//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void whenInToSlaveStateLosingQuorumShouldPutInPending()
public virtual void WhenInToSlaveStateLosingQuorumShouldPutInPending()
{
// Given
InstanceId me = new InstanceId(1);
InstanceId other = new InstanceId(2);
HighAvailabilityMemberContext context = new SimpleHighAvailabilityMemberContext(me, false);
AvailabilityGuard guard = mock(typeof(DatabaseAvailabilityGuard));
ObservedClusterMembers members = MockClusterMembers(me, emptyList(), singletonList(other));
ClusterMemberEvents events = mock(typeof(ClusterMemberEvents));
ClusterMemberListenerContainer memberListenerContainer = MockAddClusterMemberListener(events);
HighAvailabilityMemberStateMachine stateMachine = BuildMockedStateMachine(context, events, members, guard);
stateMachine.Init();
ClusterMemberListener memberListener = memberListenerContainer.Get();
HAStateChangeListener probe = new HAStateChangeListener();
stateMachine.AddHighAvailabilityMemberListener(probe);
// Send it to MASTER
memberListener.MemberIsAvailable(MASTER, other, URI.create("ha://whatever"), StoreId.DEFAULT);
assertThat(stateMachine.CurrentState, equalTo(HighAvailabilityMemberState.ToSlave));
// When
memberListener.MemberIsFailed(new InstanceId(2));
// Then
assertThat(stateMachine.CurrentState, equalTo(HighAvailabilityMemberState.Pending));
assertThat(probe.InstanceStopsConflict, @is(false));
assertThat(probe.InstanceDetachedConflict, @is(true));
verify(guard, times(1)).require(any(typeof(AvailabilityRequirement)));
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void whenInSlaveStateLosingOtherSlaveShouldNotPutInPending()
public virtual void WhenInSlaveStateLosingOtherSlaveShouldNotPutInPending()
{
// Given
InstanceId me = new InstanceId(1);
InstanceId master = new InstanceId(2);
InstanceId otherSlave = new InstanceId(3);
HighAvailabilityMemberContext context = new SimpleHighAvailabilityMemberContext(me, false);
AvailabilityGuard guard = mock(typeof(DatabaseAvailabilityGuard));
ObservedClusterMembers members = MockClusterMembers(me, singletonList(master), singletonList(otherSlave));
ClusterMemberEvents events = mock(typeof(ClusterMemberEvents));
ClusterMemberListenerContainer memberListenerContainer = MockAddClusterMemberListener(events);
HighAvailabilityMemberStateMachine stateMachine = BuildMockedStateMachine(context, events, members, guard);
stateMachine.Init();
ClusterMemberListener memberListener = memberListenerContainer.Get();
HAStateChangeListener probe = new HAStateChangeListener();
stateMachine.AddHighAvailabilityMemberListener(probe);
// Send it to MASTER
memberListener.MemberIsAvailable(MASTER, master, URI.create("ha://whatever"), StoreId.DEFAULT);
memberListener.MemberIsAvailable(SLAVE, me, URI.create("ha://whatever3"), StoreId.DEFAULT);
memberListener.MemberIsAvailable(SLAVE, otherSlave, URI.create("ha://whatever2"), StoreId.DEFAULT);
assertThat(stateMachine.CurrentState, equalTo(HighAvailabilityMemberState.Slave));
// When
memberListener.MemberIsFailed(otherSlave);
// Then
assertThat(stateMachine.CurrentState, equalTo(HighAvailabilityMemberState.Slave));
assertThat(probe.InstanceStopsConflict, @is(false));
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void whenInMasterStateLosingQuorumFromTwoInstancesShouldRemainMaster()
public virtual void WhenInMasterStateLosingQuorumFromTwoInstancesShouldRemainMaster()
{
// Given
InstanceId me = new InstanceId(1);
InstanceId other = new InstanceId(2);
HighAvailabilityMemberContext context = new SimpleHighAvailabilityMemberContext(me, false);
AvailabilityGuard guard = mock(typeof(DatabaseAvailabilityGuard));
ObservedClusterMembers members = MockClusterMembers(me, emptyList(), singletonList(other));
ClusterMemberEvents events = mock(typeof(ClusterMemberEvents));
