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test_kubernetes_pod_operator.py
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test_kubernetes_pod_operator.py
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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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.
from __future__ import annotations
import json
import logging
import os
import shutil
from copy import copy
from unittest import mock
from unittest.mock import ANY, MagicMock
from uuid import uuid4
import pytest
from kubernetes import client
from kubernetes.client import V1EnvVar, V1PodSecurityContext, V1SecurityContext, models as k8s
from kubernetes.client.api_client import ApiClient
from kubernetes.client.rest import ApiException
from airflow.exceptions import AirflowException, AirflowSkipException
from airflow.models.connection import Connection
from airflow.models.dag import DAG
from airflow.models.dagrun import DagRun
from airflow.models.taskinstance import TaskInstance
from airflow.providers.cncf.kubernetes.hooks.kubernetes import KubernetesHook
from airflow.providers.cncf.kubernetes.operators.pod import KubernetesPodOperator
from airflow.providers.cncf.kubernetes.utils.pod_manager import OnFinishAction, PodManager
from airflow.utils import timezone
from airflow.utils.context import Context
from airflow.utils.types import DagRunType
from airflow.version import version as airflow_version
from kubernetes_tests.test_base import BaseK8STest, StringContainingId
HOOK_CLASS = "airflow.providers.cncf.kubernetes.operators.pod.KubernetesHook"
POD_MANAGER_CLASS = "airflow.providers.cncf.kubernetes.utils.pod_manager.PodManager"
def create_context(task) -> Context:
dag = DAG(dag_id="dag", schedule=None)
execution_date = timezone.datetime(
2016, 1, 1, 1, 0, 0, tzinfo=timezone.parse_timezone("Europe/Amsterdam")
)
dag_run = DagRun(
dag_id=dag.dag_id,
execution_date=execution_date,
run_id=DagRun.generate_run_id(DagRunType.MANUAL, execution_date),
)
task_instance = TaskInstance(task=task)
task_instance.dag_run = dag_run
task_instance.dag_id = dag.dag_id
task_instance.try_number = 1
task_instance.xcom_push = mock.Mock() # type: ignore
return Context(
dag=dag,
run_id=dag_run.run_id,
task=task,
ti=task_instance,
task_instance=task_instance,
)
@pytest.fixture(scope="session")
def kubeconfig_path():
kubeconfig_path = os.environ.get("KUBECONFIG")
return kubeconfig_path or os.path.expanduser("~/.kube/config")
@pytest.fixture
def test_label(request):
label = "".join(c for c in f"{request.node.cls.__name__}.{request.node.name}" if c.isalnum()).lower()
return label[-63:]
@pytest.fixture
def mock_get_connection():
with mock.patch(f"{HOOK_CLASS}.get_connection", return_value=Connection(conn_id="kubernetes_default")):
yield
@pytest.mark.execution_timeout(180)
@pytest.mark.usefixtures("mock_get_connection")
class TestKubernetesPodOperatorSystem:
@pytest.fixture(autouse=True)
def setup_tests(self, test_label):
self.api_client = ApiClient()
self.labels = {"test_label": test_label}
self.expected_pod = {
"apiVersion": "v1",
"kind": "Pod",
"metadata": {
"namespace": "default",
"name": ANY,
"annotations": {},
"labels": {
"test_label": test_label,
"kubernetes_pod_operator": "True",
"airflow_version": airflow_version.replace("+", "-"),
"airflow_kpo_in_cluster": "False",
"run_id": "manual__2016-01-01T0100000100-da4d1ce7b",
"dag_id": "dag",
"task_id": ANY,
"try_number": "1",
},
},
"spec": {
"affinity": {},
"containers": [
{
"image": "ubuntu:16.04",
