# filepath: src/parsers/topology_parser.py
#!/usr/bin/env python3
"""
Topology parser module.
Provides functions for extracting interface subnet data for topology discovery.
"""
from typing import List, Dict, Any
import ipaddress
def extract_interface_subnets(
interface_results: List[Dict[str, Any]],
) -> List[Dict[str, Any]]:
"""
Extract interface IP and network information from interface API results.
Args:
interface_results: List of dicts as returned by get_interface_info API (one per device)
Returns:
List of entries with device, interface, ip, and network (CIDR string)
"""
entries: List[Dict[str, Any]] = []
for res in interface_results:
device = res.get("device")
# Support both top-level 'interfaces' and nested 'response'->'interfaces'
if "interfaces" in res:
interfaces = res.get("interfaces", [])
else:
resp = res.get("response", {})
interfaces = resp.get("interfaces", [])
for iface in interfaces:
ip_addr = iface.get("ip_address")
name = (
iface.get("name")
or iface.get("interface")
or iface.get("name")
)
if not ip_addr or not device or not name:
continue
# Convert "100.103.104.104/255.255.255.0" to "100.103.104.104/24"
try:
ip, mask = ip_addr.split("/")
network = str(
ipaddress.IPv4Network(f"{ip}/{mask}", strict=False)
)
except Exception:
continue
entries.append(
{
"device": device,
"interface": name,
"ip": ip,
"network": network,
}
)
return entries
