internal void SetState(RaftEngineState state)
{
if (state == State)
{
return;
}
if (State == RaftEngineState.Leader)
{
_leaderSelectedEvent.Reset();
}
var oldState = State;
if (StateBehavior != null)
{
StateBehavior.Dispose();
}
switch (state)
{
case RaftEngineState.Follower:
case RaftEngineState.FollowerAfterStepDown:
StateBehavior = new FollowerStateBehavior(this, state == RaftEngineState.FollowerAfterStepDown);
break;
case RaftEngineState.CandidateByRequest:
StateBehavior = new CandidateStateBehavior(this, true);
break;
case RaftEngineState.Candidate:
StateBehavior = new CandidateStateBehavior(this, false);
StateBehavior.HandleTimeout();
break;
case RaftEngineState.SnapshotInstallation:
StateBehavior = new SnapshotInstallationStateBehavior(this);
break;
case RaftEngineState.Leader:
StateBehavior = new LeaderStateBehavior(this);
CurrentLeader = Name;
OnElectedAsLeader();
break;
case RaftEngineState.SteppingDown:
StateBehavior = new SteppingDownStateBehavior(this);
CurrentLeader = Name;
break;
default:
throw new ArgumentOutOfRangeException(state.ToString());
}
Debug.Assert(StateBehavior != null, "StateBehavior != null");
OnStateChanged(state);
_log.Debug("{0} ==> {1}", oldState, state);
}
internal void SetState(RaftEngineState state)
{
if (state == State)
{
return;
}
if (State == RaftEngineState.Leader)
{
_leaderSelectedEvent.Reset();
}
var oldState = State;
if (StateBehavior != null)
{
StateBehavior.Dispose();
}
switch (state)
{
case RaftEngineState.Follower:
case RaftEngineState.FollowerAfterStepDown:
StateBehavior = new FollowerStateBehavior(this, state == RaftEngineState.FollowerAfterStepDown);
break;
case RaftEngineState.CandidateByRequest:
StateBehavior = new CandidateStateBehavior(this, true);
//setting state before calling election because the state may change to leader before
//we set it to CandidateByRequest
AssertStateAndRaiseStateChanged(state, oldState);
StateBehavior.HandleTimeout();
return;
case RaftEngineState.Candidate:
StateBehavior = new CandidateStateBehavior(this, false);
//setting state before calling election because the state may change to leader before
//we set it to CandidateStateBehavior
AssertStateAndRaiseStateChanged(state, oldState);
StateBehavior.HandleTimeout();
return;
case RaftEngineState.SnapshotInstallation:
StateBehavior = new SnapshotInstallationStateBehavior(this);
break;
case RaftEngineState.Leader:
StateBehavior = new LeaderStateBehavior(this);
CurrentLeader = Name;
OnElectedAsLeader();
break;
case RaftEngineState.SteppingDown:
StateBehavior = new SteppingDownStateBehavior(this);
CurrentLeader = Name;
break;
default:
throw new ArgumentOutOfRangeException(state.ToString());
}
AssertStateAndRaiseStateChanged(state, oldState);
}
