/// <summary>
/// Enlist item for execution.
/// </summary>
protected override void OnExecute(Envelope envelope)
{
WaitCallback waitCallback = _waitCallback;
if (waitCallback != null)
{
ThreadPool.QueueUserWorkItem(waitCallback, envelope);
}
}
protected override void OnExecute(Envelope envelope)
{
// Process the incoming request, we will simply execute in on default thread pool.
WaitCallback del = delegate(object state)
{
base.Client.PerformExecution((Envelope)envelope);
};
ThreadPool.QueueUserWorkItem(del, envelope);
}
/// <summary>
/// Enlist item for execution.
/// </summary>
public virtual void Execute(Envelope envelope)
{
ActiveClient client = _client;
if (envelope.ExecutionModel == Envelope.ExecutionModelEnum.Direct)
{
if (client != null)
{
client.PerformExecution(envelope);
}
}
else
{
OnExecute(envelope);
}
}
/// <summary>
/// Send an item to a single repicient.
/// </summary>
/// <returns></returns>
public Outcomes Send(ClientId senderId, ClientId receiverId, Envelope envelope, TimeSpan? requestConfirmTimeout, bool showErrorsDiagnostics)
{
return Send(senderId, new ClientId[] { receiverId }, envelope, requestConfirmTimeout, showErrorsDiagnostics);
}
/// <summary>
/// Actually supply the item to client.
/// </summary>
/// <param name="senderId"></param>
/// <param name="receiverId"></param>
/// <param name="envelope"></param>
/// <param name="requestConfirm">In local mode we have receival confirmation, so this value is ignored here (as result is always assured true).</param>
/// <returns></returns>
protected virtual SendToClientResultEnum DoSendToClient(ClientId senderId, ClientId receiverId,
Envelope envelope, TimeSpan? requestConfirmTimeout)
{
if (receiverId.MessageBus != this)
{
//// Maybe this is a "lost" id, try to see if it is one of ours.
//if (receiverId.MessageBus == null && _guidToIndexHotSwap.ContainsKey(receiverId.Guid))
//{// Yes!
// receiverId.MessageBus = this;
//}
return SendToClientResultEnum.ClientNotFound;
}
MessageBusClient client = GetLocalClientByIndex(receiverId.LocalMessageBusIndex);
if (client == null)
{
return SendToClientResultEnum.ClientNotFound;
}
ISerializer serializer = _serializer;
if (serializer == null)
{
return SendToClientResultEnum.Failure;
}
// Duplicate what (if anything) as according to envelope duplication model.
envelope = envelope.Duplicate(serializer);
envelope.History.PushStamp(new EnvelopeStamp(PendingStampId, receiverId, senderId));
if (client.Receive(envelope))
{
return SendToClientResultEnum.Success;
}
else
{
return SendToClientResultEnum.Failure;
}
}
/// <summary> /// Implementations handle this to do the actual execution. /// </summary> protected abstract void OnExecute(Envelope envelope);
protected void RaiseEnvelopeReceivedEvent(Envelope envelope)
{
EnvelopeUpdateDelegate envelopeReceivedDelegate = EnvelopeReceivedEvent;
if (envelopeReceivedDelegate != null)
{
envelopeReceivedDelegate(this, envelope);
}
}
/// <summary>
/// Send an item to multiple recipients.
/// </summary>
protected override Outcomes DoSend(ClientId senderId, IEnumerable<ClientId> receiversIds,
Envelope envelope, TimeSpan? requestConfirmTimeout, bool showErrorsDiagnostics)
{
if (IsDisposed)
{// Possible to get disposed while operating here.
return Outcomes.SystemFailture;
}
//if (envelope.Address != null)
//{
// SystemMonitor.OperationError("Envelope transport direction not clear.");
// return false;
//}
bool result = true;
foreach (ClientId receiverId in receiversIds)
{
if (DoSendToClient(senderId, receiverId, envelope, requestConfirmTimeout) != SendToClientResultEnum.Success)
{
result = false;
}
}
return result ? Outcomes.Success : Outcomes.Failure;
}
/// <summary>
/// Addressed envelope.
