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#!/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.
#
import optparse
from qpid.messaging import *
from qpid.util import URL
from qpid.log import enable, DEBUG, WARN
parser = optparse.OptionParser(usage="usage: %prog [options] ADDRESS ...",
description="Drain messages from the supplied address.")
parser.add_option("-b", "--broker", default="localhost",
help="connect to specified BROKER (default %default)")
parser.add_option("-c", "--count", type="int",
help="number of messages to drain")
parser.add_option("-f", "--forever", action="store_true",
help="ignore timeout and wait forever")
parser.add_option("-r", "--reconnect", action="store_true",
help="enable auto reconnect")
parser.add_option("-i", "--reconnect-interval", type="float", default=3,
help="interval between reconnect attempts")
parser.add_option("-l", "--reconnect-limit", type="int",
help="maximum number of reconnect attempts")
parser.add_option("-t", "--timeout", type="float", default=0,
help="timeout in seconds to wait before exiting (default %default)")
parser.add_option("-p", "--print", dest="format", default="%(M)s",
help="format string for printing messages (default %default)")
parser.add_option("-v", dest="verbose", action="store_true",
help="enable logging")
opts, args = parser.parse_args()
if opts.verbose:
enable("qpid", DEBUG)
else:
enable("qpid", WARN)
if args:
addr = args.pop(0)
else:
parser.error("address is required")
if opts.forever:
timeout = None
else:
timeout = opts.timeout
class Formatter:
def __init__(self, message):
self.message = message
self.environ = {"M": self.message,
"P": self.message.properties,
"C": self.message.content}
def __getitem__(self, st):
return eval(st, self.environ)
conn = Connection(opts.broker,
reconnect=opts.reconnect,
reconnect_interval=opts.reconnect_interval,
reconnect_limit=opts.reconnect_limit)
try:
conn.open()
ssn = conn.session()
rcv = ssn.receiver(addr)
count = 0
while not opts.count or count < opts.count:
try:
msg = rcv.fetch(timeout=timeout)
print opts.format % Formatter(msg)
count += 1
ssn.acknowledge()
except Empty:
break
except ReceiverError, e:
print e
except KeyboardInterrupt:
pass
conn.close()
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