Application metrics and monitoring

[daniel-mader]

Description

UniCore should provide "out-of-the-box" integration with common monitoring environments (Prometheus) and expose technical and business metrics for helpful insights.

Motivation

Enhanced DX and quality

Resources

No response

To-do List

• expose Prometheus endpoints
• collect helpful business metrics (counters of issued credentials, etc.)

[daniel-mader]

Outdated implementation in #52

[berkes]

I, personally, would love some insight in the "events" as business-metrics for "happy paths" and "errors occurred" as non-happy=paths.

• Per event counter
• Per command counter
• Per business-domain event counter

So e.g. CredentialOfferCreated 30 or UnsignedCredentialCreated 21.
And e.g. InvalidProofError 50.

The errors, not as full fledged monitoring: IMO the logs should cover that, but as ways to display things that are expected, like authentication failures, incompatible wallets/specs, etc.

[daniel-mader]

We'll reopen this quite soon with an updated implementation including technical and business-related metrics 👍