/// <summary>
/// Obtain client based on its index.
/// </summary>
protected MessageBusClient GetLocalClientByIndex(int id)
{
MessageBusClient result = null;
if (_clientsHotSwap.TryGetValue(id, ref result))
{
return(result);
}
return(null);
}
/// <summary>
/// Helper, works on local clients only.
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
protected ClientId GetLocalClientIdByIndex(int id)
{
MessageBusClient client = GetLocalClientByIndex(id);
if (client == null)
{
return(null);
}
return(client.Id);
}
/// <summary>
/// Obtain the type of the client with this id, if client is available.
/// </summary>
public override Type GetClientType(ClientId clientId)
{
if (clientId.MessageBus != this)
{
return(null);
}
MessageBusClient client = GetLocalClientByIndex(clientId.LocalMessageBusIndex);
if (client == null)
{
return(null);
}
return(client.GetType());
}
/// <summary>
///
/// </summary>
/// <param name="clientId"></param>
/// <returns></returns>
public override List <string> GetClientSourceTypes(ClientId clientId)
{
if (clientId.MessageBus != this)
{
return(null);
}
MessageBusClient client = GetLocalClientByIndex(clientId.LocalMessageBusIndex);
if (client == null)
{
return(null);
}
return(ReflectionHelper.GetTypeNameAndRelatedTypes(client.OptionalSourceType));
}
/// <summary>
/// Add a client to the message bus.
/// </summary>
public override bool AddClient(MessageBusClient client)
{
if (client == null)
{
return(false);
}
if (client.ExecutionStrategy == null)
{// Assign the client an instance of the default type of execution strategy used.
client.SetupExecutionStrategy(new ThreadPoolFastExecutionStrategy(true));
}
if (DoAddClient(client, client.Id) == ClientId.InvalidMessageBusClientIndex)
{
return(false);
}
return(true);
}
/// <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>
/// Remove a client from the bus.
/// </summary>
public override bool RemoveClient(MessageBusClient client, bool isPermanent)
{
int id = client.Id.LocalMessageBusIndex;
lock (_syncRoot)
{
if (_clientsHotSwap.Count <= id || id < 0)
{
#if Matrix_Diagnostics
SystemMonitor.OperationError("Failed to remove client from message bus.");
#endif
return(false);
}
if (_clientsHotSwap[id] != client)
{
#if Matrix_Diagnostics
SystemMonitor.OperationError("Client [" + client.Id.ToString() + "] not removed, since it does not belong to this message bus with this ID.");
#endif
return(false);
}
// Performs an internal hot swap.
_clientsHotSwap[id] = null;
// Performs an internal hot swap.
_guidToIndexHotSwap[client.Id.Guid] = ClientId.InvalidMessageBusClientIndex;
}
client.UpdateEvent -= new MessageBusClient.ClientUpdateDelegate(client_UpdateEvent);
client.ReleaseMessageBus();
RaiseClientRemovedEvent(client.Id, isPermanent);
return(true);
}
protected virtual void client_UpdateEvent(MessageBusClient client)
{
RaiseClientUpdateEvent(client.Id);
}
protected virtual void client_UpdateEvent(MessageBusClient client)
{
RaiseClientUpdateEvent(client.Id);
}
/// <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);
}
public abstract bool AddClient(MessageBusClient client);
public abstract bool RemoveClient(MessageBusClient client, bool isPermanent);
public abstract bool AddClient(MessageBusClient client);
public abstract bool RemoveClient(MessageBusClient client, bool isPermanent);
protected override void client_UpdateEvent(MessageBusClient client)
{
base.client_UpdateEvent(client);
// Also send this notification to clients.
int[] keys;
lock (_syncRoot)
{
keys = GeneralHelper.EnumerableToArray<int>(_remoteClientsNetIds.Keys);
}
ClientUpdateMessage message = new ClientUpdateMessage() {
ClientId = client.Id, MessageId = PendingMessageId, RequestResponse = false };
foreach (int key in keys)
{
ToClient(key, message, null);
}
}
/// <summary>
/// Remove a client from the bus.
/// </summary>
public override bool RemoveClient(MessageBusClient client, bool isPermanent)
{
int id = client.Id.LocalMessageBusIndex;
lock (_syncRoot)
{
if (_clientsHotSwap.Count <= id || id < 0)
{
#if Matrix_Diagnostics
SystemMonitor.OperationError("Failed to remove client from message bus.");
#endif
return false;
}
if (_clientsHotSwap[id] != client)
{
#if Matrix_Diagnostics
SystemMonitor.OperationError("Client [" + client.Id.ToString() + "] not removed, since it does not belong to this message bus with this ID.");
#endif
return false;
}
// Performs an internal hot swap.
_clientsHotSwap[id] = null;
// Performs an internal hot swap.
_guidToIndexHotSwap[client.Id.Guid] = ClientId.InvalidMessageBusClientIndex;
}
client.UpdateEvent -= new MessageBusClient.ClientUpdateDelegate(client_UpdateEvent);
client.ReleaseMessageBus();
RaiseClientRemovedEvent(client.Id, isPermanent);
return true;
}
/// <summary>
/// Add a client to the message bus.
/// </summary>
public override bool AddClient(MessageBusClient client)
{
if (client == null)
{
return false;
}
if (client.ExecutionStrategy == null)
{// Assign the client an instance of the default type of execution strategy used.
client.SetupExecutionStrategy(new ThreadPoolFastExecutionStrategy(true));
}
if (DoAddClient(client, client.Id) == ClientId.InvalidMessageBusClientIndex)
{
return false;
}
return true;
}
/// <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;
}
protected override void client_UpdateEvent(MessageBusClient client)
{
base.client_UpdateEvent(client);
// Also send this notification to server.
ToServer(new ClientUpdateMessage() { ClientId = client.Id, MessageId = PendingMessageId, RequestResponse = false }, null);
}
