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

1 files changed, 28 insertions, 46 deletions

diff --git a/src/migration-scripts/system/19-to-20 b/src/migration-scripts/system/19-to-20
index 177173c50..cb84e11fc 100755..100644
--- a/src/migration-scripts/system/19-to-20
+++ b/src/migration-scripts/system/19-to-20
@@ -1,62 +1,44 @@
-#!/usr/bin/env python3
+# Copyright 2020-2024 VyOS maintainers and contributors <maintainers@vyos.io>
 #
-# Copyright (C) 2020-2024 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/>.
 
 # T3048: remove smp-affinity node from ethernet and use tuned instead
 
-from sys import exit, argv
 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 = ['system', 'options']
 base_new = ['system', 'option']
-config = ConfigTree(config_file)
-
-if not config.exists(base):
-    # Nothing to do
-    exit(0)
-
-if config.exists(base_new):
-    for node in config.list_nodes(base):
-        config.copy(base + [node], base_new + [node])
-else:
-    config.copy(base, base_new)
 
-config.delete(base)
+def migrate(config: ConfigTree) -> None:
+    if not config.exists(base):
+        # Nothing to do
+        return
 
-# Rename "system option beep-if-fully-booted" -> "system option startup-beep"
-base_beep = base_new + ['beep-if-fully-booted']
-if config.exists(base_beep):
-    config.rename(base_beep, 'startup-beep')
+    if config.exists(base_new):
+        for node in config.list_nodes(base):
+            config.copy(base + [node], base_new + [node])
+    else:
+        config.copy(base, base_new)
 
-# Rename "system option ctrl-alt-del-action" -> "system option ctrl-alt-delete"
-base_ctrl_alt_del = base_new + ['ctrl-alt-del-action']
-if config.exists(base_ctrl_alt_del):
-    config.rename(base_ctrl_alt_del, 'ctrl-alt-delete')
+    config.delete(base)
 
+    # Rename "system option beep-if-fully-booted" -> "system option startup-beep"
+    base_beep = base_new + ['beep-if-fully-booted']
+    if config.exists(base_beep):
+        config.rename(base_beep, 'startup-beep')
 
-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)
+    # Rename "system option ctrl-alt-del-action" -> "system option ctrl-alt-delete"
+    base_ctrl_alt_del = base_new + ['ctrl-alt-del-action']
+    if config.exists(base_ctrl_alt_del):
+        config.rename(base_ctrl_alt_del, 'ctrl-alt-delete')