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package com.sun.grizzly.container;
import com.sun.grizzly.comet.CometContext;
import com.sun.grizzly.comet.CometEvent;
import com.sun.grizzly.comet.CometHandler;
import com.sun.grizzly.grizzlet.AsyncConnection;
import com.sun.grizzly.grizzlet.AlreadyPausedException;
import com.sun.grizzly.grizzlet.Grizzlet;
import com.sun.grizzly.grizzlet.NotYetPausedException;
import com.sun.grizzly.util.LinkedTransferQueue;
import java.io.IOException;
import java.util.Iterator;
/**
* This class represent a possible asynchronous connection. An asynchronous
* connection can always be suspended or resumed, its associated request
* and response objects be used to construct a response, etc.
*
* This class hook the Grizzlet with the underlying CometHandler.
*
* @author Jeanfrancois Arcand
*/
public class AsyncConnectionImpl implements AsyncConnection {
private GrizzletRequest cometRequest;
private GrizzletResponse cometResponse;
public String message;
private boolean isPaused = false;
private CometContext cometContext;
private static LinkedTransferQueue<CometHandler> handlers;
private Grizzlet grizzlet;
private boolean isResuming = false;
private boolean hasPushEvent = false;
public AsyncConnectionImpl(){
handlers = new LinkedTransferQueue<CometHandler>();
}
public void setCometContext(CometContext cometContext){
this.cometContext = cometContext;
}
public GrizzletRequest getRequest() {
return cometRequest;
}
protected void setRequest(GrizzletRequest cometRequest) {
this.cometRequest = cometRequest;
}
public GrizzletResponse getResponse() {
return cometResponse;
}
protected void setResponse(GrizzletResponse cometResponse) {
this.cometResponse = cometResponse;
}
public boolean isSuspended() {
return isPaused;
}
public void suspend() throws AlreadyPausedException {
if (isPaused) throw new AlreadyPausedException();
isPaused = true;
CometEvent event = new CometEvent();
GrizzletCometHandler cometHandler = new GrizzletCometHandler();
cometHandler.setGrizzlet(grizzlet);
cometHandler.attach(cometRequest);
cometContext.addCometHandler(cometHandler);
handlers.add(cometHandler);
}
public void resume() throws NotYetPausedException {
Iterator<CometHandler> i = handlers.iterator();
while(i.hasNext()){
cometContext.removeCometHandler(i.next());
i.remove();
}
isPaused = false;
}
public boolean isResuming() {
return isResuming;
}
public void setIsResuming(boolean isResuming){
this.isResuming = isResuming;
}
public void push(String message) throws IOException{
this.message = message;
hasPushEvent = true;
cometContext.notify(this);
hasPushEvent = false;
}
public void sethasPushEvent(boolean hasPushEvent){
this.hasPushEvent = hasPushEvent;
}
public boolean hasPushEvent() {
return hasPushEvent;
}
public String getPushEvent() {
return message;
}
public boolean isGet() {
return cometRequest.getRequest().method().equals("GET");
}
public boolean isPost() {
return cometRequest.getRequest().method().equals("POST");
}
public void setGrizzlet(Grizzlet grizzlet) {
this.grizzlet = grizzlet;
}
public void recycle(){
grizzlet = null;
isPaused = false;
isResuming = false;
cometRequest = null;
cometResponse = null;
message = null;
hasPushEvent = false;
}
/**
* Return the number of suspended connections the current {@link Grizzlet}
* is having.
*
* @return the number of suspended connection.
*/
public int getSuspendedCount() {
return cometContext.getCometHandlers().size();
}
}