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82 lines
3.6 KiB
Python
82 lines
3.6 KiB
Python
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from datetime import timedelta
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from django.db import connection, transaction
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from django.utils.timezone import now as timezone_now
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from zerver.models import Realm, Message, UserMessage, ArchivedMessage, ArchivedUserMessage, \
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Attachment, ArchivedAttachment
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from typing import Any, Dict, Optional, Generator, List
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def get_realm_expired_messages(realm: Any) -> Optional[Dict[str, Any]]:
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expired_date = timezone_now() - timedelta(days=realm.message_retention_days)
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expired_messages = Message.objects.order_by('id').filter(sender__realm=realm,
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pub_date__lt=expired_date)
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if not expired_messages.exists():
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return None
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return {'realm_id': realm.id, 'expired_messages': expired_messages}
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def get_expired_messages() -> Generator[Any, None, None]:
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# Get all expired messages by Realm.
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realms = Realm.objects.order_by('string_id').filter(
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deactivated=False, message_retention_days__isnull=False)
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for realm in realms:
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realm_expired_messages = get_realm_expired_messages(realm)
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if realm_expired_messages:
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yield realm_expired_messages
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def move_attachment_message_to_archive_by_message(message_ids: List[int]) -> None:
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# Move attachments messages relation table data to archive.
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id_list = ', '.join(str(message_id) for message_id in message_ids)
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query = """
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INSERT INTO zerver_archivedattachment_messages (id, archivedattachment_id,
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archivedmessage_id)
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SELECT zerver_attachment_messages.id, zerver_attachment_messages.attachment_id,
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zerver_attachment_messages.message_id
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FROM zerver_attachment_messages
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LEFT JOIN zerver_archivedattachment_messages
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ON zerver_archivedattachment_messages.id = zerver_attachment_messages.id
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WHERE zerver_attachment_messages.message_id in ({message_ids})
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AND zerver_archivedattachment_messages.id IS NULL
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"""
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with connection.cursor() as cursor:
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cursor.execute(query.format(message_ids=id_list))
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@transaction.atomic
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def move_messages_to_archive(message_ids: List[int]) -> None:
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messages = list(Message.objects.filter(id__in=message_ids).values())
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if not messages:
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raise Message.DoesNotExist
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arc_messages = []
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for message in messages:
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arc_message = ArchivedMessage(**message)
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arc_messages.append(arc_message)
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ArchivedMessage.objects.bulk_create(arc_messages)
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# Move user_messages to the archive.
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user_messages = UserMessage.objects.filter(
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message_id__in=message_ids).exclude(id__in=ArchivedUserMessage.objects.all())
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archiving_messages = []
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for user_message in user_messages.values():
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archiving_messages.append(ArchivedUserMessage(**user_message))
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ArchivedUserMessage.objects.bulk_create(archiving_messages)
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# Move attachments to archive
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attachments = Attachment.objects.filter(messages__id__in=message_ids).exclude(
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id__in=ArchivedAttachment.objects.all()).distinct()
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archiving_attachments = []
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for attachment in attachments.values():
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archiving_attachments.append(ArchivedAttachment(**attachment))
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ArchivedAttachment.objects.bulk_create(archiving_attachments)
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move_attachment_message_to_archive_by_message(message_ids)
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# Remove data from main tables
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Message.objects.filter(id__in=message_ids).delete()
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user_messages.filter(id__in=ArchivedUserMessage.objects.all(),
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message_id__isnull=True).delete()
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archived_attachments = ArchivedAttachment.objects.filter(messages__id__in=message_ids).distinct()
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Attachment.objects.filter(messages__isnull=True, id__in=archived_attachments).delete()
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