use of org.neo4j.cluster.InstanceId 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");
}
}
use of org.neo4j.cluster.InstanceId in project neo4j by neo4j.
the class HeartbeatStateTest method shouldIgnoreSuspicionsForOurselvesButKeepTheRest.
@Test
public void shouldIgnoreSuspicionsForOurselvesButKeepTheRest() throws Throwable {
// Given
InstanceId myId = new InstanceId(1);
InstanceId foreignId = new InstanceId(3);
HeartbeatState heartbeat = HeartbeatState.heartbeat;
ClusterConfiguration configuration = new ClusterConfiguration("whatever", NullLogProvider.getInstance(), "cluster://1", "cluster://2");
configuration.joined(myId, URI.create("cluster://1"));
configuration.joined(new InstanceId(2), URI.create("cluster://2"));
Config config = mock(Config.class);
when(config.get(ClusterSettings.max_acceptors)).thenReturn(10);
MultiPaxosContext context = new MultiPaxosContext(myId, iterable(new ElectionRole("coordinator")), configuration, 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), config);
HeartbeatContext heartbeatContext = context.getHeartbeatContext();
Message received = Message.internal(HeartbeatMessage.suspicions, new HeartbeatMessage.SuspicionsState(asSet(iterable(myId, foreignId))));
received.setHeader(Message.FROM, "cluster://2").setHeader(Message.INSTANCE_ID, "2");
// When
heartbeat.handle(heartbeatContext, received, mock(MessageHolder.class));
// Then
assertThat(heartbeatContext.getSuspicionsOf(myId).size(), equalTo(0));
assertThat(heartbeatContext.getSuspicionsOf(foreignId).size(), equalTo(1));
}
use of org.neo4j.cluster.InstanceId in project neo4j by neo4j.
the class SnapshotStateTest method baseNoSendTest.
public void baseNoSendTest(Map<InstanceId, URI> extraMembers) throws Throwable {
URI me = URI.create("cluster://me");
Map<InstanceId, URI> members = new HashMap<InstanceId, URI>();
final InstanceId myId = new InstanceId(1);
members.put(myId, me);
members.putAll(extraMembers);
ClusterConfiguration clusterConfiguration = mock(ClusterConfiguration.class);
when(clusterConfiguration.getMembers()).thenReturn(members);
when(clusterConfiguration.getElected(ClusterConfiguration.COORDINATOR)).thenReturn(myId);
when(clusterConfiguration.getUriForId(myId)).thenReturn(me);
ClusterContext clusterContext = mock(ClusterContext.class);
when(clusterContext.getConfiguration()).thenReturn(clusterConfiguration);
when(clusterContext.getMyId()).thenReturn(myId);
SnapshotContext context = mock(SnapshotContext.class);
when(context.getClusterContext()).thenReturn(clusterContext);
when(context.getSnapshotProvider()).thenReturn(mock(SnapshotProvider.class));
Message<SnapshotMessage> message = Message.to(SnapshotMessage.refreshSnapshot, me);
MessageHolder outgoing = mock(MessageHolder.class);
SnapshotState newState = (SnapshotState) SnapshotState.ready.handle(context, message, outgoing);
assertThat(newState, equalTo(SnapshotState.ready));
Mockito.verifyZeroInteractions(outgoing);
}
use of org.neo4j.cluster.InstanceId in project neo4j by neo4j.
the class InstanceIdTest method substituteFailedNode.
@Test
public void substituteFailedNode() throws InterruptedException, ExecutionException, TimeoutException, URISyntaxException {
List<URI> correctMembers = new ArrayList<>();
correctMembers.add(URI.create("server1"));
correctMembers.add(URI.create("server2"));
correctMembers.add(URI.create("server4"));
List<URI> wrongMembers = new ArrayList<>();
wrongMembers.add(URI.create("server1"));
wrongMembers.add(URI.create("server2"));
wrongMembers.add(URI.create("server3"));
Map<String, InstanceId> roles = new HashMap<>();
roles.put("coordinator", new InstanceId(1));
Set<InstanceId> clusterMemberFailed = new HashSet<>();
Set<InstanceId> isolatedMemberFailed = new HashSet<>();
// will never receive heartbeats again from 1,2 so they are failed
isolatedMemberFailed.add(new InstanceId(1));
isolatedMemberFailed.add(new InstanceId(2));
testCluster(new int[] { 1, 2, 3, 3 }, new VerifyInstanceConfiguration[] { new VerifyInstanceConfiguration(correctMembers, roles, clusterMemberFailed), new VerifyInstanceConfiguration(correctMembers, roles, clusterMemberFailed), new VerifyInstanceConfiguration(wrongMembers, roles, isolatedMemberFailed), new VerifyInstanceConfiguration(correctMembers, roles, clusterMemberFailed) }, DEFAULT_NETWORK(), new ClusterTestScriptDSL().rounds(8000).join(100, 1, 1).join(100, 2, 1).join(100, 3, 1).down(3000, 3).join(1000, 4, 1, 2, 3));
}
use of org.neo4j.cluster.InstanceId in project neo4j by neo4j.
the class InstanceIdTest method substituteFailedNodeAndFailedComesOnlineAgain.
@Test
public void substituteFailedNodeAndFailedComesOnlineAgain() throws InterruptedException, ExecutionException, TimeoutException, URISyntaxException {
List<URI> correctMembers = new ArrayList<>();
correctMembers.add(URI.create("server1"));
correctMembers.add(URI.create("server2"));
correctMembers.add(URI.create("server4"));
List<URI> badMembers = new ArrayList<>();
badMembers.add(URI.create("server1"));
badMembers.add(URI.create("server2"));
badMembers.add(URI.create("server3"));
Map<String, InstanceId> roles = new HashMap<>();
roles.put("coordinator", new InstanceId(1));
// no failures
Set<InstanceId> clusterMemberFailed = new HashSet<>();
Set<InstanceId> isolatedMemberFailed = new HashSet<>();
// will never receive heartbeats again from 1,2 so they are failed
isolatedMemberFailed.add(new InstanceId(1));
isolatedMemberFailed.add(new InstanceId(2));
testCluster(new int[] { 1, 2, 3, 3 }, new VerifyInstanceConfiguration[] { new VerifyInstanceConfiguration(correctMembers, roles, clusterMemberFailed), new VerifyInstanceConfiguration(correctMembers, roles, clusterMemberFailed), new VerifyInstanceConfiguration(badMembers, roles, isolatedMemberFailed), new VerifyInstanceConfiguration(correctMembers, roles, clusterMemberFailed) }, DEFAULT_NETWORK(), new ClusterTestScriptDSL().rounds(800).join(100, 1, 1).join(100, 2, 1).join(100, 3, 1).down(3000, 3).join(1000, 4, 1, 2, 3).up(1000, 3));
}
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