Show error icon if an exception occurs during event handling (#8)

config.example.yml

@@ -10,6 +10,7 @@ openhab_slider_null_command: 0                    # Command that should be sent
 rotation_icon: 2-digit-angular                    # Accepted values: 2-digit-angular, 2-digit-curved, circle
 rotation_icon_leading_zero: false                 # Only valid for digit rotation icons: Defines whether there is a leading zero for 1-digit numbers.
 rotation_sensitivity: 1.0                         # Defines the number revolutions the wheel needs to reach 100%.
+error_icon: "errorExclamationMark"                # The icon shown on the Nuimo if an error occurs during event handling. Recommended values: errorExclamationMark, errorX, errorSmiley
 
 log_file: "nuimo-openhab.log"
 log_level: INFO

nuimo_menue/listener.py

@@ -20,8 +20,12 @@ def __init__(self, nuimoMenue: NuimoMenue):
         self.rawEventHandler = ButtonRawEventHandler()
 
     def received_gesture_event(self, event):
-        self.handle_gesture_event(event)
-        self.handle_extra_events(event)
+        try:
+            self.handle_gesture_event(event)
+            self.handle_extra_events(event)
+        except Exception as error:
+            self.show_error_icon()
+            raise error
 
     def handle_extra_events(self, event):
         extra_event = self.rawEventHandler.get_highlevel_event(event.gesture)
@@ -72,6 +76,9 @@ def show_command_icon(self, fqCommand: str):
             else: logging.warning("Icon '"+config["command_icon_mapping"][fqCommand]+"' mapped to command '"+fqCommand+"' does not exist")
         else: logging.warning("No icon mapped to'"+fqCommand+"'")
 
+    def show_error_icon(self):
+        self.nuimoMenue.controller.display_matrix(nuimo.LedMatrix(icons[config["error_icon"]]))
+
     def started_connecting(self):
         logging.info("Connecting...")
 

nuimo_openhab/listener.py

@@ -126,14 +126,11 @@ def handleSliders(self, rotationOffset):
                     self.lastSliderSentTimestamp = currentTimestamp
 
                     self.openhab.req_post("/items/" + widget["item"]["name"], str(newState))
-                except Exception:
-                    newState = 0
-                    logging.error(sys.exc_info())
                 finally:
                     self.reminder = 0
                     if widget["sendFrequency"] != 0:
                         threading.Timer(widget["sendFrequency"]/1000, self.handleSliders, [0]).start()
-                    return self.lastSliderState
+                return self.lastSliderState
 
         return self.calculateNewSliderState(self.lastSliderState, self.reminder)