Implement DNS caching and verbose logging

wif2ansible/network.py

@@ -1,6 +1,8 @@
 import socket
 from typing import Optional
+from functools import lru_cache
 
+@lru_cache(maxsize=1024)
 def get_hostname(ip: str) -> Optional[str]:
     try:
         # Python's equivalent to Resolv.getname(ip)
@@ -9,6 +11,7 @@ def get_hostname(ip: str) -> Optional[str]:
     except socket.error:
         return None
 
+@lru_cache(maxsize=1024)
 def get_ip(hostname: str) -> Optional[str]:
     try:
         return socket.gethostbyname(hostname)