Code accompanying Chapter 4 of the book Data Pipelines with Apache Airflow.

This folder contains DAGs from Chapter 4. The filenames and DAG ids follow the listing ids in the book. Near the end of the chapter, we demonstrate usage of the PostgresOperator. The Docker Compose example in this folder creates a second Postgres database so you don't have to setup things yourself when running the example. If you like, you can access it:

• Host: localhost
• Port: 5433
• Username: airflow
• Password: airflow
• Database: airflow

This database is initialized with the pageview_counts table as shown in the book.

To get started with the code examples, start Airflow with Docker Compose with the following command:

docker-compose up -d

The webserver initializes a few things, so wait for a few seconds, and you should be able to access the Airflow webserver at http://localhost:8080.

To stop running the examples, run the following command:

docker-compose down -v