/// </summary>
protected Outcomes Send(Envelope envelope)
{
if (envelope.Address != null)
{
EnvelopeStamp stamp = envelope.Address.PopStamp();
if (stamp != null)
{
return Send(stamp.SenderIndex, stamp.ReceiverIndex, envelope, null, false);
}
}
return Outcomes.Failure;
}
internal abstract bool Receive(Envelope envelope);
/// <summary>
///
/// </summary>
protected virtual void OnPerformExecution(Envelope envelope)
{
}
/// <summary>
/// This will transport the envelope to the server, if it can.
/// </summary>
protected override Outcomes DoSend(ClientId senderId, IEnumerable<ClientId> receiversIds,
Envelope envelope, TimeSpan? requestConfirmTimeout, bool showErrorsDiagnostics)
{
bool result = true;
foreach (ClientId id in receiversIds)
{
result = result && DoSendToClient(senderId, id, envelope, requestConfirmTimeout) == SendToClientResultEnum.Success;
}
return result ? Outcomes.Success : Outcomes.Failure;
}
/// <summary>
/// Send a responce to an envelope received.
/// </summary>
/// <param name="receivedEnvelope">The enveloped received, we shall respond to it.</param>
/// <param name="envelope">The new envelope, we are sending as responce.</param>
/// <returns></returns>
public Outcomes Respond(Envelope receivedEnvelope, Envelope envelope)
{
envelope.Address = EnvelopeTransportation.CreateResponseTransport(receivedEnvelope.History);
return Send(envelope);
}
/// <summary>
///
/// </summary>
public virtual void PerformExecution(Envelope envelope)
{
RaiseEnvelopeExecutingEvent(envelope);
OnPerformExecution(envelope);
RaiseEnvelopeExecutedEvent(envelope);
}
/// <summary>
///
/// </summary>
/// <param name="senderId"></param>
/// <param name="receiverId"></param>
/// <param name="envelope"></param>
/// <param name="requestConfirm">Only valid for remote clients, since all local calls are confirmed or denied by default.</param>
/// <returns></returns>
protected override SendToClientResultEnum DoSendToClient(ClientId senderId, ClientId receiverId,
Envelope envelope, TimeSpan? requestConfirmTimeout)
{
if (receiverId.IsMessageBusIndexValid && (receiverId.MessageBus == this))
//|| receiverId.MessageBus == null)) // This allows for "lost" ids.
{// Receiver seems to be a local item.
SendToClientResultEnum result = base.DoSendToClient(senderId, receiverId, envelope, requestConfirmTimeout);
if (result != SendToClientResultEnum.ClientNotFound)
{
return result;
}
}
int clientSocketId = 0;
lock (_syncRoot)
{
if (_remoteClientNetId.TryGetValue(receiverId, out clientSocketId) == false)
{
return SendToClientResultEnum.ClientNotFound;
}
}
// Send message.
EnvelopeMessage message = new EnvelopeMessage() { Envelope = envelope,
Receivers = new ClientId[] { receiverId },
Sender = senderId,
RequestResponse = false
};
if (ToClient(clientSocketId, message, requestConfirmTimeout) == false)
{
return SendToClientResultEnum.Failure;
}
else
{
return SendToClientResultEnum.Success;
}
}
protected override void OnExecute(Envelope envelope)
{
ThreadPoolFast pool = ThreadPool;
if (pool != null)
{
pool.QueueFastDelegate(this, _performExecutionDelegate, envelope);
// Other invocation options.
//ThreadPoolFastEx.TargetInfo targetInfo = new ThreadPoolFastEx.TargetInfo(string.Empty, this,
// _singleFastInvokeDelegate, threadPool, envelope);
//threadPool.QueueTargetInfo(targetInfo);
}
}
/// <summary>
///
/// </summary>
/// <param name="requestConfirm">Only valid for remote clients, since all local calls are confirmed or denied by default.</param>
protected override SendToClientResultEnum DoSendToClient(ClientId senderId, ClientId receiverId,
Envelope envelope, TimeSpan? requestConfirmTimeout)
{
if (receiverId.IsMessageBusIndexValid && receiverId.MessageBus == this)
{// Seems to be a local client Id.
