[Feature] Add low-complexity testing DAG

[zackkrida]

Problem

When testing airflow configuration many of the DAGs take a long time to run or have many 3rd party network calls. It would be nice to have a simple DAG that logs some values or something, for easy testing of Airflow configuration in production.

Something with multiple steps, maybe some fake latency to make the steps a few seconds long each, and just logs a bunch of output.

Description

Alternatives

Additional context

Implementation

• 🙋 I would be interested in implementing this feature.

[sarayourfriend]

@zackkrida does the DAG need to actually return data for Airflow to process or just log stuff?

[zackkrida]

i think just logging stuff is okay.

[obulat]

I don't know if it's useful at all here, but when a task returns a value, it can be used by the next task using xcom_pull. That's a way of sharing data between tasks. Also, anything printed out on the last line by a BashOperator becomes its return value.