/// <summary>
/// Allows to send a message to receiver, by "hiding" the current node, this way all responce messages
/// are targeted to the original sender (incl. responce of this message if it is request).
/// This allows to implement a message proxy.
/// </summary>
/// <param name="receiverId"></param>
/// <param name="message"></param>
protected void ProxySend(ArbiterClientId receiverId, TransportMessage message)
{
TransportInfoUnit?info = message.TransportInfo.PopTransportInfo();
if (info == null)
{
SystemMonitor.Error("Failed to establish message pending transport info.");
return;
}
DoSendCustom(message.IsRequest, info.Value.Id, null, 0, receiverId, info.Value.SenderID, message, DefaultTimeOut);
}
/// <summary>
/// The direct call allows to circumvent the many steps (incl serialization) of typical message sending
/// and make a direct call to another Arbiter member; thus making a much faster delivery. This path
/// has a maximum optimization for speed, so tracing etc. are disabled.
///
/// Also this mechanism only works for TransportClients currently.
///
/// The mechanism does not utilize any new threads, and the execution is performed on the calling thread.
///
/// Direct calls can only be made to participants on the same arbiter, and no addressing is applied
/// for the messages.
/// </summary>
public Message DirectCall(ArbiterClientId senderID, ArbiterClientId receiverID, Message message)
{
IArbiterClient receiver = GetClientByID(receiverID, true);
if (receiver == null || receiver is TransportClient == false)
{
SystemMonitor.OperationWarning("Sender [" + senderID.Id.Print() + "] creating conversation message [" + message.GetType().Name + " ] by not present receiver [" + receiverID.Id.Print() + "] or receiver not a TransportClient");
return(null);
}
Message response = receiver.ReceiveDirectCall(message);
return(response);
}
/// <summary>
/// Do not use this in normal circumstances, this is automatically assigned.
/// Allows to assign element with an existing ID, in order to be recognized in existing paths after de-persistence.
/// </summary>
/// <param name="id"></param>
public bool SetArbiterSubscriptionClientId(ArbiterClientId id)
{
if (_arbiter != null)
{
SystemMonitor.Error("CAn not assign arbiter subscription id, after item already added to arbiter.");
return(false);
}
lock (this)
{
_subscriptionClientId = id;
}
return(true);
}
/// <summary>
/// Message received from the "Pipe".
/// </summary>
void _transport_MessageReceivedEvent(string operationContextSessionID, MessageContainer messageContainer)
{
TransportMessage message = (TransportMessage)messageContainer.CreateMessageInstance();
TracerHelper.Trace("[" + message.GetType().Name + "], length [" + messageContainer.MessageStreamLength + "]");
if (message.IsRequest)
{ // Request requestMessage.
{ // Mark the request requestMessage with additional fragment in the transportation stack.
ArbiterClientId senderID = new ArbiterClientId("PipeChannelID", null, null);
senderID.SessionTag = operationContextSessionID;
message.TransportInfo.AddTransportInfoUnit(new TransportInfoUnit(Guid.NewGuid(), senderID, this.SubscriptionClientID));
}
if (MandatoryRequestMessageReceiverID.HasValue)
{// There is a default receiver assigned for all messages from this integrator.
DoSendCustom(true, Guid.NewGuid(), null, 0, MandatoryRequestMessageReceiverID.Value, this.SubscriptionClientID, message, TimeSpan.Zero);
}
else
{// No explicit mandatory receiver.
if (message.TransportInfo.ForwardTransportInfoCount > 0)
{
// First pop the Session stack, than send the cleared requestMessage.
ArbiterClientId?receiverID = message.TransportInfo.PopForwardTransportInfo();
DoSendCustom(true, Guid.NewGuid(), null, 0, receiverID, this.SubscriptionClientID, message, TimeSpan.Zero);
}
else
{
DoSendCustom(true, Guid.NewGuid(), null, 0, null, this.SubscriptionClientID, message, TimeSpan.Zero);
}
}
}
else
{// Responce requestMessage - send back to whoever sent it to us before.
// And clear off the initial request information, we are responding now to.
