Story

As a user of RHDH, I want to use the OpenTelemetry metrics from upstream so that I can monitor my application with supported events

Background

RHDH is relying on a deprecated prom-client. We need to update this as part of the adoption of Backstage 1.30

Dependencies and Blockers

QE impacted work

Documentation impacted work

Acceptance Criteria

• Remove usage of the prom-client from out code.
  • initial search shows it's in the following places:
    https://github.com/janus-idp/backstage-showcase/blob/592dc8a2ca88907dd7164a295d7bbf6fd9ea0487/packages/backend/src/modules/metrics.ts#L41
  • https://github.com/janus-idp/backstage-showcase/blob/592dc8a2ca88907dd7164a295d7bbf6fd9ea0487/packages/backend/package.json#L52
• Reference: tutorial
• Determine if we need to add the new scripts in the backend:
  • invoke instrumentation
  • run a locally installed prometheus
• The metrics are exposed on a new port 9464 -> Breaking change which would need documentation

upstream documentation updates (design docs, release notes etc)

Technical enablement / Demo