com.sun.grizzly.cometd.BayeuxCometHandler Maven / Gradle / Ivy
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package com.sun.grizzly.cometd;
import com.sun.grizzly.comet.CometContext;
import com.sun.grizzly.comet.CometEvent;
import com.sun.grizzly.cometd.bayeux.ConnectRequest;
import com.sun.grizzly.cometd.bayeux.ConnectResponse;
import com.sun.grizzly.cometd.bayeux.Advice;
import com.sun.grizzly.cometd.bayeux.Data;
import com.sun.grizzly.cometd.bayeux.DeliverResponse;
import com.sun.grizzly.cometd.bayeux.DisconnectRequest;
import com.sun.grizzly.cometd.bayeux.DisconnectResponse;
import com.sun.grizzly.cometd.bayeux.HandshakeRequest;
import com.sun.grizzly.cometd.bayeux.HandshakeResponse;
import com.sun.grizzly.cometd.bayeux.PublishRequest;
import com.sun.grizzly.cometd.bayeux.PublishResponse;
import com.sun.grizzly.cometd.bayeux.ReconnectRequest;
import com.sun.grizzly.cometd.bayeux.ReconnectResponse;
import com.sun.grizzly.cometd.bayeux.SubscribeRequest;
import com.sun.grizzly.cometd.bayeux.SubscribeResponse;
import com.sun.grizzly.cometd.bayeux.UnsubscribeRequest;
import com.sun.grizzly.cometd.bayeux.UnsubscribeResponse;
import com.sun.grizzly.cometd.bayeux.Verb;
import java.io.IOException;
import java.util.Random;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentLinkedQueue;
/**
* This class implement the Bauyeux Server side protocol.
*
* @author Jeanfrancois Arcand
* @author TAKAI, Naoto
*/
public class BayeuxCometHandler extends BayeuxCometHandlerBase{
public final static String DEFAULT_CONTENT_TYPE ="application/json-comment-filtered";
public final static String BAYEUX_COMET_HANDLER = "bayeuxCometHandler";
private ConcurrentHashMap activeChannels
= new ConcurrentHashMap();
private Random random = new Random();
private ConcurrentHashMap activeCometHandlers =
new ConcurrentHashMap();
public void onHandshake(CometEvent event) throws IOException {
CometdContext cometdContext = (CometdContext)event.attachment();
CometdRequest req = cometdContext.getRequest();
CometdResponse res = cometdContext.getResponse();
HandshakeRequest handshakeReq = (HandshakeRequest)cometdContext.getVerb();
HandshakeResponse handshakeRes = new HandshakeResponse(handshakeReq);
handshakeRes.setAdvice(new Advice());
if (handshakeReq.isValid()) {
String clientId = null;
synchronized(random){
clientId = String.valueOf(Long.toHexString(random.nextLong()));
}
// XXX Why do we need to cache the ID. Memory leak right now
handshakeRes.setClientId(clientId);
} else {
handshakeRes.setSuccessful(false);
handshakeRes.setError("501::invalid handshake");
}
res.setContentType(DEFAULT_CONTENT_TYPE);
res.write(handshakeRes.toJSON());
res.flush();
}
public void onConnect(CometEvent event) throws IOException {
CometdContext cometdContext = (CometdContext)event.attachment();
CometdRequest req = cometdContext.getRequest();
CometdResponse res = cometdContext.getResponse();
ConnectRequest connectReq = (ConnectRequest)cometdContext.getVerb();
ConnectResponse connectRes = new ConnectResponse(connectReq);
connectRes.setAdvice(new Advice());
if (!connectReq.isValid()) {
connectRes.setError("501::invalid connect");
}
String subscribedChannel = activeChannels.get(connectReq.getClientId());
if (subscribedChannel != null){
CometContext cometContext = event.getCometContext();
DataHandler dataHandler = new DataHandler();
dataHandler.attach(new Object[]{req,res});
dataHandler.setChannel(subscribedChannel);
dataHandler.setClientId(connectReq.getClientId());
activeCometHandlers.put(connectReq.getClientId(),dataHandler);
event.getCometContext().addCometHandler(dataHandler);
connectRes.setAdvice(null);
}
String jsonMessage = (subscribedChannel != null ?
