"""Implementation of Valve output only."""
# Copyright (C) 2013 Nippon Telegraph and Telephone Corporation.
# Copyright (C) 2015 Brad Cowie, Christopher Lorier and Joe Stringer.
# Copyright (C) 2015 Research and Education Advanced Network New Zealand Ltd.
# Copyright (C) 2015--2019 The Contributors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from faucet.valve_manager_base import ValveManagerBase
[docs]
class OutputOnlyManager(ValveManagerBase):
"""Implementation of Valve output only."""
def __init__(self, vlan_table, highest_priority):
self.vlan_table = vlan_table
self.highest_priority = highest_priority
[docs]
def add_port(self, port):
ofmsgs = []
if port.output_only:
ofmsgs.append(
self.vlan_table.flowdrop(
match=self.vlan_table.match(in_port=port.number),
priority=self.highest_priority,
)
)
return ofmsgs
[docs]
def del_port(self, port):
ofmsgs = []
if port.output_only:
ofmsgs.append(
self.vlan_table.flowdel(
match=self.vlan_table.match(in_port=port.number),
priority=self.highest_priority,
)
)
return ofmsgs