After SPR-12884 (4.2 RC1) introduced support for a selector header
expression on SUBSCRIBE frames, messages from the destination cache
are further filtered based on the selector expression. While adding a
test to find subscriptions at the same time as unsubscribing, a
potential NPE was exposed. This commit fixes the NPE.
Issue: SPR-13204
This split avoids a package tangle (between core and core.annotation) and also allows for selective use of raw annotation exposure versus synthesized annotations, with the latter primarily applicable to web and message handler processing at this point.
Issue: SPR-13153
This commit introduces support for asynchronous return values thanks
to the new AsyncHandlerMethodReturnValueHandler interface. Out of
the box support for ListenableFuture is also provided.
Issue: SPR-12168
This change introduces SimpUserRegistry exposing an API to access
information about connected users, their sessions, and subscriptions
with STOMP/WebSocket messaging. Provides are methods to access users
as well as a method to find subscriptions given a Matcher strategy.
The DefaultSimpUserRegistry implementation is also a
SmartApplicationListener which listesn for ApplicationContext events
when users connect, disconnect, subscribe, and unsubscribe to
destinations.
The MultiServerUserRegistry implementation is a composite that
aggregates user information from the local SimpUserRegistry as well
as snapshots of user on remote application servers.
UserRegistryMessageHandler is used with MultiServerUserRegistry. It
broadcats user registry information through the broker and listens
for similar broadcasts from other servers. This must be enabled
explicitly when configuring the STOMP broker relay.
The existing UserSessionRegistry which was primiarly used internally
to resolve a user name to session id's has been deprecated and is no
longer used. If an application configures a custom UserSessionRegistr
still, it will be adapted accordingly to SimpUserRegistry but the
effect is rather limited (comparable to pre-existing functionality)
and will not work in multi-server scenarios.
Issue: SPR-12029
This commit introduces a messaging.converter.MessageConverter that
marshals to/from XML using the abstractions provided in the OXM module.
Issue: SPR-12726
This change adds support for broadcasting messages with unresolved
user destinations so that other servers can try to resolve it.
That enables sending messages to users who may be connected to a
different server.
Issue: SPR-11620
WebSocketStompClient can be used with any implementation of
org.springframework.web.socket.client.WebSocketClient, which includes
org.springframework.web.socket.sockjs.client.SockJsClient.
Reactor11TcpStompClient can be used with reactor-net and provides STOMP
over TCP. It's also possible to adapt other WebSocket and TCP client
libraries (see StompClientSupport for more details).
For example usage see WebSocketStompClientIntegrationTests.
Issue: SPR-11588
Add support for annotation-based event listeners. Enabled automatically
when using Java configuration or can be enabled explicitly via the
regular <context:annotation-driven/> XML element. Detect methods of
managed beans annotated with @EventListener, either directly or through
a meta-annotation.
Annotated methods must define the event type they listen to as a single
parameter argument. Events are automatically filtered out according to
the method signature. When additional runtime filtering is required, one
can specify the `condition` attribute of the annotation that defines a
SpEL expression that should match to actually invoke the method for a
particular event. The root context exposes the actual `event`
(`#root.event`) and method arguments (`#root.args`). Individual method
arguments are also exposed via either the `a` or `p` alias (`#a0` refers
to the first method argument). Finally, methods arguments are exposed via
their names if that information can be discovered.
Events can be either an ApplicationEvent or any arbitrary payload. Such
payload is wrapped automatically in a PayloadApplicationEvent and managed
explicitly internally. As a result, users can now publish and listen
for arbitrary objects.
If an annotated method has a return value, an non null result is actually
published as a new event, something like:
@EventListener
public FooEvent handle(BarEvent event) { ... }
Events can be handled in an aynchronous manner by adding `@Async` to the
event method declaration and enabling such infrastructure. Events can
also be ordered by adding an `@Order` annotation to the event method.
Issue: SPR-11622
Prior to this change when adding subscriptions
DefaultSubscriptionRegistry (incorrectly) made a copy of the given map
for its "access" cache rather than for its "update" cache.
Issue: SPR-12665
The test was verifying that when a DISCONNECT frame is sent to the
broker, there will be no further messages on the clientOutboundChannel.
This is generally true, however in some cases when the broker receives
a DISCONNECT it may close its connection fast enough (before we do) in
which case we send an ERROR message downstream to ensure the WebSocket
side is cleaned up. Either way the downstream should be idempotent
with regards to cleaning up sessions.
With this commit, Jackson builder is now used in spring-websocket
to create the ObjectMapper instance.
It is not possible to use the builder for spring-messaging
and spring-jms since these modules don't have a dependency on
spring-web, thus they now just customize the same features:
- MapperFeature#DEFAULT_VIEW_INCLUSION is disabled
- DeserializationFeature#FAIL_ON_UNKNOWN_PROPERTIES is disabled
Issue: SPR-12293
This commit fixes the parsing of message destinations such as
"/user/anna/queue/foo", reverting a regression introduced by SPR-11506,
which worked well with @SendToUser use cases but caused issues for
messages sent to other users.
Issue: SPR-12444
Before this change the simple broker simply removed subscriptions
upon receiving a DISCONNECT message assuming it was a result of
a client STOMP WebSocket session ending.
However, if the server-side application sends a DISCONNECT to
the broker in order to terminate a session, the STOMP WebSocket
session could remain unware without any further action. This
change ensures the simple broker sends a DISCONNECT_ACK message
downstream whenever it receives a DISCONNECT.
Issue: SPR-12288
This change adds a ChannelInterceptor that flips the immutable flag on
messages being sent. This allows components sending messages to leave
the message mutable for interceptors to further apply modifications
before the message is sent (and exposed to concurrency).
The interceptor is automatically added with the STOMP/WebSocket Java
and XML config and the StompSubProtocolHandler leaves parsed incoming
messages mutable so they can be further modified before being sent.
Issue: SPR-12321
