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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 urllib
import urllib2
import logging
import uuid
from celery import registry
from werkzeug.utils import secure_filename
from mediagoblin import mg_globals
from mediagoblin.processing import mark_entry_failed
from mediagoblin.processing.task import ProcessMedia
_log = logging.getLogger(__name__)
def prepare_queue_task(app, entry, filename):
"""
Prepare a MediaEntry for the processing queue and get a queue file
"""
# We generate this ourselves so we know what the taks id is for
# retrieval later.
# (If we got it off the task's auto-generation, there'd be
# a risk of a race condition when we'd save after sending
# off the task)
task_id = unicode(uuid.uuid4())
entry.queued_task_id = task_id
# Now store generate the queueing related filename
queue_filepath = app.queue_store.get_unique_filepath(
['media_entries',
task_id,
secure_filename(filename)])
# queue appropriately
queue_file = app.queue_store.get_file(
queue_filepath, 'wb')
# Add queued filename to the entry
entry.queued_media_file = queue_filepath
return queue_file
def run_process_media(entry):
process_media = registry.tasks[ProcessMedia.name]
try:
process_media.apply_async(
[unicode(entry.id)], {},
task_id=entry.queued_task_id)
except BaseException as exc:
# 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, exc)
# re-raise the exception
raise
def handle_push_urls(request):
if mg_globals.app_config["push_urls"]:
feed_url = request.urlgen(
'mediagoblin.user_pages.atom_feed',
qualified=True,
user=request.user.username)
hubparameters = {
'hub.mode': 'publish',
'hub.url': feed_url}
hubdata = urllib.urlencode(hubparameters)
hubheaders = {
"Content-type": "application/x-www-form-urlencoded",
"Connection": "close"}
for huburl in mg_globals.app_config["push_urls"]:
hubrequest = urllib2.Request(huburl, hubdata, hubheaders)
try:
hubresponse = urllib2.urlopen(hubrequest)
except urllib2.HTTPError as exc:
# This is not a big issue, the item will be fetched
# by the PuSH server next time we hit it
_log.warning(
"push url %r gave error %r", huburl, exc.code)
except urllib2.URLError as exc:
_log.warning(
"push url %r is unreachable %r", huburl, exc.reason)
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