Show Holt-Winters forecast for Deployment Frequency

Summary

As part of our efforts to add predictive data trending we'll implement Holt-Winters smoothing model and it will be exposed via GraphQL API. We need to adjust FE code to query for the forecast and render forecast results.

Proposal

• Use buildForecast mutation.
• Forecast should be available for GitLab Ultimate projects only.
• Forecast should be accessible for Reporter+ role
• UI should handle situations when the forecast is not available (separate status in response).
• TODO: Iterate on UI.
• Update the documentation

Error handling

• Error 1: If the model creation fails then response will be general HTTP error code,
• Error 2: If model is poor then response will be successful with UNAVAILABLE status.

Design source

🖼 Figma project →