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traefik-certmanager/kubernetes/e2e_test/test_client.py
Tom Neuber 9129813244
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fix(kubernetes): temporary solution for updated k8s python client
2025-01-05 00:33:58 +01:00

607 lines
23 KiB
Python

# -*- coding: utf-8 -*-
# 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 json
import os
import select
import socket
import time
import unittest
import uuid
import six
import io
import gzip
from kubernetes.client import api_client
from kubernetes.client.api import core_v1_api
from kubernetes.e2e_test import base
from kubernetes.stream import stream, portforward
from kubernetes.stream.ws_client import ERROR_CHANNEL
from kubernetes.client.rest import ApiException
import six.moves.urllib.request as urllib_request
if six.PY3:
from http import HTTPStatus
else:
import httplib
def short_uuid():
id = str(uuid.uuid4())
return id[-12:]
def manifest_with_command(name, command):
return {
'apiVersion': 'v1',
'kind': 'Pod',
'metadata': {
'name': name
},
'spec': {
'containers': [{
'image': 'busybox',
'name': 'sleep',
"args": [
"/bin/sh",
"-c",
command
]
}]
}
}
class TestClient(unittest.TestCase):
@classmethod
def setUpClass(cls):
cls.config = base.get_e2e_configuration()
def test_pod_apis(self):
client = api_client.ApiClient(configuration=self.config)
api = core_v1_api.CoreV1Api(client)
name = 'busybox-test-' + short_uuid()
pod_manifest = manifest_with_command(
name, "while true;do date;sleep 5; done")
# wait for the default service account to be created
timeout = time.time() + 30
while True:
if time.time() > timeout:
print('timeout waiting for default service account creation')
break
try:
resp = api.read_namespaced_service_account(name='default',
namespace='default')
except ApiException as e:
if (six.PY3 and e.status != HTTPStatus.NOT_FOUND) or (
six.PY3 is False and e.status != httplib.NOT_FOUND):
print('error: %s' % e)
self.fail(
msg="unexpected error getting default service account")
print('default service not found yet: %s' % e)
time.sleep(1)
continue
self.assertEqual('default', resp.metadata.name)
break
resp = api.create_namespaced_pod(body=pod_manifest,
namespace='default')
self.assertEqual(name, resp.metadata.name)
self.assertTrue(resp.status.phase)
while True:
resp = api.read_namespaced_pod(name=name,
namespace='default')
self.assertEqual(name, resp.metadata.name)
self.assertTrue(resp.status.phase)
if resp.status.phase != 'Pending':
break
time.sleep(1)
exec_command = ['/bin/sh',
'-c',
'for i in $(seq 1 3); do date; done']
resp = stream(api.connect_get_namespaced_pod_exec, name, 'default',
command=exec_command,
stderr=False, stdin=False,
stdout=True, tty=False)
print('EXEC response : %s (%s)' % (repr(resp), type(resp)))
self.assertIsInstance(resp, str)
self.assertEqual(3, len(resp.splitlines()))
exec_command = ['/bin/sh',
'-c',
'echo -n "This is a test string" | gzip']
resp = stream(api.connect_get_namespaced_pod_exec, name, 'default',
command=exec_command,
stderr=False, stdin=False,
stdout=True, tty=False,
binary=True)
print('EXEC response : %s (%s)' % (repr(resp), type(resp)))
self.assertIsInstance(resp, bytes)
self.assertEqual("This is a test string", gzip.decompress(resp).decode('utf-8'))
exec_command = 'uptime'
resp = stream(api.connect_post_namespaced_pod_exec, name, 'default',
command=exec_command,
stderr=False, stdin=False,
stdout=True, tty=False)
print('EXEC response : %s' % repr(resp))
self.assertEqual(1, len(resp.splitlines()))
resp = stream(api.connect_post_namespaced_pod_exec, name, 'default',
command='/bin/sh',
stderr=True, stdin=True,
stdout=True, tty=False,
_preload_content=False)
resp.write_stdin("echo test string 1\n")
line = resp.readline_stdout(timeout=5)
self.assertFalse(resp.peek_stderr())
