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#!/usr/bin/env python
# Copyright (c) 2020 Orange and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
"""Deploy and test Clearwater vIMS using Kubernetes"""
from __future__ import division
import abc
import logging
import time
import subprocess
import re
import yaml
from kubernetes import client
from kubernetes import config
from kubernetes import watch
import pkg_resources
from xtesting.core import testcase
class Vims(testcase.TestCase): # pylint: disable=too-many-instance-attributes
"""Deploy and test Clearwater vIMS using Kubernetes
It leverage on the Python kubernetes client to apply operation proposed by
clearwater-docker.
See https://github.com/Metaswitch/clearwater-docker for more details
"""
watch_timeout = 1800
metadata_name = "env-vars"
test_image_name = "ollivier/clearwater-live-test:hunter"
test_container_name = "live-test"
__logger = logging.getLogger(__name__)
deployment_list = [
"astaire", "bono", "cassandra", "chronos", "ellis", "etcd", "homer",
"homestead", "homestead-prov", "ralf", "sprout"]
def __init__(self, **kwargs):
super(Vims, self).__init__(**kwargs)
config.load_kube_config()
self.corev1 = client.CoreV1Api()
self.appsv1 = client.AppsV1Api()
self.output_log_name = 'functest-kubernetes.log'
self.output_debug_log_name = 'functest-kubernetes.debug.log'
self.namespace = ""
self.zone = ""
def prepare_vnf(self):
"""Prepare vIMS as proposed by clearwater-live-test
It creates a dedicated namespace and the configmap needed.
See https://github.com/Metaswitch/clearwater-live-test for more details
"""
api_response = self.corev1.create_namespace(
client.V1Namespace(metadata=client.V1ObjectMeta(
generate_name="ims-")))
self.namespace = api_response.metadata.name
self.__logger.debug("create_namespace: %s", api_response)
self.zone = '{}.svc.cluster.local'.format(self.namespace)
metadata = client.V1ObjectMeta(
name=self.metadata_name, namespace=self.namespace)
body = client.V1ConfigMap(
metadata=metadata,
data={"ADDITIONAL_SHARED_CONFIG": "", "ZONE": self.zone})
api_response = self.corev1.create_namespaced_config_map(
self.namespace, body=body)
self.__logger.debug("create_namespaced_config_map: %s", api_response)
@abc.abstractmethod
def deploy_vnf(self):
"""Deploy vIMS as proposed by clearwater-docker
It must be overriden on purpose.
See https://github.com/Metaswitch/clearwater-docker for more details
"""
def wait_vnf(self):
"""Wait vIMS is up and running"""
assert self.namespace
status = self.deployment_list.copy()
watch_deployment = watch.Watch()
for event in watch_deployment.stream(
func=self.appsv1.list_namespaced_deployment,
namespace=self.namespace, timeout_seconds=self.watch_timeout):
self.__logger.debug(event)
if event["object"].status.ready_replicas == 1:
if event['object'].metadata.name in status:
status.remove(event['object'].metadata.name)
self.__logger.info(
"%s started in %0.2f sec",
event['object'].metadata.name,
time.time()-self.start_time)
if not status:
watch_deployment.stop()
if not status:
self.result = 1/2 * 100
return True
self.__logger.error("Cannot deploy vIMS")
return False
def test_vnf(self):
"""Test vIMS as proposed by clearwater-live-test
It leverages an unofficial Clearwater docker to allow testing from
the Kubernetes cluster.
