private bool UpdateSubscribtion(string id, IEnumerable <string> variablePath, bool remove, ref int subscriptions)
{
if (variablePath.Any())
{
var key = variablePath.First();
SubscriptionTree entry;
if (!Childs.TryGetValue(key, out entry) && !remove)
{
entry = new SubscriptionTree
{
Name = key,
Parent = this
};
if (!Childs.TryAdd(key, entry))
{
entry = Childs[key];
}
}
return(entry != null?entry.UpdateSubscribtion(id, variablePath.Skip(1), remove, ref subscriptions) : false);
}
else
{
if (remove)
{
object o;
if (Subscribers.TryRemove(id, out o))
{
Interlocked.Decrement(ref subscriptions);
return(true);
}
return(false);
}
else
{
if (Subscribers.TryAdd(id, null))
{
Interlocked.Increment(ref subscriptions);
return(true);
}
return(false);
}
}
}