752373b1f9
This tests demonstrate how to execute a command in a pod and what behavior is expected. As discussed in the commit bf367ed6ddc63369f76df0a07b248a6711328605 in python-base this behavior would be familiar to Python users, as `subprocess.Popen` has the same property.
278 lines
11 KiB
Python
278 lines
11 KiB
Python
# -*- coding: utf-8 -*-
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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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import json
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import time
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import unittest
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import uuid
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from kubernetes.client import api_client
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from kubernetes.client.apis import core_v1_api
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from kubernetes.e2e_test import base
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from kubernetes.stream import stream
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from kubernetes.stream.ws_client import ERROR_CHANNEL
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def short_uuid():
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id = str(uuid.uuid4())
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return id[-12:]
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def manifest_with_command(name, command):
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return {
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'apiVersion': 'v1',
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'kind': 'Pod',
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'metadata': {
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'name': name
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},
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'spec': {
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'containers': [{
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'image': 'busybox',
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'name': 'sleep',
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"args": [
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"/bin/sh",
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"-c",
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command
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]
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}]
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}
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}
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class TestClient(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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cls.config = base.get_e2e_configuration()
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def test_pod_apis(self):
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client = api_client.ApiClient(configuration=self.config)
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api = core_v1_api.CoreV1Api(client)
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name = 'busybox-test-' + short_uuid()
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pod_manifest = manifest_with_command(name, "while true;do date;sleep 5; done")
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resp = api.create_namespaced_pod(body=pod_manifest,
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namespace='default')
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self.assertEqual(name, resp.metadata.name)
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self.assertTrue(resp.status.phase)
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while True:
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resp = api.read_namespaced_pod(name=name,
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namespace='default')
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self.assertEqual(name, resp.metadata.name)
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self.assertTrue(resp.status.phase)
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if resp.status.phase != 'Pending':
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break
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time.sleep(1)
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exec_command = ['/bin/sh',
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'-c',
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'for i in $(seq 1 3); do date; done']
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resp = stream(api.connect_get_namespaced_pod_exec, name, 'default',
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command=exec_command,
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stderr=False, stdin=False,
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stdout=True, tty=False)
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print('EXEC response : %s' % resp)
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self.assertEqual(3, len(resp.splitlines()))
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exec_command = 'uptime'
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resp = stream(api.connect_post_namespaced_pod_exec, name, 'default',
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command=exec_command,
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stderr=False, stdin=False,
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stdout=True, tty=False)
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print('EXEC response : %s' % resp)
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self.assertEqual(1, len(resp.splitlines()))
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resp = stream(api.connect_post_namespaced_pod_exec, name, 'default',
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command='/bin/sh',
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stderr=True, stdin=True,
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stdout=True, tty=False,
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_preload_content=False)
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resp.write_stdin("echo test string 1\n")
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line = resp.readline_stdout(timeout=5)
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self.assertFalse(resp.peek_stderr())
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self.assertEqual("test string 1", line)
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resp.write_stdin("echo test string 2 >&2\n")
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line = resp.readline_stderr(timeout=5)
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self.assertFalse(resp.peek_stdout())
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self.assertEqual("test string 2", line)
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resp.write_stdin("exit\n")
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resp.update(timeout=5)
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line = resp.read_channel(ERROR_CHANNEL)
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status = json.loads(line)
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self.assertEqual(status['status'], 'Success')
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resp.update(timeout=5)
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self.assertFalse(resp.is_open())
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number_of_pods = len(api.list_pod_for_all_namespaces().items)
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self.assertTrue(number_of_pods > 0)
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resp = api.delete_namespaced_pod(name=name, body={},
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namespace='default')
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def test_exit_code(self):
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client = api_client.ApiClient(configuration=self.config)
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api = core_v1_api.CoreV1Api(client)
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name = 'busybox-test-' + short_uuid()
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pod_manifest = manifest_with_command(name, "while true;do date;sleep 5; done")
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resp = api.create_namespaced_pod(body=pod_manifest,
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namespace='default')
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self.assertEqual(name, resp.metadata.name)
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self.assertTrue(resp.status.phase)
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while True:
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resp = api.read_namespaced_pod(name=name,
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namespace='default')
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self.assertEqual(name, resp.metadata.name)
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self.assertTrue(resp.status.phase)
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if resp.status.phase == 'Running':
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break
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time.sleep(1)
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commands_expected_values = (
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(["false", 1]),
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(["/bin/sh", "-c", "sleep 1; exit 3"], 3),
