public override object Manage(CommandMessage commandMessage)
{
object result = base.Manage(commandMessage);
switch (commandMessage.operation)
{
case CommandMessage.SubscribeOperation:
lock (SyncRoot)
{
bool enableReceive = _consumers.Count == 0;
_consumers[commandMessage.clientId] = null;
if (enableReceive)
EnableReceiving(true);
}
break;
case CommandMessage.UnsubscribeOperation:
lock (SyncRoot)
{
if (_consumers.Contains(commandMessage.clientId))
{
_consumers.Remove(commandMessage.clientId);
if (_consumers.Count == 0)
EnableReceiving(false);
}
}
break;
}
return result;
}
private IDictionary Invoke(IDictionary request)
{
ValidationUtils.ArgumentNotNull(request, "request");
object error = null;
object result = null;
ISession session = this.MessageBroker.SessionManager.GetHttpSession(HttpContext.Current);
FluorineContext.Current.SetSession(session);
//Context initialized, notify listeners.
if (session != null && session.IsNew)
session.NotifyCreated();
// Get the ID of the request.
object id = request["id"];
string credentials = request["credentials"] as string;
if (!StringUtils.IsNullOrEmpty(credentials))
{
try
{
CommandMessage commandMessage = new CommandMessage(CommandMessage.LoginOperation);
commandMessage.body = credentials;
IMessage message = this.MessageBroker.RouteMessage(commandMessage);
if (message is ErrorMessage)
{
error = FromException(message as ErrorMessage);
return CreateResponse(id, result, error);
}
}
catch (Exception ex)
{
error = FromException(ex);
return CreateResponse(id, result, error);
}
}
// If the ID is not there or was not set then this is a notification
// request from the client that does not expect any response. Right
// now, we don't support this.
bool isNotification = JavaScriptConvert.IsNull(id);
if (isNotification)
throw new NotSupportedException("Notification are not yet supported.");
log.Debug(string.Format("Received request with the ID {0}.", id.ToString()));
// Get the method name and arguments.
string methodName = StringUtils.MaskNullString((string)request["method"]);
if (methodName.Length == 0)
throw new JsonRpcException("No method name supplied for this request.");
if (methodName == "clearCredentials")
{
try
{
CommandMessage commandMessage = new CommandMessage(CommandMessage.LogoutOperation);
IMessage message = this.MessageBroker.RouteMessage(commandMessage);
if (message is ErrorMessage)
{
error = FromException(message as ErrorMessage);
return CreateResponse(id, result, error);
}
else
return CreateResponse(id, message.body, null);
}
catch (Exception ex)
{
error = FromException(ex);
return CreateResponse(id, result, error);
}
}
//Info("Invoking method {1} on service {0}.", ServiceName, methodName);
// Invoke the method on the service and handle errors.
try
{
RemotingMessage message = new RemotingMessage();
message.destination = this.Request.QueryString["destination"] as string;
message.source = this.Request.QueryString["source"] as string;
message.operation = methodName;
object argsObject = request["params"];
object[] args = (argsObject as JavaScriptArray).ToArray();
message.body = args;
IMessage response = this.MessageBroker.RouteMessage(message);
if (response is ErrorMessage)
error = FromException(response as ErrorMessage);
else
result = response.body;
/*
Method method = serviceClass.GetMethodByName(methodName);
object[] args;
string[] names = null;
object argsObject = request["params"];
IDictionary argByName = argsObject as IDictionary;
if (argByName != null)
{
names = new string[argByName.Count];
argByName.Keys.CopyTo(names, 0);
args = new object[argByName.Count];
argByName.Values.CopyTo(args, 0);
}
else
{
args = (argsObject as JavaScriptArray).ToArray();
}
result = method.Invoke(instance, names, args);
*/
}
catch (Exception ex)
{
log.Error(ex.Message, ex);
throw;
}
// Setup and return the response object.
return CreateResponse(id, result, error);
}
/// <summary>
/// Closes the handler.
