Truncate MQTT payload in debug messages to 8kB (#45465)

homeassistant/components/mqtt/__init__.py

@@ -865,7 +865,7 @@ class MQTT:
             "Received message on %s%s: %s",
             msg.topic,
             " (retained)" if msg.retain else "",
-            msg.payload,
+            msg.payload[0:8192],
         )
         timestamp = dt_util.utcnow()
 
@@ -880,7 +880,7 @@ class MQTT:
                 except (AttributeError, UnicodeDecodeError):
                     _LOGGER.warning(
                         "Can't decode payload %s on %s with encoding %s (for %s)",
-                        msg.payload,
+                        msg.payload[0:8192],
                         msg.topic,
                         subscription.encoding,
                         subscription.job,