public AppendEntriesResponse Handle(AppendEntries appendEntries)
{
var response = _rules.AppendEntriesTermIsLessThanCurrentTerm(appendEntries, CurrentState);
if (response.shouldReturn)
{
return(response.appendEntriesResponse);
}
response = _rules.LogDoesntContainEntryAtPreviousLogIndexWhoseTermMatchesPreviousLogTerm(appendEntries, _log, CurrentState);
if (response.shouldReturn)
{
return(response.appendEntriesResponse);
}
_rules.DeleteAnyConflictsInLog(appendEntries, _log);
_rules.ApplyEntriesToLog(appendEntries, _log);
var commitIndexAndLastApplied = _rules.CommitIndexAndLastApplied(appendEntries, _log, CurrentState);
ApplyToStateMachine(commitIndexAndLastApplied.commitIndex, commitIndexAndLastApplied.lastApplied);
SetLeaderId(appendEntries);
AppendEntriesTermIsGreaterThanCurrentTerm(appendEntries);
return(new AppendEntriesResponse(CurrentState.CurrentTerm, true));
}
public async Task <AppendEntriesResponse> Handle(AppendEntries appendEntries)
{
var response = _rules.AppendEntriesTermIsLessThanCurrentTerm(appendEntries, CurrentState);
if (response.shouldReturn)
{
return(response.appendEntriesResponse);
}
response = await _rules.LogDoesntContainEntryAtPreviousLogIndexWhoseTermMatchesPreviousLogTerm(appendEntries, _log, CurrentState);
if (response.shouldReturn)
{
return(response.appendEntriesResponse);
}
await _rules.DeleteAnyConflictsInLog(appendEntries, _log);
await _rules.ApplyEntriesToLog(appendEntries, _log);
var commitIndexAndLastApplied = await _rules.CommitIndexAndLastApplied(appendEntries, _log, CurrentState);
await ApplyToStateMachine(commitIndexAndLastApplied.commitIndex, commitIndexAndLastApplied.lastApplied, appendEntries);
SetLeaderId(appendEntries);
_messagesSinceLastElectionExpiry++;
return(new AppendEntriesResponse(CurrentState.CurrentTerm, true));
}
private void AppendEntriesTermIsGreaterThanCurrentTerm(AppendEntries appendEntries)
{
if (appendEntries.Term > CurrentState.CurrentTerm)
{
CurrentState = new CurrentState(CurrentState.Id, appendEntries.Term, CurrentState.VotedFor,
CurrentState.CommitIndex, CurrentState.LastApplied, CurrentState.LeaderId);
BecomeFollower();
}
}
private void ApplyToStateMachine(int commitIndex, int lastApplied, AppendEntries appendEntries)
{
while (commitIndex > lastApplied)
{
lastApplied++;
var log = _log.Get(lastApplied);
_fsm.Handle(log);
}
CurrentState = new CurrentState(CurrentState.Id, appendEntries.Term,
CurrentState.VotedFor, commitIndex, lastApplied, CurrentState.LeaderId);
}
public async Task <AppendEntriesResponse> Handle(AppendEntries appendEntries)
{
if (appendEntries.Term > CurrentState.CurrentTerm)
{
var response = await _rules.CommitIndexAndLastApplied(appendEntries, _log, CurrentState);
await ApplyToStateMachine(appendEntries, response.commitIndex, response.lastApplied);
SetLeaderId(appendEntries);
_node.BecomeFollower(CurrentState);
return(new AppendEntriesResponse(CurrentState.CurrentTerm, true));
}
return(new AppendEntriesResponse(CurrentState.CurrentTerm, false));
}
public AppendEntriesResponse Handle(AppendEntries appendEntries)
{
return(State.Handle(appendEntries));
}
private void SetLeaderId(AppendEntries appendEntries)
{
CurrentState = new CurrentState(CurrentState.Id, CurrentState.CurrentTerm, CurrentState.VotedFor, CurrentState.CommitIndex, CurrentState.LastApplied, appendEntries.LeaderId);
}
public async Task <AppendEntriesResponse> Handle(AppendEntries appendEntries)
{
return(await State.Handle(appendEntries));
}
public AppendEntriesResponse Request(AppendEntries appendEntries)
{
throw new NotImplementedException();
}
