90 lines
3.3 KiB
Python
90 lines
3.3 KiB
Python
# Copyright (c) 2021 Red Hat
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from __future__ import absolute_import
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import time
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from oslo_log import log
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from tobiko.shell import ssh
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from tobiko.shell import sh
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from tobiko.tests import base
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from tobiko.tests.scenario.octavia.exceptions import RequestException
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LOG = log.getLogger(__name__)
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CURL_OPTIONS = "-f --connect-timeout 2 -g"
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class Validators(base.TobikoTest):
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def request(self, client_stack, server_ip_address, protocol, server_port):
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"""Perform a request on a server.
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Returns the response in case of success, throws an RequestException
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otherwise.
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"""
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if ':' in server_ip_address:
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# Add square brackets around IPv6 address to please curl
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server_ip_address = "[{}]".format(server_ip_address)
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cmd = "curl {} {}://{}:{}/id".format(
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CURL_OPTIONS, protocol.lower(), server_ip_address, server_port)
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ssh_client = ssh.ssh_client(
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client_stack.floating_ip_address,
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username=client_stack.image_fixture.username)
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ret = sh.ssh_execute(ssh_client, cmd)
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if ret.exit_status != 0:
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raise RequestException(command=cmd,
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error=ret.stderr)
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return ret.stdout
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def check_members_balanced(self, listener_stack, client_stack,
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members_count,
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loadbalancer_vip, loadbalancer_protocol,
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loadbalancer_port):
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"""Check if traffic is properly balanced between members."""
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replies = {}
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for _ in range(members_count * 10):
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content = self.request(
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client_stack, loadbalancer_vip,
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loadbalancer_protocol, loadbalancer_port)
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if content not in replies:
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replies[content] = 0
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replies[content] += 1
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# wait one second (required when using cirros' nc fake webserver)
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time.sleep(1)
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LOG.debug("Replies from load balancer: {}".format(replies))
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# assert that 'members_count' servers replied
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self.assertEqual(members_count, len(replies),
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'The number of detected active members:{} is not '
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'as expected:{}'.format(len(replies), members_count))
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if listener_stack.lb_algorithm == 'ROUND_ROBIN':
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# assert that requests have been fairly dispatched (each server
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# received the same number of requests)
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self.assertEqual(1, len(set(replies.values())),
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'The number of requests served by each member is '
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'different and not as expected by used '
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'ROUND_ROBIN algorithm.')
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