void invokeAtmosphereHandler(AtmosphereResourceImpl r) throws IOException {
if (!r.isInScope()) return;
AtmosphereRequest req = r.getRequest(false);
String disableOnEvent =
r.getAtmosphereConfig().getInitParameter(ApplicationConfig.DISABLE_ONSTATE_EVENT);
try {
if (disableOnEvent == null || !disableOnEvent.equals(String.valueOf(true))) {
AtmosphereHandler atmosphereHandler =
(AtmosphereHandler) req.getAttribute(FrameworkConfig.ATMOSPHERE_HANDLER);
synchronized (r) {
atmosphereHandler.onStateChange(r.getAtmosphereResourceEvent());
Meteor m = (Meteor) req.getAttribute(AtmosphereResourceImpl.METEOR);
if (m != null) {
m.destroy();
}
}
req.removeAttribute(FrameworkConfig.ATMOSPHERE_RESOURCE);
}
} catch (IOException ex) {
try {
r.onThrowable(ex);
} catch (Throwable t) {
logger.warn("failed calling onThrowable()", ex);
}
}
}
/**
* Note: Filter does not delegate to chain, since it would lead into cycle by calling {@link
* PushServlet#service(ServletRequest, ServletResponse)}.
*/
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
if (request instanceof HttpServletRequest && response instanceof HttpServletResponse) {
HttpServletRequest httpReq = (HttpServletRequest) request;
HttpServletResponse httpResp = (HttpServletResponse) response;
if ("GET".equals(httpReq.getMethod())) {
String pushSessionId = httpReq.getParameter(PUSH_SESSION_ID_PARAM);
Session session = null;
if (pushSessionId != null) {
ensureServletContextAvailable(request);
PushContext pushContext =
(PushContext) servletContext.getAttribute(PushContext.INSTANCE_KEY_NAME);
session = pushContext.getSessionManager().getPushSession(pushSessionId);
}
if (session == null) {
if (LOGGER.isDebugEnabled()) {
LOGGER.debug(MessageFormat.format("Session {0} was not found", pushSessionId));
}
httpResp.sendError(HttpServletResponse.SC_BAD_REQUEST);
return;
}
httpResp.setContentType("text/plain");
Meteor meteor =
Meteor.build(httpReq, SCOPE.REQUEST, Collections.<BroadcastFilter>emptyList(), null);
try {
Request pushRequest = new RequestImpl(meteor, session);
httpReq.setAttribute(SESSION_ATTRIBUTE_NAME, session);
httpReq.setAttribute(REQUEST_ATTRIBUTE_NAME, pushRequest);
pushRequest.suspend();
} catch (Exception e) {
LOGGER.error(e.getMessage(), e);
}
return;
}
}
}
@Override
public AtmosphereResource resume() {
if (!isSuspended()) {
logger.warn("AtmosphereResource {} not suspend, cannot resume it.", uuid());
return this;
}
try {
if (!isResumed.getAndSet(true) && isInScope.get()) {
logger.trace("AtmosphereResource {} is resuming", uuid());
action.type(Action.TYPE.RESUME);
// We need it as Jetty doesn't support timeout
Broadcaster b = getBroadcaster(false);
if (!b.isDestroyed() && b instanceof DefaultBroadcaster) {
((DefaultBroadcaster) b).broadcastOnResume(this);
}
notifyListeners();
try {
if (!b.isDestroyed()) {
broadcaster.removeAtmosphereResource(this);
}
} catch (IllegalStateException ex) {
logger.warn("Unable to resume", this);
logger.debug(ex.getMessage(), ex);
}
if (b.getScope() == Broadcaster.SCOPE.REQUEST) {
logger.debug("Broadcaster's scope is set to request, destroying it {}", b.getID());
b.destroy();
}
// Resuming here means we need to pull away from all other Broadcaster, if they exists.
if (config.getBroadcasterFactory() != null) {
config.getBroadcasterFactory().removeAllAtmosphereResource(this);
}
try {
req.setAttribute(ApplicationConfig.RESUMED_ON_TIMEOUT, Boolean.FALSE);
} catch (Exception ex) {
logger.debug("Resume exception: Cannot resume an already resumed/cancelled request", ex);
} finally {
try {
Meteor m = (Meteor) req.getAttribute(METEOR);
if (m != null) {
m.destroy();
}
} catch (Exception ex) {
logger.debug(
"Meteor resume exception: Cannot resume an already resumed/cancelled request", ex);
}
}
if (req.getAttribute(PRE_SUSPEND) == null) {
asyncSupport.action(this);
}
} else {
logger.trace("Already resumed {}", this);
return this;
}
} catch (Throwable t) {
logger.trace("Wasn't able to resume a connection {}", this, t);
}
listeners.clear();
return this;
}
/** {@inheritDoc} */
@Override
public synchronized AtmosphereResource resume() {
// We need to synchronize the method because the resume may occurs at the same time a message is
// published
// and we will miss that message. The DefaultBroadcaster synchronize on that method before
// writing a message.
try {
if (!isResumed && isInScope) {
action.type(Action.TYPE.RESUME);
isResumed = true;
// We need it as Jetty doesn't support timeout
Broadcaster b = getBroadcaster(false);
if (!b.isDestroyed() && b instanceof DefaultBroadcaster) {
((DefaultBroadcaster) b).broadcastOnResume(this);
}
notifyListeners();
try {
if (!b.isDestroyed()) {
broadcaster.removeAtmosphereResource(this);
}
} catch (IllegalStateException ex) {
logger.warn("Unable to resume", this);
logger.debug(ex.getMessage(), ex);
}
if (b.getScope() == Broadcaster.SCOPE.REQUEST) {
logger.debug("Broadcaster's scope is set to request, destroying it {}", b.getID());
b.destroy();
}
// Resuming here means we need to pull away from all other Broadcaster, if they exists.
if (config.getBroadcasterFactory() != null) {
config.getBroadcasterFactory().removeAllAtmosphereResource(this);
}
try {
req.setAttribute(ApplicationConfig.RESUMED_ON_TIMEOUT, Boolean.FALSE);
} catch (Exception ex) {
logger.debug("Resume exception: Cannot resume an already resumed/cancelled request", ex);
} finally {
try {
Meteor m = (Meteor) req.getAttribute(METEOR);
if (m != null) {
m.destroy();
}
} catch (Exception ex) {
logger.debug(
"Meteor resume exception: Cannot resume an already resumed/cancelled request", ex);
}
}
if (req.getAttribute(PRE_SUSPEND) == null) {
asyncSupport.action(this);
}
} else {
logger.debug("Cannot resume an already resumed/cancelled request {}", this);
}
} catch (Throwable t) {
logger.trace("Wasn't able to resume a connection {}", this, t);
}
notifyListeners(new AtmosphereResourceEventImpl(this, true, false));
listeners.clear();
return this;
}
public static Meteor getMeteor(HttpServletRequest request) {
return Meteor.build(request);
}