64 lines
2.7 KiB
Python
64 lines
2.7 KiB
Python
"""
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WE'RE USING MIGRATIONS!
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If you make changes to this model, be sure to create an appropriate migration
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file and check it in at the same time as your model changes. To do that,
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1. Go to the edx-platform dir
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2. ./manage.py schemamigration courseware --auto description_of_your_change
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3. Add the migration file created in edx-platform/lms/djangoapps/instructor_task/migrations/
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ASSUMPTIONS: modules have unique IDs, even across different module_types
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"""
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from django.contrib.auth.models import User
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from django.db import models
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class InstructorTask(models.Model):
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"""
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Stores information about background tasks that have been submitted to
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perform work by an instructor (or course staff).
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Examples include grading and rescoring.
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`task_type` identifies the kind of task being performed, e.g. rescoring.
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`course_id` uses the course run's unique id to identify the course.
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`task_input` stores input arguments as JSON-serialized dict, for reporting purposes.
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Examples include url of problem being rescored, id of student if only one student being rescored.
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`task_key` stores relevant input arguments encoded into key value for testing to see
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if the task is already running (together with task_type and course_id).
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`task_id` stores the id used by celery for the background task.
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`task_state` stores the last known state of the celery task
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`task_output` stores the output of the celery task.
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Format is a JSON-serialized dict. Content varies by task_type and task_state.
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`requester` stores id of user who submitted the task
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`created` stores date that entry was first created
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`updated` stores date that entry was last modified
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"""
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task_type = models.CharField(max_length=50, db_index=True)
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course_id = models.CharField(max_length=255, db_index=True)
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task_key = models.CharField(max_length=255, db_index=True)
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task_input = models.CharField(max_length=255)
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task_id = models.CharField(max_length=255, db_index=True) # max_length from celery_taskmeta
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task_state = models.CharField(max_length=50, null=True, db_index=True) # max_length from celery_taskmeta
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task_output = models.CharField(max_length=1024, null=True)
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requester = models.ForeignKey(User, db_index=True)
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created = models.DateTimeField(auto_now_add=True, null=True)
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updated = models.DateTimeField(auto_now=True)
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def __repr__(self):
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return 'InstructorTask<%r>' % ({
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'task_type': self.task_type,
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'course_id': self.course_id,
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'task_input': self.task_input,
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'task_id': self.task_id,
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'task_state': self.task_state,
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'task_output': self.task_output,
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},)
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def __unicode__(self):
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return unicode(repr(self))
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