public ServerActor(bool logging = false)
{
allActors = new List <IActorRef>();
olds = new HashSet <IActorRef>();
reliableSuccessors = new List <IActorRef>();
predecessors = new List <IActorRef>();
faultyServers = new HashSet <IActorRef>();
failureNotifications = new HashSet <VertexPair>();
trackingGraphs = new Dictionary <IActorRef, TrackingGraph>();
pendingMessages = new Queue <Messages.Abroadcast>();
stageDeliveredMsgs = new HashSet <Messages.Rbroadcast>();
stageReceivedFrom = new HashSet <IActorRef>();
stageMsg = null;
currentRound = 0;
stageNewMemberFlag = false;
logger = null;
if (logging)
{
logger = Context.ActorOf <LogActor>();
}
Receive <Messages.InitServer>(Initialize);
ReceiveAny(_ => Stash.Stash());
}
public void NewMessageToBroadcast(Messages.Abroadcast m)
{
pendingMessages.Enqueue(m);
if (stageMsg == null && pendingMessages.Count >= ACTOR_CAP)
{
SendMyMessage();
}
}
public void NextStagePreparing()
{
// If Server does not deliver a message it will be regarded as failed.
List <IActorRef> keysToDelete = new List <IActorRef>();
foreach (var key in trackingGraphs.Keys)
{
if (!stageReceivedFrom.Contains(key))
{
keysToDelete.Add(key);
}
}
foreach (var key in keysToDelete)
{
trackingGraphs.Remove(key);
reliableSuccessors.Remove(key);
Context.Unwatch(key);
}
foreach (var err in failureNotifications)
{
if (trackingGraphs.ContainsKey(err.V1))
{
foreach (var actor in reliableSuccessors)
{
actor.Tell(new Messages.IndirectFailureNotification(err.V1), err.V2);
}
}
}
stageDeliveredMsgs.Clear();
stageReceivedFrom.Clear();
foreach (var pair in trackingGraphs)
{
if (pair.Key != Self)
{
pair.Value.Reset();
}
}
currentRound++;
stageMsg = null;
if (stageNewMemberFlag)
{
olds = new HashSet <IActorRef>(allActors);
NewMemberReconfigure(newMember);
SendLogMsg("New membership request.");
}
Stash.UnstashAll();
if (pendingMessages.Count != 0 && pendingMessages.Count >= ACTOR_CAP)
{
SendMyMessage();
}
}
public void SendMyMessage()
{
timer.Restart();
Messages.Rbroadcast rbm;
if (pendingMessages.Count == 0)
{
stageMsg = EMPTY_MSG;
rbm = new Messages.Rbroadcast(stageMsg, currentRound);
}
else
{
var list = new List <Messages.Abroadcast>();
int c = ACTOR_CAP;
if (pendingMessages.Count > ACTOR_CAP)
{
c *= 3;
}
for (int i = 0; i < c && i < pendingMessages.Count; i++)
{
list.Add(pendingMessages.Dequeue());
}
stageMsg = new Messages.Abroadcast(list.AsReadOnly());
rbm = new Messages.Rbroadcast(stageMsg, currentRound);
}
foreach (var s in reliableSuccessors)
{
s.Tell(rbm);
}
stageDeliveredMsgs.Add(rbm);
stageReceivedFrom.Add(Self);
CheckTermination();
}
public Rbroadcast(Abroadcast m, int s)
{
Message = m;
Round = s;
Id = Guid.NewGuid();
}