New example along storyline: City reporting #52483

Description

As described in https://cwiki.apache.org/confluence/display/AIRFLOW/Examples+Refurbish

A new Dag is implemented along the described storyline for "City reporting"

This includes:

• New Dag is added in Taskflow as well as classic implementation
• Dag is according to checklist
• Previous examples that are content-wise replaced are deleted to incrementally clean-up
• Airflow documentation is adjusted to point to new examples are replaced
• General example storyline overview is adjusted and the functioning of the new example is described

Use case/motivation

Airflow Examples have been grown in number and focus over the past years. They purpose multiple things:

Serve as tutorials to learn Airflow DAG implementation
Serve with code snippets for documentation
Serve for testing the setup
(some) service for CI integration testing

Some example DAGs are in a good quality, some are not following best practices. Current examples do not follow a structure.

There are example DAGs contained in the Airflow core (currently pushed to standard provider/example_dags) as well as there are more examples in other providers. But examples from other providers are lot loaded automatically.

So in the Airflow 3 Dev Calls there was a demand named to clean-up and optimize example DAGs.

Related issues

#52476 is made before and might be adjusted

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct