) {
                System.out.println(instanceId + " at URI " + electedMember + " was removed from " + role);
            }
        });
        Heartbeat heartbeat = server.newClient(Heartbeat.class);
        heartbeat.addHeartbeatListener(new HeartbeatListener() {

            @Override
            public void failed(InstanceId server) {
                System.out.println(server + " failed");
            }

            @Override
            public void alive(InstanceId server) {
                System.out.println(server + " alive");
            }
        });
        broadcast = server.newClient(AtomicBroadcast.class);
        broadcast.addAtomicBroadcastListener(new AtomicBroadcastListener() {

            @Override
            public void receive(Payload value) {
                try {
                    System.out.println(broadcastSerializer.receive(value));
                } catch (IOException e) {
                    e.printStackTrace();
                } catch (ClassNotFoundException e) {
                    e.printStackTrace();
                }
            }
        });
        life.start();
        String command;
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        while (!(command = reader.readLine()).equals("quit")) {
            String[] arguments = command.split(" ");
            Method method = getCommandMethod(arguments[0]);
            if (method != null) {
                String[] realArgs = new String[arguments.length - 1];
                System.arraycopy(arguments, 1, realArgs, 0, realArgs.length);
                try {
                    method.invoke(this, (Object[]) realArgs);
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                } catch (IllegalArgumentException e) {
                    e.printStackTrace();
                } catch (InvocationTargetException e) {
                    e.printStackTrace();
                }
            }
        }
        cluster.leave();
    } finally {
        life.shutdown();
        System.out.println("Done");
    }
}

Example 37 with Monitors

use of org.neo4j.kernel.monitoring.Monitors in project neo4j by neo4j.

the class MultiPaxosTest method testFailure.

@Test
public void testFailure() throws Exception {
    ScriptableNetworkFailureLatencyStrategy networkLatency = new ScriptableNetworkFailureLatencyStrategy();
    NetworkMock network = new NetworkMock(NullLogService.getInstance(), new Monitors(), 50, new MultipleFailureLatencyStrategy(networkLatency), new MessageTimeoutStrategy(new FixedTimeoutStrategy(1000)));
    List<TestProtocolServer> nodes = new ArrayList<TestProtocolServer>();
    TestProtocolServer server = network.addServer(1, URI.create("cluster://server1"));
    server.newClient(Cluster.class).create("default");
    network.tickUntilDone();
    nodes.add(server);
    for (int i = 1; i < 3; i++) {
        TestProtocolServer protocolServer = network.addServer(i + 1, new URI("cluster://server" + (i + 1)));
        protocolServer.newClient(Cluster.class).join("default", new URI("cluster://server1"));
        network.tick(10);
        nodes.add(protocolServer);
    }
    final AtomicBroadcast atomicBroadcast = nodes.get(0).newClient(AtomicBroadcast.class);
    ObjectStreamFactory objectStreamFactory = new ObjectStreamFactory();
    final AtomicBroadcastSerializer serializer = new AtomicBroadcastSerializer(objectStreamFactory, objectStreamFactory);
    atomicBroadcast.broadcast(serializer.broadcast(new DaPayload()));
    networkLatency.nodeIsDown("cluster://server2");
    networkLatency.nodeIsDown("cluster://server3");
    atomicBroadcast.broadcast(serializer.broadcast(new DaPayload()));
    network.tick(100);
    networkLatency.nodeIsUp("cluster://server3");
    network.tick(1000);
    for (TestProtocolServer node : nodes) {
        node.newClient(Cluster.class).leave();
        network.tick(10);
    }
}

Example 38 with Monitors

use of org.neo4j.kernel.monitoring.Monitors in project neo4j by neo4j.

the class DefaultMasterImplSPITest method flushStoreFilesWithCorrectCheckpointTriggerName.

@Test
public void flushStoreFilesWithCorrectCheckpointTriggerName() throws IOException {
    CheckPointer checkPointer = mock(CheckPointer.class);
    NeoStoreDataSource dataSource = mock(NeoStoreDataSource.class);
    when(dataSource.listStoreFiles(anyBoolean())).thenReturn(Iterators.emptyIterator());
    DefaultMasterImplSPI master = new DefaultMasterImplSPI(mock(GraphDatabaseAPI.class, RETURNS_MOCKS), mock(FileSystemAbstraction.class), new Monitors(), mock(LabelTokenHolder.class), mock(PropertyKeyTokenHolder.class), mock(RelationshipTypeTokenHolder.class), mock(IdGeneratorFactory.class), mock(TransactionCommitProcess.class), checkPointer, mock(TransactionIdStore.class), mock(LogicalTransactionStore.class), dataSource, mock(PageCache.class), new StoreCopyCheckPointMutex());
    master.flushStoresAndStreamStoreFiles(mock(StoreWriter.class));
    TriggerInfo expectedTriggerInfo = new SimpleTriggerInfo(DefaultMasterImplSPI.STORE_COPY_CHECKPOINT_TRIGGER);
    verify(checkPointer).tryCheckPoint(expectedTriggerInfo);
}

Example 39 with Monitors

use of org.neo4j.kernel.monitoring.Monitors in project neo4j by neo4j.

the class RaftMachineTest method shouldMonitorLeaderNotFound.

@Test
public void shouldMonitorLeaderNotFound() throws Exception {
    // Given
    ControlledRenewableTimeoutService timeouts = new ControlledRenewableTimeoutService();
    Monitors monitors = new Monitors();
    LeaderNotFoundMonitor leaderNotFoundMonitor = new StubLeaderNotFoundMonitor();
    monitors.addMonitorListener(leaderNotFoundMonitor);
    RaftMachine raft = new RaftMachineBuilder(myself, 3, RaftTestMemberSetBuilder.INSTANCE).timeoutService(timeouts).monitors(monitors).build();
    raft.installCoreState(new RaftCoreState(new MembershipEntry(0, asSet(myself, member1, member2))));
    try {
        // When
        // There is no leader
        raft.getLeader();
        fail("Should have thrown exception");
    }// Then
     catch (NoLeaderFoundException e) {
        // expected
        assertEquals(1, leaderNotFoundMonitor.leaderNotFoundExceptions());
    }
}

Example 40 with Monitors

use of org.neo4j.kernel.monitoring.Monitors in project neo4j by neo4j.

the class MonitoredRaftLogTest method shouldMonitorAppendIndexAndCommitIndex.

@Test
public void shouldMonitorAppendIndexAndCommitIndex() throws Exception {
    // Given
    Monitors monitors = new Monitors();
    StubRaftLogAppendIndexMonitor appendMonitor = new StubRaftLogAppendIndexMonitor();
    monitors.addMonitorListener(appendMonitor);
    StubRaftLogCommitIndexMonitor commitMonitor = new StubRaftLogCommitIndexMonitor();
    monitors.addMonitorListener(commitMonitor);
    MonitoredRaftLog log = new MonitoredRaftLog(new InMemoryRaftLog(), monitors);
    // When
    log.append(new RaftLogEntry(0, ReplicatedInteger.valueOf(1)));
    log.append(new RaftLogEntry(0, ReplicatedInteger.valueOf(1)));
    assertEquals(1, appendMonitor.appendIndex());
    assertEquals(0, commitMonitor.commitIndex());
    log.truncate(1);
    assertEquals(0, appendMonitor.appendIndex());
}