summaryrefslogtreecommitdiff
path: root/tools/simulator.py
blob: 2f3161b9896657de2bde3c7e794d604fc74a3bc2 (plain)
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
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
#    Licensed 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 eventlet
eventlet.monkey_patch()

import argparse
import bisect
import collections
import functools
import itertools
import json
import logging
import os
import random
import signal
import six
import string
import sys
import threading
import time
import yaml

from oslo_config import cfg
import oslo_messaging as messaging
from oslo_messaging import notify  # noqa
from oslo_messaging import rpc  # noqa
from oslo_utils import timeutils

LOG = logging.getLogger()
RANDOM_GENERATOR = None
CURRENT_PID = None
CLIENTS = []
MESSAGES = []
IS_RUNNING = True
SERVERS = []
TRANSPORT = None

USAGE = """ Usage: ./simulator.py [-h] [--url URL] [-d DEBUG]\
 {notify-server,notify-client,rpc-server,rpc-client} ...

Usage example:
 python tools/simulator.py\
 --url rabbit://stackrabbit:secretrabbit@localhost/ rpc-server
 python tools/simulator.py\
 --url rabbit://stackrabbit:secretrabbit@localhost/ rpc-client\
 --exit-wait 15000 -p 64 -m 64"""

MESSAGES_LIMIT = 1000
DISTRIBUTION_BUCKET_SIZE = 500


def init_random_generator():
    data = []
    file_dir = os.path.dirname(os.path.abspath(__file__))
    with open(os.path.join(file_dir, 'messages_length.yaml')) as m_file:
        content = yaml.safe_load(m_file)
        data += [int(n) for n in content[
            'test_data']['string_lengths'].split(', ')]

    ranges = collections.defaultdict(int)
    for msg_length in data:
        range_start = ((msg_length // DISTRIBUTION_BUCKET_SIZE) *
                       DISTRIBUTION_BUCKET_SIZE + 1)
        ranges[range_start] += 1

    ranges_start = sorted(ranges.keys())
    total_count = len(data)

    accumulated_distribution = []
    running_total = 0
    for range_start in ranges_start:
        norm = float(ranges[range_start]) / total_count
        running_total += norm
        accumulated_distribution.append(running_total)

    def weighted_random_choice():
        r = random.random() * running_total
        start = ranges_start[bisect.bisect_right(accumulated_distribution, r)]
        return random.randrange(start, start + DISTRIBUTION_BUCKET_SIZE)

    return weighted_random_choice


class LoggingNoParsingFilter(logging.Filter):
    def filter(self, record):
        msg = record.getMessage()
        for i in ['received {', 'MSG_ID is ']:
            if i in msg:
                return False
        return True


Message = collections.namedtuple(
    'Message', ['seq', 'cargo', 'client_ts', 'server_ts', 'return_ts'])


def make_message(seq, cargo, client_ts=0, server_ts=0, return_ts=0):
    return Message(seq, cargo, client_ts, server_ts, return_ts)


def update_message(message, **kwargs):
    return Message(*message)._replace(**kwargs)


class MessageStatsCollector(object):
    def __init__(self, label):
        self.label = label
        self.buffer = []  # buffer to store messages during report interval
        self.series = []  # stats for every report interval

        now = time.time()
        diff = int(now) - now + 1  # align start to whole seconds
        threading.Timer(diff, self.monitor).start()  # schedule in a second

    def monitor(self):
        global IS_RUNNING
        if IS_RUNNING:
            threading.Timer(1.0, self.monitor).start()
        now = time.time()

        count = len(self.buffer)

        size = 0
        min_latency = sys.maxsize
        max_latency = 0
        sum_latencies = 0

        for i in six.moves.range(count):
            p = self.buffer[i]
            size += len(p.cargo)

            latency = None
            if p.return_ts:
                latency = p.return_ts - p.client_ts  # round-trip
            elif p.server_ts:
                latency = p.server_ts - p.client_ts  # client -> server

