#!/usr/bin/env python
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# 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
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
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from __future__ import print_function, unicode_literals
import optparse
from proton import Url
from proton.handlers import MessagingHandler
from proton.reactor import Container, LinkOption

class Topic(LinkOption):
    def apply(self, link):
        link.source.capabilities.put_symbol('topic')

class Recv(MessagingHandler):
    def __init__(self, url, id, subscription):
        super(Recv, self).__init__()
        self.url = Url(url)
        self.id = id
        self.subscription = subscription
        self.options = [Topic()]

    def on_start(self, event):
        event.container.container_id = self.id
        event.container.create_receiver(self.url, name=self.subscription, options=self.options)

    def on_message(self, event):
        print(event.message.body)
        event.receiver.close()
        event.session.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("-i", "--id", default="myclient",
                  help="client's connection identifier (default %default)")
parser.add_option("-s", "--subscription", default="mysubscription",
                  help="client's subscription identifier (default %default)")
opts, args = parser.parse_args()

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