//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldNotAllowTruncationAtCommit() throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ShouldNotAllowTruncationAtCommit()
{
// given
long commitIndex = 5;
long localTermForAllEntries = 1L;
Outcome outcome = mock(typeof(Outcome));
ReadableRaftLog logMock = mock(typeof(ReadableRaftLog));
when(logMock.ReadEntryTerm(anyLong())).thenReturn(localTermForAllEntries); // for simplicity, all entries are at term 1
when(logMock.AppendIndex()).thenReturn(commitIndex);
ReadableRaftState state = mock(typeof(ReadableRaftState));
when(state.EntryLog()).thenReturn(logMock);
when(state.CommitIndex()).thenReturn(commitIndex);
// when - then
try
{
Appending.HandleAppendEntriesRequest(state, outcome, new Org.Neo4j.causalclustering.core.consensus.RaftMessages_AppendEntries_Request(_aMember, localTermForAllEntries, commitIndex - 1, localTermForAllEntries, new RaftLogEntry[] { new RaftLogEntry(localTermForAllEntries + 1, ReplicatedInteger.valueOf(2)) }, commitIndex + 3), NullLog.Instance);
fail("Appending should not allow truncation at or before the commit index");
}
catch (System.InvalidOperationException)
{
// ok
}
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldNotAttemptToTruncateAtIndexBeforeTheLogPrevIndex() throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ShouldNotAttemptToTruncateAtIndexBeforeTheLogPrevIndex()
{
// given
// a log with prevIndex and prevTerm set
ReadableRaftLog logMock = mock(typeof(ReadableRaftLog));
long prevIndex = 5;
long prevTerm = 5;
when(logMock.PrevIndex()).thenReturn(prevIndex);
when(logMock.ReadEntryTerm(prevIndex)).thenReturn(prevTerm);
// and which also properly returns -1 as the term for an unknown entry, in this case prevIndex - 2
when(logMock.ReadEntryTerm(prevIndex - 2)).thenReturn(-1L);
// also, a state with a given commitIndex, obviously ahead of prevIndex
long commitIndex = 10;
ReadableRaftState state = mock(typeof(ReadableRaftState));
when(state.EntryLog()).thenReturn(logMock);
when(state.CommitIndex()).thenReturn(commitIndex);
// which is also the append index
when(logMock.AppendIndex()).thenReturn(commitIndex);
// when
// an appendEntriesRequest arrives for appending entries before the prevIndex (for whatever reason)
Outcome outcome = mock(typeof(Outcome));
Appending.HandleAppendEntriesRequest(state, outcome, new Org.Neo4j.causalclustering.core.consensus.RaftMessages_AppendEntries_Request(_aMember, prevTerm, prevIndex - 2, prevTerm, new RaftLogEntry[] { new RaftLogEntry(prevTerm, ReplicatedInteger.valueOf(2)) }, commitIndex + 3), NullLog.Instance);
// then
// there should be no truncate commands. Actually, the whole thing should be a no op
verify(outcome, never()).addLogCommand(any());
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldPerformTruncation() throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ShouldPerformTruncation()
{
// when
// we have a log appended up to appendIndex, and committed somewhere before that
long appendIndex = 5;
long localTermForAllEntries = 1L;
Outcome outcome = mock(typeof(Outcome));
ReadableRaftLog logMock = mock(typeof(ReadableRaftLog));
when(logMock.ReadEntryTerm(anyLong())).thenReturn(localTermForAllEntries); // for simplicity, all entries are at term 1
when(logMock.AppendIndex()).thenReturn(appendIndex);
ReadableRaftState state = mock(typeof(ReadableRaftState));
when(state.EntryLog()).thenReturn(logMock);
when(state.CommitIndex()).thenReturn(appendIndex - 3);
// when
// the leader asks to append after the commit index an entry that mismatches on term
Appending.HandleAppendEntriesRequest(state, outcome, new Org.Neo4j.causalclustering.core.consensus.RaftMessages_AppendEntries_Request(_aMember, localTermForAllEntries, appendIndex - 2, localTermForAllEntries, new RaftLogEntry[] { new RaftLogEntry(localTermForAllEntries + 1, ReplicatedInteger.valueOf(2)) }, appendIndex + 3), NullLog.Instance);
// then
// we must produce a TruncateLogCommand at the earliest mismatching index
verify(outcome, times(1)).addLogCommand(argThat(new LogCommandMatcher(appendIndex - 1)));
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: private static void respondToPreVoteRequest(org.neo4j.causalclustering.core.consensus.state.ReadableRaftState state, org.neo4j.causalclustering.core.consensus.outcome.Outcome outcome, org.neo4j.causalclustering.core.consensus.RaftMessages_PreVote_Request voteRequest, org.neo4j.function.ThrowingBooleanSupplier<java.io.IOException> willVoteFor) throws java.io.IOException
private static void RespondToPreVoteRequest(ReadableRaftState state, Outcome outcome, Org.Neo4j.causalclustering.core.consensus.RaftMessages_PreVote_Request voteRequest, ThrowingBooleanSupplier <IOException> willVoteFor)
{
if (voteRequest.Term() > state.Term())
{
outcome.NextTerm = voteRequest.Term();
}
outcome.AddOutgoingMessage(new Org.Neo4j.causalclustering.core.consensus.RaftMessages_Directed(voteRequest.From(), new Org.Neo4j.causalclustering.core.consensus.RaftMessages_PreVote_Response(state.Myself(), outcome.Term, willVoteFor.AsBoolean)));
