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

(cherry picked from commit 26740a8d583f64dc0a27b59dd4ae303056972c0b)

1 files changed, 19 insertions, 23 deletions

diff --git a/src/migration-scripts/interfaces/3-to-4 b/src/migration-scripts/interfaces/3-to-4
index c7fd7d01d..4e56200e1 100755..100644
--- a/src/migration-scripts/interfaces/3-to-4
+++ b/src/migration-scripts/interfaces/3-to-4
@@ -1,27 +1,30 @@
-#!/usr/bin/env python3
+# Copyright 2019-2024 VyOS maintainers and contributors <maintainers@vyos.io>
+#
+# 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 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
+# 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/>.
 
 # Change syntax of wireless interfaces
 # Migrate boolean nodes to valueless
 
-import sys
 from vyos.configtree import ConfigTree
 
-if len(sys.argv) < 2:
-    print("Must specify file name!")
-    sys.exit(1)
-
-file_name = sys.argv[1]
-
-with open(file_name, 'r') as f:
-    config_file = f.read()
-
-config = ConfigTree(config_file)
 base = ['interfaces', 'wireless']
 
-if not config.exists(base):
-    # Nothing to do
-    sys.exit(0)
-else:
+def migrate(config: ConfigTree) -> None:
+    if not config.exists(base):
+        # Nothing to do
+        return
+
     for wifi in config.list_nodes(base):
         # as converting a node to bool is always the same, we can script it
         to_bool_nodes = ['capabilities ht 40MHz-incapable',
@@ -88,10 +91,3 @@ else:
 
             # delete old radius-server nodes
             config.delete(base + [wifi, 'security', 'wpa', 'radius-server'])
-
-    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)