new_contents: """
  Facebook Graph Feed API Provider
  ================================
  
  This provider needs `offline_access` permission.
  
  See here how to get an access token with all permissions:
  http://liquid9.tv/blog/2011/may/12/obtaining-permanent-facebook-oauth-access-token/
  
  Required configuration keys::
  
      {
      "provider": "newswall.providers.fb_graph_feed",
      "object": "FEINHEIT",
      "from_id": "239846135569",
      "access_token": "..."
      }
  """
  
  from datetime import datetime
  import facebook
  
  from newswall.providers.base import ProviderBase
  
  
  class Provider(ProviderBase):
      def update(self):
          graph = facebook.GraphAPI(self.config['access_token'])
          response = graph.get_object(u'%s/feed/' % self.config['object'])
  
          from_id = self.config['from_id']
  
          for entry in response['data']:
              if entry['from']['id'] != from_id:
                  continue
  
              if 'to' in entry: # messages
                  continue
  
              if 'actions' not in entry:
                  continue
  
              self.create_story(entry['actions'][0]['link'], # comment or like
                  title=entry.get('name') or entry.get('message') or entry.get('story', u''),
                  body=entry.get('message', u''),
                  image_url=entry.get('picture', u''),
                  timestamp=datetime.strptime(entry['created_time'], '%Y-%m-%dT%H:%M:%S+0000'),
                  )
  
subject: Add a simple provider for wall posts via the Facebook Graph API