/**
* Invoked when the client disconnect or when an unexpected closing of the underlying connection
* happens.
*
* @param event
*/
@Disconnect
public void onDisconnect(AtmosphereResourceEvent event) {
if (event.isCancelled()) {
logger.info("Browser {} unexpectedly disconnected", event.getResource().uuid());
} else if (event.isClosedByClient()) {
logger.info("Browser {} closed the connection", event.getResource().uuid());
}
}
@Override
public void onDisconnect(final AtmosphereResourceEvent event) {
try {
if (event.isCancelled() || event.isClosedByClient()) {
System.out.println("onDisconnect:: cancelled/closed");
}
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void onStateChange(AtmosphereResourceEvent event) throws IOException {
AtmosphereResource resource = event.getResource();
String id = resource.uuid();
if (event.isCancelled()) {
callWithUi(resource, disconnectCallback);
} else if (event.isResuming()) {
// A connection that was suspended earlier was resumed (committed to
// the client.) Should only happen if the transport is JSONP or
// long-polling.
getLogger().log(Level.FINER, "Resuming request for resource {0}", id);
} else {
// A message was broadcast to this resource and should be sent to
// the client. We don't do any actual broadcasting, in the sense of
// sending to multiple recipients; any UIDL message is specific to a
// single client.
getLogger().log(Level.FINER, "Writing message to resource {0}", id);
Writer writer = resource.getResponse().getWriter();
writer.write(event.getMessage().toString());
switch (resource.transport()) {
case WEBSOCKET:
break;
case SSE:
case STREAMING:
writer.flush();
break;
case JSONP:
case LONG_POLLING:
resource.resume();
break;
default:
getLogger().log(Level.SEVERE, "Unknown transport {0}", resource.transport());
}
}
}
/**
* Write the {@link AtmosphereResourceEvent#getMessage()} back to the client using the {@link
* org.atmosphere.cpr.AtmosphereResponse#getOutputStream()} or {@link
* org.atmosphere.cpr.AtmosphereResponse#getWriter()}. If a {@link org.atmosphere.cpr.Serializer}
* is defined, it will be invoked and the writ operation will be delegated to to it.
*
* <p>By default, this method will try to use {@link
* org.atmosphere.cpr.AtmosphereResponse#getWriter()}.
*
* @param event the {@link AtmosphereResourceEvent#getMessage()}
* @throws java.io.IOException
*/
public void onStateChange(AtmosphereResourceEvent event) throws IOException {
Object message = event.getMessage();
AtmosphereResponse r = event.getResource().getResponse();
if (message == null || event.isCancelled() || event.getResource().getRequest().destroyed())
return;
if (event.getResource().getSerializer() != null) {
try {
event
.getResource()
.getSerializer()
.write(event.getResource().getResponse().getOutputStream(), message);
} catch (Throwable ex) {
logger.warn("Serializer exception: message: " + message, ex);
throw new IOException(ex);
}
} else {
boolean isUsingStream =
(Boolean) event.getResource().getRequest().getAttribute(PROPERTY_USE_STREAM);
if (!isUsingStream) {
try {
r.getWriter();
} catch (IllegalStateException e) {
isUsingStream = true;
}
}
if (message instanceof List) {
for (String s : (List<String>) message) {
if (isUsingStream) {
r.getOutputStream().write(s.getBytes(r.getCharacterEncoding()));
r.getOutputStream().flush();
} else {
r.getWriter().write(s);
r.getWriter().flush();
}
}
} else {
if (isUsingStream) {
r.getOutputStream().write(message.toString().getBytes(r.getCharacterEncoding()));
r.getOutputStream().flush();
} else {
r.getWriter().write(message.toString());
r.getWriter().flush();
}
}
Boolean resumeOnBroadcast = event.getResource().resumeOnBroadcast();
if (!resumeOnBroadcast) {
// For legacy reason, check the attribute as well
Object o =
event.getResource().getRequest().getAttribute(ApplicationConfig.RESUME_ON_BROADCAST);
if (o != null && Boolean.class.isAssignableFrom(o.getClass())) {
resumeOnBroadcast = Boolean.class.cast(o);
}
}
if (resumeOnBroadcast != null && resumeOnBroadcast) {
event.getResource().resume();
}
}
}