From 9880765419aa988db15241ad906cf2c8f8a4d581 Mon Sep 17 00:00:00 2001
From: Yulia Portnova <yportnova@mirantis.com>
Date: Fri, 15 Jan 2016 11:28:09 +0200
Subject: [PATCH] Topic/server arguments changed in simulator.py

passing config with --config-file
passing list of topics to use with -tp arg;
passing server name with -s arg

Change-Id: I8dcce9e725117f8a046135b94d8d2047d24bbf76
---
 tools/simulator.py | 37 +++++++++++++++++++++++++++++--------
 1 file changed, 29 insertions(+), 8 deletions(-)

diff --git a/tools/simulator.py b/tools/simulator.py
index 0bc0c3ba3..93a649ca8 100755
--- a/tools/simulator.py
+++ b/tools/simulator.py
@@ -16,6 +16,7 @@ eventlet.monkey_patch()
 import argparse
 import collections
 import datetime
+import itertools
 import logging
 import os
 import random
@@ -242,6 +243,16 @@ def rpc_server(transport, target, wait_before_answer, executor, show_stats,
     server.wait()
 
 
+def spawn_rpc_clients(threads, transport, targets,
+                      *args, **kwargs):
+    p = eventlet.GreenPool(size=threads)
+    targets = itertools.cycle(targets)
+    for i in range(0, threads):
+        target = targets.next()
+        p.spawn_n(send_msg, i, transport, target, *args, **kwargs)
+    p.waitall()
+
+
 def threads_spawner(threads, method, *args, **kwargs):
     p = eventlet.GreenPool(size=threads)
     for i in range(0, threads):
@@ -319,11 +330,16 @@ def main():
     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="Topic to publish/receive messages to/from.")
+    parser.add_argument('-tp', '--topics', dest='topics', nargs="+",
+                        default=["profiler_topic"],
+                        help="Topics to publish/receive messages to/from.")
+    parser.add_argument('-s', '--server', dest='server',
+                        default="profiler_server",
+                        help="Server to publish/receive messages to/from.")
     parser.add_argument('-l', dest='duration', type=int,
                         help='send messages for certain time')
+    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')
@@ -371,6 +387,9 @@ def main():
 
     _setup_logging(is_debug=args.debug)
 
+    if args.config_file:
+        cfg.CONF(["--config-file", args.config_file])
+
     if args.mode in ['rpc-server', 'rpc-client']:
         transport = messaging.get_transport(cfg.CONF, url=args.url)
     else:
@@ -378,7 +397,6 @@ def main():
                                                          url=args.url)
         cfg.CONF.oslo_messaging_notifications.topics = "notif"
         cfg.CONF.oslo_messaging_notifications.driver = "messaging"
-    target = messaging.Target(topic=args.topic, server='profiler_server')
 
     # oslo.config defaults
     cfg.CONF.heartbeat_interval = 5
@@ -386,6 +404,7 @@ def main():
     cfg.CONF.project = 'oslo.messaging'
 
     if args.mode == 'rpc-server':
+        target = messaging.Target(topic=args.topics[0], server=args.server)
         if args.url.startswith('zmq'):
             cfg.CONF.rpc_zmq_matchmaker = "redis"
             transport._driver.matchmaker._redis.flushdb()
@@ -402,9 +421,11 @@ def main():
         init_msg(args.messages)
 
         start = datetime.datetime.now()
-        threads_spawner(args.threads, send_msg, transport, target,
-                        args.wait_after_msg, args.timeout, args.is_cast,
-                        args.messages, args.duration)
+        targets = [messaging.Target(topic=topic, server=args.server) for topic
+                   in args.topics]
+        spawn_rpc_clients(args.threads, transport, targets,
+                          args.wait_after_msg, args.timeout, args.is_cast,
+                          args.messages, args.duration)
         time_elapsed = (datetime.datetime.now() - start).total_seconds()
 
         msg_count = 0
@@ -419,7 +440,7 @@ def main():
         log_msg = '%s bytes were sent for %d seconds. Bandwidth is %d b/s' % (
             total_bytes, time_elapsed, (total_bytes / time_elapsed))
         LOG.info(log_msg)
-        with open('./oslo_res_%s.txt' % args.topic, 'a+') as f:
+        with open('./oslo_res_%s.txt' % args.server, 'a+') as f:
             f.write(log_msg + '\n')
 
         LOG.info("calls finished, wait %d seconds" % args.exit_wait)