migration: T6007: update run-config-migration script

Author: jestabro

src/helpers/run-config-migrate.py

@@ -0,0 +1,64 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2024 VyOS maintainers and contributors
+#
+# 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,
+# 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.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import os
+import sys
+import time
+from argparse import ArgumentParser
+from shutil import copyfile
+
+from vyos.migrate import ConfigMigrate
+
+parser = ArgumentParser()
+parser.add_argument('config_file', type=str,
+                    help="configuration file to migrate")
+parser.add_argument('--test-script', type=str,
+                    help="test named script")
+parser.add_argument('--output-file', type=str,
+                    help="write to named output file instead of config file")
+parser.add_argument('--force', action='store_true',
+                    help="force run of all migration scripts")
+
+
+args = parser.parse_args()
+
+config_file = args.config_file
+out_file = args.output_file
+test_script = args.test_script
+force = args.force
+
+if not os.access(config_file, os.R_OK):
+    print(f"Config file '{config_file}' not readable")
+    sys.exit(1)
+
+file = out_file if out_file is not None else config_file
+if not os.access(file, os.W_OK):
+    print("File '{file}' not writeable")
+    sys.exit(1)
+
+if out_file is None:
+    timestr = time.strftime("%Y%m%d-%H%M%S")
+    backup = f'{config_file}.{timestr}.pre-migration'
+    copyfile(config_file, backup)
+
+config_migrate = ConfigMigrate(config_file, force=force, output_file=out_file)
+
+if test_script:
+    # run_script and exit
+    config_migrate.run_script(test_script)
+    sys.exit(0)
+
+config_migrate.run()