fix: improve error management when decoding uplink messages

app/consumer/src/adapters/mqtt.py

@@ -8,6 +8,7 @@ from paho.mqtt.enums import CallbackAPIVersion
 from paho.mqtt.properties import Properties
 from paho.mqtt.reasoncodes import ReasonCode
 
+from exceptions import MessageBrokerError, InfrastructureError
 from entities import UplinkEvent
 from ports import MessageBroker
 
@@ -36,15 +37,29 @@ class PahoMqttBroker(MessageBroker):
         def _on_message(client: mqtt.Client, userdata: None, msg: mqtt.MQTTMessage) -> None:
             try:
                 body = json.loads(msg.payload)
+            except json.JSONDecodeError as e:
+                log.error("Payload JSON invalide sur %s : %s", msg.topic, e)
+                return
+
+            try:
                 dev_eui = body["deviceInfo"]["devEui"]
                 pulse_count = int(body["object"]["pulse_count"])
-
+            except (KeyError, ValueError, TypeError) as e:
+                log.error("Champs manquants ou invalides : %s | body=%s", e, body)
+                return
+            
+            try:
                 on_uplink(UplinkEvent(dev_eui=dev_eui, pulse_count=pulse_count))
-            except Exception as e:
-                log.exception("Erreur parsing message MQTT : %s", e)
+            except InfrastructureError as e:
+                log.error("Erreur infrastructure pour %s : %s", dev_eui, e)
 
         _client.on_connect = _on_connect
         _client.on_message = _on_message
         _client.reconnect_delay_set(min_delay=1, max_delay=30)
-        _client.connect(self._host, self._port, keepalive=60)
+
+        try:
+            _client.connect(self._host, self._port, keepalive=60)
+        except OSError as e:
+            raise MessageBrokerError(f"Impossible de joindre {self._host}:{self._port} : {e}") from e
+        
         _client.loop_forever()