"args": ["echo 10"],
"command": ["bash", "-cx"],
"env": [],
"envFrom": [],
"name": "base",
"ports": [],
"terminationMessagePolicy": "File",
"volumeMounts": [],
}
],
"hostNetwork": False,
"imagePullSecrets": [],
"initContainers": [],
"nodeSelector": {},
"restartPolicy": "Never",
"securityContext": {},
"tolerations": [],
"volumes": [],
},
}
yield
hook = KubernetesHook(conn_id=None, in_cluster=False)
client = hook.core_v1_client
client.delete_collection_namespaced_pod(namespace="default", grace_period_seconds=0)
def _get_labels_selector(self) -> str | None:
if not self.labels:
return None
return ",".join([f"{key}={value}" for key, value in enumerate(self.labels)])
def test_do_xcom_push_defaults_false(self, kubeconfig_path, mock_get_connection, tmp_path):
new_config_path = tmp_path / "kube_config.cfg"
shutil.copy(kubeconfig_path, new_config_path)
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
config_file=os.fspath(new_config_path),
)
assert not k.do_xcom_push
def test_config_path_move(self, kubeconfig_path, mock_get_connection, tmp_path):
new_config_path = tmp_path / "kube_config.cfg"
shutil.copy(kubeconfig_path, new_config_path)
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
on_finish_action=OnFinishAction.KEEP_POD,
config_file=os.fspath(new_config_path),
)
context = create_context(k)
k.execute(context)
expected_pod = copy(self.expected_pod)
actual_pod = self.api_client.sanitize_for_serialization(k.pod)
assert actual_pod == expected_pod
def test_working_pod(self, mock_get_connection):
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
)
context = create_context(k)
k.execute(context)
actual_pod = self.api_client.sanitize_for_serialization(k.pod)
assert self.expected_pod["spec"] == actual_pod["spec"]
assert self.expected_pod["metadata"]["labels"] == actual_pod["metadata"]["labels"]
def test_skip_cleanup(self, mock_get_connection):
k = KubernetesPodOperator(
namespace="unknown",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
)
context = create_context(k)
with pytest.raises(ApiException):
k.execute(context)
def test_delete_operator_pod(self, mock_get_connection):
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
on_finish_action=OnFinishAction.DELETE_POD,
)
context = create_context(k)
k.execute(context)
actual_pod = self.api_client.sanitize_for_serialization(k.pod)
assert self.expected_pod["spec"] == actual_pod["spec"]
assert self.expected_pod["metadata"]["labels"] == actual_pod["metadata"]["labels"]
def test_skip_on_specified_exit_code(self, mock_get_connection):
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["exit 42"],
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
on_finish_action=OnFinishAction.DELETE_POD,
skip_on_exit_code=42,
)
context = create_context(k)
with pytest.raises(AirflowSkipException):
k.execute(context)
def test_already_checked_on_success(self, mock_get_connection):
"""
When ``on_finish_action="keep_pod"``, pod should have 'already_checked'
label, whether pod is successful or not.
"""
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
on_finish_action=OnFinishAction.KEEP_POD,
)
context = create_context(k)
k.execute(context)
actual_pod = k.find_pod("default", context, exclude_checked=False)
actual_pod = self.api_client.sanitize_for_serialization(actual_pod)
assert actual_pod["metadata"]["labels"]["already_checked"] == "True"
def test_already_checked_on_failure(self, mock_get_connection):
"""
When ``on_finish_action="keep_pod"``, pod should have 'already_checked'
label, whether pod is successful or not.
