org.primefaces.push.PushServlet Maven / Gradle / Ivy
/*
* Copyright 2009-2014 PrimeTek.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.primefaces.push;
import org.atmosphere.client.TrackMessageSizeInterceptor;
import org.atmosphere.cpr.ApplicationConfig;
import org.atmosphere.cpr.AtmosphereConfig;
import org.atmosphere.cpr.AtmosphereFramework;
import org.atmosphere.cpr.AtmosphereServlet;
import org.atmosphere.cpr.MetaBroadcaster;
import org.atmosphere.interceptor.AtmosphereResourceLifecycleInterceptor;
import org.primefaces.push.impl.PushEndpointProcessor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
/**
* A {@link org.primefaces.push.PushServlet} is responsible for installing the {@link org.atmosphere.cpr.AtmosphereFramework} and bridge
* the PrimeFaces runtime with Atmosphere's components.
*/
public class PushServlet extends AtmosphereServlet {
private final Logger logger = LoggerFactory.getLogger(PushServlet.class.getName());
/**
* Create an Atmosphere Servlet.
*/
public PushServlet() {
this(false);
}
/**
* Create an Atmosphere Servlet.
*
* @param isFilter true if this instance is used as an {@link org.atmosphere.cpr.AtmosphereFilter}
*/
public PushServlet(boolean isFilter) {
super(isFilter, true);
}
/**
* Create an Atmosphere Servlet.
*
* @param isFilter true if this instance is used as an {@link org.atmosphere.cpr.AtmosphereFilter}
* @param autoDetectHandlers
*/
public PushServlet(boolean isFilter, boolean autoDetectHandlers) {
super(isFilter, autoDetectHandlers);
}
protected PushServlet configureFramework(ServletConfig sc) throws ServletException {
super.configureFramework(sc, false);
framework().interceptor(new AtmosphereResourceLifecycleInterceptor())
.interceptor(new TrackMessageSizeInterceptor())
.addAnnotationPackage(PushEndpointProcessor.class);
framework().getAtmosphereConfig().startupHook(new AtmosphereConfig.StartupHook() {
public void started(AtmosphereFramework framework) {
configureMetaBroadcasterCache(framework);
}
});
boolean notConfigured = sc.getInitParameter(ApplicationConfig.READ_GET_BODY) == null;
if (notConfigured) {
// For Backward compatibility with Atmosphere 2.2.x
framework().addInitParameter(ApplicationConfig.READ_GET_BODY, "true");
}
framework().init(sc);
PushContextFactory pcf = new PushContextFactory(framework().getAtmosphereConfig().metaBroadcaster());
PushContext c = pcf.getPushContext();
if (PushContextImpl.class.isAssignableFrom(c.getClass())) {
framework().asyncSupportListener(PushContextImpl.class.cast(c));
}
try {
framework().newClassInstance(EventBusFactory.class,EventBusFactory.class);
} catch (Exception ex) {
logger.warn("", ex);
}
if (framework().getAtmosphereHandlers().size() == 0) {
logger.error("No Annotated class using @PushEndpoint found. Push will not work.");
}
logger.debug("EventBus installed {}", EventBusFactory.getDefault().eventBus());
return this;
}
protected void configureMetaBroadcasterCache(AtmosphereFramework framework){
MetaBroadcaster m = framework.metaBroadcaster();
m.cache(new MetaBroadcaster.ThirtySecondsCache(m, framework.getAtmosphereConfig()));
}
}