forked from goto-opensource/k8s-node-drainer
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test_main.py
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test_main.py
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import unittest
import unittest.mock
import datetime
from kubernetes import client
import main
args = main.parse_args([])
now = datetime.datetime.utcnow().replace(microsecond=0)
class TestNodeReplacer(unittest.TestCase):
def setUp(self) -> None:
self.maxDiff = None
def test_generate_action_plan(self):
mock_input = {
'all_nodes': [
client.V1Node(metadata=client.V1ObjectMeta(
name='node-1',
creation_timestamp=(now - datetime.timedelta(days=30.1)),
annotations={}
), spec=client.V1NodeSpec(unschedulable=False)),
client.V1Node(metadata=client.V1ObjectMeta(
name='node-2',
creation_timestamp=(now - datetime.timedelta(days=60)),
annotations={}
), spec=client.V1NodeSpec(unschedulable=False)),
client.V1Node(metadata=client.V1ObjectMeta(
name='node-3',
creation_timestamp=(now - datetime.timedelta(days=30.2)),
annotations={}
), spec=client.V1NodeSpec(unschedulable=True)),
client.V1Node(metadata=client.V1ObjectMeta(
name='node-4',
creation_timestamp=(now - datetime.timedelta(days=30.3)),
annotations={
main.annotation('cordoned'): '',
}
), spec=client.V1NodeSpec(unschedulable=False)),
client.V1Node(metadata=client.V1ObjectMeta(
name='node-4',
creation_timestamp=(now - datetime.timedelta(days=30.4)),
annotations={
main.annotation('cordoned'): '',
}
), spec=client.V1NodeSpec(
unschedulable=True,
taints=[
client.V1Taint(
key='node.kubernetes.io/unschedulable',
effect='NoSchedule',
time_added=(now - datetime.timedelta(hours=1)),
)
]
)),
client.V1Node(metadata=client.V1ObjectMeta(
name='node-5',
creation_timestamp=(now - datetime.timedelta(days=32.5)),
annotations={
main.annotation('cordoned'): '',
}
), spec=client.V1NodeSpec(
unschedulable=True,
taints=[
client.V1Taint(
key='node.kubernetes.io/unschedulable',
effect='NoSchedule',
time_added=(now - datetime.timedelta(days=1.2)),
)
]
)),
client.V1Node(metadata=client.V1ObjectMeta(
name='node-6',
creation_timestamp=(now - datetime.timedelta(days=35)),
annotations={
main.annotation('cordoned'): '',
}
), spec=client.V1NodeSpec(
unschedulable=True,
taints=[
client.V1Taint(
key='node.kubernetes.io/unschedulable',
effect='NoSchedule',
time_added=(now - datetime.timedelta(days=2)),
)
]
)),
client.V1Node(metadata=client.V1ObjectMeta(
name='node-7',
creation_timestamp=(now - datetime.timedelta(days=35)),
annotations={
main.annotation('cordoned'): '',
main.annotation('notifications-sent'): str(int((datetime.datetime.utcnow() - datetime.timedelta(days=2.5)).timestamp())),
}
), spec=client.V1NodeSpec(
unschedulable=True,
taints=[
client.V1Taint(
key='node.kubernetes.io/unschedulable',
effect='NoSchedule',
time_added=(now - datetime.timedelta(days=4)),
)
]
)),
],
'all_namespaces': [
client.V1Namespace(metadata=client.V1ObjectMeta(
name='ns-1',
annotations={
'annotation-1': 'bla',
})),
client.V1Namespace(metadata=client.V1ObjectMeta(
name='ns-2',
annotations={
'annotation-2': 'blub',
}))
],
'all_pods': [
client.V1Pod(
metadata=client.V1ObjectMeta(namespace='ns-1', name='pod-1', annotations={
'annotation-3': '123',
}),
spec=client.V1PodSpec(node_name='node-5', containers=[])),
client.V1Pod(
metadata=client.V1ObjectMeta(namespace='ns-2', name='pod-2', annotations={
'annotation-4': '456',
}),
spec=client.V1PodSpec(node_name='node-6', containers=[])),
client.V1Pod(
metadata=client.V1ObjectMeta(namespace='ns-2', name='pod-3', annotations={
'annotation-5': '789',
}),
spec=client.V1PodSpec(node_name='node-7', containers=[])),
],
'args': args,
}
expected_result = {
'cordon': {
'nodes': ['node-1', 'node-2', 'node-4'],
'affected_pods': []
},
'notify': {
'nodes': ['node-5', 'node-6'],
'affected_pods': [
{
'namespace': 'ns-1',
'name': 'pod-1',
'annotations': {
'annotation-1': 'bla',
'annotation-3': '123',
},
'eviction_time': '2 days from now',
},
{
'namespace': 'ns-2',
'name': 'pod-2',
'annotations': {
'annotation-2': 'blub',
'annotation-4': '456',
},
'eviction_time': '2 days from now',
},
]
},
'drain': {
'nodes': ['node-7'],
'affected_pods': [
{
'namespace': 'ns-2',
'name': 'pod-3',
'annotations': {
'annotation-2': 'blub',
'annotation-5': '789',
},
'eviction_time': None,
},
]
},
}
self.assertEqual(expected_result, main.generate_action_plan(**mock_input))
def test_notify(self):
with unittest.mock.patch('requests.post') as mock:
main.notify(
[
{
'namespace': 'ns-1',
'name': 'pod-1',
'annotations': {
'logmein.com/slack': '#some-team',
},
'eviction_time': 'a day from now',
},
{
'namespace': 'ns-2',
'name': 'pod-2',
'annotations': {
'logmein.com/slack': '@some.person',
},
'eviction_time': '21 hours from now',
},
],
main.parse_args([
'--slack-webhook=https://slack-test.com/',
'--slack-target=#admin-notifications',
'--slack-admin-contact=#admin-team',
'--slack-target-annotation=logmein.com/slack',
]),
)
self.assertEqual(len(mock.mock_calls), 3)
self.assertTrue(any(
(
c[2]['json']['channel'] == '#some-team' and
len(c[2]['json']['attachments']) == 1 and
'#admin-team' in c[2]['json']['text'] and
'a day from now' in c[2]['json']['attachments'][0]['pretext'] and
'ns-1' in c[2]['json']['attachments'][0]['text'] and
'pod-1' in c[2]['json']['attachments'][0]['text']
)
for c in mock.mock_calls
))
self.assertTrue(any(
(
c[2]['json']['channel'] == '@some.person' and
len(c[2]['json']['attachments']) == 1 and
'#admin-team' in c[2]['json']['text'] and
'21 hours from now' in c[2]['json']['attachments'][0]['pretext'] and
'ns-2' in c[2]['json']['attachments'][0]['text'] and
'pod-2' in c[2]['json']['attachments'][0]['text']
)
for c in mock.mock_calls
))
self.assertTrue(any(
(
c[2]['json']['channel'] == '#admin-notifications' and
len(c[2]['json']['attachments']) == 2 and
'#admin-team' in c[2]['json']['text'] and
any(
(
'a day from now' in a['pretext'] and
'ns-1' in a['text'] and
'pod-1' in a['text']
) for a in c[2]['json']['attachments']
) and
any(
(
'21 hours from now' in a['pretext'] and
'ns-2' in a['text'] and
'pod-2' in a['text']
) for a in c[2]['json']['attachments']
)
)
for c in mock.mock_calls
))
if __name__ == '__main__':
unittest.main()