/**
* Initialize an {@link AtmosphereResource}.
*
* @param config The {@link org.atmosphere.cpr.AtmosphereConfig}
* @param broadcaster The {@link org.atmosphere.cpr.Broadcaster}.
* @param req The {@link AtmosphereRequest}
* @param response The {@link AtmosphereResource}
* @param asyncSupport The {@link AsyncSupport}
* @param atmosphereHandler The {@link AtmosphereHandler}
* @return this
*/
@Override
public AtmosphereResource initialize(
AtmosphereConfig config,
Broadcaster broadcaster,
AtmosphereRequest req,
AtmosphereResponse response,
AsyncSupport asyncSupport,
AtmosphereHandler atmosphereHandler) {
this.req = req;
this.response = response;
this.broadcaster = broadcaster;
this.config = config;
this.asyncSupport = asyncSupport;
this.atmosphereHandler = atmosphereHandler;
this.event = new AtmosphereResourceEventImpl(this);
String s = (String) req.getAttribute(SUSPENDED_ATMOSPHERE_RESOURCE_UUID);
if (s == null) {
s = response.getHeader(HeaderConfig.X_ATMOSPHERE_TRACKING_ID);
}
uuid = s == null ? UUID.randomUUID().toString() : s;
if (config.isSupportSession()) {
// Keep a reference to an HttpSession in case the associated request get recycled by the
// underlying container.
try {
session = req.getSession(true);
} catch (NullPointerException ex) {
// http://java.net/jira/browse/GLASSFISH-18856
logger.trace("http://java.net/jira/browse/GLASSFISH-18856", ex);
}
}
transport = configureTransport();
return this;
}
@Override
public HttpSession session(boolean create) {
if (config.isSupportSession() && session == null) {
// http://java.net/jira/browse/GLASSFISH-18856
session = req.getSession(create);
}
return session;
}
@Override
public AtmosphereResource suspend(long timeout) {
if (event.isSuspended() || disableSuspend) return this;
if (config.isSupportSession()
&& req.getSession(false) != null
&& req.getSession().getMaxInactiveInterval() != -1
&& req.getSession().getMaxInactiveInterval() * 1000 < timeout) {
throw new IllegalStateException(
"Cannot suspend a "
+ "response longer than the session timeout. Increase the value of session-timeout in web.xml");
}
if (transport().equals(TRANSPORT.JSONP) || transport().equals(TRANSPORT.LONG_POLLING)) {
resumeOnBroadcast.set(true);
}
onPreSuspend(event);
// Recheck based on preSuspend
if (event.isSuspended() || disableSuspend) return this;
if (!event.isResumedOnTimeout()) {
Enumeration<String> connection = req.getHeaders("Connection");
if (connection == null) {
connection = req.getHeaders("connection");
}
if (connection != null && connection.hasMoreElements()) {
String[] e = connection.nextElement().toString().split(",");
for (String upgrade : e) {
if (upgrade.trim().equalsIgnoreCase(WEBSOCKET_UPGRADE)) {
if (!asyncSupport.supportWebSocket()) {
response.addHeader(X_ATMOSPHERE_ERROR, "Websocket protocol not supported");
} else {
req.setAttribute(FrameworkConfig.TRANSPORT_IN_USE, HeaderConfig.WEBSOCKET_TRANSPORT);
}
}
}
}
if (req.getHeader(X_ATMOSPHERE_TRANSPORT) == null) {
req.setAttribute(FrameworkConfig.TRANSPORT_IN_USE, HeaderConfig.LONG_POLLING_TRANSPORT);
}
req.setAttribute(PRE_SUSPEND, "true");
action.type(Action.TYPE.SUSPEND);
action.timeout(timeout);
// TODO: We can possibly optimize that call by avoiding creating a Broadcaster if we are sure
// the Broadcaster
// is unique.
boolean isJersey = req.getAttribute(FrameworkConfig.CONTAINER_RESPONSE) != null;
boolean skipCreation = false;
if (req.getAttribute(SKIP_BROADCASTER_CREATION) != null) {
skipCreation = true;
}
// Null means SCOPE=REQUEST set by a Meteor
if (!skipCreation
&& (broadcaster == null || broadcaster.getScope() == Broadcaster.SCOPE.REQUEST)
&& !isJersey) {
String id = broadcaster != null ? broadcaster.getID() : getClass().getName();
Class<? extends Broadcaster> clazz =
broadcaster != null ? broadcaster.getClass() : DefaultBroadcaster.class;
broadcaster = config.getBroadcasterFactory().lookup(clazz, id, false);
if (broadcaster == null || broadcaster.getAtmosphereResources().size() > 0) {
broadcaster =
config.getBroadcasterFactory().lookup(clazz, id + "/" + UUID.randomUUID(), true);
}
}
broadcaster.addAtmosphereResource(this);
if (req.getAttribute(DefaultBroadcaster.CACHED) != null
&& transport() != null
&& (transport().equals(TRANSPORT.LONG_POLLING) || transport().equals(TRANSPORT.JSONP))) {
action.type(Action.TYPE.CONTINUE);
// Do nothing because we have found cached message which was written already, and the
// handler resumed.
logger.debug("Cached message found, not suspending {}", uuid());
return this;
}
req.removeAttribute(PRE_SUSPEND);
notifyListeners();
}
return this;
}
/**
* Is {@link HttpSession} supported
*
* @return true if supported
*/
protected boolean supportSession() {
return config.isSupportSession();
}