self.assertEqual("test string 1", line)
resp.write_stdin("echo test string 2 >&2\n")
line = resp.readline_stderr(timeout=5)
self.assertFalse(resp.peek_stdout())
self.assertEqual("test string 2", line)
resp.write_stdin("exit\n")
resp.update(timeout=5)
while True:
line = resp.read_channel(ERROR_CHANNEL)
if line != '':
break
time.sleep(1)
status = json.loads(line)
self.assertEqual(status['status'], 'Success')
resp.update(timeout=5)
self.assertFalse(resp.is_open())
resp = stream(api.connect_post_namespaced_pod_exec, name, 'default',
command='/bin/sh',
stderr=True, stdin=True,
stdout=True, tty=False,
binary=True,
_preload_content=False)
resp.write_stdin(b"echo test string 1\n")
line = resp.readline_stdout(timeout=5)
self.assertFalse(resp.peek_stderr())
self.assertEqual(b"test string 1", line)
resp.write_stdin(b"echo test string 2 >&2\n")
line = resp.readline_stderr(timeout=5)
self.assertFalse(resp.peek_stdout())
self.assertEqual(b"test string 2", line)
resp.write_stdin(b"exit\n")
resp.update(timeout=5)
while True:
line = resp.read_channel(ERROR_CHANNEL)
if len(line) != 0:
break
time.sleep(1)
status = json.loads(line)
self.assertEqual(status['status'], 'Success')
resp.update(timeout=5)
self.assertFalse(resp.is_open())
number_of_pods = len(api.list_pod_for_all_namespaces().items)
self.assertTrue(number_of_pods > 0)
resp = api.delete_namespaced_pod(name=name, body={},
namespace='default')
def test_exit_code(self):
client = api_client.ApiClient(configuration=self.config)
api = core_v1_api.CoreV1Api(client)
name = 'busybox-test-' + short_uuid()
pod_manifest = manifest_with_command(
name, "while true;do date;sleep 5; done")
# wait for the default service account to be created
timeout = time.time() + 30
while True:
if time.time() > timeout:
print('timeout waiting for default service account creation')
break
try:
resp = api.read_namespaced_service_account(name='default',
namespace='default')
except ApiException as e:
if (six.PY3 and e.status != HTTPStatus.NOT_FOUND) or (
six.PY3 is False and e.status != httplib.NOT_FOUND):
print('error: %s' % e)
self.fail(
msg="unexpected error getting default service account")
print('default service not found yet: %s' % e)
time.sleep(1)
continue
self.assertEqual('default', resp.metadata.name)
break
resp = api.create_namespaced_pod(body=pod_manifest,
namespace='default')
self.assertEqual(name, resp.metadata.name)
self.assertTrue(resp.status.phase)
while True:
resp = api.read_namespaced_pod(name=name,
namespace='default')
self.assertEqual(name, resp.metadata.name)
self.assertTrue(resp.status.phase)
if resp.status.phase == 'Running':
break
time.sleep(1)
commands_expected_values = (
(["false", 1]),
(["/bin/sh", "-c", "sleep 1; exit 3"], 3),
(["true", 0]),
(["/bin/sh", "-c", "ls /"], 0)
)
for command, value in commands_expected_values:
client = stream(
api.connect_get_namespaced_pod_exec,
name,
'default',
command=command,
stderr=True,
stdin=False,
stdout=True,
tty=False,
_preload_content=False)
self.assertIsNone(client.returncode)
client.run_forever(timeout=10)
self.assertEqual(client.returncode, value)
self.assertEqual(client.returncode, value) # check idempotence
resp = api.delete_namespaced_pod(name=name, body={},
namespace='default')
def test_portforward_raw(self):
client = api_client.ApiClient(configuration=self.config)
api = core_v1_api.CoreV1Api(client)
with open(os.path.join(os.path.dirname(__file__), 'port_server.py')) as fh:
port_server_py = fh.read()
name = 'portforward-raw-' + short_uuid()
resp = api.create_namespaced_config_map(
body={
'apiVersion': 'v1',
'kind': 'ConfigMap',
'metadata': {
'name': name,
},
'data': {
'port-server.py': port_server_py,
}
},
namespace='default',
)
resp = api.create_namespaced_pod(
body={
'apiVersion': 'v1',
'kind': 'Pod',
