LocalVariableTableParameterNameDiscoverer is not registered by default anymore now.
Java sources should be compiled with `-parameters` instead (available since Java 8).
Also retaining standard Java parameter names for all of Spring's Kotlin sources now.
Closes gh-29531
As a follow-up to gh-29277, and since the JAXB support is now
triggered by the classpath presence of a JAXB implementation,
it makes sense to make SourceHttpMessageConverter, previously
configured unconditionally, optional.
That makes a big difference on native (1M of RSS reduction
with current typical Spring Boot 3 arrangement, 3.4M when
other usages of XML are not reachable).
It also brings more consistency between Spring MVC
and Spring WebFlux, and means that XML support for
Spring web applications now needs to be enabled explicitly.
As a consequence, Spring web applications using
javax.xml.transform.Source now needs to configure
SourceHttpMessageConverter explicitly in RestTemplate or
Spring MVC.
Closes gh-29535
Prior to this commit, the Observation Servlet filter would record
unhandled exceptions on the observation context but would leave the
default HTTP response status as is.
Servlet containers do set the response status in that case to 500 by
default. Not doing that at the Servlet filter level results in invalid
observations, stating that the HTTP response status is 200 (because the
error status hasn't been set yet by the container) and as a result, the
outcome is SUCCESS.
This commit ensures that the error status is set in those cases,
aligning the behavior with Servlet containers.
Fixes gh-29512
Prior to this commit, the server observability support would create a
cycle in Java packages.
This commit refactors the current arrangement to solve this by:
* "flattening" the reactive HTTP instrumentation; this removes the
dependency to the `ServerWebExchange` and `PathPattern` types
* moving the `observation` package under
`org.springframework.http.server` and
`org.springframework.http.server.reactive`
See gh-29477
This commit ensures that the matching path pattern for the request being
observed is used in the conytextual name, as advised in the OTel HTTP
server semantic conventions.
If the path pattern is not available, no additional value is provided
and the "http {method}" baseline is being used.
Fixes gh-29424
Prior to this commit, the ServerHttpObservationFilter would not add
the current observation as a key in the Reactor context, preventing
from being used or propagated during the HTTP exchange handling.
Also, the client instrumentation in `DefaultWebClient` would start
the observation once the request is fully formed and immutable,
preventing the context from being propagated through HTTP request
headers.
This commit fixes both uses cases now by:
* adding the current observation as a key in the reactor context
on the server side
* using the `ClientRequest.Builder` as a Carrier on the client side
Closes gh-29388
This commit makes sure that PartEvents with empty data buffer are
filtered out before written. Empty buffers caused issues with the
JdkClientHttpConnector.
Closes gh-29400
Conditional requests using "If-Unmodified-Since" headers are generally
used as precondition checks for state-changing methods (POST, PUT,
DELETE). See https://datatracker.ietf.org/doc/html/rfc7232#section-3.4
The spec also allows for idempotent methods like GET and HEAD.
Prior to this commit, the "If-Unmodified-Since" processing done in
`checkNotModified` (see `ServletWebRequest` and
`DefaultServerWebExchange`) would only focus on the state changing
methods and not take into account the safe methods. For those cases, the
"ETag" and "Last-Modified" would be missing from the response.
This commit ensures that such headers are added as expected in these
cases.
Fixes gh-29362
In some cases, the default response status of a `ServerWebExchange` can
be `null`, especially when the response is not available or the server
implementation does not set a default response status.
This commit ensures that the status code is available when deriving
`KeyValue` information from it, or uses a fallback value for the key
value.
Fixes gh-29359
Update `ServerHttpObservationFilter` to check if the `Observation`
is a no-op before adding the `ServerRequestObservationContext`.
Prior to this commit, if the `Observation` is a no-op then the
context type added with the `CURRENT_OBSERVATION_CONTEXT_ATTRIBUTE`
would not be a `ServerRequestObservationContext`. This would mean
that `findObservationContext` would throw a `ClassCastException`.
Fixes gh-29356
Prior to this commit, the `ServerHttpObservationFilter` would set the
response status (and possibly overwrite it) in case an exception is
found as an attribute.
While the exception itself should be used in the observation, the filter
should have no side effect on the response.
Fixes gh-29353
This commit makes sure that `@ExceptionHandler`-annotated methods can be
invoked via reflection in a native image. As most of the handling of
the parameter and the return type is shared with our generic
RequestMapping handling, the ReflectiveProcessor extends from it.
An `@ExceptionHandler`-annotated method can return a `ProblemDetail`. If
that's the case, reflection entries are contributed.
Closes gh-29297
This commit introduces support for CBOR and Protobuf using Kotlin
serialization. Support comes in the form of Encoder/Decoder as well
as HttpMessageConverters. Seperate abstract base classes supply support
for binary and string (de)serialization.
The exising JSON codecs and message converters have been migrated to
use the new base classes.
Closes gh-27628