ClusterMemberListenerContainer memberListenerContainer = MockAddClusterMemberListener(events);
HighAvailabilityMemberStateMachine stateMachine = BuildMockedStateMachine(context, events, members, guard);
stateMachine.Init();
ClusterMemberListener memberListener = memberListenerContainer.Get();
HAStateChangeListener probe = new HAStateChangeListener();
stateMachine.AddHighAvailabilityMemberListener(probe);
// Send it to MASTER
memberListener.CoordinatorIsElected(me);
memberListener.MemberIsAvailable(MASTER, me, URI.create("ha://whatever"), StoreId.DEFAULT);
assertThat(stateMachine.CurrentState, equalTo(HighAvailabilityMemberState.Master));
// When
memberListener.MemberIsFailed(new InstanceId(2));
// Then
assertThat(stateMachine.CurrentState, equalTo(HighAvailabilityMemberState.Master));
assertThat(probe.InstanceStopsConflict, @is(false));
assertThat(probe.InstanceDetachedConflict, @is(false));
}
public HighAvailabilityMemberStateMachine(HighAvailabilityMemberContext context, AvailabilityGuard databaseAvailabilityGuard, ObservedClusterMembers members, ClusterMemberEvents events, Election election, LogProvider logProvider)
{
this._context = context;
this._databaseAvailabilityGuard = databaseAvailabilityGuard;
this._members = members;
this._events = events;
this._election = election;
this._log = logProvider.getLog(this.GetType());
_state = HighAvailabilityMemberState.Pending;
}
private static System.Func <ClusterMembers> GetClusterMembers(string memberRole, HighAvailabilityMemberState memberState)
{
HighAvailabilityMemberStateMachine stateMachine = mock(typeof(HighAvailabilityMemberStateMachine));
when(stateMachine.CurrentState).thenReturn(memberState);
ClusterMember clusterMember = spy(new ClusterMember(new InstanceId(1)));
when(clusterMember.HARole).thenReturn(memberRole);
ObservedClusterMembers observedClusterMembers = mock(typeof(ObservedClusterMembers));
when(observedClusterMembers.CurrentMember).thenReturn(clusterMember);
return(() => new ClusterMembers(observedClusterMembers, stateMachine));
}
private ObservedClusterMembers MockClusterMembers(InstanceId me, IList <InstanceId> alive, IList <InstanceId> failed)
{
ObservedClusterMembers members = mock(typeof(ObservedClusterMembers));
// we cannot set outside of the package the isAlive to return false. So do it with a mock
IList <ClusterMember> aliveMembers = new List <ClusterMember>(alive.Count);
IList <ClusterMember> failedMembers = new List <ClusterMember>(failed.Count);
foreach (InstanceId instanceId in alive)
{
ClusterMember otherMember = mock(typeof(ClusterMember));
when(otherMember.InstanceId).thenReturn(instanceId);
// the failed argument tells us which instance should be marked as failed
when(otherMember.Alive).thenReturn(true);
aliveMembers.Add(otherMember);
}
foreach (InstanceId instanceId in failed)
{
ClusterMember otherMember = mock(typeof(ClusterMember));
when(otherMember.InstanceId).thenReturn(instanceId);
// the failed argument tells us which instance should be marked as failed
when(otherMember.Alive).thenReturn(false);
failedMembers.Add(otherMember);
}
ClusterMember thisMember = new ClusterMember(me);
aliveMembers.Add(thisMember);
IList <ClusterMember> allMembers = new List <ClusterMember>();
((IList <ClusterMember>)allMembers).AddRange(aliveMembers); // thisMember is in aliveMembers
((IList <ClusterMember>)allMembers).AddRange(failedMembers);
when(members.Members).thenReturn(allMembers);
when(members.AliveMembers).thenReturn(aliveMembers);
return(members);
}
internal virtual StateMachineBuilder WithClusterMembers(ObservedClusterMembers clusterMember)
{
this.ClusterMembers = clusterMember;
return(this);
}
