//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void majorityOfNonSuspectedInstancesShouldBeEnoughToMarkAnInstanceAsFailed()
public virtual void MajorityOfNonSuspectedInstancesShouldBeEnoughToMarkAnInstanceAsFailed()
{
// Given
InstanceId me = new InstanceId(1);
InstanceId member2 = new InstanceId(2);
InstanceId member3 = new InstanceId(3);
InstanceId member4 = new InstanceId(4);
InstanceId member5 = new InstanceId(5);
Timeouts timeouts = mock(typeof(Timeouts));
CommonContextState commonState = mock(typeof(CommonContextState));
ClusterConfiguration configuration = mock(typeof(ClusterConfiguration));
when(commonState.Configuration()).thenReturn(configuration);
when(configuration.Members).thenReturn(members(5));
when(configuration.MemberIds).thenReturn(ids(5));
DelayedDirectExecutor executor = new DelayedDirectExecutor(NullLogProvider.Instance);
HeartbeatContext context = new HeartbeatContextImpl(me, commonState, NullLogProvider.Instance, timeouts, executor);
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final java.util.List<org.neo4j.cluster.InstanceId> failed = new java.util.ArrayList<>(4);
IList <InstanceId> failed = new List <InstanceId>(4);
HeartbeatListener listener = new HeartbeatListenerAnonymousInnerClass2(this, failed);
context.AddHeartbeatListener(listener);
// when
// just two suspicions come, no extra failing action should be taken since this is not majority
context.Suspect(member2);
context.Suspect(member3);
executor.Drain();
// then
assertEquals(0, failed.Count);
// when
// the another instance suspects them, therefore have a majority of non suspected, then 2 and 3 must fail
ISet <InstanceId> suspicionsFrom5 = new HashSet <InstanceId>();
suspicionsFrom5.Add(member2);
suspicionsFrom5.Add(member3);
context.Suspicions(member5, suspicionsFrom5);
executor.Drain();
// then
assertEquals(2, failed.Count);
assertTrue(failed.Contains(member2));
assertTrue(failed.Contains(member3));
// when
// an instance sends a heartbeat, it should be set as alive
context.Alive(member2);
executor.Drain();
// then
assertEquals(1, failed.Count);
assertTrue(failed.Contains(member3));
}
public static ClusterInstance NewClusterInstance(InstanceId id, URI uri, Monitors monitors, ClusterConfiguration configuration, int maxSurvivableFailedMembers, LogProvider logging)
{
MultiPaxosServerFactory factory = new MultiPaxosServerFactory(configuration, logging, monitors.NewMonitor(typeof(StateMachines.Monitor)));
ClusterInstanceInput input = new ClusterInstanceInput();
ClusterInstanceOutput output = new ClusterInstanceOutput(uri);
ObjectStreamFactory objStreamFactory = new ObjectStreamFactory();
ProverTimeouts timeouts = new ProverTimeouts(uri);
InMemoryAcceptorInstanceStore acceptorInstances = new InMemoryAcceptorInstanceStore();
Config config = mock(typeof(Config));
when(config.Get(ClusterSettings.max_acceptors)).thenReturn(maxSurvivableFailedMembers);
DelayedDirectExecutor executor = new DelayedDirectExecutor(logging);
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final org.neo4j.cluster.protocol.atomicbroadcast.multipaxos.context.MultiPaxosContext context = new org.neo4j.cluster.protocol.atomicbroadcast.multipaxos.context.MultiPaxosContext(id, org.neo4j.helpers.collection.Iterables.iterable(new org.neo4j.cluster.protocol.election.ElectionRole(org.neo4j.cluster.protocol.cluster.ClusterConfiguration.COORDINATOR)), new org.neo4j.cluster.protocol.cluster.ClusterConfiguration(configuration.getName(), logging, configuration.getMemberURIs()), executor, logging, objStreamFactory, objStreamFactory, acceptorInstances, timeouts, new org.neo4j.kernel.ha.cluster.DefaultElectionCredentialsProvider(id, new StateVerifierLastTxIdGetter(), new MemberInfoProvider()), config);
MultiPaxosContext context = new MultiPaxosContext(id, Iterables.iterable(new ElectionRole(ClusterConfiguration.COORDINATOR)), new ClusterConfiguration(configuration.Name, logging, configuration.MemberURIs), executor, logging, objStreamFactory, objStreamFactory, acceptorInstances, timeouts, new DefaultElectionCredentialsProvider(id, new StateVerifierLastTxIdGetter(), new MemberInfoProvider()), config);
context.ClusterContext.BoundAt = uri;
SnapshotContext snapshotContext = new SnapshotContext(context.ClusterContext, context.LearnerContext);
DelayedDirectExecutor taskExecutor = new DelayedDirectExecutor(logging);
ProtocolServer ps = factory.NewProtocolServer(id, input, output, DirectExecutor, taskExecutor, timeouts, context, snapshotContext);
return(new ClusterInstance(DirectExecutor, logging, factory, ps, context, acceptorInstances, timeouts, input, output, uri));
}
public virtual ClusterInstance NewCopy()
{
// A very invasive method of cloning a protocol server. Nonetheless, since this is mostly an experiment at this
// point, it seems we can refactor later on to have a cleaner clone mechanism.
