python/examples/selected_recv.py

#!/usr/bin/env python
#
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# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
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from __future__ import print_function, unicode_literals
import optparse
from proton import Url
from proton.reactor import Container, Selector
from proton.handlers import MessagingHandler

class Recv(MessagingHandler):
    def __init__(self, url, count):
        super(Recv, self).__init__()
        self.url = Url(url)
        self.expected = count
        self.received = 0

    def on_start(self, event):
        conn = event.container.connect(self.url)
        event.container.create_receiver(conn, self.url.path, options=Selector("colour = 'green'"))

    def on_message(self, event):
        print(event.message.body)
        self.received += 1
        if self.received == self.expected:
            event.receiver.close()
            event.connection.close()

parser = optparse.OptionParser(usage="usage: %prog [options]")
parser.add_option("-a", "--address", default="localhost:5672/examples",
                  help="address from which messages are received (default %default)")
parser.add_option("-m", "--messages", type="int", default=0,
                  help="number of messages to receive; 0 receives indefinitely (default %default)")
opts, args = parser.parse_args()

try:
    Container(Recv(opts.address, opts.messages)).run()
except KeyboardInterrupt: pass