/// </summary>
public void Close()
{
lock (this.SyncRoot)
{
if (IsClosed || IsClosing)
return;
SetIsClosing(true);
}
if (_session != null)
_session.RemoveSessionDestroyedListener(this);
_flexClient.UnregisterEndpointPushHandler(this, _endpoint.Id);
#if !(NET_1_1)
List<IMessage> list = new List<IMessage>(1);
#else
ArrayList list = new ArrayList(1);
#endif
CommandMessage disconnect = new CommandMessage(CommandMessage.DisconnectOperation);
PushMessage(disconnect);
// Invalidate associated subscriptions. This doesn't attempt to notify the client.
foreach (MessageClient messageClient in _messageClients)
messageClient.Invalidate();
lock (this.SyncRoot)
{
SetIsClosed(true);
SetIsClosing(false);
}
lock (this.SyncRoot)
{
Monitor.PulseAll(this.SyncRoot);
}
}
protected override MessageBase CopyImpl(MessageBase clone)
{
// Instantiate the clone, if a derived type hasn't already.
if (clone == null) clone = new CommandMessage();
// Allow base type(s) to copy their state into the new clone.
base.CopyImpl(clone);
// Copy our state into the clone.
((CommandMessage)clone)._messageRefType = _messageRefType;
((CommandMessage)clone)._operation = _operation;
return clone;
}
public override IMessage ServiceMessage(IMessage message)
{
if (FluorineContext.Current.Client != null)
FluorineContext.Current.Client.Renew();
if (message is CommandMessage)
{
CommandMessage commandMessage = message as CommandMessage;
switch (commandMessage.operation)
{
case CommandMessage.PollOperation:
{
if (log.IsDebugEnabled)
log.Debug(__Res.GetString(__Res.Endpoint_HandleMessage, this.Id, message.ToString()));
if (FluorineContext.Current.Client != null)
FluorineContext.Current.Client.Renew();
//IMessage[] messages = null;
IList messages = null;
_waitingPollRequests.Increment();
int waitIntervalMillis = this.ChannelDefinition.Properties.WaitIntervalMillis != -1 ? this.ChannelDefinition.Properties.WaitIntervalMillis : 60000;// int.MaxValue;
if (commandMessage.HeaderExists(CommandMessage.FluorineSuppressPollWaitHeader))
waitIntervalMillis = 0;
//If async handling was not set long polling is not supported
if (!FluorineConfiguration.Instance.FluorineSettings.Runtime.AsyncHandler)
waitIntervalMillis = 0;
if (this.ChannelDefinition.Properties.MaxWaitingPollRequests <= 0 || _waitingPollRequests.Value >= this.ChannelDefinition.Properties.MaxWaitingPollRequests)
waitIntervalMillis = 0;
if (message.destination != null && message.destination != string.Empty)
{
string clientId = commandMessage.clientId as string;
MessageDestination messageDestination = this.GetMessageBroker().GetDestination(message.destination) as MessageDestination;
MessageClient client = messageDestination.SubscriptionManager.GetSubscriber(clientId);
client.Renew();
//messages = client.GetPendingMessages();
}
else
{
//if (FluorineContext.Current.Client != null)
// messages = FluorineContext.Current.Client.GetPendingMessages(waitIntervalMillis);
}
if (FluorineContext.Current.Client != null)
{
IEndpointPushHandler handler = FluorineContext.Current.Client.GetEndpointPushHandler(this.Id);
if (handler != null)
messages = handler.GetPendingMessages();
if (messages == null)
{
lock (handler.SyncRoot)
{
Monitor.Wait(handler.SyncRoot, waitIntervalMillis);
}
messages = handler.GetPendingMessages();
}
}
_waitingPollRequests.Decrement();
IMessage response = null;
if (messages == null || messages.Count == 0)
response = new AcknowledgeMessage();
else
{
CommandMessage resultMessage = new CommandMessage();
resultMessage.operation = CommandMessage.ClientSyncOperation;
resultMessage.body = messages;
response = resultMessage;
}
if (log.IsDebugEnabled)
log.Debug(__Res.GetString(__Res.Endpoint_Response, this.Id, response.ToString()));
return response;
}
case CommandMessage.SubscribeOperation:
{
/*
if (FluorineContext.Current.Client == null)
FluorineContext.Current.SetCurrentClient(this.GetMessageBroker().ClientRegistry.GetClient(message));
RemotingConnection remotingConnection = null;
foreach (IConnection connection in FluorineContext.Current.Client.Connections)
{
if (connection is RemotingConnection)