connectRes.toLongPolledJSON() : connectRes.toJSON());
res.setContentType(DEFAULT_CONTENT_TYPE);
res.write(jsonMessage);
res.flush();
}
@SuppressWarnings("unchecked")
public void onDisconnect(CometEvent event) throws IOException {
CometdContext cometdContext = (CometdContext)event.attachment();
CometdRequest req = cometdContext.getRequest();
CometdResponse res = cometdContext.getResponse();
DisconnectRequest disconnectReq = (DisconnectRequest)cometdContext.getVerb();
DisconnectResponse disconnectRes = new DisconnectResponse(disconnectReq);
if (!disconnectReq.isValid()) {
disconnectRes.setError("501::invalid disonnect");
}
DataHandler dataHandler =
activeCometHandlers.remove(disconnectReq.getClientId());
if (dataHandler != null){
event.getCometContext().notify("disconnecting",
CometEvent.TERMINATE,dataHandler.hashCode());
}
res.setContentType(DEFAULT_CONTENT_TYPE);
res.write(disconnectRes.toJSON());
res.flush();
}
public void onReconnect(CometEvent event) throws IOException {
CometdContext cometdContext = (CometdContext)event.attachment();
CometdRequest req = cometdContext.getRequest();
CometdResponse res = cometdContext.getResponse();
ReconnectRequest reconnectReq = (ReconnectRequest)cometdContext.getVerb();
ReconnectResponse reconnectRes = new ReconnectResponse(reconnectReq);
if (!reconnectReq.isValid()) {
reconnectRes.setError("501::invalid reconnect");
}
res.setContentType(DEFAULT_CONTENT_TYPE);
res.write(reconnectRes.toJSON());
res.flush();
}
@SuppressWarnings("unchecked")
public void onSubscribe(CometEvent event) throws IOException {
CometdContext cometdContext = (CometdContext)event.attachment();
CometdRequest req = cometdContext.getRequest();
CometdResponse res = cometdContext.getResponse();
SubscribeRequest subscribeReq = (SubscribeRequest)cometdContext.getVerb();
SubscribeResponse subscribeRes = new SubscribeResponse(subscribeReq);
if (!subscribeReq.isValid()) {
subscribeRes.setError("501::invalid subscribe");
}
activeChannels.put(subscribeReq.getClientId(),subscribeReq.getSubscription());
res.setContentType(DEFAULT_CONTENT_TYPE);
res.write(subscribeRes.toJSON());
res.flush();
}
@SuppressWarnings("unchecked")
public void onUnsubscribe(CometEvent event) throws IOException {
CometdContext cometdContext = (CometdContext)event.attachment();
CometdRequest req = cometdContext.getRequest();
CometdResponse res = cometdContext.getResponse();
UnsubscribeRequest unsubscribeReq = (UnsubscribeRequest)cometdContext.getVerb();
UnsubscribeResponse unsubscribeRes = new UnsubscribeResponse(unsubscribeReq);
if (!unsubscribeReq.isValid()) {
unsubscribeRes.setError("501::invalid unsubscribe");
}
res.setContentType(DEFAULT_CONTENT_TYPE);
res.write(unsubscribeRes.toJSON());
res.flush();
}
@SuppressWarnings("unchecked")
public void onPublish(CometEvent event) throws IOException {
CometdContext cometdContext = (CometdContext)event.attachment();
CometdRequest req = cometdContext.getRequest();
CometdResponse res = cometdContext.getResponse();
PublishRequest publishReq = (PublishRequest)cometdContext.getVerb();
PublishResponse publishRes = new PublishResponse(publishReq);
DeliverResponse deliverRes = null;
if (publishReq.isValid()) {
publishRes.setSuccessful(true);
Data data = publishReq.getData();
if (data != null) {
deliverRes = new DeliverResponse(publishReq);
if (publishReq.isFirst()) {
deliverRes.setFirst(false);
deliverRes.setFollow(true);
}
if (publishReq.isLast()) {
publishRes.setLast(false);
deliverRes.setFollow(true);
deliverRes.setLast(true);
}
}
} else {
publishRes.setSuccessful(false);
publishRes.setError("501:: invalid publish");
}
res.setContentType(DEFAULT_CONTENT_TYPE);
res.write(publishRes.toJSON());
if (deliverRes != null) {
res.write(deliverRes.toJSON());
}
res.flush();
if (deliverRes != null) {
event.getCometContext().notify(deliverRes);
}
}
public final static CometdContext newCometdContext(final CometdRequest req,
final CometdResponse res,final Verb verb){
return new CometdContext(){
public Verb getVerb(){
return verb;
}
public CometdRequest getRequest(){
return req;
}
public CometdResponse getResponse(){
return res;
}
};
}
public void onTerminate(CometEvent event) throws IOException {
onInterrupt(event);
}
public void onInterrupt(CometEvent event) throws IOException {
}
// ---------------------------------------------------- Reserved but not used
public void onPing(CometEvent event) throws IOException {
}
public void onStatus(CometEvent event) throws IOException {
}
public String getChannel() {
return BAYEUX_COMET_HANDLER;
}
public void setChannel(String channel) {
// Not supported
}
}
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