Examples with Payload org.neo4j.cluster.protocol.atomicbroadcast.Payload used on opensource projects

Example 1 with Payload

use of org.neo4j.cluster.protocol.atomicbroadcast.Payload in project neo4j by neo4j.

the class HardKillIT method testMasterSwitchHappensOnKillMinus9.

@Test
public void testMasterSwitchHappensOnKillMinus9() throws Exception {
    Process proc = null;
    HighlyAvailableGraphDatabase dbWithId2 = null, dbWithId3 = null, oldMaster = null;
    try {
        proc = run(1);
        dbWithId2 = startDb(2, path(2));
        dbWithId3 = startDb(3, path(3));
        waitUntilAllProperlyAvailable(dbWithId2, 1, MASTER, 2, SLAVE, 3, SLAVE);
        waitUntilAllProperlyAvailable(dbWithId3, 1, MASTER, 2, SLAVE, 3, SLAVE);
        final CountDownLatch newMasterAvailableLatch = new CountDownLatch(1);
        dbWithId2.getDependencyResolver().resolveDependency(ClusterClient.class).addAtomicBroadcastListener(new AtomicBroadcastListener() {

            @Override
            public void receive(Payload value) {
                try {
                    Object event = new AtomicBroadcastSerializer(new ObjectStreamFactory(), new ObjectStreamFactory()).receive(value);
                    if (event instanceof MemberIsAvailable) {
                        if (HighAvailabilityModeSwitcher.MASTER.equals(((MemberIsAvailable) event).getRole())) {
                            newMasterAvailableLatch.countDown();
                        }
                    }
                } catch (Exception e) {
                    fail(e.toString());
                }
            }
        });
        proc.destroy();
        proc = null;
        assertTrue(newMasterAvailableLatch.await(60, SECONDS));
        assertTrue(dbWithId2.isMaster());
        assertTrue(!dbWithId3.isMaster());
        // Ensure that everyone has marked the killed instance as failed, otherwise it cannot rejoin
        waitUntilAllProperlyAvailable(dbWithId2, 1, UNKNOWN, 2, MASTER, 3, SLAVE);
        waitUntilAllProperlyAvailable(dbWithId3, 1, UNKNOWN, 2, MASTER, 3, SLAVE);
        oldMaster = startDb(1, path(1));
        long oldMasterNode = createNamedNode(oldMaster, "Old master");
        assertEquals(oldMasterNode, getNamedNode(dbWithId2, "Old master"));
    } finally {
        if (proc != null) {
            proc.destroy();
        }
        if (oldMaster != null) {
            oldMaster.shutdown();
        }
        if (dbWithId2 != null) {
            dbWithId2.shutdown();
        }
        if (dbWithId3 != null) {
            dbWithId3.shutdown();
        }
    }
}

Example 2 with Payload

use of org.neo4j.cluster.protocol.atomicbroadcast.Payload in project neo4j by neo4j.

the class PaxosInstance method toString.

@Override
public String toString() {
    try {
        Object toStringValue1 = null;
        if (value_1 != null) {
            if (value_1 instanceof Payload) {
                toStringValue1 = new AtomicBroadcastSerializer().receive((Payload) value_1).toString();
            } else {
                toStringValue1 = value_1.toString();
            }
        }
        Object toStringValue2 = null;
        if (value_2 != null) {
            if (value_2 instanceof Payload) {
                toStringValue2 = new AtomicBroadcastSerializer().receive((Payload) value_2).toString();
            } else {
                toStringValue2 = value_2.toString();
            }
        }
        return "[id:" + id + " state:" + state.name() + " b:" + ballot + " v1:" + toStringValue1 + " v2:" + toStringValue2 + "]";
    } catch (Throwable e) {
        return "";
    }
}

Example 3 with Payload

use of org.neo4j.cluster.protocol.atomicbroadcast.Payload in project neo4j by neo4j.

the class PaxosClusterMemberAvailability method memberIsUnavailable.

