learn/rabbitmq/02-主题模式(Topic)/consumer_topic.py

# -*- coding: utf-8 -*-
import pika
import sys

user_info = pika.PlainCredentials('user', 'Un2yzriWm7veSDoh')
connection = pika.BlockingConnection(
    pika.ConnectionParameters('rabbitmq.rabbitmq.svc.cluster.local', 5672, '/', user_info)
)
channel = connection.channel()

# 1. 声明同一个 topic 交换机
channel.exchange_declare(exchange='topic_logs', exchange_type='topic')

# 2. 创建临时队列
result = channel.queue_declare(queue='', exclusive=True)
queue_name = result.method.queue

# 3. 从命令行读取要监听的 pattern（可多个）
binding_keys = sys.argv[1:]
if not binding_keys:
    sys.stderr.write("Usage: %s [binding_key]...\n" % sys.argv[0])
    sys.exit(1)

for binding_key in binding_keys:
    channel.queue_bind(exchange='topic_logs', queue=queue_name, routing_key=binding_key)
    print(f" [*] Queue bound with pattern: {binding_key}")

print(' [*] Waiting for logs. To exit press CTRL+C')

# 4. 回调
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()