diff options
Diffstat (limited to 'src')
| -rwxr-xr-x | src/conf_mode/protocols_vrf.py | 100 | ||||
| -rwxr-xr-x | src/migration-scripts/vrf/0-to-1 | 112 |
2 files changed, 212 insertions, 0 deletions
diff --git a/src/conf_mode/protocols_vrf.py b/src/conf_mode/protocols_vrf.py new file mode 100755 index 000000000..7c32c7013 --- /dev/null +++ b/src/conf_mode/protocols_vrf.py @@ -0,0 +1,100 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2021 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 os + +from sys import exit + +from vyos.config import Config +from vyos.template import render +from vyos.template import render_to_string +from vyos.util import call +from vyos import ConfigError +from vyos import frr +from vyos import airbag +airbag.enable() + +config_file = r'/tmp/vrf.frr' +frr_daemon = 'staticd' + +DEBUG = os.path.exists('/tmp/vrf.debug') +if DEBUG: + import logging + lg = logging.getLogger("vyos.frr") + lg.setLevel(logging.DEBUG) + ch = logging.StreamHandler() + lg.addHandler(ch) + +def get_config(config=None): + if config: + conf = config + else: + conf = Config() + base = ['protocols', 'vrf'] + vrf = conf.get_config_dict(base, key_mangling=('-', '_')) + return vrf + +def verify(vrf): + + return None + +def generate(vrf): + # render(config) not needed, its only for debug + render(config_file, 'frr/vrf.frr.tmpl', vrf) + vrf['new_frr_config'] = render_to_string('frr/vrf.frr.tmpl', vrf) + + return None + +def apply(vrf): + # Save original configuration prior to starting any commit actions + frr_cfg = frr.FRRConfig() + frr_cfg.load_configuration(frr_daemon) + frr_cfg.modify_section(r'vrf \S+', '') + frr_cfg.add_before(r'(ip prefix-list .*|route-map .*|line vty)', vrf['new_frr_config']) + + # Debugging + if DEBUG: + from pprint import pprint + print('') + print('--------- DEBUGGING ----------') + pprint(dir(frr_cfg)) + print('Existing config:\n') + for line in frr_cfg.original_config: + print(line) + print(f'Replacement config:\n') + print(f'{vrf["new_frr_config"]}') + print(f'Modified config:\n') + print(f'{frr_cfg}') + + frr_cfg.commit_configuration(frr_daemon) + + # If FRR config is blank, rerun the blank commit x times due to frr-reload + # behavior/bug not properly clearing out on one commit. + if vrf['new_frr_config'] == '': + for a in range(5): + frr_cfg.commit_configuration(frr_daemon) + + return None + +if __name__ == '__main__': + try: + c = get_config() + verify(c) + generate(c) + apply(c) + except ConfigError as e: + print(e) + exit(1) diff --git a/src/migration-scripts/vrf/0-to-1 b/src/migration-scripts/vrf/0-to-1 new file mode 100755 index 000000000..29b2fab74 --- /dev/null +++ b/src/migration-scripts/vrf/0-to-1 @@ -0,0 +1,112 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2021 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/>. + +# - T2450: drop interface-route and interface-route6 from "protocols vrf" + +from sys import argv +from sys import exit +from vyos.configtree import ConfigTree + +if (len(argv) < 2): + print("Must specify file name!") + exit(1) + +file_name = argv[1] + +with open(file_name, 'r') as f: + config_file = f.read() + +base = ['protocols', 'vrf'] +config = ConfigTree(config_file) + +if not config.exists(base): + # Nothing to do + exit(0) + +for vrf in config.list_nodes(base): + static_base = base + [vrf, 'static'] + if not config.exists(static_base): + continue + + # + # Migrate interface-route into route + # + interface_route_path = static_base + ['interface-route'] + if config.exists(interface_route_path): + for route in config.list_nodes(interface_route_path): + interface = config.list_nodes(interface_route_path + [route, 'next-hop-interface']) + + tmp = interface_route_path + [route, 'next-hop-interface'] + for interface in config.list_nodes(tmp): + new_base = static_base + ['route', route, 'interface'] + config.set(new_base) + config.set_tag(new_base) + config.copy(tmp + [interface], new_base + [interface]) + + config.delete(interface_route_path) + + # + # Migrate interface-route6 into route6 + # + interface_route_path = static_base + ['interface-route6'] + if config.exists(interface_route_path): + for route in config.list_nodes(interface_route_path): + interface = config.list_nodes(interface_route_path + [route, 'next-hop-interface']) + + tmp = interface_route_path + [route, 'next-hop-interface'] + for interface in config.list_nodes(tmp): + new_base = static_base + ['route6', route, 'interface'] + config.set(new_base) + config.set_tag(new_base) + config.copy(tmp + [interface], new_base + [interface]) + + config.delete(interface_route_path) + + # + # Cleanup nodes inside route + # + route_path = static_base + ['route'] + if config.exists(route_path): + for route in config.list_nodes(route_path): + next_hop = route_path + [route, 'next-hop'] + if config.exists(next_hop): + for gateway in config.list_nodes(next_hop): + interface_path = next_hop + [gateway, 'next-hop-interface'] + if config.exists(interface_path): + config.rename(interface_path, 'interface') + vrf_path = next_hop + [gateway, 'next-hop-vrf'] + if config.exists(vrf_path): + config.rename(vrf_path, 'vrf') + + # + # Cleanup nodes inside route6 + # + route_path = static_base + ['route6'] + if config.exists(route_path): + for route in config.list_nodes(route_path): + next_hop = route_path + [route, 'next-hop'] + if config.exists(next_hop): + for gateway in config.list_nodes(next_hop): + vrf_path = next_hop + [gateway, 'next-hop-vrf'] + if config.exists(vrf_path): + config.rename(vrf_path, 'vrf') + +try: + with open(file_name, 'w') as f: + f.write(config.to_string()) +except OSError as e: + print("Failed to save the modified config: {}".format(e)) + exit(1) |