Source code for tests.system.providers.papermill.example_papermill_verify

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"""
This DAG will use Papermill to run the notebook "hello_world", based on the execution date
it will create an output notebook "out-<date>". All fields, including the keys in the parameters, are
templated.
"""

from __future__ import annotations

import os
from datetime import datetime, timedelta

import scrapbook as sb

from airflow import DAG
from airflow.decorators import task
from airflow.lineage import AUTO
from airflow.providers.papermill.operators.papermill import PapermillOperator


[docs]START_DATE = datetime(2021, 1, 1)


[docs]SCHEDULE_INTERVAL = "0 0 * * *"


[docs]DAGRUN_TIMEOUT = timedelta(minutes=60)


[docs]ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID")


[docs]DAG_ID = "example_papermill_operator_verify"



# [START howto_verify_operator_papermill]
@task

[docs]def check_notebook(inlets, execution_date):
    """
    Verify the message in the notebook
    """
    notebook = sb.read_notebook(inlets[0].url)
    message = notebook.scraps["message"]
    print(f"Message in notebook {message} for {execution_date}")

    if message.data != f"Ran from Airflow at {execution_date}!":
        return False

    return True



with DAG(
    dag_id="example_papermill_operator_verify",
    schedule=SCHEDULE_INTERVAL,
    start_date=START_DATE,
    dagrun_timeout=DAGRUN_TIMEOUT,
    catchup=False,
) as dag:

[docs]    run_this = PapermillOperator(
        task_id="run_example_notebook",
        input_nb=os.path.join(os.path.dirname(os.path.realpath(__file__)), "input_notebook.ipynb"),
        output_nb="/tmp/out-{{ execution_date }}.ipynb",
        parameters={"msgs": "Ran from Airflow at {{ execution_date }}!"},
    )


    run_this >> check_notebook(inlets=AUTO, execution_date="{{ execution_date }}")
# [END howto_verify_operator_papermill]

from tests.system.utils import get_test_run  # noqa: E402

# Needed to run the example DAG with pytest (see: tests/system/README.md#run_via_pytest)

[docs]test_run = get_test_run(dag)

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