"""
VRF utility functions for extracting non-default VRF names from gNMI responses.
"""
from typing import List, Union
from src.schemas.models import Device
from src.gnmi.client import get_gnmi_data
from src.gnmi.parameters import GnmiRequest
from src.schemas.responses import (
ErrorResponse,
SuccessResponse,
FeatureNotFoundResponse,
)
DEFAULT_INTERNAL_VRFS = ["default", "**iid"]
def get_non_default_vrf_names(
device: Device,
) -> Union[List[str], ErrorResponse, FeatureNotFoundResponse]:
"""
Get non-default VRF names from a network device.
Returns a list of VRF names (strings) that are not in DEFAULT_INTERNAL_VRFS,
or an ErrorResponse/FeatureNotFoundResponse if the gNMI operation failed.
"""
vrf_names_request = GnmiRequest(
path=[
"openconfig-network-instance:network-instances/network-instance[name=*]/state/name",
],
)
response = get_gnmi_data(device, vrf_names_request)
# Return ErrorResponse or FeatureNotFoundResponse directly to caller
if isinstance(response, ErrorResponse):
return response
if isinstance(response, FeatureNotFoundResponse):
return response
vrf_names = []
# Only process if we have a successful response
if isinstance(response, SuccessResponse):
# Work directly with response data
if response.data:
response_data = response.data
else:
response_data = []
if isinstance(response_data, list):
for item in response_data:
if isinstance(item, dict) and "val" in item:
val = item.get("val")
if (
val
and isinstance(val, str)
and val.lower()
not in [vrf.lower() for vrf in DEFAULT_INTERNAL_VRFS]
):
vrf_names.append(val)
return vrf_names