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(["true", 0]),
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(["/bin/sh", "-c", "ls /"], 0)
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)
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for command, value in commands_expected_values:
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client = stream(api.connect_get_namespaced_pod_exec, name, 'default',
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command=command,
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stderr=True, stdin=False,
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stdout=True, tty=False,
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_preload_content=False)
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self.assertIsNone(client.returncode)
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client.run_forever(timeout=10)
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self.assertEqual(client.returncode, value)
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resp = api.delete_namespaced_pod(name=name, body={},
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namespace='default')
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def test_service_apis(self):
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client = api_client.ApiClient(configuration=self.config)
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api = core_v1_api.CoreV1Api(client)
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name = 'frontend-' + short_uuid()
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service_manifest = {'apiVersion': 'v1',
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'kind': 'Service',
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'metadata': {'labels': {'name': name},
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'name': name,
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'resourceversion': 'v1'},
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'spec': {'ports': [{'name': 'port',
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'port': 80,
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'protocol': 'TCP',
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'targetPort': 80}],
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'selector': {'name': name}}}
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resp = api.create_namespaced_service(body=service_manifest,
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namespace='default')
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self.assertEqual(name, resp.metadata.name)
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self.assertTrue(resp.status)
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resp = api.read_namespaced_service(name=name,
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namespace='default')
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self.assertEqual(name, resp.metadata.name)
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self.assertTrue(resp.status)
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service_manifest['spec']['ports'] = [{'name': 'new',
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'port': 8080,
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'protocol': 'TCP',
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'targetPort': 8080}]
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resp = api.patch_namespaced_service(body=service_manifest,
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name=name,
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namespace='default')
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self.assertEqual(2, len(resp.spec.ports))
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self.assertTrue(resp.status)
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resp = api.delete_namespaced_service(name=name, body={},
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namespace='default')
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def test_replication_controller_apis(self):
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client = api_client.ApiClient(configuration=self.config)
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api = core_v1_api.CoreV1Api(client)
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name = 'frontend-' + short_uuid()
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rc_manifest = {
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'apiVersion': 'v1',
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'kind': 'ReplicationController',
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'metadata': {'labels': {'name': name},
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'name': name},
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'spec': {'replicas': 2,
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'selector': {'name': name},
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'template': {'metadata': {
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'labels': {'name': name}},
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'spec': {'containers': [{
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'image': 'nginx',
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'name': 'nginx',
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'ports': [{'containerPort': 80,
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'protocol': 'TCP'}]}]}}}}
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resp = api.create_namespaced_replication_controller(
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body=rc_manifest, namespace='default')
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self.assertEqual(name, resp.metadata.name)
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self.assertEqual(2, resp.spec.replicas)
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resp = api.read_namespaced_replication_controller(
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name=name, namespace='default')
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self.assertEqual(name, resp.metadata.name)
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self.assertEqual(2, resp.spec.replicas)
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resp = api.delete_namespaced_replication_controller(
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name=name, body={}, namespace='default')
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def test_configmap_apis(self):
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client = api_client.ApiClient(configuration=self.config)
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api = core_v1_api.CoreV1Api(client)
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name = 'test-configmap-' + short_uuid()
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test_configmap = {
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"kind": "ConfigMap",
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"apiVersion": "v1",
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"metadata": {
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"name": name,
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},
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"data": {
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"config.json": "{\"command\":\"/usr/bin/mysqld_safe\"}",
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"frontend.cnf": "[mysqld]\nbind-address = 10.0.0.3\nport = 3306\n"
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}
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}
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resp = api.create_namespaced_config_map(
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body=test_configmap, namespace='default'
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)
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self.assertEqual(name, resp.metadata.name)
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resp = api.read_namespaced_config_map(
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name=name, namespace='default')
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self.assertEqual(name, resp.metadata.name)
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test_configmap['data']['config.json'] = "{}"
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resp = api.patch_namespaced_config_map(
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name=name, namespace='default', body=test_configmap)
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resp = api.delete_namespaced_config_map(
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name=name, body={}, namespace='default')
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resp = api.list_namespaced_config_map('default', pretty=True)
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self.assertEqual([], resp.items)
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def test_node_apis(self):
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client = api_client.ApiClient(configuration=self.config)
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api = core_v1_api.CoreV1Api(client)
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for item in api.list_node().items:
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node = api.read_node(name=item.metadata.name)
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self.assertTrue(len(node.metadata.labels) > 0)
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self.assertTrue(isinstance(node.metadata.labels, dict))
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