internal void OnSelectiveEventsMessageRecieved(MessageEventItem eventMessage)
{
string key = eventMessage.Key;
CallbackInfo cbInfo = new CallbackInfo(null, eventMessage.Callback, eventMessage.DataFilter);
EventHandle handle = null;
if (cbInfo != null)
{
short handler = (short)cbInfo.Callback;
handle = new EventHandle(handler);
}
switch (eventMessage.EventType)
{
case Alachisoft.NCache.Persistence.EventType.ITEM_UPDATED_CALLBACK:
RaiseSelectiveCacheNotification(key, EventType.ItemUpdated, eventMessage.Item, eventMessage.OldItem, CacheItemRemovedReason.Underused, false, handle, cbInfo.DataFilter);
break;
case Alachisoft.NCache.Persistence.EventType.ITEM_REMOVED_CALLBACK:
RaiseSelectiveCacheNotification(key, EventType.ItemRemoved, eventMessage.Item, null, eventMessage.Reason, false, handle, cbInfo.DataFilter);
break;
}
}
private bool RegisterGeneralDiscriptor(CacheEventDescriptor discriptor, EventTypeInternal eventType)
{
if (discriptor == null)
{
return(false); //FAIL CONDITION
}
EventHandle handle = null;
foreach (EventTypeInternal type in Enum.GetValues(typeof(EventTypeInternal)))
{
ResourcePool pool = null;
bool registrationUpdated = false;
#region Pool selection
if ((type & eventType) != 0)
{
pool = GetEventPool(type);
}
if (pool == null)
{
continue;
}
#endregion
short registrationSequenceId = -1;
lock (SyncLockGeneral)
{
pool.AddResource(discriptor, 1); // Everytime a new Discriptor is forcefully created
//Keeps a sequence number
switch (type)
{
case EventTypeInternal.ItemAdded:
if (discriptor.DataFilter > _generalAddDataFilter || _addEventRegistrationSequence == REFSTART)
{
registrationUpdated = true;
registrationSequenceId = ++_addEventRegistrationSequence;
_generalAddDataFilter = discriptor.DataFilter;
}
else
{
registrationSequenceId = _addEventRegistrationSequence;
}
break;
case EventTypeInternal.ItemRemoved:
if (discriptor.DataFilter > _generalRemoveDataFilter || _removeEventRegistrationSequenceId == REFSTART)
{
registrationUpdated = true;
registrationSequenceId = ++_removeEventRegistrationSequenceId;
_generalRemoveDataFilter = discriptor.DataFilter;
}
else
{
registrationSequenceId = _removeEventRegistrationSequenceId;
}
break;
case EventTypeInternal.ItemUpdated:
if (discriptor.DataFilter > _generalUpdateDataFilter || _updateEventRegisrationSequenceId == REFSTART)
{
registrationUpdated = true;
registrationSequenceId = ++_updateEventRegisrationSequenceId;
_generalUpdateDataFilter = discriptor.DataFilter;
}
else
{
registrationSequenceId = _updateEventRegisrationSequenceId;
}
break;
}
//Although the handle doesnt matter in general events
if (handle == null)
{
handle = new EventHandle(registrationSequenceId);
}
}
if (_cache != null && registrationSequenceId != -1)
{
_cache.RegisterCacheNotificationDataFilter(type, discriptor.DataFilter, registrationSequenceId);
}
}
discriptor.IsRegistered = true;
discriptor.Handle = handle;
return(true);
}
/// <summary>
/// TheadSafe and no locks internally
/// </summary>
/// <param name="key"></param>
/// <param name="eventType">Should contain one type i.e. should not be used as a flag.
/// Every EventType should be executed from another thread</param>
/// <param name="item"></param>
/// <param name="oldItem"></param>
/// <param name="reason"></param>
/// <param name="_notifyAsync"></param>
/// <param name="eventhandle"></param>
internal void RaiseSelectiveCacheNotification(string key, EventType eventType, EventCacheItem item, EventCacheItem oldItem, CacheItemRemovedReason reason, bool _notifyAsync, EventHandle eventhandle, EventDataFilter dataFilter)
{
try
{
ResourcePool poolID = null;
CacheEventArg arg = null;
var bitSet = new BitSet();
if (_cache.SerializationFormat == Common.Enum.SerializationFormat.Json)
{
bitSet.SetBit(BitSetConstants.JsonData);
}
if (item != null)
{
item.SetValue(_cache.SafeDeserialize <object>(item.GetValue <object>(), _cache.SerializationContext, bitSet, UserObjectType.CacheItem));
}
if (oldItem != null)
{
oldItem.SetValue(_cache.SafeDeserialize <object>(oldItem.GetValue <object>(), _cache.SerializationContext, bitSet, UserObjectType.CacheItem));
}
if ((eventType & EventType.ItemUpdated) != 0)
{
poolID = _selectiveUpdateEventIDPool;
}
else if ((eventType & EventType.ItemRemoved) != 0)
{
poolID = _selectiveRemoveEventIDPool;
}
arg = CreateCacheEventArgument(dataFilter, key, _cacheName, eventType, item, oldItem, reason);
if (poolID == null)
{
return;
}
CacheDataNotificationCallback callback = poolID.GetResource((short)eventhandle.Handle) as CacheDataNotificationCallback;
if (callback == null) //Can occur if Unregistered concurrently
{
return;
}
if (_notifyAsync)
{
System.Threading.ThreadPool.QueueUserWorkItem(waitC, new object[] { callback, key, arg }); //Faster and better
}
else
{
callback.Invoke(key, arg);
}
}
catch (Exception ex)
{
if (_logger != null && _logger.IsErrorEnabled)
{
_logger.CriticalInfo(ex.ToString());
}
}
}
