//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 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 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 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_AppendEntries_Request req) throws java.io.IOException public override Outcome Handle(Org.Neo4j.causalclustering.core.consensus.RaftMessages_AppendEntries_Request req) { if (req.LeaderTerm() < Ctx.term()) { Org.Neo4j.causalclustering.core.consensus.RaftMessages_AppendEntries_Response appendResponse = new Org.Neo4j.causalclustering.core.consensus.RaftMessages_AppendEntries_Response(Ctx.myself(), Ctx.term(), false, req.PrevLogIndex(), Ctx.entryLog().appendIndex()); Outcome.addOutgoingMessage(new Org.Neo4j.causalclustering.core.consensus.RaftMessages_Directed(req.From(), appendResponse)); return(Outcome); } Outcome.NextRole = FOLLOWER; Log.info("Moving to FOLLOWER state after receiving append entries request from %s at term %d (I am at %d)n", req.From(), req.LeaderTerm(), Ctx.term()); Appending.HandleAppendEntriesRequest(Ctx, Outcome, req, Log); return(Outcome); }
//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_AppendEntries_Request req) throws java.io.IOException public override Outcome Handle(Org.Neo4j.causalclustering.core.consensus.RaftMessages_AppendEntries_Request req) { if (req.LeaderTerm() < Ctx.term()) { Org.Neo4j.causalclustering.core.consensus.RaftMessages_AppendEntries_Response appendResponse = new Org.Neo4j.causalclustering.core.consensus.RaftMessages_AppendEntries_Response(Ctx.myself(), Ctx.term(), false, -1, Ctx.entryLog().appendIndex()); Outcome.addOutgoingMessage(new Org.Neo4j.causalclustering.core.consensus.RaftMessages_Directed(req.From(), appendResponse)); return(Outcome); } else if (req.LeaderTerm() == Ctx.term()) { throw new System.InvalidOperationException("Two leaders in the same term."); } else { // There is a new leader in a later term, we should revert to follower. (§5.1) StepDownToFollower(Outcome, Ctx); Log.info("Moving to FOLLOWER state after receiving append request at term %d (my term is " + "%d) from %s", req.LeaderTerm(), Ctx.term(), req.From()); Appending.HandleAppendEntriesRequest(Ctx, Outcome, req, Log); return(Outcome); } }
//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_AppendEntries_Request request) throws java.io.IOException public override Outcome Handle(Org.Neo4j.causalclustering.core.consensus.RaftMessages_AppendEntries_Request request) { Appending.HandleAppendEntriesRequest(Ctx, Outcome, request, Log); return(Outcome); }