public static (Guid JobId, DateTime StartTime, Task Task) StartNewJob(BaseJob job)
{
var dbJob = new Job {
Id = Guid.NewGuid(), StartTime = DateTime.UtcNow, RelatedEntity = job.RelatedEntityId, Description = job.Description, Status = JobStatus.Running
};
using (var ctx = new DataContext())
{
ctx.Jobs.Add(dbJob);
ctx.SaveChanges();
ctx.Entry(dbJob).State = EntityState.Detached;
}
if (!_activeJobs.TryGetValue(dbJob.RelatedEntity, out var jobList))
{
_activeJobs.Add(dbJob.RelatedEntity, new List <Job>());
}
_activeJobs[dbJob.RelatedEntity].Add(dbJob);
Task task = null;
bool taskSetup = false;
_ = Task.Run(async() =>
{
using (var ctx = new DataContext())
{
ctx.Jobs.Attach(dbJob);
job.ReportError = async x => await SaveError(x, dbJob, ctx);
taskSetup = true;
task = job.JobTask();
while (!task.IsCompleted)
{
dbJob.Heartbeat = DateTime.UtcNow;
await ctx.SaveChangesAsync();
await Task.Delay(1000);
}
if (task.IsFaulted)
{
await SaveError(task.Exception.GetBaseException().Message, dbJob, ctx);
dbJob.Status = JobStatus.Error;
}
else if (dbJob.Errors != null)
{
dbJob.Status = JobStatus.FinishedWithErrors;
}
else
{
dbJob.Status = JobStatus.Finished;
}
await ctx.SaveChangesAsync();
_activeJobs[dbJob.RelatedEntity].Remove(dbJob);
if (!_activeJobs[dbJob.RelatedEntity].Any())
{
_activeJobs.Remove(dbJob.RelatedEntity);
}
}
});
while (!taskSetup)
{
Task.Delay(10).GetAwaiter().GetResult();
}
return(dbJob.Id, dbJob.StartTime, task);
}
