public void registerItems() {
broadcaster
.getBroadcasterConfig()
.addFilter(
new PerRequestBroadcastFilter() {
@Override
public BroadcastAction filter(Object originalMessage, Object message) {
// TODO Auto-generated method stub
return new BroadcastAction(ACTION.CONTINUE, message);
}
@Override
public BroadcastAction filter(
AtmosphereResource resource, Object originalMessage, Object message) {
HttpServletRequest request = resource.getRequest();
return new BroadcastAction(ACTION.CONTINUE, getResponseObject(request));
}
});
broadcaster.getBroadcasterConfig().addFilter(new PollingDelayFilter());
broadcaster.getBroadcasterConfig().addFilter(new SendPageUpdateFilter());
broadcaster.getBroadcasterConfig().addFilter(new DuplicateBroadcastProtectionFilter());
broadcaster.getBroadcasterConfig().addFilter(new ResponseObjectFilter());
broadcaster.getBroadcasterConfig().addFilter(new MessageTypeFilter());
stateChangeListener =
new StateChangeListener() {
// don't react on update events
public void stateUpdated(Item item, State state) {
// if the group has a base item and thus might calculate its state
// as a DecimalType or other, we also consider it to be necessary to
// send an update to the client as the label of the item might have changed,
// even though its state is yet the same.
if (item instanceof GroupItem) {
GroupItem gItem = (GroupItem) item;
if (gItem.getBaseItem() != null) {
if (!broadcaster.getAtmosphereResources().isEmpty()) {
broadcaster.broadcast(item);
}
}
}
}
public void stateChanged(final Item item, State oldState, State newState) {
if (!broadcaster.getAtmosphereResources().isEmpty()) {
broadcaster.broadcast(item);
}
}
};
registerStateChangeListenerOnRelevantItems(broadcaster.getID(), stateChangeListener);
}
@GET
@Path("/{sitemapname: [a-zA-Z_0-9]*}/{pageid: [a-zA-Z_0-9]*}")
@Produces({MediaType.WILDCARD})
public SuspendResponse<Response> getPageData(
@Context HttpHeaders headers,
@PathParam("sitemapname") String sitemapname,
@PathParam("pageid") String pageId,
@QueryParam("type") String type,
@QueryParam("jsoncallback") @DefaultValue("callback") String callback,
@HeaderParam(HeaderConfig.X_ATMOSPHERE_TRANSPORT) String atmosphereTransport,
@Context AtmosphereResource resource) {
logger.debug(
"Received HTTP GET request at '{}' for media type '{}'.",
new String[] {uriInfo.getPath(), type});
if (atmosphereTransport == null || atmosphereTransport.isEmpty()) {
String responseType =
MediaTypeHelper.getResponseMediaType(headers.getAcceptableMediaTypes(), type);
if (responseType != null) {
Object responseObject =
responseType.equals(MediaTypeHelper.APPLICATION_X_JAVASCRIPT)
? new JSONWithPadding(
getPageBean(sitemapname, pageId, uriInfo.getBaseUriBuilder().build()), callback)
: getPageBean(sitemapname, pageId, uriInfo.getBaseUriBuilder().build());
throw new WebApplicationException(Response.ok(responseObject, responseType).build());
} else {
throw new WebApplicationException(Response.notAcceptable(null).build());
}
}
GeneralBroadcaster sitemapBroadcaster =
(GeneralBroadcaster)
BroadcasterFactory.getDefault()
.lookup(GeneralBroadcaster.class, resource.getRequest().getPathInfo(), true);
sitemapBroadcaster.addStateChangeListener(new SitemapStateChangeListener());
return new SuspendResponse.SuspendResponseBuilder<Response>()
.scope(SCOPE.REQUEST)
.resumeOnBroadcast(!ResponseTypeHelper.isStreamingTransport(resource.getRequest()))
.broadcaster(sitemapBroadcaster)
.outputComments(true)
.build();
}