public void AddObserver(Request request, LocalResource resource)
{
request.IsObserving = true;
Observationship shipToAdd = new Observationship(request);
lock (_sync)
{
// get clients map for the given resource path
IDictionary <String, Observationship> resourceObservers = SafeGet(_observersByResource, resource.Path);
// get resource map for given client address
IDictionary <String, Observationship> clientObservers = SafeGet(_observersByClient, request.PeerAddress.ToString());
// save relationship for notifications triggered by resource
resourceObservers[request.PeerAddress.ToString()] = shipToAdd;
// save relationship for actions triggered by client
clientObservers[resource.Path] = shipToAdd;
}
if (log.IsInfoEnabled)
{
log.Info(String.Format("Established observing relationship: {0} @ {1}",
request.PeerAddress, resource.Path));
}
// update response
PrepareResponse(request);
}
public void RemoveObserver(String clientID, Int32 messageId)
{
Observationship shipToRemove = null;
IDictionary <String, Observationship> clientObservers = null;
if (_observersByClient.ContainsKey(clientID))
{
clientObservers = _observersByClient[clientID];
foreach (Observationship ship in clientObservers.Values)
{
if (messageId == ship.lastMessageID && clientID.Equals(ship.clientID))
{
shipToRemove = ship;
break;
}
}
}
if (shipToRemove == null)
{
if (log.IsWarnEnabled)
{
log.Warn(String.Format("Cannot find observing relationship: {0}|{1}", clientID, messageId));
}
}
else
{
IDictionary <String, Observationship> resourceObservers = _observersByResource[shipToRemove.resourcePath];
// FIXME Inconsistent state check
if (resourceObservers == null)
{
if (log.IsErrorEnabled)
{
log.Error(String.Format("FIXME: ObservingManager has clientObservee, but no resourceObservers ({0} @ {1})", clientID, shipToRemove.resourcePath));
}
}
else if (resourceObservers.Remove(clientID) && clientObservers.Remove(shipToRemove.resourcePath))
{
if (log.IsInfoEnabled)
{
log.Info(String.Format("Terminated observing relationship by RST: {0} @ {1}", clientID, shipToRemove.resourcePath));
}
return;
}
}
if (log.IsWarnEnabled)
{
log.Warn(String.Format("Cannot find observing relationship by MID: {0}|{1}", clientID, messageId));
}
}
private void UpdateLastMessageID(String clientID, String path, Int32 id)
{
if (_observersByClient.ContainsKey(clientID))
{
IDictionary <String, Observationship> clientObservers = _observersByClient[clientID];
if (clientObservers.ContainsKey(path))
{
Observationship shipToUpdate = clientObservers[path];
shipToUpdate.lastMessageID = id;
if (log.IsDebugEnabled)
{
log.Debug(String.Format("Updated last message ID for observing relationship: {0} @ {1}",
clientID, shipToUpdate.resourcePath));
}
return;
}
}
if (log.IsWarnEnabled)
{
log.Warn(String.Format("Cannot find observing relationship to update message ID: {0} @ {1}",
clientID, path));
}
}
