/// <summary>Performing the necessary operations when entering the automatic mode.</summary> /// <param name="url">Streaming URL.</param> /// <returns>.</returns> private static LiveVideoControlResult ProcessAutomaticMode(string url) { LogManager.WriteLog( TraceType.INFO, "Entering automatic mode", "PIS.Ground.LiveVideoControl.LiveVideoControlService.ProcessAutomaticMode", null, EventIdEnum.LiveVideoControl); LiveVideoControlResult result = new LiveVideoControlResult(); result.RequestId = Guid.Empty; result.ResultCode = LiveVideoControlErrorEnum.InternalError; // Starting a background process to send start commands to the trains that have the // desired status DelegateAutomaticModeBackgroundProcessing handler = SendStartStreamingCommandToProperStatusElements; handler.BeginInvoke(url, handler.EndInvoke, null); result.Url = url; result.ResultCode = LiveVideoControlErrorEnum.RequestAccepted; return(result); }
/// <summary>Command to select the automatic or manual starting mode for the video streaming. /// If the specified URL is empty or null, manual mode is selected. /// Otherwise, automatic mode is selected</summary> /// <param name="sessionId">Identifier for the session.</param> /// <param name="url">URL of the stream to be used in automatic mode.</param> /// <returns>Return statement of the request (Success, failed,...) with URL and request id.</returns> LiveVideoControlResult ILiveVideoControlService.ChangeCommandMode(Guid sessionId, string url) { LiveVideoControlResult result = new LiveVideoControlResult(); result.RequestId = Guid.Empty; result.ResultCode = LiveVideoControlErrorEnum.InternalError; if (_sessionManager.IsSessionValid(sessionId)) { // Checking if the specified url contains an non empty string if (string.IsNullOrEmpty(url) || url.Trim().Length == 0) { // If empty url, it means we want to clear the automatic mode if (ClearAutomaticMode()) { // Notify all clients that we are entering the manual mode LiveVideoControlService.SendNotificationToGroundApp( Guid.Empty, PIS.Ground.GroundCore.AppGround.NotificationIdEnum.LiveVideoControlManualMode, null); } result.ResultCode = LiveVideoControlErrorEnum.RequestAccepted; } else { // If non empty url, it means we want to enter the automatic mode lock (_automaticModeLock) { if (SetAutomaticMode(url)) { // Send notifications and start commands result = ProcessAutomaticMode(url); // If the command failed, restore the manual mode if (result.ResultCode != LiveVideoControlErrorEnum.RequestAccepted) { ClearAutomaticMode(); } } else { // We are already in automatic mode. Get the current url used. string currentAutomaticURL; GetAutomaticMode(out currentAutomaticURL); result.Url = currentAutomaticURL; result.ResultCode = LiveVideoControlErrorEnum.AutomaticModeActivated; } } } } else { result.ResultCode = LiveVideoControlErrorEnum.InvalidSessionId; } return(result); }
/// <summary>Command to determine the current command mode.</summary> /// <param name="sessionId">Identifier for the session.</param> /// <returns>Null if manual mode, streaming URL if automatic mode</returns> LiveVideoControlResult ILiveVideoControlService.GetCommandMode(Guid sessionId) { LiveVideoControlResult result = new LiveVideoControlResult(); result.RequestId = Guid.Empty; result.ResultCode = LiveVideoControlErrorEnum.InternalError; result.Url = null; if (_sessionManager.IsSessionValid(sessionId)) { string url; GetAutomaticMode(out url); result.Url = url; result.ResultCode = LiveVideoControlErrorEnum.RequestAccepted; } else { result.ResultCode = LiveVideoControlErrorEnum.InvalidSessionId; } return(result); }
/// <summary> /// LiveVideoControlService Web service method "StartVideoStreamingCommand" that sends a /// scheduled message to addressee. /// </summary> /// <param name="sessionId">The session identifier.</param> /// <param name="targetAddress">Addressee information.</param> /// <param name="url">The request timeout.</param> /// <returns>Response <see cref="LiveVideoControlResult"/>.</returns> LiveVideoControlResult ILiveVideoControlService.StartVideoStreamingCommand( Guid sessionId, TargetAddressType targetAddress, string url) { LiveVideoControlResult result = new LiveVideoControlResult(); result.RequestId = Guid.Empty; result.ResultCode = LiveVideoControlErrorEnum.RequestAccepted; string automaticModeURL; if (_sessionManager.IsSessionValid(sessionId)) { if (GetAutomaticMode(out automaticModeURL) == false) { _dicVideoHistory[targetAddress] = url; _dicVideoHistorySentService[targetAddress] = null; result = SendStartStreamingCommand( sessionId, targetAddress, url ); } else { result.Url = automaticModeURL; result.ResultCode = LiveVideoControlErrorEnum.AutomaticModeActivated; } } else { result.ResultCode = LiveVideoControlErrorEnum.InvalidSessionId; } return(result); }
