Sleuth Aware Tracing

[zhenchuan9r]

Expected Behavior
Endpoints, especially token endpoint activities can be traced by Sleuth.

Current Behavior
Because endpoints are implemented by filters, sleuth cannot capture requests.

Context
To implement tracing on Spring Authorization Server, Sleuth seems not currently usable.
Some other solutions, like Skywalking may be used to enforce tracing feature.
However I hope Sleuth can be the official solution.
I am using Spring Boot 2.7.x series and SAS 0.3.1.
Thanks.

[jgrandja]

@zhenchuan9r Spring Authorization Server primary purpose is to provide a light-weight and customizable foundation for building OpenID Connect 1.0 Identity Providers and OAuth2 Authorization Server products. Product specific features would need to be implemented in the consuming application. Tracing and/or eventing is a type of product feature that would need to be implemented in the consuming application. Whether the application uses Spring Cloud Sleuth or another framework/library is up to the application.

Spring Authorization Server may consider adding specific extension point(s) that would help consuming applications implement a custom tracing feature.

[jgrandja]

@zhenchuan9r TRACE logging was added via gh-159