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

(cherry picked from commit 26740a8d583f64dc0a27b59dd4ae303056972c0b)

2 files changed, 33 insertions, 69 deletions

diff --git a/src/migration-scripts/lldp/0-to-1 b/src/migration-scripts/lldp/0-to-1
index a99356062..c16e7e84b 100755..100644
--- a/src/migration-scripts/lldp/0-to-1
+++ b/src/migration-scripts/lldp/0-to-1
@@ -1,49 +1,31 @@
-#!/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/>.
 
 # Delete "set service lldp interface <interface> location civic-based" option
 # as it was broken most of the time anyways
 
-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]
+base = ['service', 'lldp', 'interface']
 
-with open(file_name, 'r') as f:
-    config_file = f.read()
+def migrate(config: ConfigTree) -> None:
+    if not config.exists(base):
+        # Nothing to do
+        return
 
-config = ConfigTree(config_file)
-base = ['service', 'lldp', 'interface']
-if not config.exists(base):
-    # Nothing to do
-    sys.exit(0)
-else:
     # Delete nodes with abandoned CLI syntax
     for interface in config.list_nodes(base):
         if config.exists(base + [interface, 'location', 'civic-based']):
             config.delete(base + [interface, 'location', 'civic-based'])
-
-    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)
diff --git a/src/migration-scripts/lldp/1-to-2 b/src/migration-scripts/lldp/1-to-2
index 35efb25db..7f233a725 100755..100644
--- a/src/migration-scripts/lldp/1-to-2
+++ b/src/migration-scripts/lldp/1-to-2
@@ -1,48 +1,30 @@
-#!/usr/bin/env python3
+# Copyright 2023-2024 VyOS maintainers and contributors <maintainers@vyos.io>
 #
-# Copyright (C) 2023 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/>.
 
 # T5855: migrate "set service lldp snmp enable" -> `set service lldp snmp"
 
-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 = ['service', 'lldp']
-if not config.exists(base):
-    # Nothing to do
-    sys.exit(0)
 
-if config.exists(base + ['snmp']):
-    enabled = config.exists(base + ['snmp', 'enable'])
-    config.delete(base + ['snmp'])
-    if enabled: config.set(base + ['snmp'])
+def migrate(config: ConfigTree) -> None:
+    if not config.exists(base):
+        # Nothing to do
+        return
 
-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)
+    if config.exists(base + ['snmp']):
+        enabled = config.exists(base + ['snmp', 'enable'])
+        config.delete(base + ['snmp'])
+        if enabled: config.set(base + ['snmp'])