            if latency:
                sum_latencies += latency
                min_latency = min(min_latency, latency)
                max_latency = max(max_latency, latency)

        del self.buffer[:count]  # trim processed items

        seq = len(self.series)
        stats = dict(seq=seq, timestamp=now, count=count, size=size)
        msg = ('%-14s: seq: %-4d count: %-6d bytes: %-10d' %
               (self.label, seq, count, size))

        if sum_latencies:
            latency = sum_latencies / count
            stats.update(dict(latency=latency,
                              min_latency=min_latency,
                              max_latency=max_latency))
            msg += (' latency: %-9.3f min: %-9.3f max: %-9.3f' %
                    (latency, min_latency, max_latency))

        self.series.append(stats)
        LOG.info(msg)

    def push(self, parsed_message):
        self.buffer.append(parsed_message)

    def get_series(self):
        return self.series

    @staticmethod
    def calc_stats(label, *collectors):
        count = 0
        size = 0
        min_latency = sys.maxsize
        max_latency = 0
        sum_latencies = 0
        start = sys.maxsize
        end = 0

        for point in itertools.chain(*(c.get_series() for c in collectors)):
            count += point['count']
            size += point['size']
            start = min(start, point['timestamp'])
            end = max(end, point['timestamp'])

            if 'latency' in point:
                sum_latencies += point['latency'] * point['count']
                min_latency = min(min_latency, point['min_latency'])
                max_latency = max(max_latency, point['max_latency'])

        # start is the timestamp of the earliest block, which inclides samples
        # for the prior second
        start -= 1
        duration = end - start if count else 0
        stats = dict(count=count, size=size, duration=duration, count_p_s=0,
                     size_p_s=0)
        if duration:
            stats.update(dict(start=start, end=end,
                              count_p_s=count / duration,
                              size_p_s=size / duration))

        msg = ('%s: duration: %.2f count: %d (%.1f msg/sec) '
               'bytes: %d (%.0f bps)' %
               (label, duration, count, stats['count_p_s'],
                size, stats['size_p_s']))

        if sum_latencies:
            latency = sum_latencies / count
            stats.update(dict(latency=latency,
                              min_latency=min_latency,
                              max_latency=max_latency))
            msg += (' latency: %.3f min: %.3f max: %.3f' %
                    (latency, min_latency, max_latency))

        LOG.info(msg)
        return stats


class NotifyEndpoint(object):
    def __init__(self, wait_before_answer, requeue):
        self.wait_before_answer = wait_before_answer
        self.requeue = requeue
        self.received_messages = MessageStatsCollector('server')
        self.cache = set()

    def info(self, ctxt, publisher_id, event_type, payload, metadata):
        LOG.debug("%s %s %s %s", ctxt, publisher_id, event_type, payload)

        server_ts = time.time()

        message = update_message(payload, server_ts=server_ts)
        self.received_messages.push(message)

        if self.requeue and message.seq not in self.cache:
            self.cache.add(message.seq)

            if self.wait_before_answer > 0:
                time.sleep(self.wait_before_answer)

            return messaging.NotificationResult.REQUEUE

        return messaging.NotificationResult.HANDLED


def notify_server(transport, topic, wait_before_answer, duration, requeue):
    endpoints = [NotifyEndpoint(wait_before_answer, requeue)]
    target = messaging.Target(topic=topic)
    server = notify.get_notification_listener(transport, [target],
                                              endpoints, executor='eventlet')
    run_server(server, duration=duration)

    return endpoints[0]


class BatchNotifyEndpoint(object):
    def __init__(self, wait_before_answer, requeue):
        self.wait_before_answer = wait_before_answer
        self.requeue = requeue
        self.received_messages = MessageStatsCollector('server')
        self.cache = set()

    def info(self, batch):
        LOG.debug('msg rcv')
        LOG.debug("%s", batch)

        server_ts = time.time()

        for item in batch:
            message = update_message(item['payload'], server_ts=server_ts)
            self.received_messages.push(message)

