/usr/share/proton-0.14.0/examples/python/db_send.py is in libqpid-proton8-dev-examples 0.14.0-5.1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 | #!/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, unicode_literals
import optparse
import time
try:
import Queue
except:
import queue as Queue
from proton import Message
from proton.handlers import MessagingHandler
from proton.reactor import ApplicationEvent, Container, EventInjector
from db_common import Db
class Send(MessagingHandler):
def __init__(self, url, count):
super(Send, self).__init__()
self.url = url
self.delay = 0
self.sent = 0
self.confirmed = 0
self.load_count = 0
self.records = Queue.Queue(maxsize=50)
self.target = count
self.db = Db("src_db", EventInjector())
def keep_sending(self):
return self.target == 0 or self.sent < self.target
def on_start(self, event):
self.container = event.container
self.container.selectable(self.db.injector)
self.sender = self.container.create_sender(self.url)
def on_records_loaded(self, event):
if self.records.empty():
if event.subject == self.load_count:
print("Exhausted available data, waiting to recheck...")
# check for new data after 5 seconds
self.container.schedule(5, self)
else:
self.send()
def request_records(self):
if not self.records.full():
print("loading records...")
self.load_count += 1
self.db.load(self.records, event=ApplicationEvent("records_loaded", link=self.sender, subject=self.load_count))
def on_sendable(self, event):
self.send()
def send(self):
while self.sender.credit and not self.records.empty():
if not self.keep_sending(): return
record = self.records.get(False)
id = record['id']
self.sender.send(Message(id=id, durable=True, body=record['description']), tag=str(id))
self.sent += 1
print("sent message %s" % id)
self.request_records()
def on_settled(self, event):
id = int(event.delivery.tag)
self.db.delete(id)
print("settled message %s" % id)
self.confirmed += 1
if self.confirmed == self.target:
event.connection.close()
self.db.close()
def on_disconnected(self, event):
self.db.reset()
self.sent = self.confirmed
def on_timer_task(self, event):
print("Rechecking for data...")
self.request_records()
parser = optparse.OptionParser(usage="usage: %prog [options]",
description="Send messages to the supplied address.")
parser.add_option("-a", "--address", default="localhost:5672/examples",
help="address to which messages are sent (default %default)")
parser.add_option("-m", "--messages", type="int", default=0,
help="number of messages to send; 0 sends indefinitely (default %default)")
opts, args = parser.parse_args()
try:
Container(Send(opts.address, opts.messages)).run()
except KeyboardInterrupt: pass
|