"""
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["lalala"],
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
on_finish_action=OnFinishAction.KEEP_POD,
)
context = create_context(k)
with pytest.raises(AirflowException):
k.execute(context)
actual_pod = k.find_pod("default", context, exclude_checked=False)
actual_pod = self.api_client.sanitize_for_serialization(actual_pod)
status = next(x for x in actual_pod["status"]["containerStatuses"] if x["name"] == "base")
assert status["state"]["terminated"]["reason"] == "Error"
assert actual_pod["metadata"]["labels"]["already_checked"] == "True"
def test_pod_hostnetwork(self, mock_get_connection):
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
hostnetwork=True,
)
context = create_context(k)
k.execute(context)
actual_pod = self.api_client.sanitize_for_serialization(k.pod)
self.expected_pod["spec"]["hostNetwork"] = True
assert self.expected_pod["spec"] == actual_pod["spec"]
assert self.expected_pod["metadata"]["labels"] == actual_pod["metadata"]["labels"]
def test_pod_dnspolicy(self, mock_get_connection):
dns_policy = "ClusterFirstWithHostNet"
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
hostnetwork=True,
dnspolicy=dns_policy,
)
context = create_context(k)
k.execute(context)
actual_pod = self.api_client.sanitize_for_serialization(k.pod)
self.expected_pod["spec"]["hostNetwork"] = True
self.expected_pod["spec"]["dnsPolicy"] = dns_policy
assert self.expected_pod["spec"] == actual_pod["spec"]
assert self.expected_pod["metadata"]["labels"] == actual_pod["metadata"]["labels"]
def test_pod_schedulername(self, mock_get_connection):
scheduler_name = "default-scheduler"
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
schedulername=scheduler_name,
)
context = create_context(k)
k.execute(context)
actual_pod = self.api_client.sanitize_for_serialization(k.pod)
self.expected_pod["spec"]["schedulerName"] = scheduler_name
assert self.expected_pod == actual_pod
def test_pod_node_selector(self, mock_get_connection):
node_selector = {"beta.kubernetes.io/os": "linux"}
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
node_selector=node_selector,
)
context = create_context(k)
k.execute(context)
actual_pod = self.api_client.sanitize_for_serialization(k.pod)
self.expected_pod["spec"]["nodeSelector"] = node_selector
assert self.expected_pod == actual_pod
def test_pod_resources(self, mock_get_connection):
resources = k8s.V1ResourceRequirements(
requests={"memory": "64Mi", "cpu": "250m", "ephemeral-storage": "1Gi"},
limits={"memory": "64Mi", "cpu": 0.25, "nvidia.com/gpu": None, "ephemeral-storage": "2Gi"},
)
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
container_resources=resources,
)
context = create_context(k)
k.execute(context)
actual_pod = self.api_client.sanitize_for_serialization(k.pod)
self.expected_pod["spec"]["containers"][0]["resources"] = {
"requests": {"memory": "64Mi", "cpu": "250m", "ephemeral-storage": "1Gi"},
"limits": {"memory": "64Mi", "cpu": 0.25, "nvidia.com/gpu": None, "ephemeral-storage": "2Gi"},
}
assert self.expected_pod == actual_pod
@pytest.mark.parametrize(
"val",
[
pytest.param(
k8s.V1Affinity(
node_affinity=k8s.V1NodeAffinity(
required_during_scheduling_ignored_during_execution=k8s.V1NodeSelector(
node_selector_terms=[
k8s.V1NodeSelectorTerm(
match_expressions=[
k8s.V1NodeSelectorRequirement(
key="beta.kubernetes.io/os",
operator="In",
values=["linux"],
)
]
)
]
)
)
),
id="current",
),
pytest.param(
{
"nodeAffinity": {
"requiredDuringSchedulingIgnoredDuringExecution": {
"nodeSelectorTerms": [
{
"matchExpressions": [
{
"key": "beta.kubernetes.io/os",
"operator": "In",
"values": ["linux"],
