Add checks for the rabbitmq connection and channel

django_backend/backend/models.py

@@ -69,7 +69,11 @@ class RabbitMQInstance(models.Model):
 
     @property
     def connection(self):
-        if self.rabbitmq_connection is None:
+        if (
+                self.rabbitmq_connection is None
+                or self.rabbitmq_connection.is_closed
+                or self.rabbitmq_connection.is_closing
+        ):
             rabbitmqconnection_properties = pika.ConnectionParameters(
                 host=self.host,
                 ssl=True,
@@ -83,7 +87,11 @@ class RabbitMQInstance(models.Model):
 
     @property
     def channel(self):
-        if self.rabbitmq_channel is None:
+        if (
+                self.rabbitmq_channel is None
+                or self.rabbitmq_channel.is_closed
+                or self.rabbitmq_channel.is_closing
+        ):
             self.rabbitmq_channel = self.connection.channel()
             self.rabbitmq_channel.exchange_declare(
                 exchange=self.exchange,