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# GNU MediaGoblin -- federated, autonomous media hosting
# Copyright (C) 2011, 2012 MediaGoblin contributors. See AUTHORS.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import json
import logging
import uuid
from os.path import splitext
from werkzeug.datastructures import FileStorage
from werkzeug.exceptions import BadRequest, Forbidden
from werkzeug.utils import secure_filename
from werkzeug.wrappers import Response
from celery import registry
from mediagoblin.db.util import ObjectId
from mediagoblin.decorators import require_active_login
from mediagoblin.processing import mark_entry_failed
from mediagoblin.processing.task import ProcessMedia
from mediagoblin.meddleware.csrf import csrf_exempt
from mediagoblin.media_types import sniff_media
from mediagoblin.plugins.api.tools import api_auth, get_entry_serializable, \
json_response
_log = logging.getLogger(__name__)
@csrf_exempt
@api_auth
@require_active_login
def post_entry(request):
_log.debug('Posting entry')
if request.method == 'OPTIONS':
return json_response({'status': 200})
if request.method != 'POST':
_log.debug('Must POST against post_entry')
raise BadRequest()
if not 'file' in request.files \
or not isinstance(request.files['file'], FileStorage) \
or not request.files['file'].stream:
_log.debug('File field not found')
raise BadRequest()
media_file = request.files['file']
media_type, media_manager = sniff_media(media_file)
entry = request.db.MediaEntry()
entry.id = ObjectId()
entry.media_type = unicode(media_type)
entry.title = unicode(request.form.get('title')
or splitext(media_file.filename)[0])
entry.description = unicode(request.form.get('description'))
entry.license = unicode(request.form.get('license', ''))
entry.uploader = request.user.id
entry.generate_slug()
task_id = unicode(uuid.uuid4())
# Now store generate the queueing related filename
queue_filepath = request.app.queue_store.get_unique_filepath(
['media_entries',
task_id,
secure_filename(media_file.filename)])
# queue appropriately
queue_file = request.app.queue_store.get_file(
queue_filepath, 'wb')
with queue_file:
queue_file.write(request.files['file'].stream.read())
# Add queued filename to the entry
entry.queued_media_file = queue_filepath
entry.queued_task_id = task_id
# Save now so we have this data before kicking off processing
entry.save(validate=True)
if request.form.get('callback_url'):
metadata = request.db.ProcessingMetaData()
metadata.media_entry = entry
metadata.callback_url = unicode(request.form['callback_url'])
metadata.save()
# Pass off to processing
#
# (... don't change entry after this point to avoid race
# conditions with changes to the document via processing code)
process_media = registry.tasks[ProcessMedia.name]
try:
process_media.apply_async(
[unicode(entry.id)], {},
task_id=task_id)
except BaseException as e:
# The purpose of this section is because when running in "lazy"
# or always-eager-with-exceptions-propagated celery mode that
# the failure handling won't happen on Celery end. Since we
# expect a lot of users to run things in this way we have to
# capture stuff here.
#
# ... not completely the diaper pattern because the
# exception is re-raised :)
mark_entry_failed(entry.id, e)
# re-raise the exception
raise
return json_response(get_entry_serializable(entry, request.urlgen))
@api_auth
def api_test(request):
if not request.user:
raise Forbidden()
user_data = {
'username': request.user.username,
'email': request.user.email}
# TODO: This is the *only* thing using Response() here, should that
# not simply use json_response()?
return Response(json.dumps(user_data))
def get_entries(request):
entries = request.db.MediaEntry.query
# TODO: Make it possible to fetch unprocessed media, or media in-processing
entries = entries.filter_by(state=u'processed')
# TODO: Add sort order customization
entries = entries.order_by(request.db.MediaEntry.created.desc())
# TODO: Fetch default and upper limit from config
entries = entries.limit(int(request.GET.get('limit') or 10))
entries_serializable = []
for entry in entries:
entries_serializable.append(get_entry_serializable(entry, request.urlgen))
return json_response(entries_serializable)
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