// Because state machines share state, and are simultaneously conceptually unaware of each other, implementing
// a clean snapshot mechanism is very hard. I've opted for having a dirty one here in the test code rather
// than introducing a hack into the runtime code.
ProverTimeouts timeoutsSnapshot = _timeouts.snapshot();
InMemoryAcceptorInstanceStore snapshotAcceptorInstances = _acceptorInstanceStore.snapshot();
ClusterInstanceOutput output = new ClusterInstanceOutput(_uri);
ClusterInstanceInput input = new ClusterInstanceInput();
DelayedDirectExecutor executor = new DelayedDirectExecutor(_logging);
ObjectStreamFactory objectStreamFactory = new ObjectStreamFactory();
MultiPaxosContext snapshotCtx = _ctx.snapshot(_logging, timeoutsSnapshot, executor, snapshotAcceptorInstances, objectStreamFactory, objectStreamFactory, new DefaultElectionCredentialsProvider(_server.ServerId, new StateVerifierLastTxIdGetter(), new MemberInfoProvider())
);
IList <StateMachine> snapshotMachines = new List <StateMachine>();
foreach (StateMachine stateMachine in _server.StateMachines.StateMachines)
{
snapshotMachines.Add(SnapshotStateMachine(_logging, snapshotCtx, stateMachine));
}
ProtocolServer snapshotProtocolServer = _factory.constructSupportingInfrastructureFor(_server.ServerId, input, output, executor, timeoutsSnapshot, _stateMachineExecutor, snapshotCtx, snapshotMachines.ToArray());
return(new ClusterInstance(_stateMachineExecutor, _logging, _factory, snapshotProtocolServer, snapshotCtx, snapshotAcceptorInstances, timeoutsSnapshot, input, output, _uri));
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldFailAllInstancesIfAllOtherInstancesAreSuspected()
public virtual void ShouldFailAllInstancesIfAllOtherInstancesAreSuspected()
{
// Given
InstanceId me = new InstanceId(1);
InstanceId member2 = new InstanceId(2);
InstanceId member3 = new InstanceId(3);
Timeouts timeouts = mock(typeof(Timeouts));
CommonContextState commonState = mock(typeof(CommonContextState));
ClusterConfiguration configuration = mock(typeof(ClusterConfiguration));
when(commonState.Configuration()).thenReturn(configuration);
when(configuration.Members).thenReturn(members(3));
when(configuration.MemberIds).thenReturn(ids(3));
DelayedDirectExecutor executor = new DelayedDirectExecutor(NullLogProvider.Instance);
HeartbeatContext context = new HeartbeatContextImpl(me, commonState, NullLogProvider.Instance, timeouts, executor);
IList <InstanceId> failed = new List <InstanceId>(2);
HeartbeatListener listener = new HeartbeatListenerAnonymousInnerClass(this, failed);
context.AddHeartbeatListener(listener);
// when
// just one suspicion comes, no extra failing action should be taken
context.Suspect(member2);
executor.Drain();
// then
assertEquals(0, failed.Count);
// when
// the other instance is suspected, all instances must be marked as failed
context.Suspect(member3);
executor.Drain();
// then
assertEquals(2, failed.Count);
assertTrue(failed.Contains(member2));
assertTrue(failed.Contains(member3));
// when
// one of them comes alive again, only that instance should be marked as alive
context.Alive(member2);
executor.Drain();
// then
assertEquals(1, failed.Count);
assertTrue(failed.Contains(member3));
}
