public bool AddKey(string key, CallbackInfo updateCallback, CallbackInfo removeCallback)
{
lock (_interestedKeys)
{
if (!_interestedKeys.ContainsKey(key))
{
_interestedKeys.Add(key, new NotificationEntry(updateCallback, removeCallback)
{
RegistrationTime = HPTime.Now
});
return(true);
}
else
{
NotificationEntry entry = _interestedKeys[key];
entry.SetNotifications(updateCallback, removeCallback);
_interestedKeys[key] = entry;
}
}
return(false);
}
public PollingResult GetChangedKeys(ILogger logger)
{
PollingResult result = new PollingResult();
HPTime newPollTime = HPTime.Now;
lock (_interestedKeys)
{
IDictionaryEnumerator enumerator = _interestedKeys.GetEnumerator();
while (enumerator.MoveNext())
{
string key = enumerator.Key as string;
// add to result if clearkey exists in interest
if (key.Equals(_clearKey))
{
result.UpdatedKeys.Add(_clearKey);
DecrementOrRemove(ref _updatedKeys, _clearKey);
}
NotificationEntry enntry = (NotificationEntry)enumerator.Value;
if (enntry.NotifyOnUpdate)
{
if (_updatedKeys.ContainsKey(key))
{
//change must be detected if a client had registered prior to change occured
if (_updatedKeys[key].UpdatedTime.CompareTo(enntry.RegistrationTime) > 0 &&
_updatedKeys[key].UpdatedTime.CompareTo(_lastPollTime) >= 0)
{
if (_updatedKeys[key].UpdatedBy != null && string.Compare(_updatedKeys[key].UpdatedBy, _clientId, true) != 0)
{
result.UpdatedKeys.Add(key);
}
else if (_updatedKeys[key].UpdatedBy == null)
{
result.UpdatedKeys.Add(key);
}
DecrementOrRemove(ref _updatedKeys, key);
}
}
}
if (enntry.NotifyOnRemove)
{
if (_removedKeys.ContainsKey(key))
{
//change must be detected if a client had registered prior to change occured
if (_removedKeys[key].UpdatedTime.CompareTo(enntry.RegistrationTime) > 0 &&
_removedKeys[key].UpdatedTime.CompareTo(_lastPollTime) >= 0)
{
if (_removedKeys[key].UpdatedBy != null && string.Compare(_removedKeys[key].UpdatedBy, _clientId, true) != 0)
{
result.RemovedKeys.Add(key);
}
else if (_removedKeys[key].UpdatedBy == null)
{
result.RemovedKeys.Add(key);
}
DecrementOrRemove(ref _removedKeys, key);
}
}
}
}
_lastPollTime = newPollTime;
//Remove keys that are deleted from interestedKeys here
foreach (string key in result.RemovedKeys)
{
_interestedKeys.Remove(key);
}
if (_interestedKeys.ContainsKey(_clearKey))
{
_interestedKeys.Remove(_clearKey);
}
}
return(result);
}