}
]
}
]
}
}
},
id="backcompat",
),
],
)
def test_pod_affinity(self, val, mock_get_connection):
expected = {
"nodeAffinity": {
"requiredDuringSchedulingIgnoredDuringExecution": {
"nodeSelectorTerms": [
{
"matchExpressions": [
{"key": "beta.kubernetes.io/os", "operator": "In", "values": ["linux"]}
]
}
]
}
}
}
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
affinity=val,
)
context = create_context(k)
k.execute(context=context)
actual_pod = self.api_client.sanitize_for_serialization(k.pod)
self.expected_pod["spec"]["affinity"] = expected
assert self.expected_pod == actual_pod
def test_port(self, mock_get_connection):
port = k8s.V1ContainerPort(
name="http",
container_port=80,
)
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
ports=[port],
)
context = create_context(k)
k.execute(context=context)
actual_pod = self.api_client.sanitize_for_serialization(k.pod)
self.expected_pod["spec"]["containers"][0]["ports"] = [{"name": "http", "containerPort": 80}]
assert self.expected_pod == actual_pod
def test_volume_mount(self, mock_get_connection):
with mock.patch.object(PodManager, "log") as mock_logger:
volume_mount = k8s.V1VolumeMount(
name="test-volume", mount_path="/tmp/test_volume", sub_path=None, read_only=False
)
volume = k8s.V1Volume(
name="test-volume",
persistent_volume_claim=k8s.V1PersistentVolumeClaimVolumeSource(claim_name="test-volume"),
)
args = [
'echo "retrieved from mount" > /tmp/test_volume/test.txt && cat /tmp/test_volume/test.txt'
]
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=args,
labels=self.labels,
volume_mounts=[volume_mount],
volumes=[volume],
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
)
context = create_context(k)
k.execute(context=context)
mock_logger.info.assert_any_call("[%s] %s", "base", StringContainingId("retrieved from mount"))
actual_pod = self.api_client.sanitize_for_serialization(k.pod)
self.expected_pod["spec"]["containers"][0]["args"] = args
self.expected_pod["spec"]["containers"][0]["volumeMounts"] = [
{"name": "test-volume", "mountPath": "/tmp/test_volume", "readOnly": False}
]
self.expected_pod["spec"]["volumes"] = [
{"name": "test-volume", "persistentVolumeClaim": {"claimName": "test-volume"}}
]
assert self.expected_pod == actual_pod
@pytest.mark.parametrize("uid", [0, 1000])
def test_run_as_user(self, uid, mock_get_connection):
security_context = V1PodSecurityContext(run_as_user=uid)
name = str(uuid4())
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
task_id=name,
name=name,
random_name_suffix=False,
on_finish_action=OnFinishAction.KEEP_POD,
in_cluster=False,
do_xcom_push=False,
security_context=security_context,
)
context = create_context(k)
k.execute(context)
pod = k.hook.core_v1_client.read_namespaced_pod(
name=name,
namespace="default",
)
assert pod.to_dict()["spec"]["security_context"]["run_as_user"] == uid
@pytest.mark.parametrize("gid", [0, 1000])
def test_fs_group(self, gid, mock_get_connection):
security_context = V1PodSecurityContext(fs_group=gid)
name = str(uuid4())
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
task_id=name,
name=name,
random_name_suffix=False,
on_finish_action=OnFinishAction.KEEP_POD,
in_cluster=False,
do_xcom_push=False,
security_context=security_context,
)
context = create_context(k)
k.execute(context)
pod = k.hook.core_v1_client.read_namespaced_pod(
name=name,
namespace="default",
)
assert pod.to_dict()["spec"]["security_context"]["fs_group"] == gid
def test_disable_privilege_escalation(self, mock_get_connection):
container_security_context = V1SecurityContext(allow_privilege_escalation=False)
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
