public Worker_Chrome(string workerName, CancellationToken cancelToken)
{
this.WorkerName = workerName;
chrome = new Chrome(workerName);
t = new Thread(() =>
{
chrome.WarmUp();
HlidacStatu.Util.InfinitiveTask.Run((tag) =>
{
string swr = null;
if (Workers.UrlToProcess.TryDequeue(out swr))
{
Chrome.logger.Debug(workerName + ": dequeued " + swr);
Workers.WorkRequest wr = Workers.WorkRequest.FromString(swr);
if (wr != null)
{
//Workers.Results[swr] = Url2Png.Screenshot(chrome, wr.Url, wr.cropWidth, wr.cropHeight);
Chrome.logger.Debug(workerName + ": getting screenshot " + swr);
byte[] result = Url2PngSingle_Chrome.Screenshot(chrome, wr.Url, wr.cropWidth, wr.cropHeight);
Workers.Results.AddOrUpdate(swr, result, (k, upd) => result);
Chrome.logger.Debug(workerName + ": saved screenshot " + swr);
}
else
{
Chrome.logger.Error(workerName + ": Wrong decryption of " + swr);
}
}
return(InfinitiveTask.TaskNextRunStatus.Continue);
}, workerName, TimeSpan.FromMilliseconds(200), cancelToken); // fire every 200ms
}
);
t.Start();
}
public static async Task <byte[]> ScreenshotAsync(string url, TimeSpan timeout, int cropWidth = 1000, int cropHeight = 1000)
{
DateTime start = DateTime.Now;
DateTime end = start.Add(timeout);
byte[] result = null;
Workers.WorkRequest wr = new Workers.WorkRequest()
{
Url = url,
cropWidth = cropWidth,
cropHeight = cropHeight
};
string wrs = wr.ToString();
Workers.UrlToProcess.Enqueue(wrs);
do
{
if (Workers.Results.ContainsKey(wrs))
{
if (Workers.Results.TryRemove(wrs, out result))
{
return(result);
}
else
{
System.Threading.Thread.Sleep(5);
if (Workers.Results.TryRemove(wrs, out result))
{
return(result);
}
else
{
Chrome.logger.Warning("Cannot get result");
}
}
//break;
}
await System.Threading.Tasks.Task.Delay(200);
} while (end > DateTime.Now);
return(result);
}