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spring-projects-spring-fram…/spring-webflux
Brian Clozel b267547fb4 Contribute "uri" KeyValue for "/" client requests
Prior to this commit, client HTTP requests performed by `WebClient`
could miss the "uri" KeyValue for simple "/" requests.
This can happen when the baseUri is configured for the client with a
host and a root base path like "https://example.org/"; given the nature
of the `WebClient` API, in these cases, one can perform requests like
this:

```
WebClient client = WebClient.builder()
    .observationRegistry(registry)
    .baseUrl("https://example.org/")
    .build();

String response = client.get().retrieve().bodyToMono(String.class).block();
```

Such a call would contribute a `"none"` value for the `"uri"` KeyValue.

While only templates should be allowed for this keyvalue, we can assume
that requests to `"/"` should be recorded anyway and won't cause
cardinality explosion.

Fixes gh-29879
2023-01-30 10:09:41 +01:00
..