コード例 #1
0
        public static Task Start(Service service, bool smartStart = false, int smartStartSeconds = 10)
        {
            return(Task.Factory.StartNew(() =>
            {
                using (var wakeLock = Platform.AquireWakeLock("DisaStart"))
                {
                    if (IsRunning(service))
                    {
                        Utils.DebugPrint(
                            "The service is already running. Preventing possible deadlock. SmartStart? " +
                            smartStart);
                        return;
                    }

                    if (IsStarting(service))
                    {
                        Utils.DebugPrint(
                            "The service is being started. Preventing possible deadlock. SmartStart? " +
                            smartStart);
                        return;
                    }

                    Action epilogue = () => { GetFlags(service).Starting = false; };

                    lock (service)
                    {
                        GetFlags(service).Aborted = false;
                        GetFlags(service).AbortedSpecial = false;
                        GetFlags(service).Starting = true;
                        GetFlags(service).ManualSettingsNeeded = false;

                        Utils.DebugPrint("Loading settings for service " + service.Information.ServiceName);
                        try
                        {
                            var settings = SettingsManager.Load(service);
                            if (settings == null)
                            {
                                Utils.DebugPrint("Failed to load saved settings for "
                                                 + service.Information.ServiceName +
                                                 ". Will try to initialize with no settings...");
                                if (!service.InitializeDefault())
                                {
                                    Utils.DebugPrint(
                                        "Service doesn't allow initializing without settings. Needs manual input.");
                                    GetFlags(service).ManualSettingsNeeded = true;
                                    ServiceEvents.RaiseServiceManualSettingsNeeded(service);
                                }
                                else
                                {
                                    Utils.DebugPrint("Service initialized under no settings.");
                                }
                            }
                            else
                            {
                                Utils.DebugPrint("Loading saved settings! Initializing...");
                                if (service.Initialize(settings))
                                {
                                    Utils.DebugPrint("Successfully initialized service!");
                                }
                                else
                                {
                                    Utils.DebugPrint("Failed to initialize service. Needs manual input.");
                                    GetFlags(service).ManualSettingsNeeded = true;
                                    ServiceEvents.RaiseServiceManualSettingsNeeded(service);
                                }
                            }
                        }
                        catch (Exception ex)
                        {
                            Utils.DebugPrint("Failed: " + ex);
                            epilogue();
                            return;
                        }

                        Utils.DebugPrint("Starting service " + service.Information.ServiceName);

                        try
                        {
                            if (service.Information.UsesInternet &&
                                !Platform.HasInternetConnection())
                            {
                                throw new Exception("No internet connection. Cannot connect service: "
                                                    + service.Information.ServiceName);
                            }

                            StartInternal(service, wakeLock);
                        }
                        catch (ServiceSchedulerException ex)
                        {
                            Utils.DebugPrint("Problem in scheduler: " + ex.Message);
                            epilogue();
                            return;
                        }
                        catch (ServiceSpecialRestartException)
                        {
                            Utils.DebugPrint("Service " + service.Information.ServiceName +
                                             " is asking to be restarted on connect/authenticate. This should be called sparingly, Disa can easily " +
                                             "break under these circumstances. Restarting...");
                            StopInternal(service);
                            epilogue();
                            Start(service, smartStart, smartStartSeconds);
                            return;
                        }
                        catch (ServiceExpiredException)
                        {
                            Utils.DebugPrint("The service " + service.Information.ServiceName +
                                             " has expired. :(");
                            GetFlags(service).Aborted = true;
                            GetFlags(service).Expired = true;
                            ServiceEvents.RaiseServiceExpired(service);
                            StopInternal(service);
                            epilogue();
                            return;
                        }
                        catch (Exception ex)
                        {
                            if (smartStart)
                            {
                                StopInternal(service, false);

                                if (smartStartSeconds > 600)
                                {
                                    Utils.DebugPrint("Service " + service.Information.ServiceName +
                                                     " needs to wait over 10minutes to be restarted." +
                                                     " Killing SmartStart. The service will not be restarted. Reason: " + ex);
                                    epilogue();
                                    return;
                                }

                                Utils.DebugPrint("Service " + service.Information.ServiceName +
                                                 " failed to be started. SmartStart enabled. "
                                                 + "Service being scheduled to be re-started in T-" +
                                                 smartStartSeconds + " seconds! Reason: " + ex);

                                var hasSmartStart = new object();
                                service.HasSmartStart = hasSmartStart;

                                Platform.ScheduleAction(smartStartSeconds,
                                                        new WakeLockBalancer.ActionObject(() =>
                                {
                                    if (IsAborted(service))
                                    {
                                        Utils.DebugPrint(
                                            "Service " +
                                            service.Information
                                            .ServiceName +
                                            " tried to be started, but it deemed killed.");
                                        return;
                                    }

                                    if (service.HasSmartStart !=
                                        hasSmartStart)
                                    {
                                        Utils.DebugPrint(
                                            "This smart start has been invalidated. There " +
                                            "seems to be another one on the block.");
                                        return;
                                    }

                                    Utils.DebugPrint(
                                        "Smart start is firing the service " +
                                        service.Information
                                        .ServiceName +
                                        " up again!");

                                    StopInternal(service);
                                    Start(service, true, smartStartSeconds * 2);
                                }, WakeLockBalancer.ActionObject.ExecuteType.TaskWithWakeLock));

                                epilogue();
                                return;
                            }

                            Utils.DebugPrint("Failed to start service " + service.Information.ServiceName +
                                             " (No SmartStart) : " + ex);
                            StopInternal(service, false);
                            epilogue();
                            return;
                        }

                        BubbleManager.SendSubscribe(service, true);
                        BubbleManager.SendLastPresence(service);

                        service.ReceivingBubblesThread = new Thread(() =>
                        {
                            try
                            {
                                StartReceiveBubbles(service);
                            }
                            catch (ThreadAbortException)
                            {
                                Utils.DebugPrint(
                                    "Abort thread excepton in receiving bubbles on service (outer thread) " +
                                    service.Information.ServiceName);
                            }
                            catch (Exception ex)
                            {
                                Utils.DebugPrint(">>>>>>>>> " + ex.Message + " " + ex.StackTrace);
                            }
                            Utils.DebugPrint("Receiving bubbles for service " +
                                             service.Information.ServiceName + " has come to an end.");
                        });
                        service.ReceivingBubblesThread.Start();

                        GetFlags(service).Starting = false;

                        BubbleManager.SetNotQueuedToFailures(service);

                        Utils.Delay(1000).ContinueWith(x =>
                        {
                            BubbleGroupSync.ResetSyncsIfHasAgent(service);
                            BubbleGroupUpdater.Update(service);
                            BubbleQueueManager.Send(new[] { service.Information.ServiceName });
                            BubbleGroupManager.ProcessUpdateLastOnlineQueue(service);
                        });
                    }
                }
            }));
        }