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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, sys, traceback
from qpid.messaging import *
from qpid.util import URL
from subprocess import Popen, STDOUT, PIPE
from qpid.log import enable, DEBUG, WARN
parser = optparse.OptionParser(usage="usage: %prog [options] ADDRESS ...",
description="handle requests from the supplied address.")
parser.add_option("-b", "--broker", default="localhost",
help="connect to specified BROKER (default %default)")
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("-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")
conn = Connection(opts.broker,
reconnect=opts.reconnect,
reconnect_interval=opts.reconnect_interval,
reconnect_limit=opts.reconnect_limit)
def dispatch(msg):
msg_type = msg.properties.get("type")
if msg_type == "shell":
proc = Popen(msg.content, shell=True, stderr=STDOUT, stdin=PIPE, stdout=PIPE)
output, _ = proc.communicate()
result = Message(output)
result.properties["exit"] = proc.returncode
elif msg_type == "eval":
try:
content = eval(msg.content)
except:
content = traceback.format_exc()
result = Message(content)
else:
result = Message("unrecognized message type: %s" % msg_type)
return result
try:
conn.open()
ssn = conn.session()
rcv = ssn.receiver(addr)
while True:
msg = rcv.fetch()
response = dispatch(msg)
snd = None
try:
snd = ssn.sender(msg.reply_to)
snd.send(response)
except SendError, e:
print e
if snd is not None:
snd.close()
ssn.acknowledge()
except ReceiveError, e:
print e
except KeyboardInterrupt:
pass
conn.close()
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