/// <summary> /// LiveVideoControlService Web service method "StopVideoStreamingCommand" that cancels all /// predefined and free-text messages at addressee. /// </summary> /// <param name="sessionId">The session identifier.</param> /// <param name="targetAddress">Addressee information.</param> /// <returns>Response <see cref="LiveVideoControlResult"/>.</returns> LiveVideoControlResult ILiveVideoControlService.StopVideoStreamingCommand( Guid sessionId, TargetAddressType targetAddress) { LiveVideoControlResult result = new LiveVideoControlResult(); result.RequestId = Guid.Empty; result.ResultCode = LiveVideoControlErrorEnum.RequestAccepted; _dicVideoHistory.Remove(targetAddress); _dicVideoHistorySentService.Remove(targetAddress); if (_sessionManager.IsSessionValid(sessionId)) { string automaticModeURL; if (GetAutomaticMode(out automaticModeURL) == false) { Guid requestId = Guid.Empty; string error = _sessionManager.GenerateRequestID(sessionId, out requestId); if (requestId != Guid.Empty) { ElementList <AvailableElementData> elements; T2GManagerErrorEnum rqstResult = _t2gManager.GetAvailableElementDataByTargetAddress(targetAddress, out elements); switch (rqstResult) { case T2GManagerErrorEnum.eSuccess: { List <RequestContext> newRequests = new List <RequestContext>(); foreach (AvailableElementData element in elements) { LiveVideoControlService.SendNotificationToGroundApp(requestId, PIS.Ground.GroundCore.AppGround.NotificationIdEnum.LiveVideoControlDistributionProcessing, element.ElementNumber); ProcessStopVideoStreamingCommandRequestContext request = new ProcessStopVideoStreamingCommandRequestContext( element.ElementNumber, requestId, sessionId); newRequests.Add(request); } _requestProcessor.AddRequestRange(newRequests); result.RequestId = requestId; result.ResultCode = LiveVideoControlErrorEnum.RequestAccepted; } break; case T2GManagerErrorEnum.eT2GServerOffline: result.ResultCode = LiveVideoControlErrorEnum.T2GServerOffline; break; case T2GManagerErrorEnum.eElementNotFound: result.ResultCode = LiveVideoControlService.GetInvalidTargetAddressResponse(targetAddress); break; default: break; } } else { LogManager.WriteLog(TraceType.ERROR, error, "PIS.Ground.LiveVideoControl.LiveVideoControlService.StopVideoStreamingCommand", null, EventIdEnum.LiveVideoControl); result.ResultCode = LiveVideoControlErrorEnum.InvalidRequestID; } } else { result.Url = automaticModeURL; result.ResultCode = LiveVideoControlErrorEnum.AutomaticModeActivated; } } else { result.ResultCode = LiveVideoControlErrorEnum.InvalidSessionId; } return(result); }
/// <summary>Sends a start streaming command.</summary> /// <param name="sessionId">The session identifier.</param> /// <param name="targetAddress">Addressee information.</param> /// <param name="url">The streaming URL to be used.</param> /// <returns>Response <see cref="LiveVideoControlElementListResult"/>.</returns> private static LiveVideoControlResult SendStartStreamingCommand( Guid sessionId, TargetAddressType targetAddress, string url) { LiveVideoControlResult result = new LiveVideoControlResult(); result.RequestId = Guid.Empty; result.ResultCode = LiveVideoControlErrorEnum.InternalError; Guid requestId = Guid.Empty; string error; if (sessionId != Guid.Empty) { error = _sessionManager.GenerateRequestID(sessionId, out requestId); } else { error = _sessionManager.GenerateRequestID(out requestId); } if (requestId != Guid.Empty) { ElementList <AvailableElementData> elements; T2GManagerErrorEnum rqstResult = _t2gManager.GetAvailableElementDataByTargetAddress(targetAddress, out elements); switch (rqstResult) { case T2GManagerErrorEnum.eSuccess: Guid notificationRequestId = requestId; List <RequestContext> newRequests = new List <RequestContext>(); foreach (AvailableElementData element in elements) { if (_dicVideoHistorySentService.ContainsKey(targetAddress)) { ServiceInfo availableService; if (_t2gManager.GetAvailableServiceData(element.ElementNumber, (int)eServiceID.eSrvSIF_LiveVideoControlServer, out availableService) == T2GManagerErrorEnum.eSuccess) { _dicVideoHistorySentService[targetAddress] = availableService; } } LiveVideoControlService.SendNotificationToGroundApp(requestId, PIS.Ground.GroundCore.AppGround.NotificationIdEnum.LiveVideoControlDistributionProcessing, element.ElementNumber); ProcessStartVideoStreamingCommandRequestContext request = new ProcessStartVideoStreamingCommandRequestContext( element.ElementNumber, requestId, sessionId, url); newRequests.Add(request); } _requestProcessor.AddRequestRange(newRequests); result.RequestId = requestId; result.ResultCode = LiveVideoControlErrorEnum.RequestAccepted; break; case T2GManagerErrorEnum.eT2GServerOffline: LogManager.WriteLog(TraceType.ERROR, "T2G Offline", "PIS.Ground.LiveVideoControl.LiveVideoControlService.SendStartStreamingCommand", null, EventIdEnum.LiveVideoControl); result.ResultCode = LiveVideoControlErrorEnum.T2GServerOffline; break; case T2GManagerErrorEnum.eElementNotFound: LogManager.WriteLog(TraceType.ERROR, "Element not found", "PIS.Ground.LiveVideoControl.LiveVideoControlService.SendStartStreamingCommand", null, EventIdEnum.LiveVideoControl); result.ResultCode = LiveVideoControlService.GetInvalidTargetAddressResponse(targetAddress); break; default: LogManager.WriteLog(TraceType.ERROR, "Problem looking for an element. T2GClient returned: " + rqstResult.ToString(), "PIS.Ground.LiveVideoControl.LiveVideoControlService.SendStartStreamingCommand", null, EventIdEnum.LiveVideoControl); result.ResultCode = LiveVideoControlErrorEnum.InternalError; break; } } else { LogManager.WriteLog(TraceType.ERROR, error, "PIS.Ground.LiveVideoControl.LiveVideoControlService.SendStartStreamingCommand", null, EventIdEnum.LiveVideoControl); result.ResultCode = LiveVideoControlErrorEnum.InvalidRequestID; } return(result); }
/// <summary> /// Callback called when Element Online state changes (signaled by the T2G Client). /// </summary> /// <param name="sender">Source of the event.</param> /// <param name="args">Event information to send to registered event handlers.</param> public static void OnElementInfoChanged(object sender, ElementEventArgs args) { if (args != null && args.SystemInformation != null && args.SystemInformation.IsOnline == true && args.SystemInformation.PisMission != null && args.SystemInformation.PisMission.MissionState == MissionStateEnum.MI) { // Will be called multiple times for the same train. // Some sort of debouncing will be welcome in a future revision // to prevent multiple notifications to the console(s) if (string.IsNullOrEmpty(args.SystemInformation.SystemId) == false) { TargetAddressType target = new TargetAddressType(); target.Type = AddressTypeEnum.Element; target.Id = args.SystemInformation.SystemId; string automaticModeUrl; if (GetAutomaticMode(out automaticModeUrl) == true) { LogManager.WriteLog( TraceType.INFO, "Automatically starting streaming on newly detected train: " + args.SystemInformation.SystemId, "PIS.Ground.LiveVideoControl.LiveVideoControlService.OnElementInfoChanged", null, EventIdEnum.LiveVideoControl); LiveVideoControlResult result = SendStartStreamingCommand(Guid.Empty, target, automaticModeUrl); if (result.ResultCode != LiveVideoControlErrorEnum.RequestAccepted) { LogManager.WriteLog(TraceType.ERROR, "Problem sending a start command with url " + automaticModeUrl + " to train " + target.Id + ". Error: " + result.ResultCode.ToString(), "PIS.Ground.LiveVideoControl.LiveVideoControlService.OnElementInfoChanged", null, EventIdEnum.LiveVideoControl); } } else { // Manual Mode, resend the latest Start command if available ServiceInfo lastSentService; if (_dicVideoHistory.ContainsKey(target) && _dicVideoHistorySentService.TryGetValue(target, out lastSentService)) { ServiceInfo foundService = (args.SystemInformation.ServiceList != null) ? args.SystemInformation.ServiceList.FirstOrDefault(s => s.ServiceId == (ushort)eServiceID.eSrvSIF_LiveVideoControlServer && s.IsAvailable): null; bool lServiceLiveVideoControlServerAvailable = foundService != null; // If service is not available, force the sent status to value false. if (!lServiceLiveVideoControlServerAvailable && lastSentService != null) { _dicVideoHistorySentService[target] = null; } // Avoiding sending multiple start notifications. // The LiveVideoService have to be online if (lServiceLiveVideoControlServerAvailable == true && (lastSentService == null || !foundService.Equals(lastSentService))) { LogManager.WriteLog( TraceType.INFO, "Re-starting streaming on newly detected train: " + args.SystemInformation.SystemId, "PIS.Ground.LiveVideoControl.LiveVideoControlService.OnElementInfoChanged", null, EventIdEnum.LiveVideoControl); LiveVideoControlResult result = SendStartStreamingCommand(Guid.Empty, target, _dicVideoHistory[target]); // Setting the flag that the start command was already sent _dicVideoHistorySentService[target] = foundService; if (result.ResultCode != LiveVideoControlErrorEnum.RequestAccepted) { LogManager.WriteLog(TraceType.ERROR, "Problem sending a start command with url " + _dicVideoHistory[target] + " to train " + target.Id + ". Error: " + result.ResultCode.ToString(), "PIS.Ground.LiveVideoControl.LiveVideoControlService.OnElementInfoChanged", null, EventIdEnum.LiveVideoControl); } } } } } } }