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authorJohn Estabrook <jestabro@vyos.io>2024-06-19 20:16:05 -0500
committerJohn Estabrook <jestabro@vyos.io>2024-09-11 11:53:48 -0500
commitb5db9395ed576ef97b1692ca66c00900c532d6a1 (patch)
tree5e06276d2b9b3a90f6ae756bbe6be20225a89cc4 /src/migration-scripts/vrf/2-to-3
parentccff9ffdd8e3e7336b94c70575cc7ab4b44047cc (diff)
downloadvyos-1x-b5db9395ed576ef97b1692ca66c00900c532d6a1.tar.gz
vyos-1x-b5db9395ed576ef97b1692ca66c00900c532d6a1.zip
migration: T6007: convert all migration scripts to load as module
(cherry picked from commit 26740a8d583f64dc0a27b59dd4ae303056972c0b)
Diffstat (limited to 'src/migration-scripts/vrf/2-to-3')
-rw-r--r--[-rwxr-xr-x]src/migration-scripts/vrf/2-to-3149
1 files changed, 65 insertions, 84 deletions
diff --git a/src/migration-scripts/vrf/2-to-3 b/src/migration-scripts/vrf/2-to-3
index d45b185ee..acacffb41 100755..100644
--- a/src/migration-scripts/vrf/2-to-3
+++ b/src/migration-scripts/vrf/2-to-3
@@ -1,26 +1,23 @@
-#!/usr/bin/env python3
+# Copyright 2021-2024 VyOS maintainers and contributors <maintainers@vyos.io>
#
-# Copyright (C) 2021 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/>.
# Since connection tracking zones are int16, VRFs tables maximum value must
# be limited to 65535
# Also, interface names in nftables cannot start from numbers,
# so VRF name should not start from a number
-from sys import argv
-from sys import exit
from random import randrange
from random import choice
from string import ascii_lowercase
@@ -69,76 +66,60 @@ def _search_tables(config_commands, table_num):
return table_items
-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 = ['vrf', 'name']
-config = ConfigTree(config_file)
-
-if not config.exists(base):
- # Nothing to do
- exit(0)
-
-# Get a list of all currently used VRFs and tables
-vrfs_current = {}
-for vrf in config.list_nodes(base):
- vrfs_current[vrf] = int(config.return_value(base + [vrf, 'table']))
-
-# Check VRF names and table numbers
-name_regex = re.compile(r'^\d.*$')
-for vrf_name, vrf_table in vrfs_current.items():
- # Check table number
- if vrf_table > 65535:
- # Find new unused table number
- vrfs_current[vrf_name] = None
- while not vrfs_current[vrf_name]:
- table_random = randrange(100, 65535)
- if table_random not in vrfs_current.values():
- vrfs_current[vrf_name] = table_random
- # Update number to a new one
- config.set(['vrf', 'name', vrf_name, 'table'],
- vrfs_current[vrf_name],
- replace=True)
- # Check config items with old table number and replace to new one
- config_commands = config.to_commands().split('\n')
- table_config_lines = _search_tables(config_commands, vrf_table)
- # Rename table nodes
- if table_config_lines.get('table_tags'):
- for table_config_path in table_config_lines.get('table_tags'):
- config.rename(table_config_path, f'{vrfs_current[vrf_name]}')
- # Replace table values
- if table_config_lines.get('table_values'):
- for table_config_path in table_config_lines.get('table_values'):
- config.set(table_config_path,
- f'{vrfs_current[vrf_name]}',
- replace=True)
-
- # Check VRF name
- if name_regex.match(vrf_name):
- vrf_name_new = None
- while not vrf_name_new:
- vrf_name_rand = f'{choice(ascii_lowercase)}{vrf_name}'[:15]
- if vrf_name_rand not in vrfs_current:
- vrf_name_new = vrf_name_rand
- # Update VRF name to a new one
- config.rename(['vrf', 'name', vrf_name], vrf_name_new)
- # Check config items with old VRF name and replace to new one
- config_commands = config.to_commands().split('\n')
- vrf_config_lines = _search_vrfs(config_commands, vrf_name)
- # Rename VRF to a new name
- if vrf_config_lines:
- for vrf_value_path in vrf_config_lines:
- config.set(vrf_value_path, vrf_name_new, replace=True)
-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)
+def migrate(config: ConfigTree) -> None:
+ if not config.exists(base):
+ # Nothing to do
+ return
+
+ # Get a list of all currently used VRFs and tables
+ vrfs_current = {}
+ for vrf in config.list_nodes(base):
+ vrfs_current[vrf] = int(config.return_value(base + [vrf, 'table']))
+
+ # Check VRF names and table numbers
+ name_regex = re.compile(r'^\d.*$')
+ for vrf_name, vrf_table in vrfs_current.items():
+ # Check table number
+ if vrf_table > 65535:
+ # Find new unused table number
+ vrfs_current[vrf_name] = None
+ while not vrfs_current[vrf_name]:
+ table_random = randrange(100, 65535)
+ if table_random not in vrfs_current.values():
+ vrfs_current[vrf_name] = table_random
+ # Update number to a new one
+ config.set(['vrf', 'name', vrf_name, 'table'],
+ vrfs_current[vrf_name],
+ replace=True)
+ # Check config items with old table number and replace to new one
+ config_commands = config.to_commands().split('\n')
+ table_config_lines = _search_tables(config_commands, vrf_table)
+ # Rename table nodes
+ if table_config_lines.get('table_tags'):
+ for table_config_path in table_config_lines.get('table_tags'):
+ config.rename(table_config_path, f'{vrfs_current[vrf_name]}')
+ # Replace table values
+ if table_config_lines.get('table_values'):
+ for table_config_path in table_config_lines.get('table_values'):
+ config.set(table_config_path,
+ f'{vrfs_current[vrf_name]}',
+ replace=True)
+
+ # Check VRF name
+ if name_regex.match(vrf_name):
+ vrf_name_new = None
+ while not vrf_name_new:
+ vrf_name_rand = f'{choice(ascii_lowercase)}{vrf_name}'[:15]
+ if vrf_name_rand not in vrfs_current:
+ vrf_name_new = vrf_name_rand
+ # Update VRF name to a new one
+ config.rename(['vrf', 'name', vrf_name], vrf_name_new)
+ # Check config items with old VRF name and replace to new one
+ config_commands = config.to_commands().split('\n')
+ vrf_config_lines = _search_vrfs(config_commands, vrf_name)
+ # Rename VRF to a new name
+ if vrf_config_lines:
+ for vrf_value_path in vrf_config_lines:
+ config.set(vrf_value_path, vrf_name_new, replace=True)