Chao-Han Tsai created AIRFLOW-2517:
--------------------------------------
Summary: backfill support passing key values through CLI
Key: AIRFLOW-2517
URL: https://issues.apache.org/jira/browse/AIRFLOW-2517
Project: Apache Airflow
Issue Type: Improvement
Reporter: Chao-Han Tsai
Assignee: Chao-Han Tsai
In backfill, we can provide key-value pairs through CLI and those pairs can be
accessed through macros. This is just like the way `trigger_dag -c` works [1].
Let's walk through an example.
In the airflow CLI we specify a key-value pair.
{code}
airflow backfill hello_world -s 2018-02-01 -e 2018-02-08 -c ' {"text": "some
text"}
{code}
```
In the DAG file, I have a `BashOperator` that contains a template command and I
want
\{{ dag_run.conf.text }} resolves to the text I passed in CLI.
{code:python}
templated_command = """
echo "ds = {{ ds }}"
echo "prev_ds = {{ macros.datetime.strftime(prev_execution_date, "%Y-%m-%d")
}}"
echo "next_ds = {{ macros.datetime.strftime(next_execution_date, "%Y-%m-%d")
}}"
echo "text_through_conf = {{ dag_run.conf.text }}"
"""
bash_operator = BashOperator(
task_id='bash_task',
bash_command=templated_command,
dag=dag
)
{code}
[1] [https://airflow.apache.org/cli.html#trigger_dag]
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