public override void Run()
{
while (true)
{
// connect to the database
DatabaseDataContext db = new DatabaseDataContext();
// fetch all scheduled jobs that are overdue and enabled
foreach (Schedule s in db.Schedules.Where(z => z.NextOccurrence <= DateTime.UtcNow &&
z.IsEnabled == true))
{
// execute job
Job job = new Job(s);
Thread jobThread = new Thread(new ThreadStart(job.Execute));
jobThread.Start();
// schedule next occurrence
CrontabSchedule schedule = CrontabSchedule.Parse(s.Occurrence);
DateTime nextOccurrence = schedule.GetNextOccurrence(DateTime.UtcNow); // calculate new next occurrence
s.NextOccurrence = nextOccurrence;
db.SubmitChanges();
}
// close connection
db.Dispose();
// sleep for fifteen seconds
Thread.Sleep(15000);
}
}
public void Add(Job job)
{
job.Parent = this;
Jobs.Add(job);
}