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"""Defines an Error Message."""
# System imports
from enum import Enum
# Local source tree imports
from pyof.v0x01.common.header import Header, Type
from pyof.v0x01.common.phy_port import PhyPort
from pyof.v0x01.foundation.base import GenericMessage
from pyof.v0x01.foundation.basic_types import PAD, UBInt8
# Third-party imports
__all__ = ('PortStatus', 'PortReason')
# Enums
class PortReason(Enum):
"""What changed about the physical port."""
#: The port was added
OFPPR_ADD = 0
#: The port was removed
OFPPR_DELETE = 1
#: Some attribute of the port has changed
OFPPR_MODIFY = 2
# Classes
class PortStatus(GenericMessage):
"""A physical port has changed in the datapath."""
#: :class:`~.header.Header`: OpenFlow Header
header = Header(message_type=Type.OFPT_PORT_STATUS)
reason = UBInt8(enum_ref=PortReason)
#: Align to 32-bits.
pad = PAD(7)
desc = PhyPort()
def __init__(self, xid=None, reason=None, desc=None):
"""Assign parameters to object attributes.
Args:
xid (int): Header's xid.
reason (PortReason): Addition, deletion or modification.
desc (PhyPort): Port description.
"""
super().__init__(xid)
self.reason = reason
self.desc = desc
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