/// <summary>
/// Perform event subscription (Subscribe), always asynchronous.
/// </summary>
public bool Subscribe <TType>(SuperPoolClient subscriber,
EventSubscriptionRequest request, out TType resultValue)
where TType : class
{
SuperPoolProxyCall call;
bool result = Call <TType>(subscriber, out resultValue, out call);
call.SubscriptionRequest = request;
return(result);
}
/// <summary>
/// Perform an event subscription.
/// All subscribes are expected to be asynchronous,
/// and executed agains the actual pool only.
/// </summary>
public TType Subscribe <TType>(EventSubscriptionRequest subscription)
where TType : class
{
Matrix.Framework.SuperPool.Core.SuperPool pool = _superPool;
if (pool == null)
{
return(null);
}
TType result;
if (pool.Subscribe <TType>(this, subscription, out result))
{
return(result);
}
return(null);
}
public TType Subscribe <TType>(EventSubscriptionRequest subscription) where TType : class
{
SuperPool superPool = this._superPool;
if (superPool == null)
{
return(default(TType));
}
TType resultValue;
if (superPool.Subscribe <TType>(this, subscription, out resultValue))
{
return(resultValue);
}
else
{
return(default(TType));
}
}
void ISuperPoolIntercom.ProcessSubscriptionUpdate(EventSubscriptionRequest subscriptionRequest)
{
// Filter request, since it may not be related at all to this super pool.
bool clientFound = false;
ReadOnlyCollection <ClientId> sources = subscriptionRequest.EventsSources;
if (sources == null)
{// Null value indicates a subscirption to all possible sources.
clientFound = true;
}
else
{
foreach (ClientId id in sources)
{
if (_clients.ContainsKey(id))
{
clientFound = true;
break;
}
}
}
// Check the sources and the SenderId, before dumping event.
if (clientFound == false && subscriptionRequest.SenderId.IsLocalClientId == false)
{
#if Matrix_Diagnostics
InstanceMonitor.Info("Subscription request received [" + subscriptionRequest.ToString() + "], ignored since not related.");
#endif
return;
}
else
{
#if Matrix_Diagnostics
InstanceMonitor.Info("Subscription request received [" + subscriptionRequest.ToString() + "] and processing...");
#endif
}
EventSubscriptionInfo methodSubscription = null;
if (_eventSubscriptions.TryGetValue(subscriptionRequest.ExtendedEventName, out methodSubscription) == false)
{
lock (_syncRoot)
{
if (_eventSubscriptions.TryGetValue(subscriptionRequest.ExtendedEventName, out methodSubscription) == false)
{// Add a new method subscription info.
methodSubscription = new EventSubscriptionInfo(subscriptionRequest.ExtendedEventName);
_eventSubscriptions.Add(subscriptionRequest.ExtendedEventName, methodSubscription);
}
}
}
if (methodSubscription == null)
{
#if Matrix_Diagnostics
InstanceMonitor.OperationError("Failed to find method subscription, subscription failed.");
#endif
return;
}
// Apply the requests locally.
methodSubscription.SubscriptionUpdate(subscriptionRequest);
}
/// <summary>
/// Handle event subscription (Proxy.Event.Subscribe)
/// </summary>
protected override void ProcessReceiveEventSubscription(int methodId, Delegate delegateInstance, bool isAdd)
{
SuperPoolProxyCall pendingCall = null;
if (_pendingThreadsCalls.TryGetValue(Thread.CurrentThread.ManagedThreadId, out pendingCall) == false)
{
#if Matrix_Diagnostics
InstanceMonitor.OperationError("Failed to find corresponding thread proxy call information.");
#endif
return;
}
EventSubscriptionRequest subscriptionRequest = pendingCall.SubscriptionRequest;
if (subscriptionRequest == null)
{
#if Matrix_Diagnostics
InstanceMonitor.OperationError("Failed to find corresponding subscription requests, event subscription failed.");
#endif
return;
}
if (pendingCall.Sender == null || pendingCall.Sender.Id == null)
{
#if Matrix_Diagnostics
InstanceMonitor.OperationError("Failed to establish subscription sender information, subscription failed.");
#endif
return;
}
if (delegateInstance.Target != pendingCall.Sender.Source)
{
#if Matrix_Diagnostics
InstanceMonitor.Error("Only a message super pool client source can subscribe to events.");
#endif
return;
}
ProxyTypeBuilder builder = ProxyTypeBuilder;
if (builder == null)
{
#if Matrix_Diagnostics
InstanceMonitor.OperationError("Failed to find proxy type builder, event subscription failed.");
#endif
return;
}
GeneratedMethodInfo generatedMethodInfo = builder.GetMethodInfoById(methodId);
if (generatedMethodInfo == null)
{
#if Matrix_Diagnostics
InstanceMonitor.OperationError("Failed to find method [id, " + methodId + "] info, event subscription failed.");
#endif
return;
}
if (string.IsNullOrEmpty(generatedMethodInfo.EventName))
{
generatedMethodInfo.EventName = GeneralHelper.GetEventExtendedNameByMethod(generatedMethodInfo.GetMethodInfo(), false, true);
}
// generatedMethodInfo.GetMethodInfo() >> I2.add_AEVent
string extendedEventName = generatedMethodInfo.EventName;
MethodInfo eventAddMethodInfo = generatedMethodInfo.GetMethodInfo();
// *IMPORTANT* the Call<> will cause the currently used pendingCall to be repopulated with information,
// so we ned to extract the *sender id* BEFORE calling the actual Call(), since it will change the
// pendingCall instance immediately.
subscriptionRequest.SenderId = pendingCall.Sender.Id;
subscriptionRequest.ExtendedEventName = extendedEventName;
subscriptionRequest.IsAdd = isAdd;
//subscriptionRequest.EventAddMethodInfo = eventAddMethodInfo;
subscriptionRequest.DelegateInstanceMethodInfo = delegateInstance.Method;
// Process locally.
((ISuperPoolIntercom)this).ProcessSubscriptionUpdate(subscriptionRequest);
SuperPoolClient mainClient = IntercomClient;
if (mainClient == null)
{
#if Matrix_Diagnostics
InstanceMonitor.Error("Failed to obtain super pool main intercom client, so new client handling has failed.");
#endif
}
else
{
// Notify other connected super pools of this subcription,
// since the subscribee(s) may be attached on them.
// *pendingCall swap done here, make sure to not use it on or after this line*
mainClient.CallAll <ISuperPoolIntercom>().ProcessSubscriptionUpdate(subscriptionRequest);
}
}
