Add periodic task to remove stale shared uploads.

mayan/apps/common/tasks.py

@@ -0,0 +1,24 @@
+from __future__ import unicode_literals
+
+from datetime import timedelta
+import logging
+
+from django.utils.timezone import now
+
+from mayan.celery import app
+from common.models import SharedUploadedFile
+
+from .literals import UPLOAD_EXPIRATION_INTERVAL
+from .models import SharedUploadedFile
+
+logger = logging.getLogger(__name__)
+
+
+@app.task(ignore_result=True)
+def task_delete_stale_uploads():
+    logger.info('Executing')
+
+    for expired_upload in SharedUploadedFile.objects.filter(datetime__lt=now() - timedelta(seconds=UPLOAD_EXPIRATION_INTERVAL)):
+        expired_upload.delete()
+
+    logger.info('Finshed')