factory.py 文件源码

def get_devices_by_macaddr(macaddr, extensions, debug=False):
  """Returns all devices matching given MAC address."""
  deferreds = []
  for ext in extensions:
    if hasattr(ext.obj, 'get_devices_by_macaddr'):
      deferred = ext.obj.get_devices_by_macaddr(macaddr)
      deferred.addErrback(stethoscope.api.utils.check_device_not_found)
      deferred.addCallback(functools.partial(log_response, 'device',
        ext.name + " ({!s})".format(macaddr), debug=debug))
      deferreds.append(deferred)

  deferred_list = defer.DeferredList(deferreds, consumeErrors=True)
  deferred_list.addCallback(functools.partial(stethoscope.api.utils.filter_keyed_by_status,
    ["{!s}({!s})".format(ext.name, macaddr) for ext in extensions],
    context=sys._getframe().f_code.co_name))
  deferred_list.addCallback(lambda d: chain.from_iterable(d.values()))
  deferred_list.addCallback(list)
  return deferred_list