How to access execution_date in SimpleHttpOperator in Airflow - rest

Question

I am trying automate a call I make using a REST API with the SimpleHttpOperator.
Here is an example of the call I can make and is working great.
curl -u username:password
-H "Content-Type: application/json"
-X POST
-d '{"job_id":10,"date":{"year":"2016","month":"10"}}'
https://MY_INSTANCE_NAME.cloud.databricks.com/api/2.0/jobs/run-now
Now, formatting this to be generated by the SimpleHttpOperator looks like this and also works great:
t2 = SimpleHttpOperator(
task_id=TASK_ID,
http_conn_id=CONN_ID,
method='POST',
endpoint='api/2.0/jobs/run-now',
headers={"Content-Type": "application/json"},
data=json.dumps({"job_id":10, "date": { "year": "2016" , "month": "10" }}),
dag=dag
)
I now am trying to access execution_date, a variable set by Airflow which lets an Operator know the time it was suppose to be called. This normally is accessible using a jinga template for BashOperator or PythonOperator but not SimpleHttpOperator:
e.g. """echo {{execution_date}}"""
This variable is not available to the SimpleHttpOperator and it is very much needed. If you know any work arounds or a way to access it within the SimpleHttpOperator, please let me know.
Thanks.

Answer 1

The date field in SimpleHttpOperator accepts jinja template:
t2 = SimpleHttpOperator(
task_id=TASK_ID,
http_conn_id=CONN_ID,
method='POST',
endpoint='api/2.0/jobs/run-now',
headers={"Content-Type": "application/json"},
data="""{"job_id":"10", "date": { "year": {{code}}, "month": {{code}}{{'}}'}}""",
dag=dag
)