private static void PruneOldBreweries()
{
// Any brewery not heard from in > 15 minutes is awol, assume it's left.
List <Brewery> deadBreweries = new List <Brewery>();
foreach (Brewery brewery in s_breweries.Values)
{
if (DateTime.Now - brewery.LastMessage > TimeSpan.FromMinutes(15))
{
deadBreweries.Add(brewery);
}
}
foreach (Brewery brewery in deadBreweries)
{
Brewery tmp = null;
if (s_breweries.TryRemove(brewery.ID, out tmp))
{
Info("{0} has not been heard from in over 15 minutes, pruning", tmp.ID);
OnBreweryLeave?.Invoke(null, new BreweryTopologyEventArgs()
{
Brewery = tmp
});
}
}
}
private static void HandleIncomingBreweryMessage(BreweryMessage message)
{
IncomingMessage incomingMessage = message as IncomingMessage;
if (message != null)
{
// If the message is goodbye, get and remove from list
if (incomingMessage.MessageType == BreweryMessageType.Goodbye)
{
Info("Goodbye from {0}", incomingMessage.SourceBreweryID);
// Only signal if we already knew about it
Brewery targetBrewery = null;
if (s_breweries.TryRemove(incomingMessage.SourceBreweryID, out targetBrewery))
{
targetBrewery.HandleIncomingMessage(message);
OnBreweryLeave?.Invoke(null, new BreweryTopologyEventArgs()
{
Brewery = targetBrewery
});
}
}
else
{
bool isNew = false;
Brewery targetBrewery = s_breweries.GetOrAdd(incomingMessage.SourceBreweryID, (key) =>
{
// We add to the dictionary, but note that its new
isNew = true;
Debug("Message from previously unknown ID: {0} => {1}", incomingMessage.SourceBreweryID, incomingMessage.MessageType);
return(new Brewery(key));
});
// Fire event outside of dictionary add, as delegate may want the dictionary elemetn
if (isNew)
{
Info("New brewery discovered, sending full refresh: {0}", targetBrewery.ID);
targetBrewery.OnRefreshComplete += NewBreweryRefreshComplete;
targetBrewery.FullRefreshAsync();
}
// Deliver message to the target brewery object - TBD
targetBrewery.HandleIncomingMessage(message);
}
}
PruneOldBreweries();
}