create src module for source code

src/utils/message_receiver.py

@@ -0,0 +1,22 @@
+import threading
+
+from params import rabittmq_connection
+
+APPOINTMENT_QUEUE = "APPOINTMENT_QUEUE"
+
+
+class MessageReceiver:
+
+    def start_listener(self, callback):
+        t = threading.Thread(target=self._run, args=(callback,))
+        t.start()
+
+    def _run(self, callback):
+
+        channel = rabittmq_connection.channel()
+        channel.queue_declare(queue=APPOINTMENT_QUEUE)
+        channel.basic_consume(queue=APPOINTMENT_QUEUE,
+                              auto_ack=True,
+                              on_message_callback=callback)
+        print(' [*] Waiting for messages. To exit press CTRL+C')
+        channel.start_consuming()