/// <summary>
/// Called when a message is published. Determines if there is a registration associated with
/// the message being published. If there is a registration for an associated Queue or Topic,
/// the message will be delivered.
/// </summary>
/// <param name="message">The message being dispatched.</param>
/// <param name="cancellationToken">Cancellation token.</param>
/// <returns></returns>
public override async Task PublishMessageAsync(IMessage message, CancellationToken cancellationToken)
{
Type messageType = message.GetType();
if (!_publisherModule.HasHostItem(messageType))
{
return;
}
// Get information associated with the message being published:
IHostItem hostItem = _publisherModule.GetHostItem(messageType);
ISenderHostItem senderItem = (ISenderHostItem)hostItem;
Session session = await _connectionModule.CreateSenderSession(hostItem.HostName);
SenderLink senderLink = null;
try
{
// Create the sender link used to send messages:
senderLink = new SenderLink(session, Guid.NewGuid().ToString(), senderItem.Name);
// Serialize the message based on its associated content-type and delegate to the corresponding
// host sender item to create the AMQP message with the message properties correctly set.
object body = SerializeMessage(hostItem, message);
Message amqpMessage = senderItem.CreateMessage(message, body);
// Send message to the defined host item (i.e. Queue/Topic).
await senderLink.SendAsync(amqpMessage);
}
finally
{
await session.CloseAsync();
if (senderLink != null)
{
await senderLink.CloseAsync();
}
}
}
public object SerializeMessage(IHostItem hostItem, IMessage message)
{
return(_serialization.Serialize(message, hostItem.ContentType, hostItem.ContentEncoding));
}