        return messaging.NotificationResult.HANDLED


def batch_notify_server(transport, topic, wait_before_answer, duration,
                        requeue):
    endpoints = [BatchNotifyEndpoint(wait_before_answer, requeue)]
    target = messaging.Target(topic=topic)
    server = notify.get_batch_notification_listener(
        transport, [target],
        endpoints, executor='eventlet',
        batch_size=1000, batch_timeout=5)
    run_server(server, duration=duration)

    return endpoints[0]


class RpcEndpoint(object):
    def __init__(self, wait_before_answer):
        self.wait_before_answer = wait_before_answer
        self.received_messages = MessageStatsCollector('server')

    def info(self, ctxt, message):
        server_ts = time.time()

        LOG.debug("######## RCV: %s", message)

        reply = update_message(message, server_ts=server_ts)
        self.received_messages.push(reply)

        if self.wait_before_answer > 0:
            time.sleep(self.wait_before_answer)

        return reply


class Client(object):
    def __init__(self, client_id, client, method, has_result,
                 wait_after_msg):
        self.client_id = client_id
        self.client = client
        self.method = method
        self.wait_after_msg = wait_after_msg

        self.seq = 0
        self.messages_count = len(MESSAGES)
        # Start sending the messages from a random position to avoid
        # memory re-usage and generate more realistic load on the library
        # and a message transport
        self.position = random.randint(0, self.messages_count - 1)
        self.sent_messages = MessageStatsCollector('client-%s' % client_id)
        self.errors = MessageStatsCollector('error-%s' % client_id)

        if has_result:
            self.round_trip_messages = MessageStatsCollector(
                'round-trip-%s' % client_id)

    def send_msg(self):
        msg = make_message(self.seq, MESSAGES[self.position], time.time())
        self.sent_messages.push(msg)

        res = None
        try:
            res = self.method(self.client, msg)
        except Exception:
            self.errors.push(msg)
        else:
            LOG.debug("SENT: %s", msg)

        if res:
            return_ts = time.time()
            res = update_message(res, return_ts=return_ts)
            self.round_trip_messages.push(res)

        self.seq += 1
        self.position = (self.position + 1) % self.messages_count
        if self.wait_after_msg > 0:
            time.sleep(self.wait_after_msg)


class RPCClient(Client):
    def __init__(self, client_id, transport, target, timeout, is_cast,
                 wait_after_msg):
        client = rpc.RPCClient(transport, target).prepare(timeout=timeout)
        method = _rpc_cast if is_cast else _rpc_call

        super(RPCClient, self).__init__(client_id, client, method,
                                        not is_cast, wait_after_msg)


class NotifyClient(Client):
    def __init__(self, client_id, transport, topic, wait_after_msg):
        client = notify.Notifier(transport, driver='messaging', topic=topic)
        client = client.prepare(publisher_id='publisher-%d' % client_id)
        method = _notify
        super(NotifyClient, self).__init__(client_id, client, method,
                                           False, wait_after_msg)


def generate_messages(messages_count):
    # Limit the messages amount. Clients will reiterate the array again
    # if an amount of messages to be sent is bigger than MESSAGES_LIMIT
    if messages_count > MESSAGES_LIMIT:
        messages_count = MESSAGES_LIMIT
    LOG.info("Generating %d random messages", messages_count)

    for i in six.moves.range(messages_count):
        length = RANDOM_GENERATOR()
        msg = ''.join(random.choice(
                      string.ascii_lowercase) for x in six.moves.range(length))
        MESSAGES.append(msg)

    LOG.info("Messages has been prepared")


def wrap_sigexit(f):
    def inner(*args, **kwargs):
        try:
            return f(*args, **kwargs)
        except SignalExit as e:
            LOG.info('Signal %s is caught. Interrupting the execution',
                     e.signo)
            for server in SERVERS:
                server.stop()
                server.wait()
        finally:
            if TRANSPORT:
                TRANSPORT.cleanup()
    return inner


