Examples with WebsocketChannelMetadata org.apache.myfaces.push.cdi.WebsocketChannelMetadata used on opensource projects

Example 1 with WebsocketChannelMetadata

use of org.apache.myfaces.push.cdi.WebsocketChannelMetadata in project myfaces by apache.

the class WebsocketComponentRenderer method encodeEnd.

@Override
public void encodeEnd(FacesContext facesContext, UIComponent c) throws IOException {
    // check for NP
    super.encodeEnd(facesContext, c);
    UIWebsocket component = (UIWebsocket) c;
    WebsocketInit init = (WebsocketInit) facesContext.getViewRoot().findComponent((String) component.getAttributes().get(_WebsocketInit.ATTRIBUTE_COMPONENT_ID));
    ResponseWriter writer = facesContext.getResponseWriter();
    String channel = component.getChannel();
    // TODO: use a single bean and entry point for this algorithm.
    BeanManager beanManager = CDIUtils.getBeanManager(facesContext);
    WebsocketChannelTokenBuilderBean channelTokenBean = CDIUtils.get(beanManager, WebsocketChannelTokenBuilderBean.class);
    // This bean is required because you always need to register the token, so it can be properly destroyed
    WebsocketViewBean viewTokenBean = CDIUtils.get(beanManager, WebsocketViewBean.class);
    WebsocketSessionBean sessionTokenBean = CDIUtils.get(beanManager, WebsocketSessionBean.class);
    // Create channel token
    // TODO: Use ResponseStateManager to create the token
    String scope = component.getScope() == null ? "application" : component.getScope();
    WebsocketChannelMetadata metadata = new WebsocketChannelMetadata(channel, scope, component.getUser(), component.isConnected());
    String channelToken = null;
    // creation
    if (!component.isConnected()) {
        channelToken = viewTokenBean.getChannelToken(metadata);
    }
    if (channelToken == null) {
        // No channel token found for that combination, create a new token for this view
        channelToken = channelTokenBean.createChannelToken(facesContext, channel);
        // Register channel in view scope to chain discard view algorithm using @PreDestroy
        viewTokenBean.registerToken(channelToken, metadata);
        // Register channel in session scope to allow validation on handshake ( WebsocketConfigurator )
        sessionTokenBean.registerToken(channelToken, metadata);
    }
    // Ask these two scopes
    WebsocketApplicationBean appTokenBean = CDIUtils.get(beanManager, WebsocketApplicationBean.class, false);
    // Register token and metadata in the proper bean
    if (scope.equals("view")) {
        viewTokenBean.registerWebsocketSession(channelToken, metadata);
    } else if (scope.equals("session")) {
        sessionTokenBean = (sessionTokenBean != null) ? sessionTokenBean : CDIUtils.get(CDIUtils.getBeanManager(facesContext), WebsocketSessionBean.class);
        sessionTokenBean.registerWebsocketSession(channelToken, metadata);
    } else {
        // Default application
        appTokenBean = (appTokenBean != null) ? appTokenBean : CDIUtils.get(CDIUtils.getBeanManager(facesContext), WebsocketApplicationBean.class);
        appTokenBean.registerWebsocketSession(channelToken, metadata);
    }
    writer.startElement(HTML.SCRIPT_ELEM, component);
    HtmlRendererUtils.renderScriptType(facesContext, writer);
    StringBuilder sb = new StringBuilder(50);
    sb.append("faces.push.init(");
    sb.append('\'');
    sb.append(component.getClientId());
    sb.append('\'');
    sb.append(',');
    sb.append('\'');
    sb.append(facesContext.getExternalContext().encodeWebsocketURL(facesContext.getApplication().getViewHandler().getWebsocketURL(facesContext, component.getChannel() + '?' + channelToken)));
    sb.append('\'');
    sb.append(',');
    sb.append('\'');
    sb.append(component.getChannel());
    sb.append('\'');
    sb.append(',');
    sb.append(component.getOnopen());
    sb.append(',');
    sb.append(component.getOnmessage());
    sb.append(',');
    sb.append(component.getOnerror());
    sb.append(',');
    sb.append(component.getOnclose());
    sb.append(',');
    sb.append(getBehaviorScripts(facesContext, component));
    sb.append(',');
    sb.append(component.isConnected());
    sb.append(");");
    writer.write(sb.toString());
    writer.endElement(HTML.SCRIPT_ELEM);
    if (!facesContext.getPartialViewContext().isAjaxRequest()) {
        ResponseWriter responseWriter = facesContext.getResponseWriter();
        while (!(responseWriter instanceof HtmlBufferResponseWriterWrapper) && responseWriter instanceof FacesWrapper) {
            responseWriter = (ResponseWriter) ((FacesWrapper) responseWriter).getWrapped();
        }
        HtmlBufferResponseWriterWrapper htmlBufferResponseWritter = (HtmlBufferResponseWriterWrapper) responseWriter;
        init.getUIWebsocketMarkupList().add(htmlBufferResponseWritter.toString());
        facesContext.setResponseWriter(htmlBufferResponseWritter.getInitialWriter());
    }
}