text: # The MIT License (MIT)
  # 
  # Copyright (c) 2018 stanwood GmbH
  # 
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  # 
  # The above copyright notice and this permission notice shall be included in
  # all copies or substantial portions of the Software.
  # 
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  # THE SOFTWARE.
  import datetime
  import logging
  
  from google.appengine.api import memcache
  
  from stanwood.external_services.contentful.models.contentful_file import ContentfulFile
  from stanwood.external_services.contentful.handlers.base import CustomBaseHandler
  
  
  class CleanupCachedFilesBaseHandler(CustomBaseHandler):
      TTL_DAYS = 30
  
      @property
      def folder(self):
          return ''
  
      def get(self):
          logging.info("Removing files older than {} days".format(self.TTL_DAYS))
  
          old_files = ContentfulFile.query(
              ContentfulFile.created <= datetime.datetime.utcnow() - datetime.timedelta(days=self.TTL_DAYS)
          )
  
          for contentful_file in old_files:
              logging.debug(u"Deleting {}".format(contentful_file.name))
  
              contentful_file.key.delete()
              blob = self.bucket.blob(contentful_file.name)
              blob.delete()
  
              try:
                  memcache.delete(contentful_file.memcache_key)
              except AttributeError:
                  logging.warning("Could not remove url from memcache.")
  