public override List <ClientId> GetAllClientsIds()
{
List <ClientId> result = new List <ClientId>();
foreach (MessageBusClient client in this._clientsHotSwap)
{
if (client == null)
{// This is normal since items are never removed from list, only set to null.
continue;
}
ClientId id = client.Id;
if (id != null)
{
result.Add(id);
}
}
return(result);
}
/// <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>
/// Needs to consume both client and id, since it may be used with client == null.
/// </summary>
/// <returns>The index of the newly registered client, or InvalidClientIndex on failure.</returns>
protected int DoAddClient(MessageBusClient client, ClientId clientId)
{
int index = 0;
if (client != null && client.Id.Equals(clientId) == false)
{
#if Matrix_Diagnostics
InstanceMonitor.Error("Client id mismatch.");
#endif
return(ClientId.InvalidMessageBusClientIndex);
}
lock (_syncRoot)
{
if (clientId.LocalMessageBusIndex != ClientId.InvalidMessageBusClientIndex)
{// Client already has an Index assigned, must reuse it.
MessageBusClient existingInstance = null;
if (_clientsHotSwap.TryGetValue(clientId.LocalMessageBusIndex, ref existingInstance))
{// Successfully acquired existing value for client.
// Check if we are OK to assign to this position.
if (existingInstance != null && existingInstance != client)
{// There is something else at that position.
#if Matrix_Diagnostics
InstanceMonitor.Error("Client id mismatch.");
#endif
return(ClientId.InvalidMessageBusClientIndex);
}
}
else
{// Failed to acquire value with this message bus index.
#if Matrix_Diagnostics
InstanceMonitor.Error("Client with this message bus index can not be assigned.");
#endif
return(ClientId.InvalidMessageBusClientIndex);
}
// Assign the client to its former spot.
_clientsHotSwap[clientId.LocalMessageBusIndex] = client;
index = clientId.LocalMessageBusIndex;
}
else
{
if (GetClientIndexByGuid(clientId.Guid) >= 0)
{// Already added.
#if Matrix_Diagnostics
InstanceMonitor.Error("Message bus client [" + clientId.ToString() + "] added more than once.");
#endif
return(ClientId.InvalidMessageBusClientIndex);
}
// Add the client to a new spot.
_clientsHotSwap.Add(client);
index = _clientsHotSwap.Count - 1;
}
// This type of assignment will also work with multiple entries.
// This performs an internal hotswap.
_guidToIndexHotSwap[clientId.Guid] = index;
}
if (client != null &&
client.AssignMessageBus(this, index) == false)
{
#if Matrix_Diagnostics
InstanceMonitor.OperationError("A client has denied adding to Message bus.");
#endif
RemoveClient(client, true);
return(ClientId.InvalidMessageBusClientIndex);
}
client.UpdateEvent += new MessageBusClient.ClientUpdateDelegate(client_UpdateEvent);
RaiseClientAddedEvent(clientId);
return(index);
}
/// <summary>
///
/// </summary>
public override bool ContainsClient(ClientId clientId)
{
return(_guidToIndexHotSwap.ContainsKey(clientId.Guid));
}
protected abstract Outcomes DoSend(ClientId senderIndex, IEnumerable <ClientId> receiversIndeces, Envelope envelope, TimeSpan?requestConfirmTimeout, bool showErrorsDiagnostics);
/// <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>
/// 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));
}
/// <summary> /// Obtain an instance of the client, in case it is a local client /// and the instance is accessible. This will not work for remote /// (network) associated clients. /// </summary> public abstract MessageBusClient GetLocalClientInstance(ClientId clientId);
public abstract List <string> GetClientSourceTypes(ClientId clientId);
public abstract Type GetClientType(ClientId clientId);
public abstract bool ContainsClient(ClientId client);
/// <summary>
/// Constructor.
/// </summary>
public EnvelopeStamp(long stampId, ClientId receiverId, ClientId senderId)
{
_stampId = stampId;
_receiverId = receiverId;
_senderId = senderId;
}