This commit adds support for Kotlin Coroutines suspending functions to
Spring MVC, by converting those to a Mono that can then be handled by
the asynchronous request processing feature.
It also optimizes Coroutines detection with the introduction of an
optimized KotlinDetector.isSuspendingFunction() method that does not
require kotlin-reflect.
Closes gh-23611
Prior to this commit, the resource handler serving static resources for
Spring MVC and Spring WebFlux would always look at the
`Resource#lastModified` information, derive the `"Last-Modified"` HTTP
response header and support HTTP conditional requests with that
information.
In some cases, builds or packaging tools choose to set this last
modification date to a static date in the past. This allows tools to
have reproducible builds or to leverage caching given the static
resources content didn't change.
This can lead to problems where this static date (e.g. "1980-01-01") is
used literally in HTTP responses and will make the HTTP caching
mechanism counter-productive: the content of the resources changed, but
the application insists on saying it didn't change since the 80s...
This commit adds a new configuration option to disable this support -
there is no way to automatically discard those dates: there is no
standard for that and many don't use he "EPOCH 0 date" as it can lead to
compatibility issues with different OSes.
Closes gh-25845
Prior to this commit, error handlers in the WebMvc.fn and WebFlux.fn
router function builders had to be registered in an unintuitive, reverse
order, due to the filter chain composition model used.
This commit reverses the error handler order, so that more specific
error handlers can come before generic ones.
Closes gh-25541
This commit adds two overloaded methods for each HTTP method in the
WebFlux.fn and WebMvc.fn route builders: one method taking just a
handler function, the other a request predicate and handler function.
After this commit, it is no longer required to provide a String path,
which is particularly useful when nesting routes, and the path would be
"".
Closes gh-25752
This commit introduces a new async(Object) method in the WebMvc.fn,
taking a asynchronous response as argument in the form of a
CompletableFuture or Publisher. This allows for asynchronous setting
of headers and status (and not just body, which was already possible).
Closes gh-25828
We don't expect a browser to save error responses to a file but we
extend this protection anyway since "inline" is only a suggestion
that shouldn't have any side effects.
This commit deprecates the `AppCacheManifestTransformer` implementations
since the appcache feature is being removed from the browsers.
Closes gh-25733
UrlPathHelper is often created and used without customizations or with
the same customizations. This commit introduces re-usable, instances.
Effectively a backport of commit 23233c.
See gh-25690
This commit makes several changes in both WebMvc.fn as well as
WebFlux.fn.
- ServerRequest now exposes a RequestPath through requestPath(), and
pathContainer() has been deprecated.
- The PathPredicate and PathResourceLookupFunction now respects this
RequestPath's pathInApplication() in their path-related
functionality.
- When nesting, the PathPredicate now appends the matched part of the
path to the current context path, instead of removing the matched
part (which was done previously). This has the same result: the
matched part is gone, but now the full path stays the same.
Closes gh-25270
