/// <summary>
/// Start any pending jobs as soon as we have capacity.
/// </summary>
private void ProcessWaitingJobs()
{
Job pendingJob = null;
if (CanProcessJob())
{
lock (lockObject)
{
if (CanProcessJob())
{
PendingJobQueue.TryDequeue(out pendingJob);
pendingJob.Status = JobStatus.Running;
JobRepository.Save(pendingJob);
RunningJobs.TryAdd(pendingJob, Scraper.ScrapeAsync(pendingJob.Url, pendingJob.Selectors));
}
}
}
}
private bool CanProcessJob()
{
return(PendingJobQueue.Any() && RunningJobs.Count < MaxScrapers);
}
/// <summary>
/// Queue up a job for processing.
/// </summary>
public void QueueJob(Job job)
{
job.Status = JobStatus.Pending;
JobRepository.Save(job);
PendingJobQueue.Enqueue(job);
}