text: #!/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.
  #
  
  from __future__ import print_function
  import optparse
  from proton.handlers import MessagingHandler
  from proton.reactor import ApplicationEvent, Container, EventInjector
  from db_common import Db
  
  class Recv(MessagingHandler):
      def __init__(self, url, count):
          super(Recv, self).__init__(auto_accept=False)
          self.url = url
          self.delay = 0
          self.last_id = None
          self.expected = count
          self.received = 0
          self.accepted = 0
          self.db = Db("dst_db", EventInjector())
  
      def on_start(self, event):
          event.container.selectable(self.db.injector)
          e = ApplicationEvent("id_loaded")
          e.container = event.container
          self.db.get_id(e)
  
      def on_id_loaded(self, event):
          self.last_id = event.id
          event.container.create_receiver(self.url)
  
      def on_record_inserted(self, event):
          self.accept(event.delivery)
          self.accepted += 1
          if self.accepted == self.expected:
              event.connection.close()
              self.db.close()
  
      def on_message(self, event):
          id = int(event.message.id)
          if (not self.last_id) or id > self.last_id:
              if self.expected == 0 or self.received < self.expected:
                  self.received += 1
                  self.last_id = id
                  self.db.insert(id, event.message.body, ApplicationEvent("record_inserted", delivery=event.delivery))
                  print("inserted message %s" % id)
              else:
                  self.release(event.delivery)
          else:
              self.accept(event.delivery)
  
  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
  
  
  
  