def _text_filter_input(self, input_gen, scraper_config):
        """
        Filters out the text input line by line to avoid parsing and processing
        metrics we know we don't want to process. This only works on `text/plain`
        payloads, and is an INTERNAL FEATURE implemented for the kubelet check
        :param input_get: line generator
        :output: generator of filtered lines
        """
        for line in input_gen:
            for item in scraper_config['_text_filter_blacklist']:
                if item in line:
                    break
            else:
                # No blacklist matches, passing the line through
                yield line