private HighAvailabilityMemberStateMachine BuildMockedStateMachine(HighAvailabilityMemberContext context, ClusterMemberEvents events, ObservedClusterMembers clusterMembers, AvailabilityGuard guard)
{
return((new StateMachineBuilder()).WithContext(context).withEvents(events).withClusterMembers(clusterMembers).withGuard(guard).build());
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void whenHAModeSwitcherSwitchesToSlaveTheOtherModeSwitcherDoNotGetTheOldMasterClient() throws Throwable
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void WhenHAModeSwitcherSwitchesToSlaveTheOtherModeSwitcherDoNotGetTheOldMasterClient()
{
InstanceId me = new InstanceId(1);
StoreId storeId = newStoreIdForCurrentVersion();
HighAvailabilityMemberContext context = mock(typeof(HighAvailabilityMemberContext));
when(context.MyId).thenReturn(me);
AvailabilityGuard guard = mock(typeof(DatabaseAvailabilityGuard));
ObservedClusterMembers members = mock(typeof(ObservedClusterMembers));
ClusterMember masterMember = mock(typeof(ClusterMember));
when(masterMember.HARole).thenReturn("master");
when(masterMember.HasRole("master")).thenReturn(true);
when(masterMember.InstanceId).thenReturn(new InstanceId(2));
when(masterMember.StoreId).thenReturn(storeId);
ClusterMember self = new ClusterMember(me);
when(members.Members).thenReturn(Arrays.asList(self, masterMember));
when(members.CurrentMember).thenReturn(self);
DependencyResolver dependencyResolver = mock(typeof(DependencyResolver));
FileSystemAbstraction fs = mock(typeof(FileSystemAbstraction));
when(fs.FileExists(any(typeof(File)))).thenReturn(true);
when(dependencyResolver.ResolveDependency(typeof(FileSystemAbstraction))).thenReturn(fs);
when(dependencyResolver.ResolveDependency(typeof(Monitors))).thenReturn(new Monitors());
NeoStoreDataSource dataSource = mock(typeof(NeoStoreDataSource));
when(dataSource.DependencyResolver).thenReturn(dependencyResolver);
when(dataSource.StoreId).thenReturn(storeId);
when(dependencyResolver.ResolveDependency(typeof(NeoStoreDataSource))).thenReturn(dataSource);
when(dependencyResolver.ResolveDependency(typeof(TransactionIdStore))).thenReturn(new SimpleTransactionIdStore());
when(dependencyResolver.ResolveDependency(typeof(ObservedClusterMembers))).thenReturn(members);
UpdatePuller updatePuller = mock(typeof(UpdatePuller));
when(updatePuller.TryPullUpdates()).thenReturn(true);
when(dependencyResolver.ResolveDependency(typeof(UpdatePuller))).thenReturn(updatePuller);
ClusterMemberAvailability clusterMemberAvailability = mock(typeof(ClusterMemberAvailability));
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final TriggerableClusterMemberEvents events = new TriggerableClusterMemberEvents();
TriggerableClusterMemberEvents events = new TriggerableClusterMemberEvents();
Election election = mock(typeof(Election));
HighAvailabilityMemberStateMachine stateMachine = new HighAvailabilityMemberStateMachine(context, guard, members, events, election, NullLogProvider.Instance);
ClusterMembers clusterMembers = new ClusterMembers(members, stateMachine);
when(dependencyResolver.ResolveDependency(typeof(ClusterMembers))).thenReturn(clusterMembers);
stateMachine.Init();
stateMachine.Start();
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final org.neo4j.kernel.ha.DelegateInvocationHandler<org.neo4j.kernel.ha.com.master.Master> handler = new org.neo4j.kernel.ha.DelegateInvocationHandler<>(org.neo4j.kernel.ha.com.master.Master.class);
DelegateInvocationHandler <Master> handler = new DelegateInvocationHandler <Master>(typeof(Master));
MasterClientResolver masterClientResolver = mock(typeof(MasterClientResolver));
MasterClient masterClient = mock(typeof(MasterClient));
when(masterClient.ProtocolVersion).thenReturn(MasterClient214.PROTOCOL_VERSION);