Guid sessionID = message.TransportInfo.CurrentTransportInfo.Value.Id;
ArbiterClientId?receiverID = message.TransportInfo.CurrentTransportInfo.Value.SenderID;
message.TransportInfo.PopTransportInfo();
this.DoSendCustom(false, sessionID, null, 0,
receiverID, this.SubscriptionClientID, message, TimeSpan.Zero);
}
}
/// <summary>
/// Find out what clients need to receive this requestMessage.
/// </summary>
/// <param name="requestMessage"></param>
/// <returns></returns>
public IEnumerable <ArbiterClientId> GatherMessageClients(Message message, ArbiterClientId senderID)
{
List <ArbiterClientId> clients = new List <ArbiterClientId>();
if (_isDisposed)
{// Possible to get disposed while operating here.
return(null);
}
lock (_clientsAndFilters)
{
foreach (IArbiterClient client in _clientsAndFilters.Keys)
{
if (_clientsAndFilters[client].MessageAllowed(message))
{
clients.Add(client.SubscriptionClientID);
}
}
}
return(clients);
}
///// <summary>
///// The direct call allows to circumvent the many steps (incl serialization) of typical message sending
///// and make a direct call to another Arbiter member; thus making a much faster delivery. This path
///// has a maximum optimization for speed, so tracing etc. are disabled.
/////
///// Also this mechanism only works for TransportClients currently.
/////
///// The mechanism does not utilize any new threads, and the execution is performed on the calling thread.
/////
///// Direct calls can only be made to participants on the same arbiter, and no addressing is applied
///// for the messages.
///// </summary>
//public Message DirectCall(ArbiterClientId senderID, ArbiterClientId receiverID, Message message)
//{
// IArbiterClient receiver = GetClientByID(receiverID, true);
// if (receiver == null || receiver is TransportClient == false)
// {
// SystemMonitor.OperationWarning("Sender [" + senderID.Id.Print() + "] creating conversation message [" + message.GetType().Name + " ] by not present receiver [" + receiverID.Id.Print() + "] or receiver not a TransportClient");
// return null;
// }
// Message response = receiver.ReceiveDirectCall(message);
// return response;
//}
/// <summary>
/// Will send a point to point requestMessage and start a conversation that can have many replies.
/// </summary>
public ConversationPointToPoint CreateConversation(ArbiterClientId senderID, ArbiterClientId receiverID, Message message, TimeSpan timeout)
{
SystemMonitor.CheckError(((TransportMessage)message).TransportInfo.CurrentTransportInfo != null);
if (message is TransportMessage)
{
SystemMonitor.CheckError(((TransportMessage)message).TransportInfo.CurrentTransportInfo != null);
TracerHelper.Trace("sender[" + senderID.Id.Name + "], receiver [" + receiverID.Id.Name + "], message [" + message.GetType().Name + "] [" + ((TransportMessage)message).TransportInfo.TransportInfoCount + "]");
}
else
{
TracerHelper.Trace("sender[" + senderID.Id.Name + "], message [" + message.GetType().Name + "]");
}
if (GetClientByID(senderID, false) == null)
{
SystemMonitor.Error("Creating conversation from a not present sender [" + message.GetType().Name + ", " + senderID.Id.Print() + "].");
return(null);
}
if (GetClientByID(receiverID, false) == null)
{
SystemMonitor.OperationWarning("Sender [" + senderID.Id.Print() + "] creating conversation message [" + message.GetType().Name + " ] by not present receiver [" + receiverID.Id.Print() + "]");
return(null);
}
ConversationPointToPoint conversation = new ConversationPointToPoint(_executionManager, message, senderID, receiverID, timeout);
if (_isDisposed)
{// Possible to get disposed while operating here.
return(null);
}
lock (_timeOutMonitor)
{
_timeOutMonitor.AddEntity(conversation);
}
return(conversation);
}
/// <summary>
/// Entity execution has finished.
/// </summary>
public override void EntityExecutionFinished(ExecutionEntity entity)
{
ExecutionEntityWithReply entityWithReply = (ExecutionEntityWithReply)entity;
if (entityWithReply.ReplyMessage != null)
{// The other side replied.