'metadata': {
'name': name
},
'spec': {
'containers': [
{
'name': 'port-server',
'image': 'python',
'command': [
'python', '-u', '/opt/port-server.py', '1234', '1235',
],
'volumeMounts': [
{
'name': 'port-server',
'mountPath': '/opt',
'readOnly': True,
},
],
'startupProbe': {
'tcpSocket': {
'port': 1235,
},
'periodSeconds': 1,
'failureThreshold': 30,
},
},
],
'restartPolicy': 'Never',
'volumes': [
{
'name': 'port-server',
'configMap': {
'name': name,
},
},
],
},
},
namespace='default',
)
self.assertEqual(name, resp.metadata.name)
self.assertTrue(resp.status.phase)
timeout = time.time() + 60
while True:
resp = api.read_namespaced_pod(name=name,
namespace='default')
self.assertEqual(name, resp.metadata.name)
if resp.status.phase == 'Running':
if resp.status.container_statuses[0].ready:
break
else:
self.assertEqual(resp.status.phase, 'Pending')
self.assertTrue(time.time() < timeout)
time.sleep(1)
for ix in range(10):
ix = str(ix + 1).encode()
pf = portforward(api.connect_get_namespaced_pod_portforward,
name, 'default',
ports='1234,1235,1236')
self.assertTrue(pf.connected)
sock1234 = pf.socket(1234)
sock1235 = pf.socket(1235)
sock1234.setblocking(True)
sock1235.setblocking(True)
sent1234 = b'Test ' + ix + b' port 1234 forwarding'
sent1235 = b'Test ' + ix + b' port 1235 forwarding'
sock1234.sendall(sent1234)
sock1235.sendall(sent1235)
reply1234 = b''
reply1235 = b''
timeout = time.time() + 60
while reply1234 != sent1234 or reply1235 != sent1235:
self.assertNotEqual(sock1234.fileno(), -1)
self.assertNotEqual(sock1235.fileno(), -1)
self.assertTrue(time.time() < timeout)
r, _w, _x = select.select([sock1234, sock1235], [], [], 1)
if sock1234 in r:
data = sock1234.recv(1024)
self.assertNotEqual(data, b'', 'Unexpected socket close')
reply1234 += data
self.assertTrue(sent1234.startswith(reply1234))
if sock1235 in r:
data = sock1235.recv(1024)
self.assertNotEqual(data, b'', 'Unexpected socket close')
reply1235 += data
self.assertTrue(sent1235.startswith(reply1235))
self.assertTrue(pf.connected)
sock = pf.socket(1236)
sock.setblocking(True)
self.assertEqual(sock.recv(1024), b'')
self.assertIsNotNone(pf.error(1236))
sock.close()
for sock in (sock1234, sock1235):
self.assertTrue(pf.connected)
sent = b'Another test ' + ix + b' using fileno ' + str(sock.fileno()).encode()
sock.sendall(sent)
reply = b''
timeout = time.time() + 60
while reply != sent:
self.assertNotEqual(sock.fileno(), -1)
self.assertTrue(time.time() < timeout)
r, _w, _x = select.select([sock], [], [], 1)
if r:
data = sock.recv(1024)
self.assertNotEqual(data, b'', 'Unexpected socket close')
reply += data
self.assertTrue(sent.startswith(reply))
sock.close()
time.sleep(1)
self.assertFalse(pf.connected)
self.assertIsNone(pf.error(1234))
self.assertIsNone(pf.error(1235))
resp = api.delete_namespaced_pod(name=name, namespace='default')
resp = api.delete_namespaced_config_map(name=name, namespace='default')
def test_portforward_http(self):
client = api_client.ApiClient(configuration=self.config)
api = core_v1_api.CoreV1Api(client)
name = 'portforward-http-' + short_uuid()
pod_manifest = {
'apiVersion': 'v1',
'kind': 'Pod',
'metadata': {
'name': name
},
'spec': {
'containers': [{
'name': 'nginx',
'image': 'nginx',
}]
}
}
resp = api.create_namespaced_pod(body=pod_manifest,
namespace='default')
self.assertEqual(name, resp.metadata.name)
self.assertTrue(resp.status.phase)
while True:
resp = api.read_namespaced_pod(name=name,
namespace='default')
self.assertEqual(name, resp.metadata.name)
self.assertTrue(resp.status.phase)
if resp.status.phase != 'Pending':
break
time.sleep(1)
def kubernetes_create_connection(address, *args, **kwargs):
dns_name = address[0]
if isinstance(dns_name, bytes):
dns_name = dns_name.decode()
dns_name = dns_name.split(".")
