T7737: add vyconf aware versions of add/delete_cli_node

Author: jestabro

python/vyos/utils/session.py

@@ -15,6 +15,9 @@
 
 # pylint: disable=import-outside-toplevel
 
+import os
+from inspect import stack
+
 
 def in_config_session():
     """Vyatta bash completion uses the following environment variable for
@@ -23,3 +26,45 @@ def in_config_session():
     from os import environ
 
     return '_OFR_CONFIGURE' in environ
+
+
+# utility for functions below
+def get_caller_name() -> str:
+    filename = stack()[2].filename
+    return os.path.basename(filename)
+
+
+# OOB operations used (rarely) to update the session config during commit
+# execution of config mode scripts.
+# The standard use is for replacing plaintext with encrypted passwords in
+# the session config during commit.
+def delete_cli_node(cli_path: list):
+    from vyos.vyconf_session import VyconfSession
+    from vyos.configsession import ConfigSessionError
+
+    pid = os.environ.get('SESSION_PID', '')
+    if not pid:
+        raise ValueError('Missing env var SESSION_PID')
+
+    script_name = get_caller_name()
+    tag_value = os.environ.get('VYOS_TAGNODE_VALUE', None)
+
+    vs = VyconfSession(pid=pid, on_error=ConfigSessionError)
+    vs.aux_delete(cli_path, script_name, tag_value)
+
+
+def add_cli_node(cli_path: list, value: str = None):
+    from vyos.vyconf_session import VyconfSession
+    from vyos.configsession import ConfigSessionError
+
+    pid = os.environ.get('SESSION_PID', '')
+    if not pid:
+        raise ValueError('Missing env var SESSION_PID')
+
+    script_name = get_caller_name()
+    tag_value = os.environ.get('VYOS_TAGNODE_VALUE', None)
+
+    cli_path = cli_path + [value] if value else cli_path
+
+    vs = VyconfSession(pid=pid, on_error=ConfigSessionError)
+    vs.aux_set(cli_path, script_name, tag_value)