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package com.sun.grizzly.container;
import com.sun.grizzly.comet.CometContext;
import com.sun.grizzly.comet.CometEngine;
import com.sun.grizzly.grizzlet.Grizzlet;
import com.sun.grizzly.tcp.ActionCode;
import java.io.File;
import com.sun.grizzly.tcp.Adapter;
import com.sun.grizzly.tcp.Request;
import com.sun.grizzly.tcp.Response;
import com.sun.grizzly.tcp.StaticResourcesAdapter;
import com.sun.grizzly.util.ClassLoaderUtil;
import java.util.concurrent.locks.ReentrantLock;
/**
* Standalone Comet implementation. This class is used when Comet is enabled
* from the Grizzly standalone WebServer. This class is responsible for invoking
* the Grizzlet defined when starting the Grizzly WebServer.
*
* @author Jeanfrancois Arcand
*/
public class GrizzletAdapter extends StaticResourcesAdapter implements Adapter {
public static final int ADAPTER_NOTES = 5;
public static final int POST = 6312;
public static final int GRIZZLET = 6;
/**
* All request to that context-path will be considered as comet enabled.
*/
private String cometContextName = "/grizzlet";
private ReentrantLock initializedLock = new ReentrantLock();
/**
* The Grizzlet associated with this Adapter.
*/
private Grizzlet grizzlet;
private String grizzletName;
public GrizzletAdapter() {
super();
}
public GrizzletAdapter(String cometContextName) {
super();
this.cometContextName = cometContextName;
}
/**
* Route the request to the comet implementation. If the request point to
* a static file, delegate the call to the Grizzly WebServer implementation.
*/
@Override
public void service(Request req, final Response res) throws Exception {
String uri = req.requestURI().toString();
File file = new File(getRootFolder(), uri);
if (file.isDirectory()) {
uri += "index.html";
file = new File(file, uri);
}
if (file.canRead()) {
super.service(req, res);
return;
}
CometEngine cometEngine = CometEngine.getEngine();
CometContext cometContext = cometEngine.getCometContext(cometContextName);
initializedLock.lock();
try {
if (cometContext == null) {
cometContext = cometEngine.register(cometContextName);
cometContext.setExpirationDelay(-1);
cometContext.setBlockingNotification(true);
}
if (grizzlet == null && grizzletName != null) {
grizzlet = (Grizzlet) ClassLoaderUtil.load(grizzletName);
}
} finally {
initializedLock.unlock();
}
GrizzletRequest cometReq = (GrizzletRequest) req.getNote(ADAPTER_NOTES);
GrizzletResponse cometRes = (GrizzletResponse) res.getNote(ADAPTER_NOTES);
AsyncConnectionImpl asyncConnection =
(AsyncConnectionImpl) req.getNote(GRIZZLET);
if (cometReq == null) {
cometReq = new GrizzletRequest(req);
cometRes = new GrizzletResponse(res);
cometReq.setGrizzletResponse(cometRes);
asyncConnection = new AsyncConnectionImpl();
// Set as notes so we don't create them on every request.
req.setNote(ADAPTER_NOTES, cometReq);
req.setNote(GRIZZLET, asyncConnection);
res.setNote(ADAPTER_NOTES, cometRes);
} else {
cometReq.setRequest(req);
cometRes.setResponse(res);
}
asyncConnection.setCometContext(cometContext);
asyncConnection.setRequest(cometReq);
asyncConnection.setResponse(cometRes);
asyncConnection.setGrizzlet(grizzlet);
try {
synchronized (grizzlet){
grizzlet.onRequest(asyncConnection);
}
} finally {
cometReq.recycle();
cometRes.recycle();
asyncConnection.recycle();
}
}
@Override
public void afterService(Request req, Response res)
throws Exception {
try {
req.action(ActionCode.ACTION_POST_REQUEST, null);
} catch (Throwable t) {
t.printStackTrace();
}
res.finish();
super.afterService(req, res);
}
/**
* Set the user defined {@link Grizzlet} implementation.
*/
public Grizzlet getGrizzlet() {
return grizzlet;
}
/**
* Return the user defined {@link Grizzlet} implementation.
*/
public void setGrizzlet(Grizzlet grizzlet) {
this.grizzlet = grizzlet;
}
public String getCometContextName() {
return cometContextName;
}
public void setCometContextName(String cometContextName) {
this.cometContextName = cometContextName;
}
/**
* Set the user defined {@link Grizzlet} implementation.
*/
public String getGrizzletName() {
return grizzletName;
}
/**
* Return the user defined {@link Grizzlet} implementation.
*/
public void setGrizzletName(String grizzletName) {
this.grizzletName = grizzletName;
}
}