Improve logging, disable relays on exit

main.py

@@ -1,3 +1,10 @@
+import os
+import logging
+logging.basicConfig(
+        format='[%(asctime)s] %(levelname)s %(module)s/%(funcName)s - %(message)s',
+        level=logging.DEBUG if os.environ.get('DEBUG') else logging.INFO)
+logging.getLogger('aiohttp').setLevel(logging.DEBUG if os.environ.get('DEBUG') else logging.WARNING)
+
 import os
 import sys
 import asyncio
@@ -10,9 +17,6 @@ import settings
 
 from pyunifiprotect.unifi_protect_server import UpvServer
 
-import logging
-logger = logging.getLogger(__name__)
-
 RELAY_ON = False
 RELAY_OFF = True
 
@@ -23,14 +27,14 @@ def ring_bell(mac):
         time.sleep(0.5)
         GPIO.output(doorbell['gpio'], RELAY_OFF)
     except KeyError:
-        logger.error('Doorbell %s not found!', mac)
+        logging.error('Doorbell %s not found!', mac)
 
 def subscriber(updated):
-    logger.debug('Subscription: updated=%s', updated)
+    logging.debug('Subscription: updated=%s', updated)
 
     for _, data in updated.items():
         if data['event_type'] == 'ring' and data['event_ring_on']:
-            logger.info('%s: %s is ringing!', data['mac'], data['name'])
+            logging.info('%s: %s is ringing!', data['mac'], data['name'])
             ring_bell(data['mac'])
 
 async def ws_listener():
@@ -55,16 +59,29 @@ async def ws_listener():
     await session.close()
     unsub()
 
-def init_relays():
+def disable_relays_on_exit(*args):
+    logging.info('Exiting, disabling relays...')
+    for _, doorbell in settings.DOORBELLS.items():
+        GPIO.output(doorbell['gpio'], RELAY_OFF)
+    logging.info('Goodbye.')
+    os._exit(0)
+
+def init():
     GPIO.setmode(GPIO.BCM)
     GPIO.setwarnings(False)
 
     for _, doorbell in settings.DOORBELLS.items():
         GPIO.setup(doorbell['gpio'], GPIO.OUT)
         GPIO.output(doorbell['gpio'], RELAY_OFF)
+    logging.info('GPIO initialized')
+
+    for sig in (SIGABRT, SIGILL, SIGINT, SIGSEGV, SIGTERM):
+        signal(sig, disable_relays_on_exit)
+    logging.info('Signals initialized')
 
 if __name__ == '__main__':
-    logging.basicConfig(level=logging.INFO)
+    init()
+
     loop = asyncio.get_event_loop()
     loop.run_until_complete(ws_listener())
     loop.close()