Fix zaqar-bench not working

Currently zaqar-bench do not work with up-to-date Zaqar and
python-zaqarclient.
This happened because Zaqar server moved to version 1.1 and
python-zaqarclient did not.
And also because python-zaqarclient has changed it's default
authentication backend to "keystone".

This patch makes zaqar-bench instantiate each python-zaqarclient's
Client object with Zaqar API version, "X-PROJECT-ID" and 'noauth'
backend specified.

Also to avoid huge code duplication it adds "helpers.py" file which
provides a convenient method to get a new Client object.

Change-Id: If0d905d3d373d145d5c46738d33685c47fe6d425
Closes-Bug: 1518815

zaqar/bench/conductor.py

@@ -17,10 +17,9 @@ from __future__ import print_function
 import json
 import multiprocessing as mp
 
-from zaqarclient.queues import client
-
 from zaqar.bench import config
 from zaqar.bench import consumer
+from zaqar.bench import helpers
 from zaqar.bench import observer
 from zaqar.bench import producer
 
@@ -39,7 +38,7 @@ def _print_verbose_stats(name, stats):
 
 
 def _reset_queues():
-    cli = client.Client(CONF.server_url, 1.1)
+    cli = helpers.get_new_client()
 
     for i in range(CONF.num_queues):
         # TODO(kgriffs): DRY up name generation so it is done

zaqar/bench/consumer.py

@@ -24,10 +24,10 @@ from gevent import monkey as curious_george
 curious_george.patch_all(thread=False, select=False)
 import gevent
 import marktime
-from zaqarclient.queues import client
 from zaqarclient.transport import errors
 
 from zaqar.bench import config
+from zaqar.bench import helpers
 
 CONF = config.conf
 
@@ -95,7 +95,7 @@ def claim_delete(queues, stats, test_duration, ttl, grace, limit):
 def load_generator(stats, num_workers, num_queues,
                    test_duration, url, ttl, grace, limit):
 
-    cli = client.Client(CONF.server_url)
+    cli = helpers.get_new_client()
     queues = [cli.queue(CONF.queue_prefix + '-' + str(i))
               for i in range(num_queues)]
 

zaqar/bench/helpers.py

@@ -0,0 +1,31 @@
+# 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.
+
+from zaqarclient.queues import client
+
+from zaqar.bench import config
+
+CONF = config.conf
+
+client_conf = {
+    'auth_opts': {
+        'backend': 'noauth',
+        'options': {
+            'os_project_id': 'my-lovely-benchmark',
+        },
+    },
+}
+
+
+def get_new_client():
+    return client.Client(CONF.server_url, 1.1, conf=client_conf)

zaqar/bench/observer.py

@@ -25,10 +25,10 @@ curious_george.patch_all(thread=False, select=False)
 import gevent
 import marktime
 from six.moves import urllib
-from zaqarclient.queues import client
 from zaqarclient.transport import errors
 
 from zaqar.bench import config
+from zaqar.bench import helpers
 
 CONF = config.conf
 
@@ -99,7 +99,7 @@ def observer(queues, stats, test_duration, limit):
 def load_generator(stats, num_workers, num_queues,
                    test_duration, limit):
 
-    cli = client.Client(CONF.server_url)
+    cli = helpers.get_new_client()
     queues = [cli.queue(CONF.queue_prefix + '-' + str(i))
               for i in range(num_queues)]
 

zaqar/bench/producer.py

@@ -25,10 +25,10 @@ from gevent import monkey as curious_george
 curious_george.patch_all(thread=False, select=False)
 import gevent
 import marktime
-from zaqarclient.queues import client
 from zaqarclient.transport import errors
 
 from zaqar.bench import config
+from zaqar.bench import helpers
 
 CONF = config.conf
 
@@ -104,7 +104,7 @@ def producer(queues, message_pool, stats, test_duration):
 # weight them, so can have some busy queues, some not.)
 def load_generator(stats, num_workers, num_queues, test_duration):
 
-    cli = client.Client(CONF.server_url)
+    cli = helpers.get_new_client()
     queues = [cli.queue(CONF.queue_prefix + '-' + str(i))
               for i in range(num_queues)]