migration: T6007: convert all migration scripts to load as module

(cherry picked from commit 26740a8d583f64dc0a27b59dd4ae303056972c0b)

1 files changed, 23 insertions, 41 deletions

diff --git a/src/migration-scripts/interfaces/31-to-32 b/src/migration-scripts/interfaces/31-to-32
index 0fc27b70a..24077ed24 100755..100644
--- a/src/migration-scripts/interfaces/31-to-32
+++ b/src/migration-scripts/interfaces/31-to-32
@@ -1,55 +1,37 @@
-#!/usr/bin/env python3
+# Copyright 2023-2024 VyOS maintainers and contributors <maintainers@vyos.io>
 #
-# Copyright (C) 2023 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.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# 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 Lesser General Public License
+# along with this library.  If not, see <http://www.gnu.org/licenses/>.
+
 # T5671: change port to IANA assigned default port
 # T5759: change default MTU 1450 -> 1500
 
-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 = ['interfaces', 'vxlan']
 
-config = ConfigTree(config_file)
-if not config.exists(base):
-    # Nothing to do
-    exit(0)
-
-for vxlan in config.list_nodes(base):
-    if config.exists(base + [vxlan, 'external']):
-        config.delete(base + [vxlan, 'external'])
-        config.set(base + [vxlan, 'parameters', 'external'])
+def migrate(config: ConfigTree) -> None:
+    if not config.exists(base):
+        # Nothing to do
+        return
 
-    if not config.exists(base + [vxlan, 'port']):
-        config.set(base + [vxlan, 'port'], value='8472')
+    for vxlan in config.list_nodes(base):
+        if config.exists(base + [vxlan, 'external']):
+            config.delete(base + [vxlan, 'external'])
+            config.set(base + [vxlan, 'parameters', 'external'])
 
-    if not config.exists(base + [vxlan, 'mtu']):
-        config.set(base + [vxlan, 'mtu'], value='1450')
+        if not config.exists(base + [vxlan, 'port']):
+            config.set(base + [vxlan, 'port'], value='8472')
 
-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)
+        if not config.exists(base + [vxlan, 'mtu']):
+            config.set(base + [vxlan, 'mtu'], value='1450')