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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 logging
import json
import traceback
from urllib import request, parse
_log = logging.getLogger(__name__)
TESTS_CALLBACKS = {}
def create_post_request(url, data, **kw):
'''
Issue a HTTP POST request.
Args:
url: The URL to which the POST request should be issued
data: The data to be send in the body of the request
**kw:
data_parser: The parser function that is used to parse the `data`
argument
'''
data_parser = kw.get('data_parser', parse.urlencode)
headers = kw.get('headers', {})
return request.Request(url, data_parser(data), headers=headers)
def json_processing_callback(entry):
'''
Send an HTTP post to the registered callback url, if any.
'''
if not entry.processing_metadata:
_log.debug('No processing callback URL for {}'.format(entry))
return
url = entry.processing_metadata[0].callback_url
_log.debug('Sending processing callback for {} to {}'.format(
entry,
url))
headers = {
'Content-Type': 'application/json'}
data = {
'id': entry.id,
'state': entry.state}
# Trigger testing mode, no callback will be sent
if url.endswith('secrettestmediagoblinparam'):
TESTS_CALLBACKS.update({url: data})
return True
request = create_post_request(
url,
data,
headers=headers,
data_parser=json.dumps)
try:
request.urlopen(request)
_log.debug('Processing callback for {} sent'.format(entry))
return True
except request.HTTPError:
_log.error('Failed to send callback: {}'.format(
traceback.format_exc()))
return False
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