public IDisposable Subscribe(IEventSink eventSink, object filterInstance, EndpointReference subscriptionManagerReference, IIncomingHeaders headers)
{
var selectorSetHeader = headers.GetHeader <SelectorSetHeader>();
var target = selectorSetHeader.Selectors.ExtractObjectName();
var listenerId = GenerateNextListenerId();
subscriptionManagerReference.AddProperty(new NotificationListenerListHeader(listenerId.ToString()), false);
var subscriptionInfo = new SubscriptionInfo(eventSink, listenerId);
lock (_subscriptions)
{
_subscriptions.Add(subscriptionInfo);
}
_server.AddNotificationListener(target, subscriptionInfo.OnNotification, subscriptionInfo.FilterNotification, listenerId);
return(new SubscriptionRemover(
() =>
{
lock (_subscriptions)
{
var toRemove = _subscriptions.Single(x => x.EventSink == eventSink);
_server.RemoveNotificationListener(target, toRemove.OnNotification, toRemove.FilterNotification, toRemove.ListenerId);
_subscriptions.Remove(toRemove);
}
}));
}
private static IEnumerable <Selector> GetSelectors(IIncomingHeaders incomingHeaders)
{
var selectorSetHeader = incomingHeaders.GetHeader <SelectorSetHeader>();
if (selectorSetHeader != null)
{
Log.Info("Requesting selectors " + string.Join(", ", selectorSetHeader.Selectors.Select(x => x.ToString())));
return(selectorSetHeader.Selectors);
}
return(Enumerable.Empty <Selector>());
}
private static string GetFragmentExpression(IIncomingHeaders incomingHeaders, IOutgoingHeaders outgoingHeaders)
{
var fragmentTransferHeader = incomingHeaders.GetHeader<FragmentTransferHeader>();
string fragmentExpression = null;
if (fragmentTransferHeader != null)
{
Log.InfoFormat("Requesting fragment '{0}'", fragmentTransferHeader.Expression);
outgoingHeaders.AddHeader(fragmentTransferHeader, true);
fragmentExpression = fragmentTransferHeader.Expression;
}
else
{
Log.Debug("Not a fragment request.");
}
return fragmentExpression;
}
private static string GetFragmentExpression(IIncomingHeaders incomingHeaders, IOutgoingHeaders outgoingHeaders)
{
var fragmentTransferHeader = incomingHeaders.GetHeader <FragmentTransferHeader>();
string fragmentExpression = null;
if (fragmentTransferHeader != null)
{
Log.InfoFormat("Requesting fragment '{0}'", fragmentTransferHeader.Expression);
outgoingHeaders.AddHeader(fragmentTransferHeader, true);
fragmentExpression = fragmentTransferHeader.Expression;
}
else
{
Log.Debug("Not a fragment request.");
}
return(fragmentExpression);
}
private IManagementRequestHandler GetHandler(IIncomingHeaders incomingHeaders)
{
var resourceUriHeader = incomingHeaders.GetHeader<ResourceUriHeader>();
if (resourceUriHeader == null)
{
Log.ErrorFormat("Required ResourceURI header not found.");
throw new DestinationUnreachableFaultException();
}
var resourceUri = resourceUriHeader.ResourceUri;
IManagementRequestHandler handler;
if (_handlers.TryGetValue(resourceUri, out handler))
{
Log.InfoFormat("Using {0} to handle resource '{1}'", handler, resourceUri);
return handler;
}
Log.ErrorFormat("Handler for resource '{0}' not found.", resourceUri);
throw new DestinationUnreachableFaultException();
}
private IManagementRequestHandler GetHandler(IIncomingHeaders incomingHeaders)
{
var resourceUriHeader = incomingHeaders.GetHeader <ResourceUriHeader>();
if (resourceUriHeader == null)
{
Log.ErrorFormat("Required ResourceURI header not found.");
throw new DestinationUnreachableFaultException();
}
var resourceUri = resourceUriHeader.ResourceUri;
IManagementRequestHandler handler;
if (_handlers.TryGetValue(resourceUri, out handler))
{
Log.InfoFormat("Using {0} to handle resource '{1}'", handler, resourceUri);
return(handler);
}
Log.ErrorFormat("Handler for resource '{0}' not found.", resourceUri);
throw new DestinationUnreachableFaultException();
}
private static IEnumerable<Selector> GetSelectors(IIncomingHeaders incomingHeaders)
{
var selectorSetHeader = incomingHeaders.GetHeader<SelectorSetHeader>();
if (selectorSetHeader != null)
{
Log.Info("Requesting selectors "+string.Join(", ", selectorSetHeader.Selectors.Select(x => x.ToString())));
return selectorSetHeader.Selectors;
}
return Enumerable.Empty<Selector>();
}
