//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldUpdateDiscoveryHeaderWithContactingInstances()
public virtual void ShouldUpdateDiscoveryHeaderWithContactingInstances()
{
// Given
InstanceId me = new InstanceId(1);
InstanceId joiningOne = new InstanceId(2);
InstanceId joiningTwo = new InstanceId(3);
CommonContextState commonContextState = mock(typeof(CommonContextState), RETURNS_MOCKS);
Timeouts timeouts = mock(typeof(Timeouts));
Executor executor = mock(typeof(Executor));
HeartbeatContext heartbeatContext = mock(typeof(HeartbeatContext));
ClusterContext context = new ClusterContextImpl(me, commonContextState, NullLogProvider.Instance, timeouts, executor, mock(typeof(ObjectOutputStreamFactory)), mock(typeof(ObjectInputStreamFactory)), mock(typeof(LearnerContext)), heartbeatContext, mock(typeof(Config)));
ClusterMessage.ConfigurationRequestState requestOne = mock(typeof(ClusterMessage.ConfigurationRequestState));
when(requestOne.JoiningId).thenReturn(joiningOne);
ClusterMessage.ConfigurationRequestState requestTwo = mock(typeof(ClusterMessage.ConfigurationRequestState));
when(requestTwo.JoiningId).thenReturn(joiningTwo);
// When
// Instance 2 contacts us twice and Instance 3 contacts us once
context.AddContactingInstance(requestOne, "4, 5"); // discovery headers are random here
context.AddContactingInstance(requestOne, "4, 5");
context.AddContactingInstance(requestTwo, "2, 5");
// Then
// The discovery header we generate should still contain one copy of each instance
assertEquals("2,3", context.GenerateDiscoveryHeader());
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldGracefullyHandleEmptyDiscoveryHeader()
public virtual void ShouldGracefullyHandleEmptyDiscoveryHeader()
{
// Given
InstanceId me = new InstanceId(1);
InstanceId joining = new InstanceId(2);
CommonContextState commonContextState = mock(typeof(CommonContextState), RETURNS_MOCKS);
Timeouts timeouts = mock(typeof(Timeouts));
Executor executor = mock(typeof(Executor));
HeartbeatContext heartbeatContext = mock(typeof(HeartbeatContext));
ClusterContext context = new ClusterContextImpl(me, commonContextState, NullLogProvider.Instance, timeouts, executor, mock(typeof(ObjectOutputStreamFactory)), mock(typeof(ObjectInputStreamFactory)), mock(typeof(LearnerContext)), heartbeatContext, mock(typeof(Config)));
ClusterMessage.ConfigurationRequestState request = mock(typeof(ClusterMessage.ConfigurationRequestState));
when(request.JoiningId).thenReturn(joining);
// When
// Instance 2 contacts us with a request but it is empty
context.AddContactingInstance(request, "");
// Then
// The discovery header we generate should still contain that instance
assertEquals("2", context.GenerateDiscoveryHeader());
}
/*
* This test ensures that an instance that is marked as failed has its elector version reset. This means that
* the instance, once it comes back, will still be able to do elections even if it lost state
*/
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void nonElectorFailingMustNotCauseElectorVersionToBeReset()
public virtual void NonElectorFailingMustNotCauseElectorVersionToBeReset()
{
// Given
InstanceId me = new InstanceId(1);
InstanceId elector = new InstanceId(2);
CommonContextState commonContextState = mock(typeof(CommonContextState), RETURNS_MOCKS);
Timeouts timeouts = mock(typeof(Timeouts));
Executor executor = mock(typeof(Executor));
HeartbeatContext heartbeatContext = mock(typeof(HeartbeatContext));
ArgumentCaptor <HeartbeatListener> listenerCaptor = ArgumentCaptor.forClass(typeof(HeartbeatListener));
ClusterContext context = new ClusterContextImpl(me, commonContextState, NullLogProvider.Instance, timeouts, executor, mock(typeof(ObjectOutputStreamFactory)), mock(typeof(ObjectInputStreamFactory)), mock(typeof(LearnerContext)), heartbeatContext, mock(typeof(Config)));
verify(heartbeatContext).addHeartbeatListener(listenerCaptor.capture());
HeartbeatListener theListener = listenerCaptor.Value;
// This means instance 2 was the elector at version 8
context.LastElector = elector;
context.LastElectorVersion = 8;
// When
theListener.Failed(new InstanceId(3));
// Then
assertEquals(context.LastElector, elector);
assertEquals(context.LastElectorVersion, 8);
}
public override ProtocolServer NewProtocolServer(InstanceId me, TimeoutStrategy timeoutStrategy, MessageSource input, MessageSender output, AcceptorInstanceStore acceptorInstanceStore, ElectionCredentialsProvider electionCredentialsProvider, Executor stateMachineExecutor, ObjectInputStreamFactory objectInputStreamFactory, ObjectOutputStreamFactory objectOutputStreamFactory, Config config)
{
DelayedDirectExecutor executor = new DelayedDirectExecutor(_logging);
// Create state machines
Timeouts timeouts = new Timeouts(timeoutStrategy);
