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authorChristian Poessinger <christian@poessinger.com>2021-02-04 19:35:18 +0100
committerChristian Poessinger <christian@poessinger.com>2021-02-05 22:42:29 +0100
commit1f8c257f126d492a3f41eee72728b2c35b6b534e (patch)
treea4111e0fa5dccef83b755e3eb9071e39334a2eac /src/migration-scripts/quagga/7-to-8
parent3dd78cddfe90851cb7a6891add8a0973d23da292 (diff)
downloadvyos-1x-1f8c257f126d492a3f41eee72728b2c35b6b534e.tar.gz
vyos-1x-1f8c257f126d492a3f41eee72728b2c35b6b534e.zip
route: static: T2450: provide full protocol support in XML and Python with new CLI
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diff --git a/src/migration-scripts/quagga/7-to-8 b/src/migration-scripts/quagga/7-to-8
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+#!/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 static"
+
+from sys import argv
+from sys import exit
+
+from vyos.configtree import ConfigTree
+
+def migrate_interface_route(config, base, path, route_route6):
+ """ Generic migration function which can be called on every instance of
+ interface-route, beeing it ipv4, ipv6 or nested under the "static table" nodes.
+
+ What we do?
+ - Drop 'interface-route' or 'interface-route6' and migrate the route unter the
+ 'route' or 'route6' tag node.
+ """
+ if config.exists(base + path):
+ for route in config.list_nodes(base + path):
+ interface = config.list_nodes(base + path + [route, 'next-hop-interface'])
+
+ tmp = base + path + [route, 'next-hop-interface']
+ for interface in config.list_nodes(tmp):
+ new_base = base + [route_route6, route, 'interface']
+ config.set(new_base)
+ config.set_tag(base + [route_route6])
+ config.set_tag(new_base)
+ config.copy(tmp + [interface], new_base + [interface])
+
+ config.delete(base + path)
+
+def migrate_route(config, base, path, route_route6):
+ """ Generic migration function which can be called on every instance of
+ route, beeing it ipv4, ipv6 or even nested under the static table nodes.
+
+ What we do?
+ - for consistency reasons rename next-hop-interface to interface
+ - for consistency reasons rename next-hop-vrf to vrf
+ """
+ if config.exists(base + path):
+ for route in config.list_nodes(base + path):
+ next_hop = base + path + [route, 'next-hop']
+ if config.exists(next_hop):
+ for gateway in config.list_nodes(next_hop):
+ # IPv4 routes calls it next-hop-interface, rename this to
+ # interface instead so it's consitent with IPv6
+ interface_path = next_hop + [gateway, 'next-hop-interface']
+ if config.exists(interface_path):
+ config.rename(interface_path, 'interface')
+
+ # When VRFs got introduced, I (c-po) named it next-hop-vrf,
+ # we can also call it vrf which is simply shorter.
+ vrf_path = next_hop + [gateway, 'next-hop-vrf']
+ if config.exists(vrf_path):
+ config.rename(vrf_path, 'vrf')
+
+
+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', 'static']
+
+config = ConfigTree(config_file)
+if not config.exists(base):
+ # Nothing to do
+ exit(0)
+
+# Migrate interface-route into route
+migrate_interface_route(config, base, ['interface-route'], 'route')
+
+# Migrate interface-route6 into route6
+migrate_interface_route(config, base, ['interface-route6'], 'route6')
+
+# Cleanup nodes inside route
+migrate_route(config, base, ['route'], 'route')
+
+# Cleanup nodes inside route6
+migrate_route(config, base, ['route6'], 'route6')
+
+#
+# PBR table cleanup
+table_path = base + ['table']
+if config.exists(table_path):
+ for table in config.list_nodes(table_path):
+ # Migrate interface-route into route
+ migrate_interface_route(config, table_path + [table], ['interface-route'], 'route')
+
+ # Migrate interface-route6 into route6
+ migrate_interface_route(config, table_path + [table], ['interface-route6'], 'route6')
+
+ # Cleanup nodes inside route
+ migrate_route(config, table_path + [table], ['route'], 'route')
+
+ # Cleanup nodes inside route6
+ migrate_route(config, table_path + [table], ['route6'], 'route6')
+
+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)