protected async Task ExecuteAsync(CancellationToken stoppingToken)
{
await Task.Yield(); // required so that this method does not block startup
try
{
while (!stoppingToken.IsCancellationRequested)
{
using (var scope = _serviceScopeFactory.CreateScope())
{
// get name of job
string jobType = Utilities.GetFullTypeName(GetType().AssemblyQualifiedName);
// load jobs and find current job
IJobRepository jobs = scope.ServiceProvider.GetRequiredService <IJobRepository>();
Job job = jobs.GetJobs().Where(item => item.JobType == jobType).FirstOrDefault();
if (job != null && job.IsEnabled && !job.IsExecuting)
{
// get next execution date
DateTime NextExecution;
if (job.NextExecution == null)
{
if (job.StartDate != null)
{
NextExecution = job.StartDate.Value;
}
else
{
NextExecution = DateTime.UtcNow;
}
}
else
{
NextExecution = job.NextExecution.Value;
}
// determine if the job should be run
if (NextExecution <= DateTime.UtcNow && (job.EndDate == null || job.EndDate >= DateTime.UtcNow))
{
IJobLogRepository jobLogs = scope.ServiceProvider.GetRequiredService <IJobLogRepository>();
// create a job log entry
JobLog log = new JobLog();
log.JobId = job.JobId;
log.StartDate = DateTime.UtcNow;
log.FinishDate = null;
log.Succeeded = false;
log.Notes = "";
log = jobLogs.AddJobLog(log);
// update the job to indicate it is running
job.IsExecuting = true;
jobs.UpdateJob(job);
// execute the job
try
{
log.Notes = ExecuteJob(scope.ServiceProvider);
log.Succeeded = true;
}
catch (Exception ex)
{
log.Notes = ex.Message;
log.Succeeded = false;
}
// update the job log
log.FinishDate = DateTime.UtcNow;
jobLogs.UpdateJobLog(log);
// update the job
job.NextExecution = CalculateNextExecution(NextExecution, job.Frequency, job.Interval);
job.IsExecuting = false;
jobs.UpdateJob(job);
// trim the job log
List <JobLog> logs = jobLogs.GetJobLogs().Where(item => item.JobId == job.JobId)
.OrderByDescending(item => item.JobLogId).ToList();
for (int i = logs.Count; i > job.RetentionHistory; i--)
{
jobLogs.DeleteJobLog(logs[i - 1].JobLogId);
}
}
}
}
// wait 1 minute
await Task.Delay(TimeSpan.FromMinutes(1), stoppingToken);
}
}
catch
{
// can occur during the initial installation as there is no DBContext
}
}
public void Delete(int id)
{
_jobLogs.DeleteJobLog(id);
_logger.Log(LogLevel.Information, this, LogFunction.Delete, "Job Log Deleted {JobLogId}", id);
}