Created
May 1, 2014 18:35
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zdrain - Modified qpid drain program
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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 | |
import simplejson as json | |
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 "content-type: [ %s ]" % str(msg.content_type) | |
print "proprties:[ %s ]" % str(msg.properties) | |
if msg.content: | |
body = json.loads(msg.content) | |
entity = None | |
if body['type'] == 'CREATED': | |
# the entities are JSON within JSON. | |
# same is true for oldEntity if available | |
entity = json.loads(body['newEntity']) | |
if body['type'] == 'DELETED': | |
entity = json.loads(body['oldEntity']) | |
#print type(body['newEntity']) | |
print "%s(%s) %s by %s at %s" % (body['target'], entity['id'], body['type'], body['ownerId'], str(body['timestamp'])) | |
print "body - (%s)" % json.dumps(body, sort_keys=True, indent=2) | |
print "=============" | |
#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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