sentinel.py 文件源码

def _get_service_names(self):
        """
        Get a list of service names from Sentinel. Tries Sentinel hosts until one succeeds; if none succeed,
        raises a ConnectionError.

        :return: the list of service names from Sentinel.
        """
        master_info = None
        connection_errors = []
        for sentinel in self._sentinel.sentinels:
            # Unfortunately, redis.sentinel.Sentinel does not support sentinel_masters, so we have to step
            # through all of its connections manually
            try:
                master_info = sentinel.sentinel_masters()
                break
            except (redis.ConnectionError, redis.TimeoutError) as e:
                connection_errors.append('Failed to connect to {} due to error: "{}".'.format(sentinel, e))
                continue
        if master_info is None:
            raise redis.ConnectionError(
                'Could not get master info from Sentinel\n{}:'.format('\n'.join(connection_errors))
            )
        return list(master_info.keys())