See https://github.com/Metaswitch/clearwater-live-test for more details
"""
time.sleep(120)
assert self.namespace
assert self.zone
container = client.V1Container(
name=self.test_container_name, image=self.test_image_name,
command=["rake", "test[{}]".format(self.zone),
"PROXY=bono.{}".format(self.zone),
"ELLIS=ellis.{}".format(self.zone),
"SIGNUP_CODE=secret", "--trace"])
spec = client.V1PodSpec(containers=[container], restart_policy="Never")
metadata = client.V1ObjectMeta(name=self.test_container_name)
body = client.V1Pod(metadata=metadata, spec=spec)
api_response = self.corev1.create_namespaced_pod(self.namespace, body)
watch_deployment = watch.Watch()
for event in watch_deployment.stream(
func=self.corev1.list_namespaced_pod,
namespace=self.namespace, timeout_seconds=self.watch_timeout):
self.__logger.debug(event)
if event["object"].metadata.name == self.test_container_name:
if (event["object"].status.phase == 'Succeeded'
or event["object"].status.phase == 'Failed'):
watch_deployment.stop()
api_response = self.corev1.read_namespaced_pod_log(
name=self.test_container_name, namespace=self.namespace)
self.__logger.info(api_response)
vims_test_result = {}
try:
grp = re.search(
r'^(\d+) failures out of (\d+) tests run.*\n'
r'(\d+) tests skipped$', api_response,
re.MULTILINE | re.DOTALL)
assert grp
vims_test_result["failures"] = int(grp.group(1))
vims_test_result["total"] = int(grp.group(2))
vims_test_result["skipped"] = int(grp.group(3))
vims_test_result['passed'] = (
int(grp.group(2)) - int(grp.group(3)) - int(grp.group(1)))
if vims_test_result['total'] - vims_test_result['skipped'] > 0:
vnf_test_rate = vims_test_result['passed'] / (
vims_test_result['total'] - vims_test_result['skipped'])
else:
vnf_test_rate = 0
self.result += 1/2 * 100 * vnf_test_rate
except Exception: # pylint: disable=broad-except
self.__logger.exception("Cannot parse live tests results")
def run(self, **kwargs):
self.start_time = time.time()
try:
self.prepare_vnf()
self.deploy_vnf()
if self.wait_vnf():
self.test_vnf()
except client.rest.ApiException:
self.__logger.exception("Cannot deploy and test vIms")
self.stop_time = time.time()
def clean(self):
try:
api_response = self.corev1.delete_namespaced_pod(
name=self.test_container_name, namespace=self.namespace)
self.__logger.debug("delete_namespaced_pod: %s", api_response)
except client.rest.ApiException:
pass
try:
api_response = self.corev1.delete_namespaced_config_map(
name=self.metadata_name, namespace=self.namespace)
self.__logger.debug(
"delete_namespaced_config_map: %s", api_response)
except client.rest.ApiException:
pass
try:
api_response = self.corev1.delete_namespace(self.namespace)
self.__logger.debug("delete_namespace: %s", self.namespace)
except client.rest.ApiException:
pass
class K8sVims(Vims):
"""Deploy vIMS via kubectl as proposed by clearwater-docker
It leverages unofficial Clearwater dockers as proposed in the
documentation.
See https://github.com/Metaswitch/clearwater-docker for more details
"""
__logger = logging.getLogger(__name__)
def deploy_vnf(self):
"""Deploy vIMS via kubectl as proposed by clearwater-docker
See https://github.com/Metaswitch/clearwater-docker for more details
"""
assert self.namespace
for deployment in self.deployment_list:
with open(pkg_resources.resource_filename(
'functest_kubernetes',
'ims/{}-depl.yaml'.format(deployment))) as yfile:
body = yaml.safe_load(yfile)
resp = self.appsv1.create_namespaced_deployment(
body=body, namespace=self.namespace)
self.__logger.info("Deployment %s created", resp.metadata.name)
self.__logger.debug(
"create_namespaced_deployment: %s", resp)
for service in self.deployment_list:
with open(pkg_resources.resource_filename(
'functest_kubernetes',
'ims/{}-svc.yaml'.format(service))) as yfile:
body = yaml.safe_load(yfile)
resp = self.corev1.create_namespaced_service(
body=body, namespace=self.namespace)
self.__logger.info("Service %s created", resp.metadata.name)
self.__logger.debug(
"create_namespaced_service: %s", resp)
def clean(self):
for deployment in self.deployment_list:
try:
api_response = self.appsv1.delete_namespaced_deployment(
name=deployment, namespace=self.namespace)
self.__logger.debug(
"delete_namespaced_deployment: %s", api_response)
except client.rest.ApiException:
pass
try:
api_response = self.corev1.delete_namespaced_service(
name=deployment, namespace=self.namespace)
self.__logger.debug(
"delete_namespaced_service: %s", api_response)
except client.rest.ApiException:
pass
super(K8sVims, self).clean()
class HelmVims(Vims):
"""Deploy vIMS via Helm as proposed by clearwater-docker
It leverages unofficial Clearwater dockers as proposed in the
documentation.
See https://github.com/Metaswitch/clearwater-docker for more details
"""
__logger = logging.getLogger(__name__)
def deploy_vnf(self):
"""Deploy vIMS via Helm as proposed by clearwater-docker
See https://github.com/Metaswitch/clearwater-docker for more details
"""
cmd = [
"helm", "install", "clearwater",
pkg_resources.resource_filename("functest_kubernetes", "ims/helm"),
"-n", self.namespace]
output = subprocess.check_output(cmd)
self.__logger.debug(output.decode("utf-8"))
def clean(self):
cmd = ["helm", "uninstall", "clearwater", "-n", self.namespace]
output = subprocess.check_output(cmd)
self.__logger.debug(output.decode("utf-8"))
super(HelmVims, self).clean()
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