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5354f954 JW |
1 | # GNU MediaGoblin -- federated, autonomous media hosting |
2 | # Copyright (C) 2011, 2012 MediaGoblin contributors. See AUTHORS. | |
3 | # | |
4 | # This program is free software: you can redistribute it and/or modify | |
5 | # it under the terms of the GNU Affero General Public License as published by | |
6 | # the Free Software Foundation, either version 3 of the License, or | |
7 | # (at your option) any later version. | |
8 | # | |
9 | # This program is distributed in the hope that it will be useful, | |
10 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | # GNU Affero General Public License for more details. | |
13 | # | |
14 | # You should have received a copy of the GNU Affero General Public License | |
15 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
16 | ||
17 | import logging | |
18 | import json | |
939d57a0 | 19 | import traceback |
5354f954 | 20 | |
939d57a0 | 21 | from urllib2 import urlopen, Request, HTTPError |
5354f954 JW |
22 | from urllib import urlencode |
23 | ||
0df00eb6 JW |
24 | from mediagoblin.tools.common import TESTS_ENABLED |
25 | ||
5354f954 JW |
26 | _log = logging.getLogger(__name__) |
27 | ||
0df00eb6 JW |
28 | TESTS_CALLBACKS = {} |
29 | ||
5354f954 JW |
30 | |
31 | def create_post_request(url, data, **kw): | |
32 | ''' | |
33 | Issue a HTTP POST request. | |
34 | ||
35 | Args: | |
36 | url: The URL to which the POST request should be issued | |
37 | data: The data to be send in the body of the request | |
38 | **kw: | |
39 | data_parser: The parser function that is used to parse the `data` | |
40 | argument | |
41 | ''' | |
42 | data_parser = kw.get('data_parser', urlencode) | |
43 | headers = kw.get('headers', {}) | |
44 | ||
45 | return Request(url, data_parser(data), headers=headers) | |
46 | ||
47 | ||
48 | def json_processing_callback(entry): | |
49 | ''' | |
50 | Send an HTTP post to the registered callback url, if any. | |
51 | ''' | |
52 | if not entry.processing_metadata: | |
53 | _log.debug('No processing callback for {0}'.format(entry)) | |
54 | return | |
55 | ||
56 | url = entry.processing_metadata[0].callback_url | |
57 | ||
58 | _log.debug('Sending processing callback for {0} ({1})'.format( | |
59 | entry, | |
60 | url)) | |
61 | ||
62 | headers = { | |
63 | 'Content-Type': 'application/json'} | |
64 | ||
65 | data = { | |
66 | 'id': entry.id, | |
67 | 'state': entry.state} | |
68 | ||
0df00eb6 JW |
69 | # Trigger testing mode, no callback will be sent |
70 | if url.endswith('secrettestmediagoblinparam'): | |
71 | TESTS_CALLBACKS.update({url: data}) | |
72 | return True | |
73 | ||
5354f954 JW |
74 | request = create_post_request( |
75 | url, | |
76 | data, | |
77 | headers=headers, | |
78 | data_parser=json.dumps) | |
79 | ||
939d57a0 JW |
80 | try: |
81 | urlopen(request) | |
82 | _log.debug('Processing callback for {0} sent'.format(entry)) | |
5354f954 | 83 | |
939d57a0 JW |
84 | return True |
85 | except HTTPError: | |
86 | _log.error('Failed to send callback: {0}'.format( | |
87 | traceback.format_exc())) | |
88 | ||
89 | return False |