Java SseEmitter.onTimeout方法代码示例

import org.springframework.web.servlet.mvc.method.annotation.SseEmitter; //导入方法依赖的package包/类
/**
 * Creates a {@link SseEmitter} and registers the client in the internal database.
 * Client will be subscribed to the provided events if specified.
 *
 * @param clientId unique client identifier
 * @param timeout timeout value in milliseconds
 * @param unsubscribe if true unsubscribes from all events that are not provided with
 * the next parameter
 * @param events events the client wants to subscribe
 * @return a new SseEmitter instance
 */
public SseEmitter createSseEmitter(String clientId, Long timeout, boolean unsubscribe,
		boolean completeAfterMessage, String... events) {
	SseEmitter emitter = new SseEmitter(timeout);
	emitter.onTimeout(emitter::complete);
	registerClient(clientId, emitter, completeAfterMessage);

	if (events != null && events.length > 0) {
		if (unsubscribe) {
			unsubscribeFromAllEvents(clientId, events);
		}
		for (String event : events) {
			subscribe(clientId, event);
		}
	}

	return emitter;
}
 

import org.springframework.web.servlet.mvc.method.annotation.SseEmitter; //导入方法依赖的package包/类
@GetMapping("/api/notification/feed")
public ResponseEntity<SseEmitter> getResults() {

	if(sseEngine==null){
		LOGGER.warn(()->"No SSE Engine available");
		return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
	}

	final Long fLoggedInUserId = getLoggedInUserId();
	SseEmitter emitter = sseEngine.getEmitters().get(fLoggedInUserId);
	if (emitter == null) {
		LOGGER.debug(() -> "Creating new emitter");
		SseEmitter fEmitter = emitter = new SseEmitter();

		emitter.onCompletion(() -> {
			LOGGER.debug(() -> "Emitter completed");
			sseEngine.getEmitters().remove(fLoggedInUserId);
		});
		emitter.onTimeout(() -> {
			fEmitter.complete();
		});

		sseEngine.getEmitters().put(fLoggedInUserId, emitter);
	}
	return new ResponseEntity<>(emitter, HttpStatus.OK);
}
 

import org.springframework.web.servlet.mvc.method.annotation.SseEmitter; //导入方法依赖的package包/类
private SseEmitter emit(Route route, Message<Collection<Object>> message)
		throws IOException {
	SseEmitter emitter = new SseEmitter(Long.MAX_VALUE);
	String path = route.getPath();
	if (!emitters.containsKey(path)) {
		emitters.putIfAbsent(path, new HashSet<>());
	}
	emitters.get(path).add(emitter);
	emitter.onCompletion(() -> emitters.get(path).remove(emitter));
	emitter.onTimeout(() -> emitters.get(path).remove(emitter));
	for (Object body : message.getPayload()) {
		emitter.send(body);
	}
	return emitter;
}
 

import org.springframework.web.servlet.mvc.method.annotation.SseEmitter; //导入方法依赖的package包/类
@GetMapping(value = "/emitter/{dashboardId}")
public SseEmitter serverSideEmitter(@PathVariable String dashboardId) throws IOException {

    LOGGER.info("Creating SseEmitter for dashboard {}", dashboardId);

    SseEmitter sseEmitter = new NotCachedSseEmitter();

    sseEmitter.onCompletion(() -> {
        handler.removeFromSessionsMap(sseEmitter, dashboardId);
        sseEmitter.complete();
    });

    sseEmitter.onTimeout(() -> {
        handler.removeFromSessionsMap(sseEmitter, dashboardId);
        sseEmitter.complete();
    });

    handler.addToSessionsMap(sseEmitter, dashboardId);

    sseEmitter.send(SseEmitter.event().reconnectTime(0L));

    return sseEmitter;

}
 

import org.springframework.web.servlet.mvc.method.annotation.SseEmitter; //导入方法依赖的package包/类
/**
 * Unsubscribes the subscription when the emitter completes or times out
 * @param emitter
 * @param subscription
 */
public static void bindUnsubscribe(SseEmitter emitter, Subscription subscription) {
    emitter.onCompletion(subscription::unsubscribe);
    emitter.onTimeout(subscription::unsubscribe);
}