refactor and rewrite for asyncio

hbd/config.py

@@ -1,4 +1,5 @@
 """Configuration loader and defaults for hbd."""
+import logging
 import os
 
 try:
@@ -14,6 +15,8 @@ DEFAULTS = {
     "logfile": "/var/log/heartbeat.log",
     "logfmt": "text",
     "pushsrv": "pushover",
+    "pushover_token": "",
+    "pushover_user": "",
     "interval": 20,
     "grace": 2,
     "dyndomains": ["wrede.org"],
@@ -40,14 +43,13 @@ def load_config(path=None):
     if os.path.exists(path):
         if yaml:
             with open(path) as fh:
-                data = yaml.safe_load(fh) or {}
+                data = yaml.safe_load(fh) 
             # only keep known keys
             for k, v in data.items():
                 if k in cfg:
                     cfg[k] = v
                 else:
-                    # ignore unknown keys for now
-                    pass
+                    logging.warning("unknown config key %s in %s", k, path)
         else:
             # yaml not installed: do not attempt to parse; user must ensure defaults
             pass