Add scenario test manager

This commit adds a scenario test manager and an example scenario test
using it for cross-connectivity between pods and vms.

Change-Id: I890f5b35847a7b874659c52b172a5af7da26a147
This commit is contained in:
Daniel Mellado 2017-10-10 09:42:27 +00:00
parent 8883d324ba
commit 0a820212fe
7 changed files with 213 additions and 0 deletions

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Tempest Integration of Kuryr
============================
Overview
========
This project defines a tempest plugin containing tests used to verify the
functionality of a kuryr installation. The plugin will automatically load
these tests into tempest.

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.. include:: ../../README.rst
Scenario Tests
==============
.. toctree::
:maxdepth: 1
scenario_tests/scenario

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../../../kuryr_tempest_plugin/tests/scenario/README.rst

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What are these tests?
---------------------
As stated in the tempest developer guide, scenario tests are meant to be used to
test the interaction between several OpenStack services to perform a real-life
use case.
In the case of the Kuryr Tempest Plugin it also involves interaction with
Kubernetes pods, so its manager class includes handlers to its python bindings.
A developer using this manager would be able to perform, among others, CRUD
operations with pods, alongside Kuryr-K8s added funcionality.

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# Copyright 2017 Red Hat, Inc.
#
# 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
from kubernetes import client as k8s_client
from kubernetes import config as k8s_config
from tempest.scenario import manager
from tempest.lib.common.utils import data_utils
from tempest import config
CONF = config.CONF
class BaseKuryrScenarioTest(manager.NetworkScenarioTest):
@classmethod
def skip_checks(cls):
super(BaseKuryrScenarioTest, cls).skip_checks()
if not CONF.service_available.kuryr:
raise cls.skipException('Kuryr support is required')
@classmethod
def setup_clients(cls):
super(BaseKuryrScenarioTest, cls).setup_clients()
cls.k8s_client = k8s_client
@classmethod
def resource_setup(cls):
super(BaseKuryrScenarioTest, cls).resource_setup()
cls.pod_fips = []
# TODO (dmellado): Config k8s client in a cleaner way
k8s_config.load_kube_config()
@classmethod
def resource_cleanup(cls):
super(BaseKuryrScenarioTest, cls).resource_cleanup()
for fip in cls.pod_fips:
cls.os_admin.floating_ips_client.delete_floatingip(
fip['floatingip']['id'])
def create_pod(self, name=None, image='celebdor/kuryr-demo',
namespace="default"):
name = data_utils.rand_name(prefix='kuryr-pod')
pod = self.k8s_client.V1Pod()
pod.metadata = self.k8s_client.V1ObjectMeta(name=name)
container = self.k8s_client.V1Container()
container.image = image
container.args = ["sleep", "3600"]
container.name = name
spec = self.k8s_client.V1PodSpec()
spec.containers = [container]
pod.spec = spec
self.k8s_client.CoreV1Api().create_namespaced_pod(namespace=namespace,
body=pod)
status = ""
while status != "Running":
# TODO (dmellado) add timeout config to tempest plugin
time.sleep(1)
status = self.get_pod_status(name, namespace)
return name, pod
def delete_pod(self, pod_name, body=None, namespace="default"):
if body is None:
body = {}
self.k8s_client.CoreV1Api().delete_namespaced_pod(
name=pod_name,
body=body,
namespace=namespace)
def get_pod_ip(self, pod_name, namespace="default"):
pod_list = self.k8s_client.CoreV1Api().list_namespaced_pod(
namespace=namespace)
for pod in pod_list.items:
if pod.metadata.name == pod_name:
return pod.status.pod_ip
def get_pod_status(self, pod_name, namespace="default"):
pod_list = self.k8s_client.CoreV1Api().list_namespaced_pod(
namespace=namespace)
for pod in pod_list.items:
if pod.metadata.name == pod_name:
return pod.status.phase
def get_pod_port(self, pod_name, namespace="default"):
# TODO(gcheresh) get pod port using container id, as kuryr this would
# depend on port_debug kuryr feature
port_list = self.os_admin.ports_client.list_ports()
for port in port_list['ports']:
if pod_name == port['name']:
return port
def assign_fip_to_pod(self, pod_name, namespace="default"):
ext_net_id = CONF.network.public_network_id
pod_fip = self.os_admin.floating_ips_client.create_floatingip(
floating_network_id=ext_net_id,
tenant_id=self.get_project_id(),
port_id=self.get_pod_port(pod_name)['id'])
self.pod_fips.append(pod_fip)
return pod_fip
def get_project_id(self, project_name='k8s'):
projects_list = self.os_admin.projects_client.list_projects()
for project in projects_list['projects']:
if project_name == project['name']:
return project['id']

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# Copyright 2017 Red Hat, Inc.
#
# 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 testtools
from oslo_log import log as logging
from tempest import config
from tempest.lib import decorators
from tempest.lib import exceptions
from tempest.lib.common.utils import data_utils
from kuryr_tempest_plugin.tests.scenario import base
LOG = logging.getLogger(__name__)
CONF = config.CONF
class TestCrossPingScenario(base.BaseKuryrScenarioTest):
@classmethod
def skip_checks(cls):
super(TestCrossPingScenario, cls).skip_checks()
if not CONF.network_feature_enabled.floating_ips:
raise cls.skipException("Floating ips are not available")
@decorators.idempotent_id('bddf5441-1244-449d-a125-b5fddfb1a1a8')
def test_vm_pod_ping(self):
keypair = self.create_keypair()
security_groups = [
{'name': self._create_security_group()['name']}
]
server = self.create_server(name=data_utils.rand_name(prefix='kuryr'),
key_name=keypair['name'],
security_groups=security_groups)
fip = self.create_floating_ip(server)
pod_name, pod = self.create_pod()
self.addCleanup(self.delete_pod, pod_name, pod)
pod_fip = self.assign_fip_to_pod(pod_name)
ssh_client = self.get_remote_client(fip['floating_ip_address'],
private_key=keypair['private_key'])
cmd = ("ping -c1 -w1 %s &> /dev/null; echo $?" %
pod_fip['floatingip']['floating_ip_address'])
try:
result = ssh_client.exec_command(cmd)
if result:
msg = ('Failed while trying to ping. Could not ping '
'from host "%s" to "%s".' % (
fip['floating_ip_address'],
pod_fip['floatingip']['floating_ip_address']))
self.assertEqual('0', result.rstrip('\n'))
except exceptions.SSHExecCommandFailed:
LOG.error("Couldn't ping server")