package de.jochenbrissier.backyard.module;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.LinkedList;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.catalina.CometEvent;
import org.apache.catalina.CometEvent.EventType;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.google.inject.Inject;
import de.jochenbrissier.backyard.core.Event;
import de.jochenbrissier.backyard.core.EventListener;
import de.jochenbrissier.backyard.core.Message;
import de.jochenbrissier.backyard.util.MessagePattern;
import de.jochenbrissier.backyard.util.SendFailException;
/**
* implementation for tomcat 6.0.x comet processor
*
*
*
* @author jochen
*
*/
public class TomcatComet implements Event {
Log log = LogFactory.getLog(Event.class);
CometEvent ev;
boolean ready = false;
boolean error = false;
HttpServletRequest req;
HttpServletResponse res;
LinkedList<Message> list = new LinkedList<Message>();
int timeout = 60000;
MessagePattern mp;
@Inject
public TomcatComet(MessagePattern mp) {
this.mp = mp;
}
public void addMessage(Message message) {
list.add(message);
}
public void close() throws SendFailException {
try {
PrintWriter wr = res.getWriter();
wr.write(mp.getMessages(list));
wr.close();
wr.flush();
this.ev.close();
} catch (Exception e) {
this.ready = false;
this.error = true;
throw new SendFailException();
}
finally{
list.clear();
}
}
public ServletRequest getRequest() {
// TODO Auto-generated method stub
return null;
}
public ServletResponse getResponse() {
// TODO Auto-generated method stub
return null;
}
public long getTimeOut() {
// TODO Auto-generated method stub
return 0;
}
public void init() {
// TODO: i don't know :)
}
public void init(HttpServletRequest req, HttpServletResponse res) {
this.req = req;
this.res = res;
init();
}
public boolean isError() {
// TODO Auto-generated method stub
return error;
}
public boolean isReady() {
// TODO Auto-generated method stub
return ready;
}
public void setEvent(Object Event) {
if (Event instanceof CometEvent) {
this.ev = (CometEvent) Event;
this.res = ev.getHttpServletResponse();
this.req = ev.getHttpServletRequest();
try {
ev.setTimeout(timeout);
} catch (UnsupportedOperationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
error = true;
ready = false;
e.printStackTrace();
} catch (ServletException e) {
error = true;
ready = false;
e.printStackTrace();
}
EventType eventType = this.ev.getEventType();
if (eventType == CometEvent.EventType.BEGIN) {
this.ready = true;
}
if (eventType == CometEvent.EventType.END) {
log.debug("event end");
this.ready = false;
try {
ev.close();
log.debug("event closed");
} catch (IOException e) {
// TODO Auto-generated catch block
log.debug(e);
}
}
if (eventType == CometEvent.EventType.READ) {
// TODO: NO IDEA! ;)
}
if (eventType == CometEvent.EventType.ERROR) {
error = true;
ready = false;
if (this.ev.getEventSubType() == CometEvent.EventSubType.CLIENT_DISCONNECT) {
error = true;
ready = false;
log.debug("client_disconected");
}
if (this.ev.getEventSubType() == CometEvent.EventSubType.TIMEOUT) {
timeout();
}
if (this.ev.getEventSubType() != CometEvent.EventSubType.TIMEOUT) {
error = true;
ready = false;
try {
close();
} catch (SendFailException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
error = true;
ready = false;
}
}
}
public void setEventListener(EventListener eventListener) {
// TODO Auto-generated method stub
}
public void setRequest(HttpServletRequest req) {
// TODO Auto-generated method stub
}
public void setRespons(HttpServletResponse res) {
// TODO Auto-generated method stub
}
public void setTimeOut(long timeout) {
// TODO Auto-generated method stub
}
private void timeout() {
addMessage(new Message("timeout"));
}
}