def _get_task_meta_for(self, task_id):
"""Get task metadata for a task by id."""
session = Session()
try:
task = None
for task in session.query(Task).filter(Task.task_id == task_id):
break
if not task:
task = Task(task_id)
session.add(task)
session.commit()
if task:
return task.to_dict()
finally:
session.close()
def _store_result(self, task_id, result, status, traceback=None):
"""Store return value and statu of an executed task."""
session = Session()
try:
tasks = session.query(Task).filter(Task.task_id == task_id).all()
if not tasks:
task = Task(task_id)
session.add(task)
else:
task = tasks[0]
task.result = result
task.status = status
task.traceback = traceback
if task.status == states.STARTED:
task.date_began = datetime.now()
session.commit()
finally:
session.close()
return result