/// <summary>
/// Constructs an instance of the LocalPerformer class.
/// </summary>
/// <param name="msg">The invocation to be executed.</param>
/// <param name="resultCollector">The Result Collector.</param>
/// <param name="mbr">The target.</param>
public LocalPerformer(IMessage msg, ResultCollector resultCollector, MarshalByRefObject mbr)
{
this._msg = msg;
this._resultCollector = resultCollector;
this._mbr = mbr;
this._mbrUri = RemotingServices.GetObjectUri(mbr);
}
/// <summary>
/// Broadcasts message to all registered receivers.
/// </summary>
/// <param name="msg">The message to be broadcasted.</param>
/// <returns></returns>
public override IMessage Invoke(IMessage msg)
{
ResultCollector resultCollector = null;
// broadcasting
using (ReaderAutoLocker reader = new ReaderAutoLocker(this._dispatcher._readerWriterLock))
{
resultCollector = new ResultCollector(this._dispatcher, this._dispatcher._receivers.Count + 3, msg);
}
resultCollector.PerformBroadcasting(msg);
return(new ReturnMessage(resultCollector, null, 0, (LogicalCallContext)msg.Properties["__CallContext"], (IMethodCallMessage)msg));
}
/// <summary>
/// Returns the filtered array of the ReceiverInfo instances.
/// </summary>
/// <param name="arrayOfReceiverInfo">The list of receivers being filtered out.</param>
/// <param name="iMessage">The invocation.</param>
/// <param name="resultCollector">The Result Collector obtaining the list of receivers. Is used for debugging purposes only.</param>
public void GetListOfReceivers(out object[] arrayOfReceiverInfo, IMessage iMessage, ResultCollector resultCollector)
{
arrayOfReceiverInfo = null;
try
{
using (ReaderAutoLocker reader = new ReaderAutoLocker(this._readerWriterLock))
{
// check whether they were cached
if (this._cachedReceiversInfoArray == null)
{
this._cachedReceiversInfoArray = new object[this._receivers.Values.Count];
this._receivers.Values.CopyTo(this._cachedReceiversInfoArray, 0);
}
// get the cached array
arrayOfReceiverInfo = this._cachedReceiversInfoArray;
// and drive it thru the filter
IMulticastFilter iMulticastFilter = Dispatcher.GetCurrentFilter();
if (iMulticastFilter == null)
{
iMulticastFilter = this.IMulticastFilter;
}
if (iMulticastFilter != null)
{
// LOG:
BinaryLogWriter binaryLogWriter = GenuineLoggingServices.BinaryLogWriter;
if (binaryLogWriter != null && binaryLogWriter[LogCategory.BroadcastEngine] > 0)
{
binaryLogWriter.WriteBroadcastEngineEvent(LogCategory.BroadcastEngine, "Dispatcher.GetListOfReceivers",
LogMessageType.BroadcastFilterCalled, null, null, null, null,
GenuineUtility.CurrentThreadId, Thread.CurrentThread.Name,
null, null, false, this, resultCollector, false, null,
iMulticastFilter.GetType().ToString(), null,
"The broadcast filter is called. The type of the filter: {0}.", iMulticastFilter.GetType().ToString());
}
arrayOfReceiverInfo = iMulticastFilter.GetReceivers(arrayOfReceiverInfo, iMessage);
}
}
}
catch (Exception ex)
{
// LOG:
BinaryLogWriter binaryLogWriter = GenuineLoggingServices.BinaryLogWriter;
if (binaryLogWriter != null && binaryLogWriter[LogCategory.BroadcastEngine] > 0)
{
binaryLogWriter.WriteBroadcastEngineEvent(LogCategory.BroadcastEngine, "Dispatcher.GetListOfReceivers",
LogMessageType.BroadcastFilterCalled, ex, null, null, null,
GenuineUtility.CurrentThreadId, Thread.CurrentThread.Name,
null, null, false, this, resultCollector, false, null,
null, null,
"The exception occurred while calling the broadcast filter.");
}
}
}
/// <summary>
/// Does absolutely nothing. If you want to enable async calls and do not need to process call results, use this stub as an event receiver.
/// </summary>
/// <param name="dispatcher">Ignored.</param>
/// <param name="message">Ignored.</param>
/// <param name="resultCollector">Ignored.</param>
public void AsyncEventStub(Dispatcher dispatcher, IMessage message, ResultCollector resultCollector)
{
}
/// <summary> /// Sends the message via specific broadcast transport. /// </summary> /// <param name="message">The message being sent.</param> /// <param name="resultCollector">The Result Ñollector to gather results of the invocation.</param> public abstract void SendMessage(Message message, ResultCollector resultCollector);