funkwhale/api/funkwhale_api/common/tasks.py

99 wiersze
2.9 KiB
Python

import datetime
import logging
import tempfile
from django.conf import settings
from django.core.files import File
from django.db import transaction
from django.dispatch import receiver
from django.utils import timezone
from funkwhale_api.common import channels
from funkwhale_api.taskapp import celery
from . import models, serializers, session, signals
logger = logging.getLogger(__name__)
@celery.app.task(name="common.apply_mutation")
@transaction.atomic
@celery.require_instance(
models.Mutation.objects.exclude(is_applied=True).select_for_update(), "mutation"
)
def apply_mutation(mutation):
mutation.apply()
@receiver(signals.mutation_created)
def broadcast_mutation_created(mutation, **kwargs):
group = "instance_activity"
channels.group_send(
group,
{
"type": "event.send",
"text": "",
"data": {
"type": "mutation.created",
"mutation": serializers.APIMutationSerializer(mutation).data,
"pending_review_count": models.Mutation.objects.filter(
is_approved=None
).count(),
},
},
)
@receiver(signals.mutation_updated)
def broadcast_mutation_update(mutation, old_is_approved, new_is_approved, **kwargs):
group = "instance_activity"
channels.group_send(
group,
{
"type": "event.send",
"text": "",
"data": {
"type": "mutation.updated",
"mutation": serializers.APIMutationSerializer(mutation).data,
"pending_review_count": models.Mutation.objects.filter(
is_approved=None
).count(),
"old_is_approved": old_is_approved,
"new_is_approved": new_is_approved,
},
},
)
def fetch_remote_attachment(attachment, filename=None, save=True):
if attachment.file:
# already there, no need to fetch
return
s = session.get_session()
attachment.last_fetch_date = timezone.now()
with tempfile.TemporaryFile() as tf:
with s.get(attachment.url, timeout=5, stream=True) as r:
for chunk in r.iter_content(chunk_size=1024 * 100):
tf.write(chunk)
tf.seek(0)
if not filename:
filename = attachment.url.split("/")[-1]
filename = filename[-50:]
attachment.file.save(filename, File(tf), save=save)
@celery.app.task(name="common.prune_unattached_attachments")
def prune_unattached_attachments():
limit = timezone.now() - datetime.timedelta(
seconds=settings.ATTACHMENTS_UNATTACHED_PRUNE_DELAY
)
candidates = models.Attachment.objects.attached(False).filter(
creation_date__lte=limit
)
total = candidates.count()
logger.info("Deleting %s unattached attachments…", total)
result = candidates.delete()
logger.info("Deletion done: %s", result)