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# Copyright 2024 VyOS maintainers and contributors <maintainers@vyos.io>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this library. If not, see <http://www.gnu.org/licenses/>.
"""
Library used to interface with FRRs mgmtd introduced in version 10.0
"""
import os
from vyos.defaults import frr_debug_enable
from vyos.utils.file import write_file
from vyos.utils.process import rc_cmd
from vyos.template import render_to_string
from vyos import ConfigError
DEBUG_ON = os.path.exists(frr_debug_enable)
def debug(message):
if not DEBUG_ON:
return
print(message)
frr_protocols = ['babel', 'bfd', 'bgp', 'eigrp', 'isis', 'mpls', 'nhrp',
'openfabric', 'ospf', 'ospfv3', 'pim', 'pim6', 'rip',
'ripng', 'rpki', 'segment_routing', 'static']
bgp_daemon = 'bgpd'
isis_daemon = 'isisd'
mgmt_daemon = 'mgmtd'
openfabric_daemon = 'fabricd'
pim_daemon = 'pimd'
zebra_daemon = 'zebra'
class FRRender:
def __init__(self):
self._frr_conf = '/run/frr/config/frr.conf'
def generate(self, config):
if not isinstance(config, dict):
tmp = type(config)
raise ValueError(f'Config must be of type "dict" and not "{tmp}"!')
def inline_helper(config_dict) -> str:
output = '!\n'
if 'babel' in config_dict and 'deleted' not in config_dict['babel']:
output += render_to_string('frr/babeld.frr.j2', config_dict['babel'])
output += '\n'
if 'bfd' in config_dict and 'deleted' not in config_dict['bfd']:
output += render_to_string('frr/bfdd.frr.j2', config_dict['bfd'])
output += '\n'
if 'bgp' in config_dict and 'deleted' not in config_dict['bgp']:
output += render_to_string('frr/bgpd.frr.j2', config_dict['bgp'])
output += '\n'
if 'eigrp' in config_dict and 'deleted' not in config_dict['eigrp']:
output += render_to_string('frr/eigrpd.frr.j2', config_dict['eigrp'])
output += '\n'
if 'isis' in config_dict and 'deleted' not in config_dict['isis']:
output += render_to_string('frr/isisd.frr.j2', config_dict['isis'])
output += '\n'
if 'mpls' in config_dict and 'deleted' not in config_dict['mpls']:
output += render_to_string('frr/ldpd.frr.j2', config_dict['mpls'])
output += '\n'
if 'openfabric' in config_dict and 'deleted' not in config_dict['openfabric']:
output += render_to_string('frr/fabricd.frr.j2', config_dict['openfabric'])
output += '\n'
if 'ospf' in config_dict and 'deleted' not in config_dict['ospf']:
output += render_to_string('frr/ospfd.frr.j2', config_dict['ospf'])
output += '\n'
if 'ospfv3' in config_dict and 'deleted' not in config_dict['ospfv3']:
output += render_to_string('frr/ospf6d.frr.j2', config_dict['ospfv3'])
output += '\n'
if 'pim' in config_dict and 'deleted' not in config_dict['pim']:
output += render_to_string('frr/pimd.frr.j2', config_dict['pim'])
output += '\n'
if 'pim6' in config_dict and 'deleted' not in config_dict['pim6']:
output += render_to_string('frr/pim6d.frr.j2', config_dict['pim6'])
output += '\n'
if 'policy' in config_dict and len(config_dict['policy']) > 0:
output += render_to_string('frr/policy.frr.j2', config_dict['policy'])
output += '\n'
if 'rip' in config_dict and 'deleted' not in config_dict['rip']:
output += render_to_string('frr/ripd.frr.j2', config_dict['rip'])
output += '\n'
if 'ripng' in config_dict and 'deleted' not in config_dict['ripng']:
output += render_to_string('frr/ripngd.frr.j2', config_dict['ripng'])
output += '\n'
if 'rpki' in config_dict and 'deleted' not in config_dict['rpki']:
output += render_to_string('frr/rpki.frr.j2', config_dict['rpki'])
output += '\n'
if 'segment_routing' in config_dict and 'deleted' not in config_dict['segment_routing']:
output += render_to_string('frr/zebra.segment_routing.frr.j2', config_dict['segment_routing'])
output += '\n'
if 'static' in config_dict and 'deleted' not in config_dict['static']:
output += render_to_string('frr/staticd.frr.j2', config_dict['static'])
output += '\n'
if 'ip' in config_dict and 'deleted' not in config_dict['ip']:
output += render_to_string('frr/zebra.route-map.frr.j2', config_dict['ip'])
output += '\n'
if 'ipv6' in config_dict and 'deleted' not in config_dict['ipv6']:
output += render_to_string('frr/zebra.route-map.frr.j2', config_dict['ipv6'])
output += '\n'
return output
debug('======< RENDERING CONFIG >======')
# we can not reload an empty file, thus we always embed the marker
output = '!\n'
# Enable SNMP agentx support
# SNMP AgentX support cannot be disabled once enabled
if 'snmp' in config:
output += 'agentx\n'
# Add routing protocols in global VRF
output += inline_helper(config)
# Interface configuration for EVPN is not VRF related
if 'interfaces' in config:
output += render_to_string('frr/evpn.mh.frr.j2', {'interfaces' : config['interfaces']})
output += '\n'
if 'vrf' in config and 'name' in config['vrf']:
output += render_to_string('frr/zebra.vrf.route-map.frr.j2', config['vrf']) + '\n'
for vrf, vrf_config in config['vrf']['name'].items():
if 'protocols' not in vrf_config:
continue
for protocol in vrf_config['protocols']:
vrf_config['protocols'][protocol]['vrf'] = vrf
output += inline_helper(vrf_config['protocols'])
debug(output)
debug('======< RENDERING CONFIG COMPLETE >======')
write_file(self._frr_conf, output)
if DEBUG_ON: write_file('/tmp/frr.conf.debug', output)
def apply(self):
count = 0
count_max = 5
emsg = ''
while count < count_max:
count += 1
debug(f'FRR: Reloading configuration - tries: {count} | Python class ID: {id(self)}')
cmdline = '/usr/lib/frr/frr-reload.py --reload'
if DEBUG_ON:
cmdline += ' --debug'
rc, emsg = rc_cmd(f'{cmdline} {self._frr_conf}')
if rc != 0:
debug('FRR configuration reload failed, retrying')
continue
debug(emsg)
debug('======< DONE APPLYING CONFIG >======')
break
if count >= count_max:
raise ConfigError(emsg)
def save_configuration():
""" T3217: Save FRR configuration to /run/frr/config/frr.conf """
return cmd('/usr/bin/vtysh -n --writeconfig')
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