private ReportGenerationQueue GetQueueItem(GenerationDao dao, int reportGenerationQueueId)
{
return QueueHelper.GetQueueItem(reportGenerationQueueId);
}
/// <summary>
/// Starts the generation process.
/// </summary>
/// <param name="generationDao">The generation DAO.</param>
/// <param name="queuedReport">The queued report.</param>
private void StartGenerationProcess(GenerationDao generationDao, ReportGenerationQueue queuedReport)
{
this.ReportQueueStatusService.UpdateReportGenerationQueue(new ReportGenerationQueueStatusDto()
{
ReportGenerationQueueId = queuedReport.ReportGenerationQueueId,
ReportStatus = ReportStatus.Processing
});
IHostedProcess hostedApp = this.LaunchProcess(queuedReport.ReportGenerationQueueId);
this._reportGeneratorEngineList.Add(hostedApp);
}
/// <summary>
/// Requeues the orphaned processing items.
/// If any ReportStatusId == 2 and the ReportGenerationQueueId is not in the list
/// of threads that is executing the reports anymore, then 'RESET' the item, for regeneration
/// increase the retry count
/// </summary>
/// <param name="generationDao">The generation DAO.</param>
private void RequeueOrphanedProcessingItems(GenerationDao generationDao)
{
List<ReportGenerationQueue> processingReportList = generationDao.FindAll<ReportGenerationQueue>(queue =>
queue.ReportGenerationStatus == ReportStatus.Processing).ToList();
if (processingReportList != null && processingReportList.Count > 0)
{
foreach (ReportGenerationQueue item in processingReportList)
{
IHostedProcess runningApplication = this._reportGeneratorEngineList.FirstOrDefault(
entity => entity.ReportGenerationQueueId == item.ReportGenerationQueueId);
if (runningApplication == null)
{
// this item in set to running in DB, but is not in current executing threads anymore
// hence this might be a report that generated a fatal exception, that can be recovered & rescheduled
this.ReportQueueStatusService.UpdateReportGenerationQueue(new ReportGenerationQueueStatusDto()
{
ReportGenerationQueueId = item.ReportGenerationQueueId,
NumberOfRetries = item.NumberOfRetries + 1,
ReportStatus = ReportStatus.Queued
});
}
}
}
}
/// <summary>
/// Pulls the next report.
/// </summary>
/// <param name="generationDao">The generation DAO.</param>
/// <returns></returns>
private ReportGenerationQueue PullNextReport(GenerationDao generationDao)
{
List<ReportGenerationQueue> scheduledReportList = generationDao
.FindAll<ReportGenerationQueue>(queue =>
queue.ReportGenerationStatus == ReportStatus.Queued)
.OrderBy(entity => entity.ReportGenerationQueueId)
.ToList();
scheduledReportList = this.FilterQueueForUser(scheduledReportList);
ReportGenerationQueue queuedReport = scheduledReportList.FirstOrDefault();
return queuedReport;
}
/// <summary>
/// Checks the remove completed process.
/// </summary>
/// <param name="generationDao">The generation DAO.</param>
/// <param name="process">The process.</param>
private void CheckRemoveCompletedProcess(GenerationDao generationDao, IHostedProcess process)
{
ReportGenerationQueue processingReport = generationDao.Find<ReportGenerationQueue>(queue =>
queue.ReportGenerationQueueId == process.ReportGenerationQueueId);
if (processingReport != null)
{
// If the process is completed, cancelled or failed, remove it from the queue
if (processingReport.ReportGenerationStatus.In(ReportStatus.Completed, ReportStatus.Cancelled, ReportStatus.Failed))
{
if (processingReport.ReportGenerationStatus == ReportStatus.Cancelled)
{
this.TerminateProcess(process);
}
this._reportGeneratorEngineList.Remove(process);
}
else
{
if (process.HasExited)
{
this._reportGeneratorEngineList.Remove(process);
}
}
}
}
public ReportGenerationQueueBuilder WithGenerationDao(GenerationDao dao)
{
this._generationDao = dao;
return this;
}