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package org.atmosphere.grizzly;
import com.sun.grizzly.http.servlet.ServletAdapter;
import com.sun.grizzly.tcp.http11.GrizzlyAdapter;
import org.atmosphere.container.GrizzlyCometSupport;
import org.atmosphere.cpr.AtmosphereHandler;
import org.atmosphere.cpr.AtmosphereServlet;
import javax.servlet.ServletContext;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLClassLoader;
/**
* Simple {@link GrizzlyAdapter} that can be used to embed Atmosphere using
* Grizzly.
*
* @author Jeanfrancois Arcand
*/
public class AtmosphereAdapter extends ServletAdapter {
private String resourcePackage = null;
private final AtmosphereServlet as = new GrizzlyAtmosphereServlet();
@Override
public void start() {
if (resourcePackage != null) {
addInitParameter("com.sun.jersey.config.property.packages", resourcePackage);
}
//addInitParameter("com.sun.jersey.config.property.resourceConfigClass", "com.sun.jersey.api.core.PackagesResourceConfig");
setServletInstance(as);
super.start();
}
/**
* Use {@link java.io.OutputStream} when flusing bytes. Default is <tt>true</tt> when
* the runtime module is used, and false when jersey.
*
* @param useStreaming If {@link java.io.OutputStream} sould be used.
*/
public void setUseStreamForFlushingComments(boolean useStreaming) {
as.setUseStreamForFlushingComments(useStreaming);
}
/**
* Add an {@link AtmosphereHandler}
*
* @param path Path to be added to.
* @param ah Handler for path.
*/
public void addAtmosphereHandler(String path, AtmosphereHandler ah) {
as.addAtmosphereHandler(path, ah);
}
/**
* Set the location of web application. This maps to Jersey's
* "com.sun.jersey.config.property.packages" property.
*
* @return the resourcePackage
*/
public String getResourcePackage() {
return resourcePackage;
}
/**
* Return the location of web application.
*
* @param resourcePackage the resourcePackage to set
*/
public void setResourcePackage(String resourcePackage) {
this.resourcePackage = resourcePackage;
}
private static class GrizzlyAtmosphereServlet extends AtmosphereServlet {
/**
* Auto detect the underlying Servlet Container we are running on.
*/
@Override
protected void autoDetectContainer() {
setUseStreamForFlushingComments(true);
cometSupport = new GrizzlyCometSupport(getAtmosphereConfig());
}
@Override
protected void autoDetectAtmosphereHandlers(ServletContext servletContext, URLClassLoader classLoader)
throws MalformedURLException, URISyntaxException {
try {
Class.forName("org.atmosphere.spade.AtmosphereSpadeLauncher");
}
catch (Exception ex) {
super.autoDetectAtmosphereHandlers(servletContext, classLoader);
return;
}
String realPath = servletContext.getRealPath(WEB_INF_CLASSES);
// Weblogic bug
if (realPath == null) {
URL u = servletContext.getResource(WEB_INF_CLASSES);
if (u == null) return;
realPath = u.getPath();
}
File f = new File(realPath);
// There is a bug in Grizzly 1.9.18 which doesn't construct the URL properly.
if (!f.exists()){
String ctxPath = servletContext.getContextPath();
if (System.getProperty("os.name").toLowerCase().startsWith("win")){
ctxPath = ctxPath.replace("/","\\");
}
int index = realPath.indexOf(ctxPath);
if (index < 1) {
index = realPath.length();
}
String trailer = realPath.substring(0,index);
f = new File(trailer + servletContext.getContextPath() + WEB_INF_CLASSES);
}
loadAtmosphereHandlersFromPath(classLoader, realPath);
}
}
}