rabbitmq_有選擇發(fā)送接收_消息過濾

生產者_procedure_send_有選擇的發(fā)消息

import pika
import sys

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) > 1 else 'info'
message = ' '.join(sys.argv[2:]) or 'Hello World!'
channel.basic_publish(exchange='direct_logs',
                      routing_key=severity,
                      body=message)
print(" [x] Sent %r:%r" % (severity, message))
connection.close()

消費者_consumer_recive_有選擇的接收消息
 import pika
 import sys
 
 connection = pika.BlockingConnection(pika.ConnectionParameters(
     host='localhost'))
 channel = connection.channel()
 
 channel.exchange_declare(exchange='direct_logs',
                          exchange_type='direct')
 
 result = channel.queue_declare(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)
 
 print(severities)
 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()

生產者_procedure_send_更詳細的的過濾發(fā)送
 import pika
 import sys
 
 connection = pika.BlockingConnection(pika.ConnectionParameters(
     host='localhost'))
 channel = connection.channel()
 
 channel.exchange_declare(exchange='topic_logs',
                          exchange_type='topic')
 
 routing_key = sys.argv[1] if len(sys.argv) > 1 else 'anonymous.info'
 message = ' '.join(sys.argv[2:]) or 'Hello World!'
 channel.basic_publish(exchange='topic_logs',
                       routing_key=routing_key,
                       body=message)
 print(" [x] Sent %r:%r" % (routing_key, message))
 connection.close()

消費者_consumer_recive更詳細的過濾接收
 import pika
 import sys
 
 connection = pika.BlockingConnection(pika.ConnectionParameters(
     host='localhost'))
 channel = connection.channel()
 
 channel.exchange_declare(exchange='topic_logs',
                          exchange_type='topic')
 
 result = channel.queue_declare(exclusive=True)
 queue_name = result.method.queue
 
 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(' [*] 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()