111 lines
4.3 KiB
Python
111 lines
4.3 KiB
Python
#
|
|
# 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 time
|
|
|
|
import requests
|
|
|
|
from heat_integrationtests.common import test
|
|
from heat_integrationtests.scenario import scenario_base
|
|
|
|
|
|
class AutoscalingLoadBalancerv2Test(scenario_base.ScenarioTestsBase):
|
|
"""The class is responsible for testing ASG + LBv2 scenario.
|
|
|
|
The very common use case tested is an autoscaling group
|
|
of some web application servers behind a loadbalancer.
|
|
"""
|
|
|
|
def setUp(self):
|
|
super(AutoscalingLoadBalancerv2Test, self).setUp()
|
|
self.template_name = 'test_autoscaling_lbv2_neutron.yaml'
|
|
self.app_server_template_name = 'app_server_lbv2_neutron.yaml'
|
|
self.webapp_template_name = 'netcat-webapp.yaml'
|
|
if not self.is_network_extension_supported('lbaasv2'):
|
|
self.skipTest('LBaasv2 extension not available, skipping')
|
|
|
|
def check_num_responses(self, url, expected_num, retries=20):
|
|
resp = set()
|
|
for count in range(retries):
|
|
time.sleep(2)
|
|
try:
|
|
r = requests.get(url, verify=self.verify_cert)
|
|
except requests.exceptions.ConnectionError:
|
|
# The LB may not be up yet, let's retry
|
|
continue
|
|
# skip unsuccessful requests
|
|
if r.status_code == 200:
|
|
resp.add(r.text)
|
|
if len(resp) == expected_num:
|
|
break
|
|
self.assertEqual(expected_num, len(resp))
|
|
|
|
def test_autoscaling_loadbalancer_neutron(self):
|
|
"""Check work of AutoScaing and Neutron LBaaS v2 resource in Heat.
|
|
|
|
The scenario is the following:
|
|
1. Launch a stack with a load balancer and autoscaling group
|
|
of one server, wait until stack create is complete.
|
|
2. Check that there is only one distinctive response from
|
|
loadbalanced IP.
|
|
3. Signal the scale_up policy, wait until all resources in
|
|
autoscaling group are complete.
|
|
4. Check that now there are two distinctive responses from
|
|
loadbalanced IP.
|
|
"""
|
|
|
|
parameters = {
|
|
'flavor': self.conf.minimal_instance_type,
|
|
'image': self.conf.minimal_image_ref,
|
|
'net': self.conf.fixed_network_name,
|
|
'subnet': self.conf.fixed_subnet_name,
|
|
'public_net': self.conf.floating_network_name
|
|
}
|
|
|
|
app_server_template = self._load_template(
|
|
__file__, self.app_server_template_name, self.sub_dir
|
|
)
|
|
webapp_template = self._load_template(
|
|
__file__, self.webapp_template_name, self.sub_dir
|
|
)
|
|
files = {'appserver.yaml': app_server_template,
|
|
'webapp.yaml': webapp_template}
|
|
env = {'resource_registry':
|
|
{'OS::Test::NeutronAppServer': 'appserver.yaml',
|
|
'OS::Test::WebAppConfig': 'webapp.yaml'}}
|
|
|
|
# Launch stack
|
|
sid = self.launch_stack(
|
|
template_name=self.template_name,
|
|
parameters=parameters,
|
|
files=files,
|
|
environment=env
|
|
)
|
|
stack = self.client.stacks.get(sid)
|
|
lb_url = self._stack_output(stack, 'lburl')
|
|
# Check number of distinctive responces, must be 1
|
|
self.check_num_responses(lb_url, 1)
|
|
|
|
# Signal the scaling hook
|
|
self.client.resources.signal(sid, 'scale_up')
|
|
|
|
# Wait for AutoScalingGroup update to finish
|
|
asg = self.client.resources.get(sid, 'asg')
|
|
test.call_until_true(self.conf.build_timeout,
|
|
self.conf.build_interval,
|
|
self.check_autoscale_complete,
|
|
asg.physical_resource_id, 2, sid, 'scale_up')
|
|
|
|
# Check number of distinctive responses, must now be 2
|
|
self.check_num_responses(lb_url, 2)
|