public MessageSubscribtionInfo(DataContractKey contractKey, ICallHandler handler, XmlObjectSerializer serializer, bool receiveSelfPublish, IEnumerable<BusHeader> filterHeaders)
{
_handler = handler;
_serializer = serializer;
_filterInfo = new MessageFilterInfo(contractKey, receiveSelfPublish, filterHeaders);
}
public bool Register(Type type, MessageFilterInfo filterInfo, ICallHandler handler)
{
return _subscriptions.TryAdd(type, new SubscriptionInfo
{
FilterInfo = filterInfo,
Handler = handler
});
}
private bool IsMessageSurvivesFilter(MessageFilterInfo filterInfo, RawBusMessage busMessage)
{
// TODO: Add header filtering
if (filterInfo.ReceiveSelfPublish) return true;
bool selfPublished = Equals(busMessage.BusId, _busId);
return !selfPublished;
}
public static void QueueBind(this IModel model, string queue, string exchange, string routingKey, MessageFilterInfo filterInfo)
{
IDictionary<string, object> arguments = new Dictionary<string, object>();
arguments.Add(MessagingConstants.HeaderNames.Name, filterInfo.ContractKey.Name);
arguments.Add(MessagingConstants.HeaderNames.NameSpace, filterInfo.ContractKey.Ns);
foreach (BusHeader header in filterInfo.FilterHeaders)
{
arguments.Add(header.Name, header.Value);
}
model.QueueBind(queue, exchange, routingKey, arguments);
}
public bool Subscribe(Type dataType, ICallHandler handler, IEnumerable<BusHeader> filter)
{
DataContractKey key = dataType.GetDataContractKey();
MessageFilterInfo filterInfo = new MessageFilterInfo(key, filter ?? Enumerable.Empty<BusHeader>());
return _registrationAction(dataType, filterInfo, handler);
}