Improved logging mechanism (and a few minor goodies) (#54)

* Improved logging mechanism

* Allow for suppression of any errors regarding failed device updates

workers/mithermometer.py

@@ -1,31 +1,37 @@
-from interruptingcow import timeout
+import logging
+
 from mqtt import MqttMessage
+
 from workers.base import BaseWorker
+import logger
 
 REQUIREMENTS = ['mithermometer==0.1.2']
-
 monitoredAttrs = ["temperature", "humidity", "battery"]
+_LOGGER = logger.get(__name__)
+
 
 class MithermometerWorker(BaseWorker):
   def _setup(self):
     from mithermometer.mithermometer_poller import MiThermometerPoller
     from btlewrap.bluepy import BluepyBackend
 
-
+    _LOGGER.info("Adding %d %s devices", len(self.devices), repr(self))
     for name, mac in self.devices.items():
+      _LOGGER.debug("Adding %s device '%s' (%s)", repr(self), name, mac)
       self.devices[name] = MiThermometerPoller(mac, BluepyBackend)
 
   def status_update(self):
+    from btlewrap.base import BluetoothBackendException
+    _LOGGER.info("Updating %d %s devices", len(self.devices), repr(self))
     ret = []
     for name, poller in self.devices.items():
+      _LOGGER.debug("Updating %s device '%s' (%s)", repr(self), name, poller._mac)
       try:
         ret += self.update_device_state(name, poller)
-      except RuntimeError:
-        pass
-
+      except BluetoothBackendException as e:
+        logger.log_exception(_LOGGER, "Error during update of %s device '%s' (%s): %s", repr(self), name, poller._mac, type(e).__name__, suppress=True)
     return ret
 
-  @timeout(8.0)
   def update_device_state(self, name, poller):
     ret = []
     poller.clear_cache()