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"""
Shared utility functions for the vyos.rest collection.
"""
from __future__ import absolute_import, division, print_function
__metaclass__ = type
def normalize_to_list(value):
"""Coerce any VyOS config value into a flat Python list.
VyOS returns config data in inconsistent shapes depending on how many
values are present:
- ``None`` -> no config exists -> ``[]``
- ``{}`` -> empty dict (node exists) -> ``[]``
- ``"10.0.0.1"`` -> single string value -> ``["10.0.0.1"]``
- ``["a", "b"]`` -> already a list -> ``["a", "b"]``
- ``{"a": {}, "b": {}}`` -> dict of leaf nodes -> ``["a", "b"]``
Args:
value: Raw value from a VyOS ``showConfig`` response.
Returns:
list: Flat list of string values.
"""
if value is None:
return []
if isinstance(value, list):
return [str(v) for v in value]
if isinstance(value, str):
return [value]
if isinstance(value, dict):
# Keys are the values; dict values are sub-config (ignored here)
return [str(k) for k in value.keys()]
# Fallback: try to convert
return [str(value)]
def normalize_to_dict(value):
"""Coerce a VyOS multi-value node into a dict keyed by value.
Args:
value: Raw value from showConfig (None, str, list, or dict).
Returns:
dict: ``{value: sub_config}`` pairs.
"""
if not value:
return {}
if isinstance(value, dict):
return value
if isinstance(value, list):
return {str(v): {} for v in value}
if isinstance(value, str):
return {value: {}}
return {}
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