container_security_context=container_security_context,
)
context = create_context(k)
k.execute(context)
actual_pod = self.api_client.sanitize_for_serialization(k.pod)
self.expected_pod["spec"]["containers"][0]["securityContext"] = {
"allowPrivilegeEscalation": container_security_context.allow_privilege_escalation
}
assert self.expected_pod == actual_pod
def test_faulty_image(self, mock_get_connection):
bad_image_name = "foobar"
k = KubernetesPodOperator(
namespace="default",
image=bad_image_name,
cmds=["bash", "-cx"],
arguments=["echo 10"],
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
startup_timeout_seconds=5,
)
context = create_context(k)
with pytest.raises(AirflowException, match="Pod .* returned a failure"):
k.execute(context)
actual_pod = self.api_client.sanitize_for_serialization(k.pod)
self.expected_pod["spec"]["containers"][0]["image"] = bad_image_name
assert self.expected_pod == actual_pod
def test_faulty_service_account(self, mock_get_connection):
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
startup_timeout_seconds=5,
service_account_name="foobar",
)
context = create_context(k)
pod = k.build_pod_request_obj(context)
with pytest.raises(ApiException, match="error looking up service account default/foobar"):
k.get_or_create_pod(pod, context)
def test_pod_failure(self, mock_get_connection):
"""
Tests that the task fails when a pod reports a failure
"""
bad_internal_command = ["foobar 10 "]
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=bad_internal_command,
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
)
context = create_context(k)
with pytest.raises(AirflowException, match="Pod .* returned a failure"):
k.execute(context)
actual_pod = self.api_client.sanitize_for_serialization(k.pod)
self.expected_pod["spec"]["containers"][0]["args"] = bad_internal_command
assert self.expected_pod == actual_pod
def test_xcom_push(self, test_label, mock_get_connection):
expected = {"test_label": test_label, "buzz": 2}
args = [f"echo '{json.dumps(expected)}' > /airflow/xcom/return.json"]
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=args,
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=True,
)
context = create_context(k)
assert k.execute(context) == expected
def test_env_vars(self, mock_get_connection):
# WHEN
env_vars = [
k8s.V1EnvVar(name="ENV1", value="val1"),
k8s.V1EnvVar(name="ENV2", value="val2"),
k8s.V1EnvVar(
name="ENV3",
value_from=k8s.V1EnvVarSource(field_ref=k8s.V1ObjectFieldSelector(field_path="status.podIP")),
),
]
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
env_vars=env_vars,
labels=self.labels,
task_id=str(uuid4()),
in_cluster=False,
do_xcom_push=False,
)
# THEN
context = create_context(k)
actual_pod = self.api_client.sanitize_for_serialization(k.build_pod_request_obj(context))
self.expected_pod["spec"]["containers"][0]["env"] = [
{"name": "ENV1", "value": "val1"},
{"name": "ENV2", "value": "val2"},
{"name": "ENV3", "valueFrom": {"fieldRef": {"fieldPath": "status.podIP"}}},
]
assert self.expected_pod == actual_pod
def test_pod_template_file_system(self, mock_get_connection, basic_pod_template):
"""Note: this test requires that you have a namespace ``mem-example`` in your cluster."""
k = KubernetesPodOperator(
task_id=str(uuid4()),
in_cluster=False,
labels=self.labels,
pod_template_file=basic_pod_template.as_posix(),
do_xcom_push=True,
)
context = create_context(k)
result = k.execute(context)
assert result is not None
assert result == {"hello": "world"}
@pytest.mark.parametrize(
"env_vars",
[
pytest.param([k8s.V1EnvVar(name="env_name", value="value")], id="current"),
pytest.param({"env_name": "value"}, id="backcompat"), # todo: remove?
