/// <summary>
/// Sends the specified <paramref name="message" /> to the publisher identified by handle <paramref name="to" />.<br />
/// This is used by subscribers to send messages directly to a certain publisher of an event.<br />
/// However, it is not guaranteed, that the publisher is a) subscribed to application messages and b) can interpret this specific message type
/// </summary>
/// <param name="message">The message.</param>
/// <param name="to">The receiver identified by a subscription handle</param>
/// <param name="sender">The sender instance.</param>
public static bool Message(ApplicationMessage message, SubscriptionHandle to, object sender)
{
//TODO check if sender is subscriber
_log.DebugFormat("New application message from {0} to {1}", message.Sender, to);
message.Handle = to;
/*Check if subscription is remote or local
* if local: pass it to local module
* if remote: serialize, wrap in Message, send
*/
if (to is RemoteSubscriptionHandle)
{
_log.Debug("Sending message to remote receiver");
int nodeId = EllaConfiguration.Instance.NodeId;
RemoteSubscriptionHandle h = (RemoteSubscriptionHandle)to;
if (h.PublisherNodeID == nodeId)
{
message.Sender = EllaModel.Instance.GetPublisherId(sender);
}
else if (h.SubscriberNodeID == nodeId)
{
message.Sender = EllaModel.Instance.GetSubscriberId(sender);
}
return(Networking.SendApplicationMessage(message, to as RemoteSubscriptionHandle));
}
else
{
int publisherId = EllaModel.Instance.GetPublisherId(sender);
int subscriberId = EllaModel.Instance.GetSubscriberId(sender);
bool senderIsPublisher = false;
_log.Debug("Delivering message locally");
//publisher sends msg to subscriber
if (to.PublisherId == publisherId)
{
message.Sender = publisherId;
senderIsPublisher = true;
}
//subscriber sends msg to publisher
else if (to.SubscriberId == subscriberId)
{
message.Sender = subscriberId;
}
return(DeliverApplicationMessage(message, senderIsPublisher));
}
}
/// <summary>
/// Replies to a previously received message
/// </summary>
/// <param name="reply">The reply message to be sent</param>
/// <param name="inReplyTo">The message in reply to (which was originally received).</param>
/// <param name="sender">The sender instance.</param>
/// <returns></returns>
public static bool Reply(ApplicationMessage reply, ApplicationMessage inReplyTo, object sender)
{
reply.Handle = inReplyTo.Handle;
_log.DebugFormat("Delivering reply message {0} in reply to {1} from {2}", reply, inReplyTo, reply.Sender);
_log.Debug("Delivering reply locally");
if (inReplyTo.Handle.PublisherId == inReplyTo.Sender)
{
Publisher publisher = EllaModel.Instance.GetPublisher(inReplyTo.Sender);
reply.Sender = EllaModel.Instance.GetSubscriberId(sender);
if (inReplyTo.Handle is RemoteSubscriptionHandle)
{
_log.Debug("Delivering reply to remote receiver");
return(Networking.SendApplicationMessage(reply, inReplyTo.Handle as RemoteSubscriptionHandle,
isReply: true));
}
else
{
DeliverMessage(reply, publisher.Instance);
}
}
else if (inReplyTo.Handle.SubscriberId == inReplyTo.Sender)
{
Object subscriber = EllaModel.Instance.GetSubscriber(inReplyTo.Sender);
reply.Sender = EllaModel.Instance.GetPublisherId(sender);
if (inReplyTo.Handle is RemoteSubscriptionHandle)
{
_log.Debug("Delivering reply to remote receiver");
return(Networking.SendApplicationMessage(reply, inReplyTo.Handle as RemoteSubscriptionHandle,
isReply: true));
}
else
{
DeliverMessage(reply, subscriber);
}
}
else
{
return(false);
}
return(true);
}