reverse-proxy: T6409: Remove unused backend parameters

(cherry picked from commit fb6602f431f5595b97ea3726467ec782fa50ceb8)

1 files changed, 48 insertions, 0 deletions

diff --git a/src/migration-scripts/reverse-proxy/0-to-1 b/src/migration-scripts/reverse-proxy/0-to-1
new file mode 100755
index 000000000..62be52ea6
--- /dev/null
+++ b/src/migration-scripts/reverse-proxy/0-to-1
@@ -0,0 +1,48 @@
+#!/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/>.
+
+# T6409: Remove unused 'backend bk-example parameters' node
+
+from sys import argv, exit
+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()
+
+config = ConfigTree(config_file)
+base = ['load-balancing', 'reverse-proxy', 'backend']
+if not config.exists(base):
+    # Nothing to do
+    exit(0)
+else:
+    # we need to run this for every configured network
+    for backend in config.list_nodes(base):
+        param_node = base + [backend, 'parameters']
+        if config.exists(param_node):
+            config.delete(param_node)
+
+    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)