],
)
def test_pod_template_file_with_overrides_system(
self, env_vars, test_label, mock_get_connection, basic_pod_template
):
k = KubernetesPodOperator(
task_id=str(uuid4()),
labels=self.labels,
env_vars=env_vars,
in_cluster=False,
pod_template_file=basic_pod_template.as_posix(),
do_xcom_push=True,
)
context = create_context(k)
result = k.execute(context)
assert result is not None
assert k.pod.metadata.labels == {
"test_label": test_label,
"airflow_version": mock.ANY,
"airflow_kpo_in_cluster": "False",
"dag_id": "dag",
"run_id": "manual__2016-01-01T0100000100-da4d1ce7b",
"kubernetes_pod_operator": "True",
"task_id": mock.ANY,
"try_number": "1",
}
assert k.pod.spec.containers[0].env == [k8s.V1EnvVar(name="env_name", value="value")]
assert result == {"hello": "world"}
def test_pod_template_file_with_full_pod_spec(self, test_label, mock_get_connection, basic_pod_template):
pod_spec = k8s.V1Pod(
metadata=k8s.V1ObjectMeta(
labels={"test_label": test_label, "fizz": "buzz"},
),
spec=k8s.V1PodSpec(
containers=[
k8s.V1Container(
name="base",
env=[k8s.V1EnvVar(name="env_name", value="value")],
)
]
),
)
k = KubernetesPodOperator(
task_id=str(uuid4()),
labels=self.labels,
in_cluster=False,
pod_template_file=basic_pod_template.as_posix(),
full_pod_spec=pod_spec,
do_xcom_push=True,
)
context = create_context(k)
result = k.execute(context)
assert result is not None
assert k.pod.metadata.labels == {
"fizz": "buzz",
"test_label": test_label,
"airflow_version": mock.ANY,
"airflow_kpo_in_cluster": "False",
"dag_id": "dag",
"run_id": "manual__2016-01-01T0100000100-da4d1ce7b",
"kubernetes_pod_operator": "True",
"task_id": mock.ANY,
"try_number": "1",
}
assert k.pod.spec.containers[0].env == [k8s.V1EnvVar(name="env_name", value="value")]
assert result == {"hello": "world"}
def test_full_pod_spec(self, test_label, mock_get_connection):
pod_spec = k8s.V1Pod(
metadata=k8s.V1ObjectMeta(
labels={"test_label": test_label, "fizz": "buzz"}, namespace="default", name="test-pod"
),
spec=k8s.V1PodSpec(
containers=[
k8s.V1Container(
name="base",
image="perl",
command=["/bin/bash"],
args=["-c", 'echo {\\"hello\\" : \\"world\\"} | cat > /airflow/xcom/return.json'],
env=[k8s.V1EnvVar(name="env_name", value="value")],
)
],
restart_policy="Never",
),
)
k = KubernetesPodOperator(
task_id=str(uuid4()),
in_cluster=False,
labels=self.labels,
full_pod_spec=pod_spec,
do_xcom_push=True,
on_finish_action=OnFinishAction.KEEP_POD,
startup_timeout_seconds=30,
)
context = create_context(k)
result = k.execute(context)
assert result is not None
assert k.pod.metadata.labels == {
"fizz": "buzz",
"test_label": test_label,
"airflow_version": mock.ANY,
"airflow_kpo_in_cluster": "False",
"dag_id": "dag",
"run_id": "manual__2016-01-01T0100000100-da4d1ce7b",
"kubernetes_pod_operator": "True",
"task_id": mock.ANY,
"try_number": "1",
}
assert k.pod.spec.containers[0].env == [k8s.V1EnvVar(name="env_name", value="value")]
assert result == {"hello": "world"}
def test_init_container(self, mock_get_connection):
# GIVEN
volume_mounts = [
k8s.V1VolumeMount(mount_path="/etc/foo", name="test-volume", sub_path=None, read_only=True)
]
init_environments = [
k8s.V1EnvVar(name="key1", value="value1"),
k8s.V1EnvVar(name="key2", value="value2"),
]
init_container = k8s.V1Container(
name="init-container",
image="ubuntu:16.04",
env=init_environments,
volume_mounts=volume_mounts,
command=["bash", "-cx"],
args=["echo 10"],
)
volume = k8s.V1Volume(
name="test-volume",
persistent_volume_claim=k8s.V1PersistentVolumeClaimVolumeSource(claim_name="test-volume"),