when(masterClient.Handshake(anyLong(), any(typeof(StoreId)))).thenReturn(new ResponseAnonymousInnerClass(this, storeId, mock(typeof(ResourceReleaser)), handler));
when(masterClient.ToString()).thenReturn("TheExpectedMasterClient!");
when(masterClientResolver.Instantiate(anyString(), anyInt(), anyString(), any(typeof(Monitors)), any(typeof(StoreId)), any(typeof(LifeSupport)))).thenReturn(masterClient);
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final java.util.concurrent.CountDownLatch latch = new java.util.concurrent.CountDownLatch(2);
System.Threading.CountdownEvent latch = new System.Threading.CountdownEvent(2);
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final java.util.concurrent.atomic.AtomicBoolean switchedSuccessfully = new java.util.concurrent.atomic.AtomicBoolean();
AtomicBoolean switchedSuccessfully = new AtomicBoolean();
SwitchToSlave.Monitor monitor = new MonitorAnonymousInnerClass(this, latch, switchedSuccessfully);
Config config = Config.defaults(ClusterSettings.server_id, me.ToString());
DatabaseTransactionStats transactionCounters = mock(typeof(DatabaseTransactionStats));
when(transactionCounters.NumberOfActiveTransactions).thenReturn(0L);
PageCache pageCacheMock = mock(typeof(PageCache));
PagedFile pagedFileMock = mock(typeof(PagedFile));
when(pagedFileMock.LastPageId).thenReturn(1L);
when(pageCacheMock.Map(any(typeof(File)), anyInt())).thenReturn(pagedFileMock);
TransactionIdStore transactionIdStoreMock = mock(typeof(TransactionIdStore));
when(transactionIdStoreMock.LastCommittedTransaction).thenReturn(new TransactionId(0, 0, 0));
SwitchToSlaveCopyThenBranch switchToSlave = new SwitchToSlaveCopyThenBranch(DatabaseLayout.of(new File("")), NullLogService.Instance, mock(typeof(FileSystemAbstraction)), config, mock(typeof(HaIdGeneratorFactory)), handler, mock(typeof(ClusterMemberAvailability)), mock(typeof(RequestContextFactory)), mock(typeof(PullerFactory), RETURNS_MOCKS), Iterables.empty(), masterClientResolver, monitor, new Org.Neo4j.com.storecopy.StoreCopyClientMonitor_Adapter(), Suppliers.singleton(dataSource), Suppliers.singleton(transactionIdStoreMock), slave =>
{
SlaveServer mock = mock(typeof(SlaveServer));
when(mock.SocketAddress).thenReturn(new InetSocketAddress("localhost", 123));
return(mock);
}, updatePuller, pageCacheMock, mock(typeof(Monitors)), () => transactionCounters);
ComponentSwitcherContainer switcherContainer = new ComponentSwitcherContainer();
HighAvailabilityModeSwitcher haModeSwitcher = new HighAvailabilityModeSwitcher(switchToSlave, mock(typeof(SwitchToMaster)), election, clusterMemberAvailability, mock(typeof(ClusterClient)), storeSupplierMock(), me, switcherContainer, NeoStoreDataSourceSupplierMock(), NullLogService.Instance);
haModeSwitcher.Init();
haModeSwitcher.Start();
haModeSwitcher.ListeningAt(URI.create("http://localhost:12345"));
stateMachine.AddHighAvailabilityMemberListener(haModeSwitcher);
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final java.util.concurrent.atomic.AtomicReference<org.neo4j.kernel.ha.com.master.Master> ref = new java.util.concurrent.atomic.AtomicReference<>(null);
AtomicReference <Master> @ref = new AtomicReference <Master>(null);
//noinspection unchecked
AbstractComponentSwitcher <object> otherModeSwitcher = new AbstractComponentSwitcherAnonymousInnerClass(this, mock(typeof(DelegateInvocationHandler)), handler, latch, @ref);
switcherContainer.Add(otherModeSwitcher);
// When
events.SwitchToSlave(me);
// Then
latch.await();
assertTrue("mode switch failed", switchedSuccessfully.get());
Master actual = @ref.get();
// let's test the toString()s since there are too many wrappers of proxies
assertEquals(masterClient.ToString(), actual.ToString());
stateMachine.Stop();
stateMachine.Shutdown();
haModeSwitcher.Stop();
haModeSwitcher.Shutdown();
}