{
remotingConnection = connection as RemotingConnection;
break;
}
}
if (remotingConnection == null)
{
remotingConnection = new RemotingConnection(this, null, FluorineContext.Current.Client.Id, null);
FluorineContext.Current.Client.Renew(this.ClientLeaseTime);
remotingConnection.Initialize(FluorineContext.Current.Client);
}
FluorineWebContext webContext = FluorineContext.Current as FluorineWebContext;
webContext.SetConnection(remotingConnection);
*/
if (this.ChannelDefinition.Properties.IsPollingEnabled)
{
//Create and forget, client will close the notifier
IEndpointPushHandler handler = FluorineContext.Current.Client.GetEndpointPushHandler(this.Id);
if( handler == null )
handler = new EndpointPushNotifier(this, FluorineContext.Current.Client);
/*
lock (_endpointPushHandlers.SyncRoot)
{
_endpointPushHandlers.Add(notifier.Id, notifier);
}
*/
}
}
break;
case CommandMessage.DisconnectOperation:
{
if (log.IsDebugEnabled)
log.Debug(__Res.GetString(__Res.Endpoint_HandleMessage, this.Id, message.ToString()));
if (FluorineContext.Current.Client != null && FluorineContext.Current.Client.IsValid)
{
IList messageClients = FluorineContext.Current.Client.MessageClients;
if (messageClients != null)
{
foreach (MessageClient messageClient in messageClients)
{
messageClient.Invalidate();
}
}
FluorineContext.Current.Client.Invalidate();
}
if (FluorineContext.Current.Session != null)
{
FluorineContext.Current.Session.Invalidate();
}
//Disconnect command is received from a client channel.
//The response returned by this method is not guaranteed to get to the client, which is free to terminate its physical connection at any point.
IMessage response = new AcknowledgeMessage();
if (log.IsDebugEnabled)
log.Debug(__Res.GetString(__Res.Endpoint_Response, this.Id, response.ToString()));
return response;
}
}
}
return base.ServiceMessage(message);
}
/// <summary>
/// Invalidates the MessageClient.
/// </summary>
/// <param name="notifyClient">Push a subscription invalidation message to the client.</param>
public void Invalidate(bool notifyClient)
{
lock (this.SyncRoot)
{
if (!IsValid || IsInvalidating)
return; // Already shutting down.
SetIsInvalidating(true);
_messageDestination.SubscriptionManager.CancelTimeout(this);
}
// Build a subscription invalidation message and push to the client if it is still valid.
if (notifyClient && _client != null && _client.IsValid)
{
CommandMessage commandMessage = new CommandMessage();
commandMessage.destination= _messageDestination.Id;
commandMessage.clientId = _clientId;
commandMessage.operation = CommandMessage.SessionInvalidateOperation;
MessageService messageService = _messageDestination.Service as MessageService;
object[] subscribers = new object[] { commandMessage.clientId };
try
{
messageService.PushMessageToClients(subscribers, commandMessage);
}
catch (MessageException)
{ }
}
// Notify listeners that we're being invalidated.
if (_messageClientDestroyedListeners != null && _messageClientDestroyedListeners.Count != 0)
{
foreach (IMessageClientListener listener in _messageClientDestroyedListeners.Keys )
{
listener.MessageClientDestroyed(this);
}
_messageClientDestroyedListeners.Clear();
}
// Generate unsubscribe messages for all of the MessageClient's subscriptions and
// route them to the destination this MessageClient is subscribed to.
// Some adapters manage their own subscription state.
ArrayList unsubscribeMessages = new ArrayList();
lock (this.SyncRoot)
{
foreach(SubscriptionInfo subscription in _subscriptions)
{
CommandMessage unsubscribeMessage = new CommandMessage();
unsubscribeMessage.destination = _messageDestination.Id;
unsubscribeMessage.clientId = _clientId;
unsubscribeMessage.operation = CommandMessage.UnsubscribeOperation;
unsubscribeMessage.SetHeader(CommandMessage.SessionInvalidatedHeader, true);
unsubscribeMessage.SetHeader(CommandMessage.SelectorHeader, subscription.Selector);
unsubscribeMessage.SetHeader(AsyncMessage.SubtopicHeader, subscription.Subtopic);
unsubscribeMessages.Add(unsubscribeMessage);
}
}
// Release the lock and send the unsub messages.
