#!/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/>. # - T548, Migrate "bgp xxx maximum-paths ebgp/ibgp xxx" to # "bgp xxx address-family ipv4-unicast maximum-paths ebgp/ibgp xxx" import sys from vyos.configtree import ConfigTree if (len(sys.argv) < 2): print("Must specify file name!") sys.exit(1) file_name = sys.argv[1] with open(file_name, 'r') as f: config_file = f.read() base = ['protocols', 'bgp'] config = ConfigTree(config_file) if not config.exists(base): # Nothing to do sys.exit(0) # Check if BGP is actually configured and obtain the ASN asn_list = config.list_nodes(base) if asn_list: # There's always just one BGP node, if any bgp_base = base + [asn_list[0]] # Check if "bgp xxx maximum-paths" exists, migrate to "bgp xxx address-family ipv4-unicast maximum-paths" max_path = bgp_base + ['maximum-paths'] if config.exists(max_path): if config.exists(max_path + ['ebgp']): max_ebgp = config.return_value(max_path + ['ebgp']) config.set(bgp_base + ['address-family', 'ipv4-unicast', 'maximum-paths', 'ebgp'], max_ebgp) if config.exists(max_path + ['ibgp']): max_ibgp = config.return_value(max_path + ['ibgp']) config.set(bgp_base + ['address-family', 'ipv4-unicast', 'maximum-paths', 'ibgp'], max_ibgp ) config.delete(max_path) 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)) sys.exit(1)