@Override
public void memberIsUnavailable(String role) {
    try {
        MemberIsUnavailable message = new MemberIsUnavailable(role, myId, serverClusterId);
        Payload payload = serializer.broadcast(message);
        atomicBroadcast.broadcast(payload);
    } catch (Throwable e) {
        log.warn("Could not distribute member unavailability", e);
    }
}

Example 4 with Payload

use of org.neo4j.cluster.protocol.atomicbroadcast.Payload in project neo4j by neo4j.

the class ClusterMockTest method testCluster.

protected void testCluster(int[] serverIds, VerifyInstanceConfiguration[] finalConfig, NetworkMock mock, ClusterTestScript script) throws ExecutionException, InterruptedException, URISyntaxException, TimeoutException {
    this.script = script;
    network = mock;
    servers.clear();
    out.clear();
    in.clear();
    for (int i = 0; i < serverIds.length; i++) {
        final URI uri = new URI("server" + (i + 1));
        members.put(serverIds[i], uri);
        TestProtocolServer server = network.addServer(serverIds[i], uri);
        final Cluster cluster = server.newClient(Cluster.class);
        clusterStateListener(uri, cluster);
        server.newClient(Heartbeat.class).addHeartbeatListener(new HeartbeatListener() {

            @Override
            public void failed(InstanceId server) {
                logger.getLogger().warning(uri + ": Failed:" + server);
            }

            @Override
            public void alive(InstanceId server) {
                logger.getLogger().fine(uri + ": Alive:" + server);
            }
        });
        server.newClient(AtomicBroadcast.class).addAtomicBroadcastListener(new AtomicBroadcastListener() {

            AtomicBroadcastSerializer serializer = new AtomicBroadcastSerializer(new ObjectStreamFactory(), new ObjectStreamFactory());

            @Override
            public void receive(Payload value) {
                try {
                    logger.getLogger().fine(uri + " received: " + serializer.receive(value));
                } catch (IOException e) {
                    e.printStackTrace();
                } catch (ClassNotFoundException e) {
                    e.printStackTrace();
                }
            }
        });
        servers.add(server);
        out.add(cluster);
    }
    // Run test
    for (int i = 0; i < script.rounds(); i++) {
        logger.getLogger().fine("Round " + i + ", time:" + network.getTime());
        script.tick(network.getTime());
        network.tick();
    }
    // Let messages settle
    network.tick(100);
    if (finalConfig == null) {
        verifyConfigurations("final config");
    } else {
        verifyConfigurations(finalConfig);
    }
    logger.getLogger().fine("All nodes leave");
    // All leave
    for (Cluster cluster : new ArrayList<Cluster>(in)) {
        logger.getLogger().fine("Leaving:" + cluster);
        cluster.leave();
        in.remove(cluster);
        network.tick(400);
    }
    if (finalConfig != null) {
        verifyConfigurations(finalConfig);
    } else {
        verifyConfigurations("test over");
    }
}

Example 5 with Payload

use of org.neo4j.cluster.protocol.atomicbroadcast.Payload in project neo4j by neo4j.

the class StateTransitionLogger method stateTransition.

@Override
public void stateTransition(StateTransition transition) {
    Log log = logProvider.getLog(transition.getOldState().getClass());
    if (log.isDebugEnabled()) {
        if (transition.getOldState() == HeartbeatState.heartbeat) {
            return;
        }
        // The bulk of the message
        String state = transition.getOldState().getClass().getSuperclass().getSimpleName();
        StringBuilder line = new StringBuilder(state).append(": ").append(transition);
        // Who was this message from?
        if (transition.getMessage().hasHeader(FROM)) {
            line.append(" from:").append(transition.getMessage().getHeader(FROM));
        }
        if (transition.getMessage().hasHeader(INSTANCE)) {
            line.append(" instance:").append(transition.getMessage().getHeader(INSTANCE));
        }
        if (transition.getMessage().hasHeader(CONVERSATION_ID)) {
            line.append(" conversation-id:").append(transition.getMessage().getHeader(CONVERSATION_ID));
        }
        Object payload = transition.getMessage().getPayload();
        if (payload != null) {
            if (payload instanceof Payload) {
                try {
                    payload = atomicBroadcastSerializer.receive((Payload) payload);
                } catch (Throwable e) {
                // Ignore
                }
            }
            line.append(" payload:").append(Strings.prettyPrint(payload));
        }
        // Throttle
        String msg = line.toString();
        if (msg.equals(lastLogMessage)) {
            return;
        }
        // Log it
        log.debug(line.toString());
        lastLogMessage = msg;
    }
}