Only log debug messages when enabled

amqtt/broker.py

@@ -909,6 +909,7 @@ class Broker:
     async def _run_broadcast(self, running_tasks: deque):
         broadcast = await self._broadcast_queue.get()
 
+        if self.logger.isEnabledFor(logging.DEBUG):
             self.logger.debug("broadcasting %r", broadcast)
 
         for k_filter in self._subscriptions:
@@ -934,6 +935,7 @@ class Broker:
                     await self._retain_broadcast_message(broadcast, qos, target_session)
                     continue
 
+                if self.logger.isEnabledFor(logging.DEBUG):
                     self.logger.debug(
                         "broadcasting application message from %s on topic '%s' to %s"
                         % (
@@ -942,6 +944,7 @@ class Broker:
                             format_client_message(session=target_session),
                         )
                     )
+
                 handler = self._get_handler(target_session)
                 task = asyncio.ensure_future(
                     handler.mqtt_publish(
@@ -954,12 +957,14 @@ class Broker:
                 running_tasks.append(task)
 
     async def _retain_broadcast_message(self, broadcast, qos, target_session):
+        if self.logger.isEnabledFor(logging.DEBUG):
             self.logger.debug(
                 "retaining application message from %s on topic '%s' to client '%s'",
                 format_client_message(session=broadcast["session"]),
                 broadcast["topic"],
                 format_client_message(session=target_session),
             )
+
         retained_message = RetainedApplicationMessage(
             broadcast["session"],
             broadcast["topic"],
@@ -967,6 +972,8 @@ class Broker:
             qos,
         )
         await target_session.retained_messages.put(retained_message)
+
+        if self.logger.isEnabledFor(logging.DEBUG):
             self.logger.debug(
                 "target_session.retained_messages=%s",
                 target_session.retained_messages.qsize(),