private static void DoWork(object data)
{
CrawlerThread crawler = (CrawlerThread)data;
Downloader downloader = crawler.m_downloader;
IQueueManager queue = downloader.UrlsQueueFrontier;
while (true)
{
crawler.m_suspendEvent.WaitOne(Timeout.Infinite);
if (queue.Count > 0)
{
try
{
// 从队列中获取URL
string url = (string)queue.Dequeue();
// 获取页面
Fetch(crawler, url);
// TODO: 检测是否完成
//if (false) break;
}
catch (InvalidOperationException)
{
SleepWhenQueueIsEmpty(crawler);
}
}
else
{
SleepWhenQueueIsEmpty(crawler);
}
}
}
public CommandResult Process()
{
if (_rovers.Any(x => x.State.Status == Status.Moving))
{
return new CommandResult {
ErrorMessage = "A rover is moving"
}
}
;
var queue = _queueManager.Dequeue();
if (queue == null)
{
return(null);
}
var result = !_rovers.Any(x => x.Name == queue.RoverName)
? new CommandResult {
ErrorMessage = $"No rover connected called as {queue.RoverName}"
}
: _rovers.First(x => x.Name == queue.RoverName).ApplyCommands(queue.Commands);
if (result.Rover.State.Status == Status.Died)
{
DangerZoneDbRepo.Instance.Value.Add(result.Rover.State.X, result.Rover.State.Y);
result.ErrorMessage = $"RIP {result.Rover.Name}";
}
return(result);
}
}
public virtual void Launch(object evnt)
{
try
{
_threadNumber = ++_threadCount;
ManualResetEvent doneEvent = (ManualResetEvent)evnt;
while (true && !_cancelled)
{
doneEvent.WaitOne();
ByteBlock _block = _queueReader.Dequeue();
if (_block == null)
{
doneEvent.Set();
return;
}
using (MemoryStream _memoryStream = new MemoryStream())
{
using (GZipStream cs = new GZipStream(_memoryStream, CompressionMode.Compress))
{
cs.Write(_block.Buffer, 0, _block.Buffer.Length);
}
byte[] compressedData = _memoryStream.ToArray();
ByteBlock _out = new ByteBlock(_block.ID, compressedData);
_queueWriter.EnqueueForWriting(_out);
}
}
}
catch (Exception ex)
{
Console.WriteLine("Ошибка в потоке {0}. \n Описание ошибки: {1}", _threadNumber, ex.Message);
_cancelled = true;
}
}
public void PlayNextTrack()
{
logger.Debug("Dequeuing next track");
var nextToPlay = queueManager.Dequeue();
if (nextToPlay == null)
{
logger.Debug("Asking AutoPlay for next track");
nextToPlay = autoplayer.FindTrack();
if (nextToPlay != null)
{
logger.Debug("Track {0} found by autoplay", nextToPlay.ToLoggerFriendlyTrackName());
}
}
callbackClient.QueueChanged(queueManager.GetAll());
if (nextToPlay != null)
{
musicPlayer.PlayTrack(nextToPlay);
}
}