使用AMQ_SCHEDULED_DELAY时，stomp.py不会延迟消息

Question

我正在码头容器上运行ActiveMQ服务器。

我正在使用AMQ_SCHEDULED_DELAY头来延迟消息。

import time
import sys

import stomp

class MyListener(stomp.ConnectionListener):
    def on_error(self, headers, message):
        print('received an error "%s"' % message)
    def on_message(self, headers, message):
        print "Time for message receive: %s", time.strftime('%H:%M:%S')
        print('received a message "%s"' % message)

conn = stomp.Connection()
conn.set_listener('', MyListener())
conn.start()
conn.connect(wait=True)

conn.subscribe(destination='/queue/test', id=1, ack='auto')

print "Time for send message: %s", time.strftime('%H:%M:%S')
conn.send(body=' '.join(sys.argv[1:]), destination='/queue/test', headers={'AMQ_SCHEDULED_DELAY': 100000})

time.sleep(2)
conn.disconnect()

输出：

test@localhost$ python /tmp/test.py this is test
Time for send message: %s 14:03:34
Time for message receive: %s 14:03:34
received a message "this is test"

从输出上看，它似乎不起作用，或者我必须从ActiveMQ端更新一些东西。

Answer 1

通过将broker schedulerSupport属性设置为activemq.xml中的true来启用它：

<broker xmlns="http://activemq.apache.org/schema/core" brokerName="localhost" dataDirectory="${activemq.data}" schedulerSupport="true">  

http://activemq.apache.org/delay-and-schedule-message-delivery.html