InstanceContext CreateInstanceContext(MessageProcessingContext mrc)
{
InstanceContext iCtx = null;
DispatchRuntime dispatchRuntime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
IInstanceContextProvider p = dispatchRuntime.InstanceContextProvider;
if (p != null)
{
iCtx = p.GetExistingInstanceContext(mrc.IncomingMessage, mrc.OperationContext.Channel);
}
if (iCtx == null)
{
ServiceHostBase host = dispatchRuntime.ChannelDispatcher.Host;
iCtx = new InstanceContext(dispatchRuntime.ChannelDispatcher.Host, null, false);
// FIXME: could be easier way to identify session channel
if ((mrc.Channel is ISessionChannel <IInputSession> || mrc.Channel is ISessionChannel <IDuplexSession>) && host.Description.Behaviors.Find <ServiceBehaviorAttribute> ().InstanceContextMode == InstanceContextMode.PerSession)
{
mrc.Channel.Closed += delegate { iCtx.Close(); }
}
;
}
iCtx.InstanceManager = new InstanceManager(dispatchRuntime);
return(iCtx);
}
}
InstanceContext CreateInstanceContext(MessageProcessingContext mrc)
{
InstanceContext iCtx = null;
DispatchRuntime dispatchRuntime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
IInstanceContextProvider p = dispatchRuntime.InstanceContextProvider;
if (p != null)
{
iCtx = p.GetExistingInstanceContext(mrc.IncomingMessage, mrc.OperationContext.Channel);
}
if (iCtx == null)
{
ServiceHostBase host = dispatchRuntime.ChannelDispatcher.Host;
iCtx = new InstanceContext(dispatchRuntime.ChannelDispatcher.Host, null, false);
}
iCtx.InstanceManager = new InstanceManager(dispatchRuntime);
return(iCtx);
}
public InstanceContext GetExistingInstanceContext(Message message, IContextChannel channel)
{
//No OperationContext here!
try
{
m_InstanceAccess.WaitOne();
//Remove the instance id context if it exists. Treat each message as an activation request so that we can reassign the InstanceId on the service-side.
bool found = RemoveInstanceIdFromMessage(message);
ActorId actorId = ActorIdHelper.Get(message.Headers);
Guid instanceId = ActorManager.GetInstance(actorId);
ActorManager.UpdateIdleTime(actorId);
if ((instanceId.Equals(Guid.Empty)) && (message.Headers.Action.Contains("Activate") == false))
{
//Message received after actor instance completed. Can only occur when a client improperly caches an ActorProxy after completing the instance.
//Clear context and reset InstanceId so that InitializeInstanceContext can handle the message as an initiating request.
message.Properties.Remove(ContextMessageProperty.Name);
}
else if (instanceId.Equals(Guid.Empty) == false)
{
//Always use the managed InstanceId. It may differ from the InstanceId in the ActorId context after an Actor completion.
SetInstanceIdInMessage(message, instanceId.ToString());
}
InstanceContext context = m_PreviousProvider.GetExistingInstanceContext(message, channel);
if (context != null)
{
m_InstanceAccess.ReleaseMutex();
}
return(context);
}
catch (Exception exception)
{
m_InstanceAccess.ReleaseMutex();
throw exception;
}
}
