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Reactor2TcpClient constructor with address supplier

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Issue: SPR-12452
This commit is contained in:
Rossen Stoyanchev
2018-03-20 11:41:54 -04:00
parent 4bc3e0c2b4
commit d512cca3fd
4 changed files with 106 additions and 16 deletions
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46
src/asciidoc/web-websocket.adoc
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@@ -1615,8 +1615,8 @@ values ``guest``/``guest``.
====
The STOMP broker relay always sets the `login` and `passcode` headers on every `CONNECT`
frame that it forwards to the broker on behalf of clients. Therefore WebSocket clients
need not set those headers; they will be ignored. As the following section explains,
instead WebSocket clients should rely on HTTP authentication to protect the WebSocket
need not set those headers; they will be ignored. As the <<websocket-stomp-authentication>>
explains, instead WebSocket clients should rely on HTTP authentication to protect the WebSocket
endpoint and establish the client identity.
====
@@ -1626,13 +1626,47 @@ and receiving heartbeats (10 seconds each by default). If connectivity to the br
is lost, the broker relay will continue to try to reconnect, every 5 seconds,
until it succeeds.
[NOTE]
====
A Spring bean can implement `ApplicationListener<BrokerAvailabilityEvent>` in order
Any Spring bean can implement `ApplicationListener<BrokerAvailabilityEvent>` in order
to receive notifications when the "system" connection to the broker is lost and
re-established. For example a Stock Quote service broadcasting stock quotes can
stop trying to send messages when there is no active "system" connection.
====
By default, the STOMP broker relay always connects, and reconnects as needed if
connectivity is lost, to the same host and port. If you wish to supply multiple addresses,
on each attempt to connect, you can configure a supplier of addresses, instead of a
fixed host and port. For example:
[source,java,indent=0]
[subs="verbatim,quotes"]
----
@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer {
// ...
@Override
public void configureMessageBroker(MessageBrokerRegistry registry) {
registry.enableStompBrokerRelay("/queue/", "/topic/").setTcpClient(createTcpClient());
registry.setApplicationDestinationPrefixes("/app");
}
private Reactor2TcpClient<byte[]> createTcpClient() {
Supplier<InetSocketAddress> addressSupplier = new Supplier<InetSocketAddress>() {
@Override
public InetSocketAddress get() {
// Select address to connect to ...
}
};
StompDecoder decoder = new StompDecoder();
Reactor2StompCodec codec = new Reactor2StompCodec(new StompEncoder(), decoder);
return new Reactor2TcpClient<>(addressSupplier, codec);
}
}
----
The STOMP broker relay can also be configured with a `virtualHost` property.
The value of this property will be set as the `host` header of every `CONNECT` frame