James Meickle created AIRFLOW-3230:
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Summary: Add an Airflow CLI command for rendering graphs
Key: AIRFLOW-3230
URL: https://issues.apache.org/jira/browse/AIRFLOW-3230
Project: Apache Airflow
Issue Type: New Feature
Reporter: James Meickle
In pull requests that modify Airflow DAG code, it would be helpful to have CI
reports generate before/after comparisons of the graph view. Currently, the
Airflow CLI does not have the facility to do this. The best option is
"list_tasks --tree" which is really underwhelming. It's possible to write a
custom solution in graphviz using parsed DAG dependency data, but it will never
look/feel the same as Airflow's UI.
The graph code uses d3.js, which is included inside of a Python template. We
probably need to do something like:
# Parse the DAG code
# Write a representation to JSON
# Render the template to HTML
# Feed both files and an output location to something like this:
[https://github.com/d3-node/d3-node]
This makes sense to install as a part of Airflow core, since it would be
tightly coupled to the current Airflow version's graph code; but since it would
depend on JS execution not installable via Python, it would likely need to
raise a runtime error.
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