//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(me, 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(initialConfig.getName(), logging, initialConfig.getMemberURIs()), executor, logging, objectInputStreamFactory, objectOutputStreamFactory, acceptorInstanceStore, timeouts, electionCredentialsProvider, config);
MultiPaxosContext context = new MultiPaxosContext(me, Iterables.iterable(new ElectionRole(ClusterConfiguration.COORDINATOR)), new ClusterConfiguration(_initialConfig.Name, _logging, _initialConfig.MemberURIs), executor, _logging, objectInputStreamFactory, objectOutputStreamFactory, acceptorInstanceStore, timeouts, electionCredentialsProvider, config);
SnapshotContext snapshotContext = new SnapshotContext(context.ClusterContext, context.LearnerContext);
return(NewProtocolServer(me, input, output, stateMachineExecutor, executor, timeouts, context, snapshotContext));
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldKeepTrackOfInstancesWeHaveContacted()
public virtual void ShouldKeepTrackOfInstancesWeHaveContacted()
{
// Given
InstanceId me = new InstanceId(1);
InstanceId joiningOne = new InstanceId(2);
InstanceId joiningTwo = new InstanceId(3);
CommonContextState commonContextState = mock(typeof(CommonContextState), RETURNS_MOCKS);
Timeouts timeouts = mock(typeof(Timeouts));
Executor executor = mock(typeof(Executor));
HeartbeatContext heartbeatContext = mock(typeof(HeartbeatContext));
ClusterContext context = new ClusterContextImpl(me, commonContextState, NullLogProvider.Instance, timeouts, executor, mock(typeof(ObjectOutputStreamFactory)), mock(typeof(ObjectInputStreamFactory)), mock(typeof(LearnerContext)), heartbeatContext, mock(typeof(Config)));
ClusterMessage.ConfigurationRequestState requestOne = mock(typeof(ClusterMessage.ConfigurationRequestState));
when(requestOne.JoiningId).thenReturn(joiningOne);
ClusterMessage.ConfigurationRequestState requestTwo = mock(typeof(ClusterMessage.ConfigurationRequestState));
when(requestTwo.JoiningId).thenReturn(joiningTwo);
// When
// Instance two contacts us but we are not in the header
context.AddContactingInstance(requestOne, "4, 5");
// Then we haven't contacted instance 2
assertFalse(context.HaveWeContactedInstance(requestOne));
// When
// Instance 2 reports that we have contacted it after all
context.AddContactingInstance(requestOne, "4, 5, 1");
// Then
assertTrue(context.HaveWeContactedInstance(requestOne));
// When
// Instance 3 says we have contacted it
context.AddContactingInstance(requestTwo, "2, 5, 1");
// Then
assertTrue(context.HaveWeContactedInstance(requestTwo));
// When
// For some reason we are not in the header of 3 in subsequent responses (a delayed one, for example)
context.AddContactingInstance(requestTwo, "2, 5");
// Then
// The state should still keep the fact we've contacted it already
assertTrue(context.HaveWeContactedInstance(requestTwo));
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldDeepClone()
public virtual void ShouldDeepClone()
{
// Given
ObjectStreamFactory objStream = new ObjectStreamFactory();
AcceptorInstanceStore acceptorInstances = mock(typeof(AcceptorInstanceStore));
Executor executor = mock(typeof(Executor));
Timeouts timeouts = mock(typeof(Timeouts));
ClusterConfiguration clusterConfig = new ClusterConfiguration("myCluster", NullLogProvider.Instance);
ElectionCredentialsProvider electionCredentials = mock(typeof(ElectionCredentialsProvider));
Config config = mock(typeof(Config));
when(config.Get(ClusterSettings.max_acceptors)).thenReturn(10);
MultiPaxosContext ctx = new MultiPaxosContext(new InstanceId(1), Collections.emptyList(), clusterConfig, executor, NullLogProvider.Instance, objStream, objStream, acceptorInstances, timeouts, electionCredentials, config);
// When
MultiPaxosContext snapshot = ctx.Snapshot(NullLogProvider.Instance, timeouts, executor, acceptorInstances, objStream, objStream, electionCredentials);
// Then
assertEquals(ctx, snapshot);
}
public virtual AtomicBroadcastContextImpl Snapshot(CommonContextState commonStateSnapshot, LogProvider logging, Timeouts timeouts, Executor executor, HeartbeatContext heartbeatContext)
{
return(new AtomicBroadcastContextImpl(Me, commonStateSnapshot, logging, timeouts, executor, heartbeatContext));
}
internal AtomicBroadcastContextImpl(Org.Neo4j.cluster.InstanceId me, CommonContextState commonState, LogProvider logging, Timeouts timeouts, Executor executor, HeartbeatContext heartbeatContext) : base(me, commonState, logging, timeouts)
{
this._executor = executor;
this._heartbeatContext = heartbeatContext;
}
/// <summary>
/// Sets up the supporting infrastructure and communication hooks for our state machines. This is here to support
/// an external requirement for assembling protocol servers given an existing set of state machines (used to prove
/// correctness).
