Hello,I finally found the problem ... It seems that I didn't understood very
well how to use WebSocketMessageBroadcaster from wicket-spring-boot. The
proper way to broadcast websocket messages from an ajax call is to use
org.apache.wicket.protocol.ws.api.WebSocketPushBroadcaster with an
additional configuration of the Executor that must broadcast the messages
using a separate threadFor example, if using springframework (with wicket
application as a bean) you must configure the executor:
java.util.concurrent.Executor executor =
Executors.newSingleThreadExecutor();
WebSocketSettings.Holder.get(webApplication).setWebSocketPushMessageExecutor(new
Executor() { @Override
public void run(Runnable command) {
executor.execute(command); } });
To broadcast messages from business code you can use spring events
(published from your business code) To broadcast from ajax handlers inject
this bean and call broadcastToAll(event) directly.
/** * * @author Elvis Ciocoiu * */@Componentpublic class
TaskEventWebSocketBroadcaster { private WebSocketPushBroadcaster
broadcaster; @Autowired private Application application;
@PostConstruct
public void init() { WebSocketSettings webSocketSettings =
WebSocketSettings.Holder.get(application);
IWebSocketConnectionRegistry
webSocketConnectionRegistry = webSocketSettings.getConnectionRegistry();
broadcaster = new WebSocketPushBroadcaster(webSocketConnectionRegistry);
}
@EventListener public void onTaskEvent(TaskEvent taskEvent) {
broadcastToAll(taskEvent); } public void
broadcastToAll(TaskEvent
taskEvent) { broadcaster.broadcastAll(application, new
TaskEventWebSocketPushMessage(taskEvent)); } /** *
* @author Elvis
Ciocoiu * */ public static class TaskEventWebSocketPushMessage
implements
IWebSocketPushMessage { private static final long serialVersionUID =
1L;
private TaskEvent taskEvent; public
TaskEventWebSocketPushMessage(TaskEvent taskEvent) {
this.taskEvent =
taskEvent; } public TaskEvent
getTaskEvent() { return taskEvent; }
}}
I think these distinct scenarios (broadcast from ajaxhandler and from
business thread) should be documented a little more in user guide. Sorry to
waste your time.Thank you
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