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-rw-r--r--[-rwxr-xr-x]src/migration-scripts/bgp/1-to-2112
1 files changed, 46 insertions, 66 deletions
diff --git a/src/migration-scripts/bgp/1-to-2 b/src/migration-scripts/bgp/1-to-2
index a40d86e67..c0fc3b05a 100755..100644
--- a/src/migration-scripts/bgp/1-to-2
+++ b/src/migration-scripts/bgp/1-to-2
@@ -1,84 +1,64 @@
-#!/usr/bin/env python3
+# Copyright 2021-2024 VyOS maintainers and contributors <maintainers@vyos.io>
#
-# Copyright (C) 2021-2024 VyOS maintainers and contributors
+# 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 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,
+# 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 General Public License for more details.
+# 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 General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
+# 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/>.
# T3741: no-ipv4-unicast is now enabled by default
# T5937: Migrate IPv6 BGP Neighbor Peer Groups
-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]
+base = ['protocols', 'bgp']
-with open(file_name, 'r') as f:
- config_file = f.read()
+def migrate(config: ConfigTree) -> None:
+ if not config.exists(base):
+ # Nothing to do
+ return
-base = ['protocols', 'bgp']
-config = ConfigTree(config_file)
+ # This is now a default option - simply delete it.
+ # As it was configured explicitly - we can also bail out early as we need to
+ # do nothing!
+ if config.exists(base + ['parameters', 'default', 'no-ipv4-unicast']):
+ config.delete(base + ['parameters', 'default', 'no-ipv4-unicast'])
-if not config.exists(base):
- # Nothing to do
- exit(0)
+ # Check if the "default" node is now empty, if so - remove it
+ if len(config.list_nodes(base + ['parameters', 'default'])) == 0:
+ config.delete(base + ['parameters', 'default'])
-# This is now a default option - simply delete it.
-# As it was configured explicitly - we can also bail out early as we need to
-# do nothing!
-if config.exists(base + ['parameters', 'default', 'no-ipv4-unicast']):
- config.delete(base + ['parameters', 'default', 'no-ipv4-unicast'])
+ # Check if the "default" node is now empty, if so - remove it
+ if len(config.list_nodes(base + ['parameters'])) == 0:
+ config.delete(base + ['parameters'])
+ else:
+ # As we now install a new default option into BGP we need to migrate all
+ # existing BGP neighbors and restore the old behavior
+ if config.exists(base + ['neighbor']):
+ for neighbor in config.list_nodes(base + ['neighbor']):
+ peer_group = base + ['neighbor', neighbor, 'peer-group']
+ if config.exists(peer_group):
+ peer_group_name = config.return_value(peer_group)
+ # peer group enables old behavior for neighbor - bail out
+ if config.exists(base + ['peer-group', peer_group_name, 'address-family', 'ipv4-unicast']):
+ continue
- # Check if the "default" node is now empty, if so - remove it
- if len(config.list_nodes(base + ['parameters', 'default'])) == 0:
- config.delete(base + ['parameters', 'default'])
+ afi_ipv4 = base + ['neighbor', neighbor, 'address-family', 'ipv4-unicast']
+ if not config.exists(afi_ipv4):
+ config.set(afi_ipv4)
- # Check if the "default" node is now empty, if so - remove it
- if len(config.list_nodes(base + ['parameters'])) == 0:
- config.delete(base + ['parameters'])
-else:
- # As we now install a new default option into BGP we need to migrate all
- # existing BGP neighbors and restore the old behavior
+ # Migrate IPv6 AFI peer-group
if config.exists(base + ['neighbor']):
for neighbor in config.list_nodes(base + ['neighbor']):
- peer_group = base + ['neighbor', neighbor, 'peer-group']
- if config.exists(peer_group):
- peer_group_name = config.return_value(peer_group)
- # peer group enables old behavior for neighbor - bail out
- if config.exists(base + ['peer-group', peer_group_name, 'address-family', 'ipv4-unicast']):
- continue
-
- afi_ipv4 = base + ['neighbor', neighbor, 'address-family', 'ipv4-unicast']
- if not config.exists(afi_ipv4):
- config.set(afi_ipv4)
-
-# Migrate IPv6 AFI peer-group
-if config.exists(base + ['neighbor']):
- for neighbor in config.list_nodes(base + ['neighbor']):
- tmp_path = base + ['neighbor', neighbor, 'address-family', 'ipv6-unicast', 'peer-group']
- if config.exists(tmp_path):
- peer_group = config.return_value(tmp_path)
- config.set(base + ['neighbor', neighbor, 'peer-group'], value=peer_group)
- config.delete(tmp_path)
-
-try:
- with open(file_name, 'w') as f:
- f.write(config.to_string())
-except OSError as e:
- print(f'Failed to save the modified config: {e}')
- exit(1)
+ tmp_path = base + ['neighbor', neighbor, 'address-family', 'ipv6-unicast', 'peer-group']
+ if config.exists(tmp_path):
+ peer_group = config.return_value(tmp_path)
+ config.set(base + ['neighbor', neighbor, 'peer-group'], value=peer_group)
+ config.delete(tmp_path)