SendToClientResultEnum result = base.DoSendToClient(senderId, receiverId, envelope, requestConfirmTimeout);
if (result != SendToClientResultEnum.ClientNotFound)
{
return result;
}
}
// Receiver was not local in parrent, try remote.
if (IsConnected == false)
{
return SendToClientResultEnum.Failure;
}
EnvelopeMessage message = new EnvelopeMessage()
{
Envelope = envelope,
Receivers = new ClientId[] { receiverId },
Sender = senderId
};
return ToServer(message, requestConfirmTimeout) ? SendToClientResultEnum.Success : SendToClientResultEnum.Failure;
}
internal object Invoke(object target, Envelope envelope)
{
object[] parameters = null;
if (ClientInstance != null && EnvelopeRequired)
{
parameters = new object[] { ClientInstance, envelope, envelope.Message};
}
else if (ClientInstance != null && EnvelopeRequired == false)
{
parameters = new object[] { ClientInstance, envelope.Message};
}
else if (ClientInstance == null && EnvelopeRequired)
{
parameters = new object[] { envelope, envelope.Message};
}
else if (ClientInstance == null && EnvelopeRequired == false)
{
parameters = new object[] { envelope.Message};
}
return DelegateInstance(target, parameters);
}
protected override void OnPerformExecution(Envelope envelope)
{
Dictionary<Type, TypeHandler> typeHandlersHotSwap = _typeHandlersHotSwap;
Type messageType = envelope.Message.GetType();
object target = _source;
if (target != null && envelope.Message != null && typeHandlersHotSwap != null)
{
TypeHandler handler;
if (typeHandlersHotSwap.TryGetValue(messageType, out handler))
{
handler.Invoke(target, envelope);
}
}
}
/// <summary>
/// Receive an envelope for executing.
/// </summary>
internal override bool Receive(Envelope envelope)
{
ExecutionStrategy executionStrategy = _executionStrategy;
if (executionStrategy != null)
{
executionStrategy.Execute(envelope);
}
RaiseEnvelopeReceivedEvent(envelope);
return true;
}
/// <summary>
/// Send an item to multiple recipients.
/// </summary>
public Outcomes Send(ClientId senderId, IEnumerable<ClientId> receiversIds, Envelope envelope, TimeSpan? requestConfirmTimeout, bool showErrorsDiagnostics)
{
return DoSend(senderId, receiversIds, envelope, requestConfirmTimeout, showErrorsDiagnostics);
}
protected abstract Outcomes DoSend(ClientId senderIndex, IEnumerable<ClientId> receiversIndeces, Envelope envelope, TimeSpan? requestConfirmTimeout, bool showErrorsDiagnostics);
/// <summary>
/// This may actually *not* duplicate the object, since it follows the DuplicationMode.
/// </summary>
/// <returns></returns>
public virtual Envelope Duplicate(ISerializer serializer)
{
Envelope newEnvelope = this;
if (_duplicationMode == DuplicationModeEnum.DuplicateEnvelope
|| _duplicationMode == DuplicationModeEnum.DuplicateBoth)
{
//newObject = (Envelope)this.MemberwiseClone();
//newObject = (Envelope)serializer.Duplicate(this);
newEnvelope = new Envelope() { _duplicationMode = this._duplicationMode };
EnvelopeTransportation transportHistory = _transportHistory;
EnvelopeTransportation transportTargetAddress = _transportTargetAddress;
if (transportHistory != null)
{
newEnvelope._transportHistory = transportHistory.Duplicate();
}
if (transportTargetAddress != null)
{
newEnvelope._transportTargetAddress = transportTargetAddress.Duplicate();
}
}
if (_message != null &&
(_duplicationMode == DuplicationModeEnum.DuplicateMessage
|| _duplicationMode == DuplicationModeEnum.DuplicateBoth))
{
if (_message is ICloneable)
{
newEnvelope._message = ((ICloneable)_message).Clone();
}
else if (_message.GetType().IsClass)
{// We need to use the slow cloning mechanism.
newEnvelope._message = serializer.Duplicate(_message);
#if Matrix_Diagnostics
SystemMonitor.OperationErrorIf(newEnvelope._message == null, "Failed to serialize message [" + _message.GetType().Name + "].");
#endif
}
// Value type items are supposed to be copied by referencing.
}
return newEnvelope;
}
