refactor(rabbitmq) create exchange and queues with tutorial, and it works

rabbitmq/log_direct.py

@@ -0,0 +1,21 @@
+import sys
+
+import pika
+
+connection = pika.BlockingConnection(
+    pika.ConnectionParameters(host="localhost"),
+)
+channel = connection.channel()
+
+channel.exchange_declare(exchange="direct_logs", exchange_type="direct")
+
+severity = sys.argv[1] if len(sys.argv) > 2 else "info"
+message = " ".join(sys.argv[2:]) or "Hello World!"
+channel.basic_publish(
+    exchange="direct_logs",
+    routing_key=severity,
+    body=message,
+)
+print(f" [x] Sent {severity}:{message}")
+
+connection.close()

rabbitmq/receive_log_direct.py

@@ -0,0 +1,52 @@
+import os
+import sys
+
+import pika
+
+
+def main():
+    connection = pika.BlockingConnection(
+        pika.ConnectionParameters(host="localhost"),
+    )
+    channel = connection.channel()
+
+    channel.exchange_declare(exchange="direct_logs", exchange_type="direct")
+
+    result = channel.queue_declare(queue="", exclusive=True)
+    queue_name = result.method.queue
+
+    severities = sys.argv[1:]
+    if not severities:
+        sys.stderr.write("Usage: %s [info] [warning] [error]\n" % sys.argv[0])
+        sys.exit(1)
+
+    for severity in severities:
+        channel.queue_bind(
+            exchange="direct_logs",
+            queue=queue_name,
+            routing_key=severity,
+        )
+
+    print(" [*] Waiting for logs. To exit press CTRL+C")
+
+    def callback(ch, method, properties, body):
+        print(f" [x] {method.routing_key}:{body.decode()}")
+
+    channel.basic_consume(
+        queue=queue_name,
+        on_message_callback=callback,
+        auto_ack=True,
+    )
+
+    channel.start_consuming()
+
+
+if __name__ == "__main__":
+    try:
+        main()
+    except KeyboardInterrupt:
+        print("Interrupted")
+        try:
+            sys.exit(0)
+        except SystemExit:
+            os._exit(0)