| #!/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 |
| |
| |
| |