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: private static boolean shouldVoteFor(org.neo4j.causalclustering.core.consensus.state.ReadableRaftState state, org.neo4j.causalclustering.core.consensus.outcome.Outcome outcome, org.neo4j.causalclustering.core.consensus.RaftMessages_AnyVote_Request voteRequest, boolean committedToVotingForAnother, org.neo4j.logging.Log log) throws java.io.IOException
private static bool ShouldVoteFor(ReadableRaftState state, Outcome outcome, Org.Neo4j.causalclustering.core.consensus.RaftMessages_AnyVote_Request voteRequest, bool committedToVotingForAnother, Log log)
{
long requestTerm = voteRequest.Term();
MemberId candidate = voteRequest.Candidate();
long requestLastLogTerm = voteRequest.LastLogTerm();
long requestLastLogIndex = voteRequest.LastLogIndex();
long contextTerm = outcome.Term;
long contextLastAppended = state.EntryLog().appendIndex();
long contextLastLogTerm = state.EntryLog().readEntryTerm(contextLastAppended);
return(ShouldVoteFor(candidate, contextTerm, requestTerm, contextLastLogTerm, requestLastLogTerm, contextLastAppended, requestLastLogIndex, committedToVotingForAnother, log));
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: static void handleVoteRequest(org.neo4j.causalclustering.core.consensus.state.ReadableRaftState state, org.neo4j.causalclustering.core.consensus.outcome.Outcome outcome, org.neo4j.causalclustering.core.consensus.RaftMessages_Vote_Request voteRequest, org.neo4j.logging.Log log) throws java.io.IOException
internal static void HandleVoteRequest(ReadableRaftState state, Outcome outcome, Org.Neo4j.causalclustering.core.consensus.RaftMessages_Vote_Request voteRequest, Log log)
{
if (voteRequest.Term() > state.Term())
{
outcome.NextTerm = voteRequest.Term();
outcome.VotedFor = null;
}
bool votedForAnother = outcome.VotedFor != null && !outcome.VotedFor.Equals(voteRequest.Candidate());
bool willVoteForCandidate = ShouldVoteFor(state, outcome, voteRequest, votedForAnother, log);
if (willVoteForCandidate)
{
outcome.VotedFor = voteRequest.From();
outcome.RenewElectionTimeout();
}
outcome.AddOutgoingMessage(new Org.Neo4j.causalclustering.core.consensus.RaftMessages_Directed(voteRequest.From(), new Org.Neo4j.causalclustering.core.consensus.RaftMessages_Vote_Response(state.Myself(), outcome.Term, willVoteForCandidate)));
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: static void beat(org.neo4j.causalclustering.core.consensus.state.ReadableRaftState state, org.neo4j.causalclustering.core.consensus.outcome.Outcome outcome, org.neo4j.causalclustering.core.consensus.RaftMessages_Heartbeat request, org.neo4j.logging.Log log) throws java.io.IOException
internal static void Beat(ReadableRaftState state, Outcome outcome, Org.Neo4j.causalclustering.core.consensus.RaftMessages_Heartbeat request, Log log)
{
if (request.LeaderTerm() < state.Term())
{
return;
}
outcome.PreElection = false;
outcome.NextTerm = request.LeaderTerm();
outcome.Leader = request.From();
outcome.LeaderCommit = request.CommitIndex();
outcome.AddOutgoingMessage(new Org.Neo4j.causalclustering.core.consensus.RaftMessages_Directed(request.From(), new Org.Neo4j.causalclustering.core.consensus.RaftMessages_HeartbeatResponse(state.Myself())));
if (!Follower.LogHistoryMatches(state, request.CommitIndex(), request.CommitIndexTerm()))
{
return;
}
Follower.CommitToLogOnUpdate(state, request.CommitIndex(), request.CommitIndex(), outcome);
}
internal Handler(ReadableRaftState ctx, Log log)
{
this.Ctx = ctx;
this.Log = log;
this.Outcome = new Outcome(CANDIDATE, ctx);
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public org.neo4j.causalclustering.core.consensus.outcome.Outcome handle(org.neo4j.causalclustering.core.consensus.RaftMessages_RaftMessage message, org.neo4j.causalclustering.core.consensus.state.ReadableRaftState ctx, org.neo4j.logging.Log log) throws java.io.IOException
public override Outcome Handle(Org.Neo4j.causalclustering.core.consensus.RaftMessages_RaftMessage message, ReadableRaftState ctx, Log log)
{
return(message.Dispatch(new Handler(ctx, log)));
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: static void declinePreVoteRequest(org.neo4j.causalclustering.core.consensus.state.ReadableRaftState state, org.neo4j.causalclustering.core.consensus.outcome.Outcome outcome, org.neo4j.causalclustering.core.consensus.RaftMessages_PreVote_Request voteRequest) throws java.io.IOException
internal static void DeclinePreVoteRequest(ReadableRaftState state, Outcome outcome, Org.Neo4j.causalclustering.core.consensus.RaftMessages_PreVote_Request voteRequest)
{
RespondToPreVoteRequest(state, outcome, voteRequest, () => false);
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: static void handlePreVoteRequest(org.neo4j.causalclustering.core.consensus.state.ReadableRaftState state, org.neo4j.causalclustering.core.consensus.outcome.Outcome outcome, org.neo4j.causalclustering.core.consensus.RaftMessages_PreVote_Request voteRequest, org.neo4j.logging.Log log) throws java.io.IOException
internal static void HandlePreVoteRequest(ReadableRaftState state, Outcome outcome, Org.Neo4j.causalclustering.core.consensus.RaftMessages_PreVote_Request voteRequest, Log log)
{
ThrowingBooleanSupplier <IOException> willVoteForCandidate = () => ShouldVoteFor(state, outcome, voteRequest, false, log);
RespondToPreVoteRequest(state, outcome, voteRequest, willVoteForCandidate);
}
