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

(cherry picked from commit 26740a8d583f64dc0a27b59dd4ae303056972c0b)

1 files changed, 18 insertions, 24 deletions

diff --git a/src/migration-scripts/system/7-to-8 b/src/migration-scripts/system/7-to-8
index 5d084d2bf..64dd4dc93 100755..100644
--- a/src/migration-scripts/system/7-to-8
+++ b/src/migration-scripts/system/7-to-8
@@ -1,26 +1,27 @@
-#!/usr/bin/env python3
+# Copyright 2018-2024 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/>.
 
 # Converts "system gateway-address" option to "protocols static route 0.0.0.0/0 next-hop $gw"
 
-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()
+def migrate(config: ConfigTree) -> None:
+    if not config.exists(['system', 'gateway-address']):
+        # Nothing to do
+        return
 
-config = ConfigTree(config_file)
-
-if not config.exists(['system', 'gateway-address']):
-    # Nothing to do
-    sys.exit(0)
-else:
     # Save the address
     gw = config.return_value(['system', 'gateway-address'])
 
@@ -36,10 +37,3 @@ else:
     # They must be formatted as such to load correctly.
     config.set_tag(['protocols', 'static', 'route'])
     config.set_tag(['protocols', 'static', 'route', '0.0.0.0/0', 'next-hop'])
-
-    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)