/// </summary>
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @SuppressWarnings("rawtypes") public ProtocolServer constructSupportingInfrastructureFor(InstanceId me, org.neo4j.cluster.com.message.MessageSource input, org.neo4j.cluster.com.message.MessageSender output, DelayedDirectExecutor executor, org.neo4j.cluster.timeout.Timeouts timeouts, java.util.concurrent.Executor stateMachineExecutor, final org.neo4j.cluster.protocol.atomicbroadcast.multipaxos.context.MultiPaxosContext context, org.neo4j.cluster.statemachine.StateMachine[] machines)
//JAVA TO C# CONVERTER WARNING: 'final' parameters are ignored unless the option to convert to C# 7.2 'in' parameters is selected:
public virtual ProtocolServer ConstructSupportingInfrastructureFor(InstanceId me, MessageSource input, MessageSender output, DelayedDirectExecutor executor, Timeouts timeouts, Executor stateMachineExecutor, MultiPaxosContext context, StateMachine[] machines)
{
StateMachines stateMachines = new StateMachines(_logging, _stateMachinesMonitor, input, output, timeouts, executor, stateMachineExecutor, me);
foreach (StateMachine machine in machines)
{
stateMachines.AddStateMachine(machine);
}
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final ProtocolServer server = new ProtocolServer(me, stateMachines, logging);
ProtocolServer server = new ProtocolServer(me, stateMachines, _logging);
server.AddBindingListener(me1 => context.ClusterContext.setBoundAt(me1));
stateMachines.AddMessageProcessor(new HeartbeatRefreshProcessor(stateMachines.Outgoing, context.ClusterContext));
input.AddMessageProcessor(new HeartbeatIAmAliveProcessor(stateMachines.Outgoing, context.ClusterContext));
Cluster cluster = server.NewClient(typeof(Cluster));
cluster.AddClusterListener(new HeartbeatJoinListener(stateMachines.Outgoing));
cluster.AddClusterListener(new HeartbeatLeftListener(context.HeartbeatContext, _logging));
context.HeartbeatContext.addHeartbeatListener(new HeartbeatReelectionListener(server.NewClient(typeof(Election)), _logging));
context.ClusterContext.addClusterListener(new ClusterLeaveReelectionListener(server.NewClient(typeof(Election)), _logging));
StateMachineRules rules = (new StateMachineRules(stateMachines.Outgoing)).rule(ClusterState.start, ClusterMessage.create, ClusterState.entered, @internal(AtomicBroadcastMessage.entered), @internal(ProposerMessage.join), @internal(AcceptorMessage.join), @internal(LearnerMessage.join), @internal(HeartbeatMessage.join), @internal(ElectionMessage.created), @internal(SnapshotMessage.join)).rule(ClusterState.discovery, ClusterMessage.configurationResponse, ClusterState.joining, @internal(AcceptorMessage.join), @internal(LearnerMessage.join), @internal(AtomicBroadcastMessage.join)).rule(ClusterState.discovery, ClusterMessage.configurationResponse, ClusterState.entered, @internal(AtomicBroadcastMessage.entered), @internal(ProposerMessage.join), @internal(AcceptorMessage.join), @internal(LearnerMessage.join), @internal(HeartbeatMessage.join), @internal(ElectionMessage.join), @internal(SnapshotMessage.join)).rule(ClusterState.joining, ClusterMessage.configurationChanged, ClusterState.entered, @internal(AtomicBroadcastMessage.entered), @internal(ProposerMessage.join), @internal(AcceptorMessage.join), @internal(LearnerMessage.join), @internal(HeartbeatMessage.join), @internal(ElectionMessage.join), @internal(SnapshotMessage.join)).rule(ClusterState.joining, ClusterMessage.joinFailure, ClusterState.start, @internal(AtomicBroadcastMessage.leave), @internal(AcceptorMessage.leave), @internal(LearnerMessage.leave), @internal(ProposerMessage.leave)).rule(ClusterState.entered, ClusterMessage.leave, ClusterState.start, @internal(AtomicBroadcastMessage.leave), @internal(AcceptorMessage.leave), @internal(LearnerMessage.leave), @internal(HeartbeatMessage.leave), @internal(SnapshotMessage.leave), @internal(ElectionMessage.leave), @internal(ProposerMessage.leave)).rule(ClusterState.entered, ClusterMessage.leave, ClusterState.start, @internal(AtomicBroadcastMessage.leave), @internal(AcceptorMessage.leave), @internal(LearnerMessage.leave), @internal(HeartbeatMessage.leave), @internal(ElectionMessage.leave), @internal(SnapshotMessage.leave), @internal(ProposerMessage.leave)).rule(ClusterState.leaving, ClusterMessage.configurationChanged, ClusterState.start, @internal(AtomicBroadcastMessage.leave), @internal(AcceptorMessage.leave), @internal(LearnerMessage.leave), @internal(HeartbeatMessage.leave), @internal(ElectionMessage.leave), @internal(SnapshotMessage.leave), @internal(ProposerMessage.leave)).rule(ClusterState.leaving, ClusterMessage.leaveTimedout, ClusterState.start, @internal(AtomicBroadcastMessage.leave), @internal(AcceptorMessage.leave), @internal(LearnerMessage.leave), @internal(HeartbeatMessage.leave), @internal(ElectionMessage.leave), @internal(SnapshotMessage.leave), @internal(ProposerMessage.leave));
stateMachines.AddStateTransitionListener(rules);
return(server);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @SuppressWarnings("unchecked") public ProtocolServer newProtocolServer(InstanceId me, org.neo4j.cluster.com.message.MessageSource input, org.neo4j.cluster.com.message.MessageSender output, java.util.concurrent.Executor stateMachineExecutor, DelayedDirectExecutor executor, org.neo4j.cluster.timeout.Timeouts timeouts, org.neo4j.cluster.protocol.atomicbroadcast.multipaxos.context.MultiPaxosContext context, org.neo4j.cluster.protocol.snapshot.SnapshotContext snapshotContext)
public virtual ProtocolServer NewProtocolServer(InstanceId me, MessageSource input, MessageSender output, Executor stateMachineExecutor, DelayedDirectExecutor executor, Timeouts timeouts, MultiPaxosContext context, SnapshotContext snapshotContext)
{
return(ConstructSupportingInfrastructureFor(me, input, output, executor, timeouts, stateMachineExecutor, context, new StateMachine[]
{
new StateMachine(context.AtomicBroadcastContext, typeof(AtomicBroadcastMessage), AtomicBroadcastState.start, _logging),
new StateMachine(context.AcceptorContext, typeof(AcceptorMessage), AcceptorState.start, _logging),
new StateMachine(context.ProposerContext, typeof(ProposerMessage), ProposerState.start, _logging),
new StateMachine(context.LearnerContext, typeof(LearnerMessage), LearnerState.start, _logging),
new StateMachine(context.HeartbeatContext, typeof(HeartbeatMessage), HeartbeatState.start, _logging),
new StateMachine(context.ElectionContext, typeof(ElectionMessage), ElectionState.start, _logging),
new StateMachine(snapshotContext, typeof(SnapshotMessage), SnapshotState.start, _logging),
new StateMachine(context.ClusterContext, typeof(ClusterMessage), ClusterState.start, _logging)
}));
}
public virtual AcceptorContextImpl Snapshot(CommonContextState commonStateSnapshot, LogProvider logging, Timeouts timeouts, AcceptorInstanceStore instanceStore)
{
return(new AcceptorContextImpl(Me, commonStateSnapshot, logging, timeouts, instanceStore));
}
internal AcceptorContextImpl(Org.Neo4j.cluster.InstanceId me, CommonContextState commonState, LogProvider logging, Timeouts timeouts, AcceptorInstanceStore instanceStore) : base(me, commonState, logging, timeouts)
{
this._instanceStore = instanceStore;
}