foreach (CommandMessage commandMessage in unsubscribeMessages)
{
try
{
_messageDestination.Service.ServiceMessage(commandMessage);
}
catch (MessageException me)
{
if (log.IsDebugEnabled)
log.Debug("MessageClient: " + _clientId + " issued an unsubscribe message during invalidation that was not processed but will continue with invalidation.", me);
}
}
//TODO
RemoveSubscription(this.Selector, this.Subtopic);
lock (this.SyncRoot)
{
// If we didn't clean up all subscriptions log an error and continue with shutdown.
int remainingSubscriptionCount = _subscriptions.Count;
if (remainingSubscriptionCount > 0 && log.IsErrorEnabled)
log.Error("MessageClient: " + _clientId + " failed to remove " + remainingSubscriptionCount + " subscription(s) during invalidation");
}
_messageDestination.SubscriptionManager.RemoveSubscriber(this);
lock (this.SyncRoot)
{
SetIsValid(false);
SetIsInvalidating(false);
}
}
/// <summary>
/// Accept a command from the adapter's service (subscribe, unsubscribe and ping operations).
/// </summary>
/// <param name="commandMessage"></param>
/// <returns></returns>
public virtual object Manage(CommandMessage commandMessage)
{
return new AcknowledgeMessage();
}
public override object ServiceMessage(IMessage message)
{
CommandMessage commandMessage = message as CommandMessage;
if( commandMessage != null )
{
//Sub/unsub handled by base class
return base.ServiceMessage(commandMessage);
}
else
{
AsyncMessage responseMessage = null;
DataMessage dataMessage = message as DataMessage;
DataDestination dataDestination = this.GetDestination(dataMessage) as DataDestination;
if( dataDestination.SubscriptionManager.GetSubscriber(dataMessage.clientId as string) == null )
{
//Subscribe here as DS doesn't send a separate subscribe command
CommandMessage commandMessageSubscribe = new CommandMessage();
commandMessageSubscribe.destination = dataDestination.Id;
commandMessageSubscribe.operation = CommandMessage.SubscribeOperation;
commandMessageSubscribe.clientId = dataMessage.clientId as string;
string endpointId = dataMessage.GetHeader(MessageBase.EndpointHeader) as string;
commandMessageSubscribe.headers[MessageBase.EndpointHeader] = endpointId;
string flexClientIdHeader = dataMessage.GetHeader(MessageBase.FlexClientIdHeader) as string;
if( flexClientIdHeader != null )
commandMessageSubscribe.headers[MessageBase.FlexClientIdHeader] = flexClientIdHeader;
IEndpoint endpoint = GetMessageBroker().GetEndpoint(endpointId);
endpoint.ServiceMessage(commandMessageSubscribe);//route through the endpoint again
//base.ServiceMessage(commandMessageSubscribe);
}
switch(dataMessage.operation)
{
case DataMessage.FillOperation:
responseMessage = ExecuteFillOperation(message);
break;
case DataMessage.GetOperation:
responseMessage = ExecuteGetOperation(message);
break;
case DataMessage.BatchedOperation:
case DataMessage.MultiBatchOperation:
case DataMessage.TransactedOperation:
responseMessage = ExecuteMultiBatchOperation(message);
break;
case DataMessage.PageItemsOperation:
responseMessage = ExecutePageItemsOperation(message);
break;
case DataMessage.PageOperation:
responseMessage = ExecutePageOperation(message);
break;
case DataMessage.ReleaseCollectionOperation:
responseMessage = ExecuteReleaseCollectionOperation(message);
break;
case DataMessage.GetSequenceIdOperation:
responseMessage = ExecuteGetSequenceIdOperation(message);
break;
case DataMessage.ReleaseItemOperation:
responseMessage = ExecuteReleaseItemOperation(message);
break;
default:
if(log.IsErrorEnabled)
log.Error(__Res.GetString(__Res.DataService_Unknown, dataMessage.operation));
responseMessage = new AcknowledgeMessage();
break;
}
responseMessage.clientId = message.clientId;
responseMessage.correlationId = message.messageId;
//Dump();
return responseMessage;
}
}
