protected virtual DataSubscriptionResponseMessage Receive(DataSubscriptionRequestMessage message)
{
if (message.TransportInfo.OriginalSenderId.HasValue == false)
{
SystemMonitor.Error("Received a message with no original sender. Dropped.");
return null;
}
DataSourceStub.IImplementation implementation = Implementation;
if (message.SessionInfo.IsEmtpy)
{// General (un)subscription requestMessage, not specific to a sessionInformation.
if (message.Subscribe)
{
SystemMonitor.OperationError("Unexpected combination of empty session and subscribe request, ignored.");
}
else
{// Unsubscribe to each that has a orderInfo for this original sender.
lock (this)
{
foreach (CombinedDataSubscriptionInformation combined in _symbolsRunningSessions.Values)
{
if (combined.FullUnsubscribe(message.TransportInfo.OriginalSenderId.Value))
{// For every sessionInformation that has something
// Make sure to pass combined as parameter, otherwise the value is in foreach and chages before the thread starts.
GeneralHelper.FireAndForget(
delegate(CombinedDataSubscriptionInformation combinedValue)
{
if (implementation != null)
{// First allow the implementation to unsubscribe since it needs the combined dataDelivery.
implementation.SessionDataSubscriptionUpdate(combinedValue.SessionInformation.Info, message.Subscribe, message.Information);
}
}, combined);
}
}
}
}
}
else
{
if (_symbolsRunningSessions.ContainsKey(message.SessionInfo.Symbol) == false
|| _symbolsRunningSessions[message.SessionInfo.Symbol].SessionInformation.Info.Equals(message.SessionInfo) == false)
{
SystemMonitor.Warning("Subsribe request for non existing session.");
return new DataSubscriptionResponseMessage(message.SessionInfo, false);
}
CombinedDataSubscriptionInformation combined = GetUnsafeSessionSubscriptions(message.SessionInfo);
if (combined != null)
{
combined.HandleRequest(message.TransportInfo, message.Subscribe, message.Information);
if (implementation != null)
{
GeneralHelper.FireAndForget(delegate()
{
implementation.SessionDataSubscriptionUpdate(message.SessionInfo, message.Subscribe, message.Information);
});
}
}
else
{
SystemMonitor.OperationError("Combined subscription info not found.");
}
}
// Finalizing / responding section.
if (message.RequestResponse)
{
return new DataSubscriptionResponseMessage(message.SessionInfo, true);
}
return null;
}
public void UnInitialize()
{
StatusSynchronizationEnabled = false;
if (OperationalState == OperationalStateEnum.Operational)
{
DataSubscriptionRequestMessage request = new DataSubscriptionRequestMessage(DataSessionInfo.Empty, false, null);
request.RequestResponce = false;
SendResponding(SourceTransportInfo, request);
}
ChangeOperationalState(OperationalStateEnum.UnInitialized);
}
protected virtual DataSubscriptionResponseMessage Receive(DataSubscriptionRequestMessage message)
{
if (message.TransportInfo.OriginalSenderId.HasValue == false)
{
SystemMonitor.Error("Received a message with no original sender. Dropped.");
return null;
}
if (message.SessionInfo.IsEmtpy)
{// General (un)subscription requestMessage, not specific to a sessionInformation.
if (message.Subscribe)
{
SystemMonitor.OperationError("Unexpected combination of empty session and subscribe request, ignored.");
}
else
{// Unsubscribe to each that has a orderInfo for this original sender.
lock (this)
{
foreach (CombinedDataSubscriptionInformation combined in _dataSessions.Values)
{
if (combined.FullUnsubscribe(message.TransportInfo.OriginalSenderId.Value) == false)
{
SystemMonitor.OperationError("Failed to unsubscribe [" + message.TransportInfo.OriginalSenderId.Value.Id.Name + "].");
}
}
}
}
}
else
{
lock (this)
{
if (_dataSessions.ContainsKey(message.SessionInfo.Symbol) == false
|| _dataSessions[message.SessionInfo.Symbol].SessionInformation.Info.Equals(message.SessionInfo) == false)
{
SystemMonitor.Warning("Subsribe request for non existing session.");
return new DataSubscriptionResponseMessage(message.SessionInfo, false);
}
CombinedDataSubscriptionInformation combined = _dataSessions[message.SessionInfo.Symbol];
if (combined != null)
{
TracerHelper.Trace("Subscribing... " + message.TransportInfo.OriginalSenderId.Value.Id.Name);
combined.HandleRequest(message.TransportInfo, message.Subscribe, message.Information);
}
else
{
SystemMonitor.OperationError("Combined subscription info not found.");
}
}
}
// Finalizing / responding section.
if (message.RequestResponse)
{
return new DataSubscriptionResponseMessage(message.SessionInfo, true);
}
return null;
}
public bool SubscribeToData(DataSessionInfo session, bool subscribe, DataSubscriptionInfo info)
{
if (OperationalState != OperationalStateEnum.Operational)
{
return false;
}
DataSubscriptionRequestMessage request = new DataSubscriptionRequestMessage(session, subscribe, info);
DataSessionResponceMessage responce = SendAndReceiveResponding<DataSessionResponceMessage>(SourceTransportInfo, request);
return responce != null && responce.OperationResult;
}