Add flow_metadata_json to workflows

Roman Eisnerrequested to merge
re/add-flow-metadata into master

What does this MR do and why?

Add flow_metadata_json to workflows. Adds a new field that can contain flow information for the flow that was actually run. This is required because flow_version resolution happens on the AI Gateway.

Also added a model-level validation to the existing model_metadata_json field, which matches the DB constraints.

References

#604884 (closed)

How to set up and validate locally

Update Database

bundle exec rails db:migrate:up:main VERSION=20260713115338

Testing flow data being saved:

  1. Check out this branch on your AIGW: gitlab-org/modelops/applied-ml/code-suggestions/ai-assist!6210 (merged)
  2. gdk restart duo-workflow-service
  3. Run database migration above
  4. Run a developer flow
  5. Confirm the resolved version was set:
pry(main)> Ai::DuoWorkflows::Workflow.last.flow_metadata_json
...
=> "{\"flow_version\": \"2.0.0\", \"schema_version\": \"v1\", \"flow_id\": \"developer\"}"

Cleanup

  1. Undo database migration
bundle exec rails db:migrate:down:main VERSION=20260713115338

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Edited by Roman Eisner

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