Logs via logging library

src/technitium-ddns.py

@@ -29,6 +29,7 @@ import os
 import sys
 import time
 import socket
+import logging
 from typing import Optional, Tuple, Dict, Any
 
 import requests
@@ -200,24 +201,24 @@ def update_once() -> Dict[str, Any]:
 
 def pretty_print(result: Dict[str, Any]):
     from pprint import pformat
-    print(pformat(result))
+    logging.info(pformat(result))
 
 def main():
-    print(f"Starting updater for {FULL_DOMAIN} (zone {ZONE}) backend={BACKEND}")
+    logging.info(f"Starting updater for {FULL_DOMAIN} (zone {ZONE}) backend={BACKEND}")
     if BACKEND not in ("HTTP_API", "RFC2136"):
-        print("ERROR: BACKEND must be HTTP_API or RFC2136", file=sys.stderr)
+        logging.error("BACKEND must be HTTP_API or RFC2136", file=sys.stderr)
         sys.exit(2)
     if BACKEND == "HTTP_API" and not TDNS_API_TOKEN:
-        print("ERROR: TDNS_API_TOKEN required for HTTP_API backend", file=sys.stderr)
+        logging.error("TDNS_API_TOKEN required for HTTP_API backend", file=sys.stderr)
         sys.exit(2)
     if BACKEND == "RFC2136" and not RFC2136_SERVER:
-        print("ERROR: RFC2136_SERVER required for RFC2136 backend", file=sys.stderr)
+        logging.error("RFC2136_SERVER required for RFC2136 backend", file=sys.stderr)
         sys.exit(2)
     if not ZONE:
-        print("ERROR: ZONE not defined", file=sys.stderr)
+        logging.error("ZONE not defined", file=sys.stderr)
         sys.exit(2)
     if not RECORD_NAME:
-        print("ERROR: RECORD_NAME not defined", file=sys.stderr)
+        logging.error("RECORD_NAME not defined", file=sys.stderr)
         sys.exit(2)
 
     while True: