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/dhcp-relay/1-to-2 b/src/migration-scripts/dhcp-relay/1-to-2
index 508bac6be..54cd8d6c0 100755..100644
--- a/src/migration-scripts/dhcp-relay/1-to-2
+++ b/src/migration-scripts/dhcp-relay/1-to-2
@@ -1,35 +1,29 @@
-#!/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/>.
 
 # Delete "set service dhcp-relay relay-options port" option
 # Delete "set service dhcpv6-relay listen-port" option
 
-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(['service', 'dhcp-relay', 'relay-options', 'port']) or config.exists(['service', 'dhcpv6-relay', 'listen-port'])):
+        # Nothing to do
+        return
 
-config = ConfigTree(config_file)
-
-if not (config.exists(['service', 'dhcp-relay', 'relay-options', 'port']) or config.exists(['service', 'dhcpv6-relay', 'listen-port'])):
-    # Nothing to do
-    sys.exit(0)
-else:
     # Delete abandoned node
     config.delete(['service', 'dhcp-relay', 'relay-options', 'port'])
     # Delete abandoned node
     config.delete(['service', 'dhcpv6-relay', 'listen-port'])
-
-    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)