Metadelta Demo Database

This is an example database showcasing the Metadelta tool.

In particular, we have:

• A sample Hasura database,
• A few commits making some changes,
• Some scripts showcasing how to run a local diff,
• A GitHub Actions integration showing how to integrate this into a "real" project.

GitHub Action Integration

If you take a look at the GitHub action workflow you will see a small collection of steps showing how to run the Metadelta on a PR.

The steps are as follows:

1. Clone the PR branch and the main branch to temp directories,
2. Run metadelta (from Docker) outputting a diff.json file,
3. If there was a difference:

• Upload it as an artifact to GitHub,
• Comment with a link to the Metadelta UI to view the artifact.

The only requirement for this to work is to configure a GitHub access token in the settings of the UI. The reason for this is GitHub requires a personal token for downloading artifacts.

You are, of course, free to upload your artifacts to another (publically-accessible) location, and then just use the src parameter on the UI to grab the diff that way.