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#!/usr/bin/env python3
#
# Copyright (C) 2020 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import argparse
import jinja2
from subprocess import check_output
from json import loads
vrf_out_tmpl = """
VRF name state mac address flags interfaces
-------- ----- ----------- ----- ----------
{%- for v in vrf %}
{{"%-16s"|format(v.ifname)}} {{ "%-8s"|format(v.operstate | lower())}} {{"%-17s"|format(v.address | lower())}} {{ v.flags|join(',')|lower()}} {{v.members|join(',')|lower()}}
{%- endfor %}
"""
def list_vrfs():
command = 'ip -j -br link show type vrf'
answer = loads(check_output(command.split()).decode())
return [_ for _ in answer if _]
def list_vrf_members(vrf):
command = f'ip -j -br link show master {vrf}'
answer = loads(check_output(command.split()).decode())
return [_ for _ in answer if _]
parser = argparse.ArgumentParser()
group = parser.add_mutually_exclusive_group()
group.add_argument("-e", "--extensive", action="store_true",
help="provide detailed vrf informatio")
parser.add_argument('interface', metavar='I', type=str, nargs='?',
help='interface to display')
args = parser.parse_args()
if args.extensive:
data = { 'vrf': [] }
for vrf in list_vrfs():
name = vrf['ifname']
if args.interface and name != args.interface:
continue
vrf['members'] = []
for member in list_vrf_members(name):
vrf['members'].append(member['ifname'])
data['vrf'].append(vrf)
tmpl = jinja2.Template(vrf_out_tmpl)
print(tmpl.render(data))
else:
print(" ".join([vrf['ifname'] for vrf in list_vrfs()]))
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