protected override async Task ExecuteAsync(CancellationToken cancelToken)
{
try
{
while (!cancelToken.IsCancellationRequested)
{
try
{
Func <CancellationToken, Task <KonluluStreamGrabStateObject> > workItem = await taskQueue.DequeueAsync(cancelToken);
KonluluStreamGrabStateObject stateObj = await workItem(cancelToken);
{
switch (stateObj.State)
{
case KonluluStreamGrabState.GetUpcomingStream:
{
YouTubeService ytService = ytInterface.GetYoutubeService();
string livestreamId = await ytInterface.GetLiveStream(ytService, "Upcoming");
bool foundLivestream = livestreamId != null;
if (livestreamId == null)
{
logger.LogInformation("found no upcoming stream");
if (stateObj.IsStartup)
{
livestreamId = await ytInterface.GetLiveStream(ytService, "Live");
foundLivestream = livestreamId != null;
if (livestreamId == null)
{
logger.LogInformation("found no live stream");
}
}
}
if (!foundLivestream)
{
taskQueue.QueueBackgroundWorkItem((c) =>
StateTimer(c, new KonluluStreamGrabStateObject(
KonluluStreamGrabState.GetUpcomingStream,
DateTime.UtcNow,
DateTime.UtcNow.AddHours(1))
)
);
}
else
{
logger.LogInformation($"found upcoming stream {livestreamId}");
VideoDto video = await ytInterface.GetVideoInfo(ytService, livestreamId, getScheduledTime : true);
if (video == null)
{
taskQueue.QueueBackgroundWorkItem((c) =>
StateTimer(c, new KonluluStreamGrabStateObject(
KonluluStreamGrabState.GetUpcomingStream,
DateTime.UtcNow,
DateTime.UtcNow.AddMinutes(20))
{
VideoId = stateObj.VideoId
}
)
);
}
else
{
taskQueue.QueueBackgroundWorkItem((c) =>
StateTimer(c, new KonluluStreamGrabStateObject(
KonluluStreamGrabState.WaitForTheUpcomingStream,
DateTime.UtcNow,
video.StartTime)
{
VideoId = livestreamId
}
)
);
}
}
break;
}
case KonluluStreamGrabState.WaitForTheUpcomingStream:
{
taskQueue.QueueBackgroundWorkItem((c) =>
StateTimer(c, new KonluluStreamGrabStateObject(
KonluluStreamGrabState.WaitForActualStartOfStream,
DateTime.UtcNow,
DateTime.UtcNow.AddSeconds(1))
{
VideoId = stateObj.VideoId
}
)
);
break;
}
case KonluluStreamGrabState.WaitForActualStartOfStream:
{
YouTubeService ytService = ytInterface.GetYoutubeService();
VideoDto video = null;
try
{
video = await ytInterface.GetVideoInfo(ytService, stateObj.VideoId);
if (video == null)
{
taskQueue.QueueBackgroundWorkItem((c) =>
StateTimer(c, new KonluluStreamGrabStateObject(
KonluluStreamGrabState.GetUpcomingStream,
DateTime.UtcNow,
DateTime.UtcNow.AddMinutes(20))
{
VideoId = stateObj.VideoId
}
)
);
}
}
catch (StartCapturingTooSoonException)
{
taskQueue.QueueBackgroundWorkItem((c) =>
StateTimer(c, new KonluluStreamGrabStateObject(
KonluluStreamGrabState.WaitForActualStartOfStream,
DateTime.UtcNow,
DateTime.UtcNow.AddMinutes(2))
{
VideoId = stateObj.VideoId
}
)
);
break;
}
catch (Exception ex)
{
logger.LogError(ex, nameof(KonluluStreamGrabState.WaitForActualStartOfStream));
break;
}
using (IServiceScope scope = serviceScopeFactory.CreateScope())
{
IVideoRepository videoDb = scope.ServiceProvider.GetRequiredService <IVideoRepository>();
ITagService tagService = scope.ServiceProvider.GetRequiredService <ITagService>();
videoDb.Save(new Video(video));
logger.LogInformation("captured {0}", video.VideoId);
await tagService.StartTag(video.VideoId);
}
taskQueue.QueueBackgroundWorkItem((c) =>
StateTimer(c, new KonluluStreamGrabStateObject(
KonluluStreamGrabState.WaitForEndOfStream,
DateTime.UtcNow,
DateTime.UtcNow.AddSeconds(1))
{
VideoId = stateObj.VideoId
}
)
);
break;
}
case KonluluStreamGrabState.WaitForEndOfStream:
{
YouTubeService ytService = ytInterface.GetYoutubeService();
VideoDto video = null;
try
{
video = await ytInterface.GetVideoInfo(ytService, stateObj.VideoId, getActualEndTime : true);
if (video == null)
{
taskQueue.QueueBackgroundWorkItem((c) =>
StateTimer(c, new KonluluStreamGrabStateObject(
KonluluStreamGrabState.GetUpcomingStream,
DateTime.UtcNow,
DateTime.UtcNow.AddMinutes(20))
{
VideoId = stateObj.VideoId
}
)
);
}
}
catch (NoActualEndtimeException)
{
taskQueue.QueueBackgroundWorkItem((c) =>
StateTimer(c, new KonluluStreamGrabStateObject(
KonluluStreamGrabState.WaitForEndOfStream,
DateTime.UtcNow,
DateTime.UtcNow.AddMinutes(15))
{
VideoId = stateObj.VideoId
}
)
);
break;
}
catch (Exception ex)
{
logger.LogError(ex, nameof(KonluluStreamGrabState.WaitForActualStartOfStream));
break;
}
using (IServiceScope scope = serviceScopeFactory.CreateScope())
{
IVideoRepository videoDb = scope.ServiceProvider.GetRequiredService <IVideoRepository>();
videoDb.Save(new Video(video));
logger.LogInformation("captured the end of {0}", video.VideoId);
}
taskQueue.QueueBackgroundWorkItem((c) =>
StateTimer(c, new KonluluStreamGrabStateObject(
KonluluStreamGrabState.GetUpcomingStream,
DateTime.UtcNow,
DateTime.UtcNow.AddSeconds(1))
{
VideoId = stateObj.VideoId
}
)
);
break;
}
default:
logger.LogError("you shouldnt be here");
break;
}
}
}
catch (Exception ex)
{
StringBuilder sb = new StringBuilder();
sb.AppendLine(ex.Message);
sb.AppendLine(ex.StackTrace);
logger.LogError(sb.ToString());
}
}
}
catch (Exception ex)
{
StringBuilder sb = new StringBuilder();
sb.AppendLine("Exception when loading command modules");
sb.AppendLine(ex.Message);
sb.AppendLine(ex.StackTrace);
logger.LogError(sb.ToString());
}
}
private static Task <KonluluStreamGrabStateObject> StateTimer(CancellationToken cancellationToken, KonluluStreamGrabStateObject stateobj)
{
int time = (int)(stateobj.StateWaitUntil - DateTime.UtcNow).TotalMilliseconds;
if (time < 0)
{
time = 0;
}
return(Task.Delay(time).ContinueWith((c) =>
{
return stateobj;
}));
}
