[scheduler] Fix missing job progress on job completion

This change adds a check for job progress before generating
the resuming arguments. If progress is not available, it
defaults to the initial arguments, as the resuming arguments
can't be obtained from the job result.

Signed-off-by: Jose Javier Merchante <[email protected]>

Author: jjmerchante

src/grimoirelab/core/scheduler/tasks/models.py

@@ -131,8 +131,11 @@ def prepare_job_parameters(self):
             job_args = args_gen.initial_args(self.task_args)
         elif self.status == SchedulerStatus.COMPLETED:
             job = self.jobs.all().order_by('-job_num').first()
-            progress = ChroniclerProgress.from_dict(job.progress)
-            job_args = args_gen.resuming_args(job.job_args['job_args'], progress)
+            if job and job.progress:
+                progress = ChroniclerProgress.from_dict(job.progress)
+                job_args = args_gen.resuming_args(job.job_args['job_args'], progress)
+            else:
+                job_args = args_gen.initial_args(self.task_args)
         elif self.status == SchedulerStatus.RECOVERY:
             job = self.jobs.all().order_by('-job_num').first()
             if job and job.progress: