aboutsummaryrefslogtreecommitdiffstats
path: root/functest_kubernetes/ims/ims.py
blob: 30a4f34351235a710a1ec5c0c0adb60128a63a8d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
#!/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"
    ns_generate_name = "ims-"

    __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=self.ns_generate_name)))
        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[:]
        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:
            # pylint: disable=bad-continuation
            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:
            # pylint: disable=bad-continuation
            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, stderr=subprocess.STDOUT)
        self.__logger.debug(output.decode("utf-8"))

    def clean(self):
        cmd = ["helm", "uninstall", "clearwater", "-n", self.namespace]
        output = subprocess.check_output(cmd, stderr=subprocess.STDOUT)
        self.__logger.debug(output.decode("utf-8"))
        super(HelmVims, self).clean()