| #!/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 sys |
| import threading |
| from proton.reactor import ApplicationEvent, Container, EventInjector |
| from proton.handlers import MessagingHandler, TransactionHandler |
| |
| class TxRecv(MessagingHandler, TransactionHandler): |
| def __init__(self): |
| super(TxRecv, self).__init__(prefetch=0, auto_accept=False) |
| |
| def on_start(self, event): |
| self.container = event.container |
| self.conn = self.container.connect("localhost:5672") |
| self.receiver = self.container.create_receiver(self.conn, "examples") |
| self.container.declare_transaction(self.conn, handler=self, settle_before_discharge=True) |
| self.transaction = None |
| |
| def on_message(self, event): |
| print(event.message.body) |
| self.transaction.accept(event.delivery) |
| |
| def on_transaction_declared(self, event): |
| self.transaction = event.transaction |
| print("transaction declared") |
| |
| def on_transaction_committed(self, event): |
| print("transaction committed") |
| self.container.declare_transaction(self.conn, handler=self) |
| |
| def on_transaction_aborted(self, event): |
| print("transaction aborted") |
| self.container.declare_transaction(self.conn, handler=self) |
| |
| def on_commit(self, event): |
| self.transaction.commit() |
| |
| def on_abort(self, event): |
| self.transaction.abort() |
| |
| def on_fetch(self, event): |
| self.receiver.flow(1) |
| |
| def on_quit(self, event): |
| c = self.receiver.connection |
| self.receiver.close() |
| c.close() |
| |
| try: |
| reactor = Container(TxRecv()) |
| events = EventInjector() |
| reactor.selectable(events) |
| thread = threading.Thread(target=reactor.run) |
| thread.daemon=True |
| thread.start() |
| |
| print("Enter 'fetch', 'commit' or 'abort'") |
| while True: |
| line = sys.stdin.readline() |
| if line: |
| events.trigger(ApplicationEvent(line.strip())) |
| else: |
| break |
| except KeyboardInterrupt: pass |
| |
| |