51 lines
1.8 KiB
Python
51 lines
1.8 KiB
Python
# fargo - document box
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# Copyright (C) 2016-2019 Entr'ouvert
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Affero General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import datetime
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from django.db import models
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from django.utils.timezone import now
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from . import utils
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class DocumentManager(models.Manager):
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def cleanup(self, n=None):
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'''Delete all orphaned documents'''
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n = n or now()
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# use a window of 60 seconds to be sure this document will never be used
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qs = self.filter(creation_date__lt=n - datetime.timedelta(seconds=60))
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qs = qs.filter(user_documents__isnull=True,
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oauth2_tempfiles__isnull=True)
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for document in qs:
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document.content.delete(False)
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qs.delete()
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def get_by_file(self, f):
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'''Get document with the same SHA-256 hash as the passde Django file
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like object.
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'''
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file_hash = utils.sha256_of_file(f)
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try:
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o = self.get(content_hash=file_hash)
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except self.model.DoesNotExist:
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o = self.model()
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o.content.save(file_hash, f)
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return o
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def used_space(self, user):
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return sum([doc.content.size for doc in self.filter(user_documents__user=user).distinct()])
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