)
expected_init_container = {
"name": "init-container",
"image": "ubuntu:16.04",
"command": ["bash", "-cx"],
"args": ["echo 10"],
"env": [{"name": "key1", "value": "value1"}, {"name": "key2", "value": "value2"}],
"volumeMounts": [{"mountPath": "/etc/foo", "name": "test-volume", "readOnly": True}],
}
k = KubernetesPodOperator(
namespace="default",
image="ubuntu:16.04",
cmds=["bash", "-cx"],
arguments=["echo 10"],
labels=self.labels,
task_id=str(uuid4()),
volumes=[volume],
init_containers=[init_container],
in_cluster=False,
do_xcom_push=False,
)
context = create_context(k)
k.execute(context)
actual_pod = self.api_client.sanitize_for_serialization(k.pod)
self.expected_pod["spec"]["initContainers"] = [expected_init_container]
self.expected_pod["spec"]["volumes"] = [
{"name": "test-volume", "persistentVolumeClaim": {"claimName": "test-volume"}}
]
assert self.expected_pod == actual_pod
@mock.patch(f"{POD_MANAGER_CLASS}.await_xcom_sidecar_container_start")
@mock.patch(f"{POD_MANAGER_CLASS}.extract_xcom")
@mock.patch(f"{POD_MANAGER_CLASS}.await_pod_completion")
@mock.patch(f"{POD_MANAGER_CLASS}.create_pod", new=MagicMock)
@mock.patch(HOOK_CLASS)
def test_pod_template_file(
self,
hook_mock,
await_pod_completion_mock,
extract_xcom_mock,
await_xcom_sidecar_container_start_mock,
caplog,
test_label,
pod_template,
):
# todo: This isn't really a system test
await_xcom_sidecar_container_start_mock.return_value = None
hook_mock.return_value.is_in_cluster = False
hook_mock.return_value.get_xcom_sidecar_container_image.return_value = None
hook_mock.return_value.get_xcom_sidecar_container_resources.return_value = None
hook_mock.return_value.get_connection.return_value = Connection(conn_id="kubernetes_default")
extract_xcom_mock.return_value = "{}"
k = KubernetesPodOperator(
task_id=str(uuid4()),
labels=self.labels,
random_name_suffix=False,
pod_template_file=pod_template.as_posix(),
do_xcom_push=True,
)
pod_mock = MagicMock()
pod_mock.status.phase = "Succeeded"
await_pod_completion_mock.return_value = pod_mock
context = create_context(k)
# I'm not really sure what the point is of this assert
with caplog.at_level(logging.DEBUG, logger="airflow.task.operators"):
k.execute(context)
expected_lines = [
"Starting pod:",
"api_version: v1",
"kind: Pod",
"metadata:",
" annotations: {}",
" creation_timestamp: null",
" deletion_grace_period_seconds: null",
]
actual = next(x.getMessage() for x in caplog.records if x.msg == "Starting pod:\n%s").splitlines()
assert actual[: len(expected_lines)] == expected_lines
actual_pod = self.api_client.sanitize_for_serialization(k.pod)
expected_dict = {
"apiVersion": "v1",
"kind": "Pod",
"metadata": {
"annotations": {},
"labels": {
"test_label": test_label,
"airflow_kpo_in_cluster": "False",
"dag_id": "dag",
"run_id": "manual__2016-01-01T0100000100-da4d1ce7b",
"kubernetes_pod_operator": "True",
"task_id": mock.ANY,
"try_number": "1",
},
"name": "memory-demo",
"namespace": "mem-example",
},
"spec": {
"affinity": {},
"containers": [
{
"args": ["--vm", "1", "--vm-bytes", "150M", "--vm-hang", "1"],
"command": ["stress"],
"env": [],
"envFrom": [],
"image": "ghcr.io/apache/airflow-stress:1.0.4-2021.07.04",
"name": "base",
"ports": [],
"resources": {"limits": {"memory": "200Mi"}, "requests": {"memory": "100Mi"}},
"terminationMessagePolicy": "File",
"volumeMounts": [{"mountPath": "/airflow/xcom", "name": "xcom"}],
},
{
"command": ["sh", "-c", 'trap "exit 0" INT; while true; do sleep 1; done;'],
"image": "alpine",