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

(cherry picked from commit 26740a8d583f64dc0a27b59dd4ae303056972c0b)

1 files changed, 12 insertions, 30 deletions

diff --git a/src/migration-scripts/interfaces/6-to-7 b/src/migration-scripts/interfaces/6-to-7
index 49b853d90..e60121eec 100755..100644
--- a/src/migration-scripts/interfaces/6-to-7
+++ b/src/migration-scripts/interfaces/6-to-7
@@ -1,39 +1,28 @@
-#!/usr/bin/env python3
+# Copyright 2020-2024 VyOS maintainers and contributors <maintainers@vyos.io>
 #
-# Copyright (C) 2020 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/>.
 
 # Remove network provider name from CLI and rather use provider APN from CLI
 
-import sys
 from vyos.configtree import ConfigTree
 
-if __name__ == '__main__':
-    if len(sys.argv) < 2:
-        print("Must specify file name!")
-        exit(1)
-
-    file_name = sys.argv[1]
-    with open(file_name, 'r') as f:
-        config_file = f.read()
-
-    config = ConfigTree(config_file)
+def migrate(config: ConfigTree) -> None:
     base = ['interfaces', 'wirelessmodem']
 
     if not config.exists(base):
         # Nothing to do
-        sys.exit(0)
+        return
 
     # list all individual wwan/wireless modem interfaces
     for i in config.list_nodes(base):
@@ -54,10 +43,3 @@ if __name__ == '__main__':
         # uniform CLI experience
         if config.exists(iface + ['no-dns']):
             config.rename(iface + ['no-dns'], 'no-peer-dns')
-
-    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)