/// <summary>
///
/// </summary>
/// <param name="work">work的创建和销毁由外界处理</param>
/// <param name="run"></param>
/// <returns></returns>
public void AddWork(IWork work, bool run = false)
{
if (work != null && !allWorks.Contains(work))
{
allWorks.Add(work);
if (run)
{
if (runningCount < runningWorks.Count)
{
runningWorks[runningCount++] = work;
}
else
{
runningWorks.Add(work);
runningCount++;
}
work.Start();
(work as ITick).Tick(0); //有些需要立即生效
if (work.IsFinished())
{
allWorks.Remove(work);
runningWorks.Remove(work);
runningCount--;
}
}
}
}
public void AddStartRightAwayWork(IWork work)
{
if (work != null && !allWorks.Contains(work))
{
AddWork(work);
work.Start();
TickOnEditorMode();
}
}
protected override void DoTick(float deltaTime)
{
if (!conditionSatisfied)
{
conditionSatisfied = condition();
if (conditionSatisfied && then != null)
{
then.Start();
}
}
if (conditionSatisfied && then != null)
{
then.Tick(deltaTime);
}
}
/// <summary>
/// Starts dedicated crawler's thread which countinously takes and executes work.
/// </summary>
/// <param name="workSource">Crawler worksource</param>
public void StartCrawling(WorkSource workSource)
{
if (thread == null)
{
thread = new Thread(new ThreadStart(() =>
{
while (!shouldStop)
{
try
{
log.Debug("Getting available work...");
work = workSource.GetAvailableWork();
if (work != null)
{
log.DebugFormat("Executing work [{0}]", work);
work.Start();
log.InfoFormat("Work finished successfully. [{0}]", work);
workSource.ReturnFinishedWork(work);
log.DebugFormat("Work returned to the source. [{0}]", work);
}
}
catch (Exception ex)
{
log.ErrorException("Exception occured while executing a work. You should take care for all exceptions while you implement 'ICrawlerJob.Start()' method.", ex);
}
}
log.Info("Crowler was stopped.");
}));
thread.Name = name;
thread.Start();
}
else
{
log.FatalFormat("Crawler '{0}' is already running on another source.", name);
throw new InvalidOperationException(String.Format("Crawler '{0}' is already running on another source.", name));
}
}