Ejemplo n.º 1
0
        /// <summary>
        /// Connects to the given adapters
        /// </summary>
        /// <param name="adapterAddresses"></param>
        /// <param name="timeout">The timout in milliseconds</param>
        public bool Connect(MIPAddress mmiRegisterAddress, TimeSpan timeout, string AvatarID)
        {
            //Create a list representing the adapter descriptions
            List <MAdapterDescription> adapterDescriptions = new List <MAdapterDescription>();

            //Create a concurrent dictionary for storing the createad MMUAccesses
            ConcurrentDictionary <IAdapter, List <MotionModelUnitAccess> > adapterMMUAccesses = new ConcurrentDictionary <IAdapter, List <MotionModelUnitAccess> >();

            //Get all registered adapters -> Execute this task in background with the imposed timeout
            bool adapterDescriptionReceived = Threading.ExecuteTask((CancellationTokenSource cls) =>
            {
                //The actual function which is executed in the background
                while (!cls.IsCancellationRequested)
                {
                    try
                    {
                        //Get all adapter descriptions and create a client for this purpose
                        using (MMIRegisterServiceClient client = new MMIRegisterServiceClient(mmiRegisterAddress.Address, mmiRegisterAddress.Port))
                        {
                            adapterDescriptions = client.Access.GetRegisteredAdapters(SessionId);
                            break;
                        }
                    }
                    catch (Exception)
                    {
                        Thread.Sleep(100);
                    }
                }
            }, timeout);

            //Directly return if no adapter description was received
            if (!adapterDescriptionReceived)
            {
                return(false);
            }

            //Create the service access
            this.ServiceAccess = new ServiceAccess(mmiRegisterAddress, SessionId);

            //Fetch all adapter descriptions and create a new adapter instance
            foreach (MAdapterDescription description in adapterDescriptions)
            {
                //Skip if adapter is already available
                if (this.Adapters.Exists(s => s.Description.Name == description.Name && description.Addresses[0] == description.Addresses[0] && s.Description.Addresses[0].Port == description.Addresses[0].Port))
                {
                    continue;
                }

                //Add a new remote adapter instance to the list
                this.Adapters.Add(new RemoteAdapterAccess(description.Addresses[0].Address, description.Addresses[0].Port, description, this));
            }


            ///Dictionary which contains the connected adapters
            ConcurrentDictionary <IAdapter, bool> connectedAdapters = new ConcurrentDictionary <IAdapter, bool>();


            //Create the sessions for each adapter in parallel
            bool success = Threading.ExecuteTasksParallel(this.Adapters, (IAdapter adapter, CancellationTokenSource cls) =>
            {
                //Start the adapter
                adapter.Start();

                //Create the session
                adapter.CreateSession(this.SessionId, this.SkeletonAccess.GetAvatarDescription(AvatarID));

                //Add flag if finished
                connectedAdapters.TryAdd(adapter, true);
            }, timeout);

            //Remove all adapters not being connected (therfore iterate over all added adapters)
            for (int i = this.Adapters.Count - 1; i >= 0; i--)
            {
                //Remove the adapter if not connected
                if (!connectedAdapters.ContainsKey(this.Adapters[i]))
                {
                    //Close the connection
                    this.Adapters[i].CloseConnection();
                    this.Adapters.Remove(this.Adapters[i]);
                }
            }

            //Return true if at least one adapter is connected
            return(this.Adapters.Count > 0);
        }