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# Copyright (c) 2016 Cisco and/or its affiliates.
# 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.
"""Interface util library"""
from resources.libraries.python.ssh import exec_cmd_no_error
from resources.libraries.python.topology import NodeType, Topology
from resources.libraries.python.VatExecutor import VatExecutor
class InterfaceUtil(object):
"""General utilities for managing interfaces"""
@staticmethod
def set_interface_state(node, interface, state):
"""Set interface state on a node.
Function can be used for DUTs as well as for TGs.
:param node: node where the interface is
:param interface: interface name
:param state: one of 'up' or 'down'
:type node: dict
:type interface: str
:type state: str
:return: nothing
"""
if node['type'] == NodeType.DUT:
if state == 'up':
state = 'admin-up'
elif state == 'down':
state = 'admin-down'
else:
raise Exception('Unexpected interface state: {}'.format(state))
sw_if_index = Topology.get_interface_sw_index(node, interface)
VatExecutor.cmd_from_template(node, 'set_if_state.vat',
sw_if_index=sw_if_index, state=state)
elif node['type'] == NodeType.TG:
cmd = 'ip link set {} {}'.format(interface, state)
exec_cmd_no_error(node, cmd, sudo=True)
else:
raise Exception('Unknown NodeType: "{}"'.format(node['type']))
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