Examples with BroadcastFilter org.atmosphere.cpr.BroadcastFilter used on opensource projects

Example 1 with BroadcastFilter

use of org.atmosphere.cpr.BroadcastFilter in project atmosphere by Atmosphere.

the class JavaScriptProtocol method inspect.

@Override
public Action inspect(final AtmosphereResource ar) {
    if (Utils.webSocketMessage(ar))
        return Action.CONTINUE;
    final AtmosphereResourceImpl r = AtmosphereResourceImpl.class.cast(ar);
    final AtmosphereRequest request = r.getRequest(false);
    final AtmosphereResponse response = r.getResponse(false);
    String uuid = request.getHeader(HeaderConfig.X_ATMOSPHERE_TRACKING_ID);
    String handshakeUUID = request.getHeader(HeaderConfig.X_ATMO_PROTOCOL);
    if (uuid != null && uuid.equals("0") && handshakeUUID != null) {
        if (enforceAtmosphereVersion) {
            String javascriptVersion = request.getHeader(HeaderConfig.X_ATMOSPHERE_FRAMEWORK);
            int version = 0;
            if (javascriptVersion != null) {
                version = parseVersion(javascriptVersion.split("-")[0]);
            }
            if (version < 221) {
                logger.error("Invalid Atmosphere Version {}", javascriptVersion);
                response.setStatus(501);
                response.addHeader(X_ATMOSPHERE_ERROR, "Atmosphere Protocol version not supported.");
                try {
                    response.flushBuffer();
                } catch (IOException e) {
                }
                return Action.CANCELLED;
            }
        }
        request.header(HeaderConfig.X_ATMO_PROTOCOL, null);
        // Extract heartbeat data
        int heartbeatInterval = 0;
        String heartbeatData = "";
        for (final AtmosphereInterceptor interceptor : framework.interceptors()) {
            if (HeartbeatInterceptor.class.isAssignableFrom(interceptor.getClass())) {
                final HeartbeatInterceptor heartbeatInterceptor = HeartbeatInterceptor.class.cast(interceptor);
                heartbeatInterval = heartbeatInterceptor.clientHeartbeatFrequencyInSeconds() * 1000;
                heartbeatData = new String(heartbeatInterceptor.getPaddingBytes());
                break;
            }
        }
        String message;
        if (enforceAtmosphereVersion) {
            // UUID since 1.0.10
            message = new StringBuilder(r.uuid()).append(wsDelimiter).append(heartbeatInterval).append(wsDelimiter).append(heartbeatData).append(wsDelimiter).toString();
        } else {
            // UUID since 1.0.10
            message = r.uuid();
        }
        // https://github.com/Atmosphere/atmosphere/issues/993
        final AtomicReference<String> protocolMessage = new AtomicReference<String>(message);
        if (r.getBroadcaster().getBroadcasterConfig().hasFilters()) {
            for (BroadcastFilter bf : r.getBroadcaster().getBroadcasterConfig().filters()) {
                if (TrackMessageSizeFilter.class.isAssignableFrom(bf.getClass())) {
                    protocolMessage.set((String) f.filter(r.getBroadcaster().getID(), r, protocolMessage.get(), protocolMessage.get()).message());
                    break;
                }
            }
        }
        if (!Utils.resumableTransport(r.transport())) {
            OnSuspend a = new OnSuspend() {

                @Override
                public void onSuspend(AtmosphereResourceEvent event) {
                    if (delayProtocolInMilliseconds > 0) {
                        executorService.schedule(new Runnable() {

                            @Override
                            public void run() {
                                response.write(protocolMessage.get());
                            }
                        }, delayProtocolInMilliseconds, TimeUnit.MILLISECONDS);
                    } else {
                        response.write(protocolMessage.get());
                        try {
                            response.flushBuffer();
                        } catch (IOException e) {
                            logger.trace("", e);
                        }
                    }
                    r.removeEventListener(this);
                }
            };
            // Pass the information to Servlet Based Framework
            request.setAttribute(CALLBACK_JAVASCRIPT_PROTOCOL, a);
            r.addEventListener(a);
        } else {
            response.write(protocolMessage.get());
        }
        // We don't need to reconnect here
        if (r.transport() == AtmosphereResource.TRANSPORT.WEBSOCKET || r.transport() == AtmosphereResource.TRANSPORT.STREAMING || r.transport() == AtmosphereResource.TRANSPORT.SSE) {
            return Action.CONTINUE;
        } else {
            return Action.CANCELLED;
        }
    }
    return Action.CONTINUE;
}