Пример #1
0
        protected virtual void Serve(LampRequest request)
        {
            var record = GetLampDb(request.Id);
            var client = new LampClient(record);

            record.ProcessStateChanges(request.Data);

            client.SetState().Wait();       // Synchronously set the state. It may throw an exception

            UpdateLampDb(record);
        }
Пример #2
0
        public void Schedule(LampRequest request)
        {
            lock (_queue) _queue.Enqueue(request);

            // Is there already a task running to service the request?
            bool noThread = _mutex.WaitOne(0);

            if (noThread)
            {
                Task.Run(() => ServiceRequests());
                _mutex.ReleaseMutex();
            }
        }
Пример #3
0
        protected void ServiceRequests()
        {
            // Obtain Mutex to indicate that we are servicing requests
            _mutex.WaitOne();

            LampRequest request = null;

            try
            {
                while (true)
                {
                    // Seems like infinite loop, but empty queue will throw exception

                    lock (_queue) request = _queue.Dequeue();

                    Serve(request);

                    // If there are more requests, sneak in a little delay to make sure the lamps can keep up
                    _queue.Peek();
                    // If code made it here without exception, there is another item
                    Thread.Sleep(200);
                }
            }
            catch (InvalidOperationException)
            {
                // Queue is empty, this is fine. This thread will end.
            }
            catch (Exception ex)
            {
                // Error processing request
                Logger.LogError("Error processing request {0}, Exception {1} Message {2}", request, ex.GetType().Name, ex.Message);
            }
            finally
            {
                // Release Mutex to let new thread be started
                _mutex.ReleaseMutex();
            }
        }