Stores the content of a resource into the disk cache.

        Args:
            url: The url of the resource
            content: The content of the resource

        Raises:
            CacheError: If the content cannot be put in cache

def put_content(self, url, content):
        """Stores the content of a resource into the disk cache.

        Args:
            url: The url of the resource
            content: The content of the resource

        Raises:
            CacheError: If the content cannot be put in cache
        """
        cache_path = self._url_to_path(url)

        # Ensure that cache directories exist
        try:
            dir = os.path.dirname(cache_path)
            os.makedirs(dir)
        except OSError as e:
            if e.errno != errno.EEXIST:
                raise Error('Failed to create cache directories for ' % cache_path)

        try:
            with open(cache_path, 'wb') as f:
                f.write(content)
        except IOError:
            raise Error('Failed to cache content as %s for %s' % (cache_path, url))