@wrap_sigexit
def run_server(server, duration=None):
    global IS_RUNNING
    SERVERS.append(server)
    server.start()
    if duration:
        with timeutils.StopWatch(duration) as stop_watch:
            while not stop_watch.expired() and IS_RUNNING:
                time.sleep(1)
        server.stop()
        IS_RUNNING = False
    server.wait()
    LOG.info('The server is terminating')
    time.sleep(1)  # wait for stats collector to process the last second


def rpc_server(transport, target, wait_before_answer, executor, duration):
    endpoints = [RpcEndpoint(wait_before_answer)]
    server = rpc.get_rpc_server(transport, target, endpoints,
                                executor=executor)
    LOG.debug("starting RPC server for target %s", target)

    run_server(server, duration=duration)

    return server.dispatcher.endpoints[0]


@wrap_sigexit
def spawn_rpc_clients(threads, transport, targets, wait_after_msg, timeout,
                      is_cast, messages_count, duration):
    p = eventlet.GreenPool(size=threads)
    targets = itertools.cycle(targets)
    for i in six.moves.range(threads):
        target = next(targets)
        LOG.debug("starting RPC client for target %s", target)
        client_builder = functools.partial(RPCClient, i, transport, target,
                                           timeout, is_cast, wait_after_msg)
        p.spawn_n(send_messages, i, client_builder, messages_count, duration)
    p.waitall()


@wrap_sigexit
def spawn_notify_clients(threads, topic, transport, message_count,
                         wait_after_msg, timeout, duration):
    p = eventlet.GreenPool(size=threads)
    for i in six.moves.range(threads):
        client_builder = functools.partial(NotifyClient, i, transport, topic,
                                           wait_after_msg)
        p.spawn_n(send_messages, i, client_builder, message_count, duration)
    p.waitall()


def send_messages(client_id, client_builder, messages_count, duration):
    global IS_RUNNING
    client = client_builder()
    CLIENTS.append(client)

    # align message sending closer to whole seconds
    now = time.time()
    diff = int(now) - now + 1
    time.sleep(diff)

    if duration:
        with timeutils.StopWatch(duration) as stop_watch:
            while not stop_watch.expired() and IS_RUNNING:
                client.send_msg()
                eventlet.sleep()
        IS_RUNNING = False
    else:
        LOG.debug("Sending %d messages using client %d",
                  messages_count, client_id)
        for _ in six.moves.range(messages_count):
            client.send_msg()
            eventlet.sleep()
            if not IS_RUNNING:
                break
        LOG.debug("Client %d has sent %d messages", client_id, messages_count)

    time.sleep(1)  # wait for replies to be collected


def _rpc_call(client, msg):
    try:
        res = client.call({}, 'info', message=msg)
    except Exception as e:
        LOG.exception('Error %s on CALL for message %s', str(e), msg)
        raise
    else:
        LOG.debug("SENT: %s, RCV: %s", msg, res)
        return res


def _rpc_cast(client, msg):
    try:
        client.cast({}, 'info', message=msg)
    except Exception as e:
        LOG.exception('Error %s on CAST for message %s', str(e), msg)
        raise
    else:
        LOG.debug("SENT: %s", msg)


def _notify(notification_client, msg):
    notification_client.info({}, 'compute.start', msg)


def show_server_stats(endpoint, json_filename):
    LOG.info('=' * 35 + ' summary ' + '=' * 35)
    output = dict(series={}, summary={})
    output['series']['server'] = endpoint.received_messages.get_series()
    stats = MessageStatsCollector.calc_stats(
        'server', endpoint.received_messages)
    output['summary'] = stats

    if json_filename:
        write_json_file(json_filename, output)


def show_client_stats(clients, json_filename, has_reply=False):
    LOG.info('=' * 35 + ' summary ' + '=' * 35)
    output = dict(series={}, summary={})

