tests/dags/test_parsing_context.py

#
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# to you under the Apache License, Version 2.0 (the
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from __future__ import annotations

from pathlib import Path
from typing import TYPE_CHECKING

from airflow.models.dag import DAG
from airflow.operators.empty import EmptyOperator
from airflow.utils.dag_parsing_context import (
    _AIRFLOW_PARSING_CONTEXT_DAG_ID,
    _AIRFLOW_PARSING_CONTEXT_TASK_ID,
)
from airflow.utils.timezone import datetime

if TYPE_CHECKING:
    from airflow.utils.context import Context


class DagWithParsingContext(EmptyOperator):
    def execute(self, context: Context):
        import os

        parsing_context_file = Path("/tmp/airflow_parsing_context")
        self.log.info("Executing")
        # signal to the test that we've started
        parsing_context = (
            f"{_AIRFLOW_PARSING_CONTEXT_DAG_ID}={os.environ.get(_AIRFLOW_PARSING_CONTEXT_DAG_ID)}\n"
            f"{_AIRFLOW_PARSING_CONTEXT_TASK_ID}={os.environ.get(_AIRFLOW_PARSING_CONTEXT_TASK_ID)}\n"
        )

        parsing_context_file.write_text(parsing_context)
        self.log.info("Executed")


dag1 = DAG(dag_id="test_parsing_context", start_date=datetime(2015, 1, 1))

dag1_task1 = DagWithParsingContext(task_id="task1", dag=dag1, owner="airflow")