python-awips/awips/test/testQpidTimeToLive.py

#
#
#
#
#
#     SOFTWARE HISTORY
#
#    Date            Ticket#       Engineer       Description
#    ------------    ----------    -----------    --------------------------
#    03/09/11                      njensen       Initial Creation.
#    08/15/13        2169          bkowal        Decompress data read from the queue
#
#
#

import time, sys
import threading

import dynamicserialize

TIME_TO_SLEEP = 300

class ListenThread(threading.Thread):

    def __init__(self, hostname, portNumber, topicName):
        self.hostname = hostname
        self.portNumber = portNumber
        self.topicName = topicName
        self.nMessagesReceived = 0
        self.waitSecond = 0
        self.stopped = False
        threading.Thread.__init__(self)

    def run(self):
        from awips import QpidSubscriber
        self.qs = QpidSubscriber.QpidSubscriber(self.hostname, self.portNumber, True)
        self.qs.topicSubscribe(self.topicName, self.receivedMessage)

    def receivedMessage(self, msg):
        print("Received message")
        self.nMessagesReceived += 1
        if self.waitSecond == 0:
            fmsg = open('/tmp/rawMessage', 'w')
            fmsg.write(msg)
            fmsg.close()

        while self.waitSecond < TIME_TO_SLEEP and not self.stopped:
            if self.waitSecond % 60 == 0:
                print(time.strftime('%H:%M:%S'), "Sleeping and stuck in not so infinite while loop")
            self.waitSecond += 1
            time.sleep(1)

        print(time.strftime('%H:%M:%S'), "Received", self.nMessagesReceived, "messages")

    def stop(self):
        print("Stopping")
        self.stopped = True
        self.qs.close()



def main():
    print("Starting up at", time.strftime('%H:%M:%S'))

    topic = 'edex.alerts'
    host = 'localhost'
    port = 5672

    thread = ListenThread(host, port, topic)
    try:
        thread.start()
        while True:
            time.sleep(3)
    except KeyboardInterrupt:
        pass
    finally:
        thread.stop()


if __name__ == '__main__':
    main()