Source code for tests.system.providers.cncf.kubernetes.example_kubernetes_decorator
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from __future__ import annotations
from datetime import datetime
from airflow import DAG
from airflow.decorators import task
with DAG(
dag_id="example_kubernetes_decorator",
schedule=None,
start_date=datetime(2021, 1, 1),
tags=["example", "cncf", "kubernetes"],
catchup=False,
) as dag:
# [START howto_operator_kubernetes]
@task.kubernetes(
image="python:3.8-slim-buster",
name="k8s_test",
namespace="default",
in_cluster=False,
config_file="/path/to/.kube/config",
)
[docs] def execute_in_k8s_pod():
import time
print("Hello from k8s pod")
time.sleep(2)
@task.kubernetes(image="python:3.8-slim-buster", namespace="default", in_cluster=False)
def print_pattern():
n = 5
for i in range(n):
# inner loop to handle number of columns
# values changing acc. to outer loop
for _ in range(i + 1):
# printing stars
print("* ", end="")
# ending line after each row
print("\r")
execute_in_k8s_pod_instance = execute_in_k8s_pod()
print_pattern_instance = print_pattern()
execute_in_k8s_pod_instance >> print_pattern_instance
# [END howto_operator_kubernetes]
from tests.system.utils import get_test_run
# Needed to run the example DAG with pytest (see: tests/system/README.md#run_via_pytest)
[docs]test_run = get_test_run(dag)