This commit documents the fact that the Servlet Filter based
observations for MVC applications is limited by the Servlet Filter
contract in the first place. All processing and logging that happens
outside of the scope of the filter is not observed.
Log statements from the catalina engine (in the case of Tomcat), or any
container-specific infrastructure, is not covered by the
instrumentation.
Closes gh-29398
This commit moves HttpHeaders that are used in multiple places (client
and server, reactive and non-reactive) to a new, separate http.support
package.
Closes gh-30823
This commit improves the documentation for the
`ShallowEtagHeaderFilter`, stating that it is only meant to support a
subset of conditional HTTP requests: GET requests with "If-None-Match"
headers. Other headers and state changing HTTP methods are not supported
here, as the filter only operates on the content of the response and has
no knowledge of the resource being served.
Closes gh-30517
Prior to this commit, there was no explicit support for arrays,
collections, and maps in nullSafeConciseToString(). This lead to string
representations such as the following, regardless of whether the array,
collection, or map was empty.
- char[]@1623b78d
- java.util.ImmutableCollections$List12@74fe5c40
- java.util.ImmutableCollections$MapN@10e31a9a
This commit introduces explicit support for arrays, collections, and
maps in nullSafeConciseToString(), which results in the following
empty/non-empty string representations.
- array: {} / {...}
- collection: [] / [...]
- map: {} / {...}
The reason a string representation of an array uses "{}" instead of
"[]" (like in Arrays.toString(...)) is that
ObjectUtils.nullSafeToString(<array>) already follows that convention,
and the implementation of nullSafeConciseToString() aligns with that
for the sake of consistency.
Closes gh-30810
This commit ensures that ServerResponse.HeadersBuilder::build can throw
an exception, by introducing a separate functional interface that does
allow for exceptions to be thrown.
Closes gh-30818
Juergen Hoeller
Sébastien Deleuze
Sam Brannen
Sam Brannen
Brian Clozel
Arjen Poutsma
Patrick Strawderman