ArbiterClientId messageReceiver = ReceiverID;
if (_receiverID.Equals(entity.ReceiverID))
{// Swap direction, receiver must now send.
messageReceiver = SenderID;
}
ExecutionEntityWithReply replyEntity = new ExecutionEntityWithReply(this, messageReceiver, entityWithReply.TimeOut,
MessageContainer.DuplicateMessage(entityWithReply.ReplyMessage, false));
ExecutionManager.AddExecutionEntity(replyEntity);
}
else
{// We received a nothing, conversation done, die.
this.Die();
}
}
/// <summary>
///
/// </summary>
public Message DirectCall(ArbiterClientId receiverID, TransportMessage message)
{
return(base.DirectCall(receiverID, message));
}
/// <summary>
///
/// </summary>
protected void SendAddressed(ArbiterClientId receiverID, TransportMessage message)
{
DoSendCustom(true, Guid.NewGuid(), null, 0, receiverID, this.SubscriptionClientID, message, DefaultTimeOut);
}
/// <summary>
/// Allows to retrieve an instance of a client by its ID. Use with caution since it breaks the independence model
/// and is applied only in special cases.
/// </summary>
public IArbiterClient GetClientByID(ArbiterClientId id)
{
return(GetClientByID(id, false));
}
public ExecutionEntityWithReply(Conversation conversation, ArbiterClientId receiverID, TimeSpan timeOut, Message message)
: base(conversation, receiverID, timeOut, message)
{
}
/// <summary>
/// Deserialization constructor.
/// </summary>
/// <param name="singleThreadOnly"></param>
public ArbiterClientBase(SerializationInfo info, StreamingContext context)
{
_subscriptionClientId = (ArbiterClientId)info.GetValue("clientId", typeof(ArbiterClientId));
_messageFilter = (MessageFilter)info.GetValue("messageFilter", typeof(MessageFilter));
}
/// <summary>
///
/// </summary>
public Conversation(ExecutionManager executionManager, ArbiterClientId ownerID, TimeSpan timeOut)
: base(timeOut)
{
_ownerID = ownerID;
_executionManager = executionManager;
}
/// <summary>
///
/// </summary>
public TransportMessageFilter(ArbiterClientId ownerID) : base(true)
{
_ownerID = ownerID;
}
///
/// </summary>
public ConversationMultiPoint(ExecutionManager executionManager, Message message, ArbiterClientId senderID, IEnumerable <ArbiterClientId> receivers, TimeSpan timeOut)
: base(executionManager, senderID, timeOut)
{
_receivers.AddRange(receivers);
foreach (ArbiterClientId receiverID in receivers)
{
ExecutionEntity entity = new ExecutionEntity(this, receiverID, TimeSpan.Zero, MessageContainer.DuplicateMessage(message, false));
_executingEntities.Add(entity);
ExecutionManager.AddExecutionEntity(entity);
}
}
/// <summary>
/// Constructor.
/// </summary>
public ConversationPointToPoint(ExecutionManager executionManager, Message message, ArbiterClientId senderID, ArbiterClientId receiverID, TimeSpan timeOut)
: base(executionManager, senderID, timeOut)
{
_receiverID = receiverID;
ExecutionEntityWithReply entity = new ExecutionEntityWithReply(this, receiverID, timeOut,
MessageContainer.DuplicateMessage(message, false));
ExecutionManager.AddExecutionEntity(entity);
}
public TExpectedMessageClass SendAndReceiveAddressed <TExpectedMessageClass>(
ArbiterClientId receiverID, TransportMessage message, TimeSpan timeOut)
where TExpectedMessageClass : TransportMessage
{
return(base.SendAndReceiveAddressed <TExpectedMessageClass>(receiverID, message, timeOut));
}
///// <summary>
/////
///// </summary>
//public Message DirectCall(ArbiterClientId receiverID, TransportMessage message)
//{
// return base.DirectCall(receiverID, message);
//}
public new void SendAddressed(ArbiterClientId receiverID, TransportMessage message)
{
base.SendAddressed(receiverID, message);
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="receiver"></param>
/// <param name="timeOut"></param>
/// <param name="requestMessage"></param>
public ExecutionEntity(IExecutor executor, ArbiterClientId receiverID, TimeSpan timeOut, Message message) : base(timeOut)
{
_executor = executor;
_receiverID = receiverID;
_message = message;
}