Rather than setting the status to 503 directly from the timeout
interceptor which no longer seems to work reliably with Servlet
containers like Jetty even performing an additional ERROR dispatch back
to the original URL, we know rather set the DeferredResult to an
AsyncTimeoutException, which results in a dispatch and standard
handling within Spring MVC. This should be a more reliable way of
dealing with timeouts.
Issue: SPR-14669
Since SPR-14522, the web reactive framework supports checkNotModified
features. This commit aligns the existing MVC infrastructure with
web reactive's behavior.
Because of the new Servlet 3.0 baseline, some constraints
aren't relevant anymore and duplicate code has been removed in
`HttpEntityMethodProcessor`.
Issue: SPR-14659
As per specification "The Subscription MUST allow the Subscriber to
call Subscription.request synchronously from within onNext or
onSubscribe". With the current implementation if Subscription.request
is called more than once when Subscriber.onSubscribe ISE will be
thrown - java.lang.IllegalStateException: DEMAND.
With this fix the implementation will not throw ISE and will allow
many invocations of Subscription.request when
Subscriber.onSubscribe.
This change puts the MockHttpServerRequest/Response under
org.springframework.mock.http.server.reactive.test which
mirrors the arrangement we have with the Servlet mock equivalents
and sets up the addition of MockHttpServerRequest/Response in
spring-test.
Issue: SPR-14421
This commit avoid merging automatically the SSE stream with
Flux.never(). Since browsers automatically reconnect when
the HTTP connection is closed, it is now the user responsability
to optionally perform a concatWith(Flux.never()) on streams that
complete in order to avoid receiving the data multiple times on
client side.
The behavior with hot streams that never complete does not change.
Issue: SPR-14578
- Renamed SseEvent to ServerSentEvent to make the name less redundant.
- ServerSentEvent is now immutable, having a builder to create new instances.
- Realigned the class properties to more closely match the events
described in the spec, so that `reconnectTime` becomes `retry`, and
`name` becomes `event`.
This commit updates the instructions on getting started with
Spring Web Reactive and also updates constructors and setters to
streamline the getting started procedure.
Issue: SPR-14640
This commit adds Smile and CBOR Jackson HttpMessageConverters
and make it possible to create Smile and CBOR ObjectMapper via
Jackson2ObjectMapperBuilder, which now allows to specify any
custom JsonFactory.
Like with JSON and XML Jackson support, the relevant
HttpMessageConverters are automaticially configurered by
Spring MVC WebMvcConfigurationSupport if jackson-dataformat-smile
or jackson-dataformat-cbor dependencies are found in the classpath.
Issue: SPR-14435
When using a `RestTemplate` instance within a Spring MVC application,
client exceptions may propagate in the MVC stack and can be wrongly
mapped by server `ExceptionHandlers`, leading to a wrong HTTP response
sent to the MVC client.
The `RestTemplate` instance uses `HttpMessageConverter` to decode
the remote service responses; and when those fail decoding an HTTP
response, they can throw an `HttpMessageNotReadableException`. That
exception then bubbles up through the `HttpMessageConverterExtractor`,
`RestTemplate` and the whole MVC stack, later mapped to HTTP 400
responses, since those exceptions can also be throws by the server stack
when the incoming requests can't be deserialized.
This commit wraps all `IOException` and `HttpMessageNotReadableException`
instances thrown by the extractor into `RestClientException`` instances.
It's now easier to consistently handle client exceptions and avoid such
edge cases.
Issue: SPR-13592
HttpEntityMethodProcessor should not throw IllegalArgumentExceptions for
invalid If-None-Match headers.
For those cases, this commit makes sure that both
`HttpEntityMethodProcessor` and `ServletWebRequest` have a consistent
behavior and stop processing the request as conditional and leave the
handler handle it.
Issue: SPR-14559
This commit sorts `ClientHttpRequestInterceptor`s when those are set in
`InterceptingHttpAccessor` (which `RestTemplate` extends from).
Interceptors can now be annotated with `@Order` or implements `Ordered`
to reflect their order of execution for each request.
Issue: SPR-13971
This commit adds support for HTTP header field parameters encoding, as
described in RFC5987.
Note that the default implementation still relies on US-ASCII encoding,
as the latest rfc7230 Section 3.2.4 says that:
> Newly defined header fields SHOULD limit their field values to
US-ASCII octets
Issue: SPR-14547
Prior to this commit, extracting an HTTP response with an empty body
and no Content-Type header using the WebClient would:
* trigger the use of the Jackson2JsonDecoder
* throw a NoSuchElementException because of the use of `Flux.single()`
This commit changes this behavior to `Flux.singleOrEmpty()` to avoid
throwing exceptions for empty Flux instances.
Issue: SPR-14582
reactor.test.TestSubscriber will not be part of Reactor Core
3.0.0 since it needs to be refactored to fit all the needs
expressed by the users. It is likely to be back later in one
of the Reactor Core 3.0.x releases.
This commit anticipate this removal by temporarily copying
TestSubscriber in spring-core test classes. As soon as
the new TestSubscriber will be available in Reactor Core,
Spring Framework reactive tests will use it again.
Sebastien Deleuze
Juergen Hoeller
Rossen Stoyanchev
Brian Clozel
Violeta Georgieva
Arjen Poutsma
Sam Brannen
Erik Olsson
Rob Winch
Stephane Nicoll