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#!/usr/bin/env python3
#
# Copyright (C) VyOS Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
from vyos import ConfigError
from vyos.config import Config
from vyos.configdict import get_interface_dict
from vyos.configdep import set_dependents, call_dependents
from vyos.utils.process import is_systemd_service_active
from vyos.ifconfig.vpp import VPPLoopbackInterface
def get_config(config=None) -> dict:
"""Get Loopback interface configuration
Args:
config (vyos.config.Config, optional): The VyOS configuration dictionary
Returns:
dict: Loopback interface configuration
"""
if config:
conf = config
else:
conf = Config()
base = ['interfaces', 'vpp', 'loopback']
ifname, config = get_interface_dict(conf, base)
if not conf.exists(['vpp']) and not conf.exists(base):
config['remove_vpp'] = True
return config
# Get 'vpp settings' config
config['vpp_settings'] = conf.get_config_dict(
['vpp', 'settings'],
key_mangling=('-', '_'),
get_first_key=True,
no_tag_node_value_mangle=True,
)
# NAT dependency
if conf.exists(['vpp', 'nat', 'nat44']):
set_dependents('vpp_nat_nat44', conf)
if conf.exists(['vpp', 'nat', 'cgnat']):
set_dependents('vpp_nat_cgnat', conf)
# ACL dependency
if conf.exists(['vpp', 'acl']):
set_dependents('vpp_acl', conf)
return config
def verify(config):
# No need to verify anything if vpp is removed
if 'remove_vpp' in config:
return None
if not is_systemd_service_active('vpp.service'):
raise ConfigError(
'Cannot configure VPP loopback interface: vpp.service is not running'
)
def generate(config):
pass
def apply(config):
if 'remove_vpp' in config:
return None
ifname = config.get('ifname')
loopback = VPPLoopbackInterface(ifname, config)
loopback.remove()
if 'deleted' in config:
return
loopback.update(config)
call_dependents()
return None
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)
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