if len(dns_name) != 3 or dns_name[2] != "kubernetes":
return socket_create_connection(address, *args, **kwargs)
pf = portforward(api.connect_get_namespaced_pod_portforward,
dns_name[0], dns_name[1], ports=str(address[1]))
return pf.socket(address[1])
socket_create_connection = socket.create_connection
try:
socket.create_connection = kubernetes_create_connection
response = urllib_request.urlopen(
'http://%s.default.kubernetes/' % name)
html = response.read().decode('utf-8')
finally:
socket.create_connection = socket_create_connection
self.assertEqual(response.code, 200)
self.assertTrue('<h1>Welcome to nginx!</h1>' in html)
resp = api.delete_namespaced_pod(name=name, body={},
namespace='default')
def test_service_apis(self):
client = api_client.ApiClient(configuration=self.config)
api = core_v1_api.CoreV1Api(client)
name = 'frontend-' + short_uuid()
service_manifest = {'apiVersion': 'v1',
'kind': 'Service',
'metadata': {'labels': {'name': name},
'name': name,
'resourceversion': 'v1'},
'spec': {'ports': [{'name': 'port',
'port': 80,
'protocol': 'TCP',
'targetPort': 80}],
'selector': {'name': name}}}
resp = api.create_namespaced_service(body=service_manifest,
namespace='default')
self.assertEqual(name, resp.metadata.name)
self.assertTrue(resp.status)
resp = api.read_namespaced_service(name=name,
namespace='default')
self.assertEqual(name, resp.metadata.name)
self.assertTrue(resp.status)
service_manifest['spec']['ports'] = [{'name': 'new',
'port': 8080,
'protocol': 'TCP',
'targetPort': 8080}]
resp = api.patch_namespaced_service(body=service_manifest,
name=name,
namespace='default')
self.assertEqual(2, len(resp.spec.ports))
self.assertTrue(resp.status)
resp = api.delete_namespaced_service(name=name, body={},
namespace='default')
def test_replication_controller_apis(self):
client = api_client.ApiClient(configuration=self.config)
api = core_v1_api.CoreV1Api(client)
name = 'frontend-' + short_uuid()
rc_manifest = {
'apiVersion': 'v1',
'kind': 'ReplicationController',
'metadata': {'labels': {'name': name},
'name': name},
'spec': {'replicas': 2,
'selector': {'name': name},
'template': {'metadata': {
'labels': {'name': name}},
'spec': {'containers': [{
'image': 'nginx',
'name': 'nginx',
'ports': [{'containerPort': 80,
'protocol': 'TCP'}]}]}}}}
resp = api.create_namespaced_replication_controller(
body=rc_manifest, namespace='default')
self.assertEqual(name, resp.metadata.name)
self.assertEqual(2, resp.spec.replicas)
resp = api.read_namespaced_replication_controller(
name=name, namespace='default')
self.assertEqual(name, resp.metadata.name)
self.assertEqual(2, resp.spec.replicas)
resp = api.delete_namespaced_replication_controller(
name=name, namespace='default', propagation_policy='Background')
def test_configmap_apis(self):
client = api_client.ApiClient(configuration=self.config)
api = core_v1_api.CoreV1Api(client)
name = 'test-configmap-' + short_uuid()
test_configmap = {
"kind": "ConfigMap",
"apiVersion": "v1",
"metadata": {
"name": name,
"labels": {"e2e-tests": "true"},
},
"data": {
"config.json": "{\"command\":\"/usr/bin/mysqld_safe\"}",
"frontend.cnf": "[mysqld]\nbind-address = 10.0.0.3\nport = 3306\n"
}
}
resp = api.create_namespaced_config_map(
body=test_configmap, namespace='default'
)
self.assertEqual(name, resp.metadata.name)
resp = api.read_namespaced_config_map(
name=name, namespace='default')
self.assertEqual(name, resp.metadata.name)
json_patch_name = "json_patch_name"
json_patch_body = [{"op": "replace", "path": "/data",
"value": {"new_value": json_patch_name}}]
resp = api.patch_namespaced_config_map(
name=name, namespace='default', body=json_patch_body)
self.assertEqual(json_patch_name, resp.data["new_value"])
self.assertEqual(None, resp.data.get("config.json"))
self.assertEqual(None, resp.data.get("frontend.cnf"))
merge_patch_name = "merge_patch_name"
merge_patch_body = {"data": {"new_value": merge_patch_name}}
resp = api.patch_namespaced_config_map(
name=name, namespace='default', body=merge_patch_body)
self.assertEqual(merge_patch_name, resp.data["new_value"])
self.assertEqual(None, resp.data.get("config.json"))
self.assertEqual(None, resp.data.get("frontend.cnf"))
resp = api.delete_namespaced_config_map(
name=name, body={}, namespace='default')
resp = api.list_namespaced_config_map(
'default', pretty=True, label_selector="e2e-tests=true")
self.assertEqual([], resp.items)
def test_node_apis(self):
client = api_client.ApiClient(configuration=self.config)
api = core_v1_api.CoreV1Api(client)
for item in api.list_node().items:
node = api.read_node(name=item.metadata.name)
self.assertTrue(len(node.metadata.labels) > 0)
self.assertTrue(isinstance(node.metadata.labels, dict))