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"""Request a change of the role of the controller."""
# System imports
# Third-party imports
# Local source tree imports
from pyof.foundation.constants import UBINT64_MAX_VALUE
from pyof.v0x04.common.header import Type
from pyof.v0x04.controller2switch.common import ControllerRole, RoleBaseMessage
__all__ = ('RoleReply',)
# Classes
class RoleReply(RoleBaseMessage):
"""RoleReply Message."""
def __init__(self, xid=None, role=ControllerRole.OFPCR_ROLE_NOCHANGE,
generation_id=UBINT64_MAX_VALUE):
"""Create a RoleReply with the optional parameters below.
Args:
xid (int): OpenFlow xid to the header.
role (:class:`~.controller2switch.common.ControllerRole`):
Is the new role that the controller wants to assume.
generation_id (int): Master Election Generation Id. The default
value is -1. For this field, it's UBINT64_MAX_VALUE.
"""
super().__init__(xid, role, generation_id)
self.header.message_type = Type.OFPT_ROLE_REPLY
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