def __call__(self, t_path, name_info, i_str):
        name_info.update(get_name_info(t_path, i_str=i_str))

        if name_info["num"] == 0:
            return None

        o_fname = self.config["output_name"] % name_info
        o_dir = self.config["output_path"]
        o_path = os.path.join(o_dir, o_fname + ".tar.gz")

        ## if dir is missing make it
        dirname = os.path.dirname(o_path)
        if dirname and not os.path.exists(dirname):
            os.makedirs(dirname)

        t_path2 = tarball_export(t_path, name_info)

        ## do an atomic renaming
        try:
            logger.debug("attemping os.rename(%r, %r)" % (t_path2, o_path))
            os.rename(t_path2, o_path)
        except OSError, exc:
            if exc.errno == 18:
                patient_move(t_path2, o_path)
            else:
                msg = "failed shutil.copy2(%r, %r) and/or os.remove(t_path)\n%s" % (
                    t_path2,
                    o_path,
                    traceback.format_exc(exc),
                )
                logger.critical(traceback.format_exc(exc))
                raise
    def __call__(self, t_path, name_info, i_str):
        '''
        Load chunk from t_path and put it into the right place in s3
        using the output_name template from the config
        '''
        name_info.update( get_name_info(t_path, i_str=i_str) )
        if name_info['num'] == 0:
            o_path = None
            return o_path

        o_fname = self.config['output_name'] % name_info
        o_path = os.path.join(self.config['s3_path_prefix'], o_fname + '.tar.gz')

        logger.info('to_s3_tarballs: \n\t%r\n\tfrom: %r\n\tby way of %r ' % (o_path, i_str, t_path))

        ## forcibly collect dereferenced objects
        #gc.collect()

        t_path2 = tarball_export(t_path, name_info)

        data = open(t_path2).read()
        name_info['md5'] = hashlib.md5(data).hexdigest() # pylint: disable=E1101

        self.upload(o_path, data, name_info)
        self.cleanup(t_path)
        self.cleanup(t_path2)

        logger.info('to_s3_tarballs finished:\n\t input: %s\n\toutput: %s' % (i_str, o_path))
        ## return the final output path
        return o_path