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#!/usr/bin/env python3
#
# Copyright (C) 2024 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 json
import re
import sys
from datetime import datetime
from vyos.config import Config
from vyos.utils.process import cmd
import vyos.opmode
wlb_status_file = '/run/wlb_status.json'
status_format = '''Interface: {ifname}
Status: {status}
Last Status Change: {last_change}
Last Interface Success: {last_success}
Last Interface Failure: {last_failure}
Interface Failures: {failures}
'''
def _verify(func):
"""Decorator checks if WLB config exists"""
from functools import wraps
@wraps(func)
def _wrapper(*args, **kwargs):
config = Config()
if not config.exists(['load-balancing', 'wan']):
unconf_message = 'WAN load-balancing is not configured'
raise vyos.opmode.UnconfiguredSubsystem(unconf_message)
return func(*args, **kwargs)
return _wrapper
def _get_raw_data():
with open(wlb_status_file, 'r') as f:
data = json.loads(f.read())
if not data:
return {}
return data
def _get_formatted_output(raw_data):
for ifname, if_data in raw_data.items():
latest_change = if_data['last_success'] if if_data['last_success'] > if_data['last_failure'] else if_data['last_failure']
change_dt = datetime.fromtimestamp(latest_change) if latest_change > 0 else None
success_dt = datetime.fromtimestamp(if_data['last_success']) if if_data['last_success'] > 0 else None
failure_dt = datetime.fromtimestamp(if_data['last_failure']) if if_data['last_failure'] > 0 else None
now = datetime.utcnow()
fmt_data = {
'ifname': ifname,
'status': "active" if if_data['state'] else "failed",
'last_change': change_dt.strftime("%Y-%m-%d %H:%M:%S") if change_dt else 'N/A',
'last_success': str(now - success_dt) if success_dt else 'N/A',
'last_failure': str(now - failure_dt) if failure_dt else 'N/A',
'failures': if_data['failure_count']
}
print(status_format.format(**fmt_data))
@_verify
def show_summary(raw: bool):
data = _get_raw_data()
if raw:
return data
else:
return _get_formatted_output(data)
@_verify
def show_connection(raw: bool):
res = cmd('sudo conntrack -L -n')
lines = res.split("\n")
filtered_lines = [line for line in lines if re.search(r' mark=[1-9]', line)]
if raw:
return filtered_lines
for line in lines:
print(line)
@_verify
def show_status(raw: bool):
res = cmd('sudo nft list chain ip vyos_wanloadbalance wlb_mangle_prerouting')
lines = res.split("\n")
filtered_lines = [line.replace("\t", "") for line in lines[3:-2] if 'meta mark set' not in line]
if raw:
return filtered_lines
for line in filtered_lines:
print(line)
if __name__ == "__main__":
try:
res = vyos.opmode.run(sys.modules[__name__])
if res:
print(res)
except (ValueError, vyos.opmode.Error) as e:
print(e)
sys.exit(1)
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