Python-RabbitMQ-direct（广播模式）

direct绑定模式的，选择性接收

生产者：direct_publiser.py

import pika,sys

connection = pika.BlockingConnection(pika.ConnectionParameters("localhost"))

channel = connection.channel()

channel.exchange_declare(exchange='direct_logs',
                         exchange_type='direct')

severity = sys.argv[1] if len(sys.argv) > 1 else 'info' #级别
message = ' '.join(sys.argv[2:]) or 'Hello World!'#消息

channel.basic_publish(exchange='direct_logs',
                      routing_key=severity,
                      body=message)
print(' [x] Sent %r:%r' % (severity, message))
connection.close()

 消费者：direct_consumer.py

import pika,sys

connection = pika.BlockingConnection(pika.ConnectionParameters("localhost"))

channel = connection.channel()

channel.exchange_declare(exchange='direct_logs',
                         exchange_type='direct')

result = channel.queue_declare(exclusive=True)
queue_name = result.method.queue#获取queue名字


severities = sys.argv[1:]
if not severities:
    sys.stderr.write("Usage: %s [info] [warning] [error]
" % 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("[x] %r:%r" % (method.routing_key, body))

channel.basic_consume(callback,
                      queue=queue_name,
                      no_ack=True)


channel.start_consuming()