    for cl in clients:
        cl_id = cl.client_id
        output['series']['client_%s' % cl_id] = cl.sent_messages.get_series()
        output['series']['error_%s' % cl_id] = cl.errors.get_series()

        if has_reply:
            output['series']['round_trip_%s' % cl_id] = (
                cl.round_trip_messages.get_series())

    sent_stats = MessageStatsCollector.calc_stats(
        'client', *(cl.sent_messages for cl in clients))
    output['summary']['client'] = sent_stats

    error_stats = MessageStatsCollector.calc_stats(
        'error', *(cl.errors for cl in clients))
    output['summary']['error'] = error_stats

    if has_reply:
        round_trip_stats = MessageStatsCollector.calc_stats(
            'round-trip', *(cl.round_trip_messages for cl in clients))
        output['summary']['round_trip'] = round_trip_stats

    if json_filename:
        write_json_file(json_filename, output)


def write_json_file(filename, output):
    with open(filename, 'w') as f:
        f.write(json.dumps(output))
        LOG.info('Stats are written into %s', filename)


class SignalExit(SystemExit):
    def __init__(self, signo, exccode=1):
        super(SignalExit, self).__init__(exccode)
        self.signo = signo


def signal_handler(signum, frame):
    global IS_RUNNING
    IS_RUNNING = False

    raise SignalExit(signum)


def _setup_logging(is_debug):
    log_level = logging.DEBUG if is_debug else logging.INFO
    logging.basicConfig(
        stream=sys.stdout, level=log_level,
        format="%(asctime)-15s %(levelname)s %(name)s %(message)s")
    logging.getLogger().handlers[0].addFilter(LoggingNoParsingFilter())
    for i in ['kombu', 'amqp', 'stevedore', 'qpid.messaging'
              'oslo.messaging._drivers.amqp', ]:
        logging.getLogger(i).setLevel(logging.WARN)


def main():
    parser = argparse.ArgumentParser(
        description='Tools to play with oslo.messaging\'s RPC',
        usage=USAGE,
    )
    parser.add_argument('--url', dest='url',
                        default='rabbit://guest:password@localhost/',
                        help="oslo.messaging transport url")
    parser.add_argument('-d', '--debug', dest='debug', type=bool,
                        default=False,
                        help="Turn on DEBUG logging level instead of WARN")
    parser.add_argument('-tp', '--topic', dest='topic',
                        default="profiler_topic",
                        help="Topics to publish/receive messages to/from.")
    parser.add_argument('-s', '--server', dest='server',
                        default="profiler_server",
                        help="Servers to publish/receive messages to/from.")
    parser.add_argument('-tg', '--targets', dest='targets', nargs="+",
                        default=["profiler_topic.profiler_server"],
                        help="Targets to publish/receive messages to/from.")
    parser.add_argument('-l', dest='duration', type=int,
                        help='send messages for certain time')
    parser.add_argument('-j', '--json', dest='json_filename',
                        help='File name to store results in JSON format')
    parser.add_argument('--config-file', dest='config_file', type=str,
                        help="Oslo messaging config file")

    subparsers = parser.add_subparsers(dest='mode',
                                       help='notify/rpc server/client mode')

    server = subparsers.add_parser('notify-server')
    server.add_argument('-w', dest='wait_before_answer', type=int, default=-1)
    server.add_argument('--requeue', dest='requeue', action='store_true')

    server = subparsers.add_parser('batch-notify-server')
    server.add_argument('-w', dest='wait_before_answer', type=int, default=-1)
    server.add_argument('--requeue', dest='requeue', action='store_true')

    client = subparsers.add_parser('notify-client')
    client.add_argument('-p', dest='threads', type=int, default=1,
                        help='number of client threads')
    client.add_argument('-m', dest='messages', type=int, default=1,
                        help='number of call per threads')
    client.add_argument('-w', dest='wait_after_msg', type=float, default=-1,
                        help='sleep time between two messages')
    client.add_argument('--timeout', dest='timeout', type=int, default=3,
                        help='client timeout')

