I am trying to run a airflow DAG and need to pass some parameters for the tasks.
How do I read the JSON string passed as the --conf parameter in the command line trigger_dag
command, in the python DAG file.
ex: airflow trigger_dag 'dag_name' -r 'run_id' --conf '{"key":"value"}'
Two ways. From inside a template field or file:
{{ dag_run.conf['key'] }}
Or when context is available, e.g. within a python callable of the PythonOperator
:
context['dag_run'].conf['key']