Custom Metrics backend and UI for creating and editing queries

Paweł Chojnackirequested to merge
pawel/prometheus-business-metrics-ee-2273 into master

What does this MR do?

Adds support for custom metrics

Screenshots (if relevant)

When there's no custom metrics Screen_Shot_2018-02-08_at_5.36.56_PM

Form for adding metrics

Adding Screen_Shot_2018-03-05_at_1.10.29_PM

Editing Screen_Shot_2018-03-05_at_1.10.41_PM

When there's custom metrics Screen_Shot_2018-03-06_at_11.37.19_AM

When there's custom metrics and no deployments Screen_Shot_2018-03-06_at_11.35.55_AM

No default metrics/custom metrics

With no deployment Screen_Shot_2018-02-08_at_5.37.05_PM

When deployed and no common metrics were found Screen_Shot_2018-02-28_at_12.35.13_PM

The dashboard itself Screen_Shot_2018-03-05_at_1.11.29_PM

Does this MR meet the acceptance criteria?

  • Changelog entry added, if necessary
  • Implement Query Validation using Prometheus
  • Use added queries to query prometheus and return responses in additional queries endpoint
  • Documentation created/updated
  • Tests added for this feature/bug
  • Review
    • Has been reviewed by UX
    • Has been reviewed by Frontend
    • Has been reviewed by Backend
    • Has been reviewed by Database
  • Conform by the merge request performance guides
  • Conform by the style guides
  • Squashed related commits together
  • Internationalization required/considered
  • If paid feature, have we considered GitLab.com plan and how it works for groups and is there a design for promoting it to users who aren't on the correct plan

What are the relevant issue numbers?

Related to: #2273 (closed)

CE backport of common metric changes:

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/17586

Edited by Filipa Lacerda

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