    server = subparsers.add_parser('rpc-server')
    server.add_argument('-w', dest='wait_before_answer', type=int, default=-1)
    server.add_argument('-e', '--executor', dest='executor',
                        type=str, default='eventlet',
                        help='name of a message executor')

    client = subparsers.add_parser('rpc-client')
    client.add_argument('-p', dest='threads', type=int, default=1,
                        help='number of client threads')
    client.add_argument('-m', dest='messages', type=int, default=1,
                        help='number of call per threads')
    client.add_argument('-w', dest='wait_after_msg', type=float, default=-1,
                        help='sleep time between two messages')
    client.add_argument('--timeout', dest='timeout', type=int, default=3,
                        help='client timeout')
    client.add_argument('--exit-wait', dest='exit_wait', type=int, default=0,
                        help='Keep connections open N seconds after calls '
                        'have been done')
    client.add_argument('--is-cast', dest='is_cast', type=bool, default=False,
                        help='Use `call` or `cast` RPC methods')
    client.add_argument('--is-fanout', dest='is_fanout', type=bool,
                        default=False, help='fanout=True for CAST messages')

    args = parser.parse_args()

    _setup_logging(is_debug=args.debug)

    if args.config_file:
        cfg.CONF(["--config-file", args.config_file])

    global TRANSPORT
    if args.mode in ['rpc-server', 'rpc-client']:
        TRANSPORT = messaging.get_transport(cfg.CONF, url=args.url)
    else:
        TRANSPORT = messaging.get_notification_transport(cfg.CONF,
                                                         url=args.url)

    if args.mode in ['rpc-client', 'notify-client']:
        # always generate maximum number of messages for duration-limited tests
        generate_messages(MESSAGES_LIMIT if args.duration else args.messages)

    # oslo.config defaults
    cfg.CONF.heartbeat_interval = 5
    cfg.CONF.prog = os.path.basename(__file__)
    cfg.CONF.project = 'oslo.messaging'

    signal.signal(signal.SIGTERM, signal_handler)
    signal.signal(signal.SIGINT, signal_handler)

    if args.mode == 'rpc-server':
        target = messaging.Target(topic=args.topic, server=args.server)
        if args.url.startswith('zmq'):
            cfg.CONF.oslo_messaging_zmq.rpc_zmq_matchmaker = "redis"

        endpoint = rpc_server(TRANSPORT, target, args.wait_before_answer,
                              args.executor, args.duration)
        show_server_stats(endpoint, args.json_filename)

    elif args.mode == 'notify-server':
        endpoint = notify_server(TRANSPORT, args.topic,
                                 args.wait_before_answer, args.duration,
                                 args.requeue)
        show_server_stats(endpoint, args.json_filename)

    elif args.mode == 'batch-notify-server':
        endpoint = batch_notify_server(TRANSPORT, args.topic,
                                       args.wait_before_answer,
                                       args.duration, args.requeue)
        show_server_stats(endpoint, args.json_filename)

    elif args.mode == 'notify-client':
        spawn_notify_clients(args.threads, args.topic, TRANSPORT,
                             args.messages, args.wait_after_msg,
                             args.timeout, args.duration)
        show_client_stats(CLIENTS, args.json_filename)

    elif args.mode == 'rpc-client':
        targets = [target.partition('.')[::2] for target in args.targets]
        targets = [messaging.Target(
            topic=topic, server=server_name, fanout=args.is_fanout) for
            topic, server_name in targets]
        spawn_rpc_clients(args.threads, TRANSPORT, targets,
                          args.wait_after_msg, args.timeout, args.is_cast,
                          args.messages, args.duration)

        show_client_stats(CLIENTS, args.json_filename, not args.is_cast)

        if args.exit_wait:
            LOG.info("Finished. waiting for %d seconds", args.exit_wait)
            time.sleep(args.exit_wait)


if __name__ == '__main__':
    RANDOM_GENERATOR = init_random_generator()
    CURRENT_PID = os.getpid()
    main()