Version 1.3.5

version 1.3.5

• released: 2026-06-03
• description: KPIs in data checks, execution output files and new role
• changelog:

  • KPIs in data checks
    Executions and cases can now generate/re-generate and validate KPIs as part of the data-check flow. Solvers
    can define a KPI schema for their solutions, and the result is validated against it. The rostering
    example includes an implementation. New KPI-aware data-check endpoints are added alongside the
    existing data-check endpoints, which remain available.

  • Execution output files
    Adds the ability to generate output files for executions. These files are produced as part of the
    workflow run in Airflow, which follows the sequence:

    instance checks → solve → solution checks → KPIs → output files

    Each step gates the next:

    • Instance checks run first. If they report critical errors, the solver is not run and no
      output files are generated.
    • The solver runs. If no solution is found, output files are still produced based on the
      available data (instance checks).
    • Solution checks run on the solution. KPIs are only generated when the solution checks
      report no errors; if the solution has errors, KPIs are skipped.
    • Output files are then generated from the instance checks, solution, solution checks, and
      KPIs. Whether files are produced depends on the solver's generate_output_files
      implementation — if it returns nothing, files are reported as not generated.

    Each execution tracks the status of its files (not generated, ready/OK, out of date, deleted, or
    error), each with an associated message. If file generation fails at any point, the status is set
    to error. New endpoints let clients fetch these files and trigger regeneration, and a scheduled
    cleanup job removes stale execution files from the backend. Database migrations are included for
    the new fields.

  • Roles
    Adds a new "dummy" role with a limited set of permissions (read/update user detail, read user
    roles).

  • Other changes
    Expanded test coverage for the new features.

What's Changed

• Release/v1.3.5 by @AlejandraGalan in #727

Full Changelog: v1.3.4...cornflow1.3.5