mediagoblin/gmg_commands/reprocess.py

   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 from mediagoblin.db.models import MediaEntry
  17 from mediagoblin.gmg_commands import util as commands_util
  18 from mediagoblin.tools.translate import lazy_pass_to_ugettext as _
  19 from mediagoblin.tools.pluginapi import hook_handle
  20
  21
  22 def reprocess_parser_setup(subparser):
  23     subparser.add_argument(
  24         '--available', '-a',
  25         action="store_true",
  26         help="List available actions for a given media entry")
  27     subparser.add_argument(
  28         '--state', '-s',
  29         help="Reprocess media entries in this state"
  30              " such as 'failed' or 'processed'")
  31     subparser.add_argument(
  32         '--type', '-t',
  33         help="The type of media to be reprocessed such as 'video' or 'image'")
  34     subparser.add_argument(
  35         '--media_id',
  36         nargs='*',
  37         help="The media_entry id(s) you wish to reprocess.")
  38
  39
  40 def _set_media_type(args):
  41     if args[0].media_id:
  42         if len(args[0].media_id) == 1:
  43             media_type = MediaEntry.query.filter_by(id=args[0].media_id[0])\
  44                 .first().media_type.split('.')[-1]
  45
  46             if not args[0].type:
  47                 args[0].type = media_type
  48             elif args[0].type != media_type:
  49                 raise Exception(_('The --type that you set does not match the type'
  50                                 ' of the given media_id.'))
  51         elif len(args[0].media_id) > 1:
  52             media_types = []
  53
  54             for id in args[0].media_id:
  55                 media_types.append(MediaEntry.query.filter_by(id=id).first()
  56                                 .media_type.split('.')[-1])
  57             for type in media_types:
  58                 if media_types[0] != type:
  59                     raise Exception((u'You cannot reprocess different media_types'
  60                                     ' at the same time.'))
  61
  62             if not args[0].type:
  63                 args[0].type = media_types[0]
  64             elif args[0].type != media_types[0]:
  65                 raise Exception(_('The --type that you set does not match the type'
  66                                 ' of the given media_ids.'))
  67
  68
  69 def _reprocess_all(args):
  70     if not args[0].type:
  71         if args[0].state == 'failed':
  72             if args[0].available:
  73                 print _('\n Available reprocess actions for all failed'
  74                         ' media_entries: \n \t --initial_processing')
  75                 return
  76             else:
  77                 #TODO reprocess all failed entries
  78                 pass
  79         else:
  80             raise Exception(_('You must set --type when trying to reprocess'
  81                               ' all media_entries, unless you set --state'
  82                               ' to "failed".'))
  83
  84     _run_reprocessing(args)
  85
  86
  87 def _run_reprocessing(args):
  88     if args[0].available:
  89         if args[0].state == 'failed':
  90             print _('\n Available reprocess actions for all failed'
  91                     ' media_entries: \n \t --initial_processing')
  92         else:
  93             result = hook_handle(('reprocess_action', args[0].type), args)
  94             if not result:
  95                 print _('Sorry there is no available reprocessing for {}'
  96                         ' entries in the {} state'.format(args[0].type,
  97                                                           args[0].state))
  98     else:
  99         return hook_handle(('media_reprocess', args[0].type), args)
 100
 101
 102 def _set_media_state(args):
 103     if args[0].media_id:
 104         if len(args[0].media_id) == 1:
 105             args[0].state = MediaEntry.query.filter_by(id=args[0].media_id[0])\
 106                 .first().state
 107
 108         elif len(args[0].media_id) > 1:
 109             media_states = []
 110
 111             for id in args[0].media_id:
 112                 media_states.append(MediaEntry.query.filter_by(id=id).first()
 113                                     .state)
 114             for state in media_states:
 115                 if state != media_states[0]:
 116                     raise Exception(_('You can only reprocess media that is in the'
 117                                     ' same state.'))
 118
 119             args[0].state = media_states[0]
 120
 121     if not args[0].state:
 122         args[0].state = 'processed'
 123
 124
 125 def reprocess(args):
 126     commands_util.setup_app(args[0])
 127
 128     _set_media_state(args)
 129     _set_media_type(args)
 130
 131     if not args[0].media_id:
 132         return _reprocess_all(args)
 133
 134     return _run_reprocessing(args)