/**
* JBoss, Home of Professional Open Source
* Copyright Red Hat, Inc., and individual contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.aerogear.simplepush.vertx;
import static org.jboss.aerogear.simplepush.protocol.impl.json.JsonUtil.fromJson;
import static org.jboss.aerogear.simplepush.protocol.impl.json.JsonUtil.toJson;
import java.util.Set;
import java.util.concurrent.ConcurrentMap;
import org.jboss.aerogear.simplepush.protocol.AckMessage;
import org.jboss.aerogear.simplepush.protocol.HelloMessage;
import org.jboss.aerogear.simplepush.protocol.HelloResponse;
import org.jboss.aerogear.simplepush.protocol.MessageType;
import org.jboss.aerogear.simplepush.protocol.RegisterResponse;
import org.jboss.aerogear.simplepush.protocol.UnregisterMessage;
import org.jboss.aerogear.simplepush.protocol.UnregisterResponse;
import org.jboss.aerogear.simplepush.protocol.Ack;
import org.jboss.aerogear.simplepush.protocol.impl.AckMessageImpl;
import org.jboss.aerogear.simplepush.protocol.impl.HelloMessageImpl;
import org.jboss.aerogear.simplepush.protocol.impl.NotificationMessageImpl;
import org.jboss.aerogear.simplepush.protocol.impl.PingMessageImpl;
import org.jboss.aerogear.simplepush.protocol.impl.RegisterMessageImpl;
import org.jboss.aerogear.simplepush.protocol.impl.UnregisterMessageImpl;
import org.jboss.aerogear.simplepush.protocol.impl.json.JsonUtil;
import org.jboss.aerogear.simplepush.server.SimplePushServer;
import org.jboss.aerogear.simplepush.util.UUIDUtil;
import org.vertx.java.core.Handler;
import org.vertx.java.core.Vertx;
import org.vertx.java.core.buffer.Buffer;
import org.vertx.java.core.logging.Logger;
import org.vertx.java.core.sockjs.SockJSSocket;
import org.vertx.java.platform.Container;
/**
* Vert.x SimplePush Server implementation.
*/
public class SimplePushServerHandler implements Handler<SockJSSocket> {
private final SimplePushServer simplePushServer;
private final Logger logger;
private final ConcurrentMap<String, String> writeHandlerMap;
private final ConcurrentMap<String, Long> lastAccessedMap;
private final Vertx vertx;
private final Container container;
private String uaid;
public SimplePushServerHandler(final SimplePushServer simplePushServer, final Vertx vertx, final Container container) {
this.simplePushServer = simplePushServer;
this.container = container;
logger = container.logger();
this.vertx = vertx;
writeHandlerMap = vertx.sharedData().getMap(VertxSimplePushServer.WRITE_HANDLER_MAP);
lastAccessedMap = vertx.sharedData().getMap(VertxSimplePushServer.LAST_ACCESSED_MAP);
}
@Override
public void handle(final SockJSSocket sock) {
sock.dataHandler(new Handler<Buffer>() {
@Override
public void handle(final Buffer buffer) {
final MessageType messageType = JsonUtil.parseFrame(buffer.toString());
switch (messageType.getMessageType()) {
case HELLO:
HelloMessage handshakeMessage = fromJson(buffer.toString(), HelloMessageImpl.class);
if (!writeHandlerMap.containsKey(handshakeMessage.getUAID())) {
handshakeMessage = new HelloMessageImpl(UUIDUtil.newUAID());
}
final HelloResponse helloResponse = simplePushServer.handleHandshake(handshakeMessage);
sock.write(new Buffer(toJson(helloResponse)));
uaid = helloResponse.getUAID();
writeHandlerMap.put(uaid.toString(), sock.writeHandlerID());
lastAccessedMap.put(uaid.toString(), System.currentTimeMillis());
logger.info("UserAgent [" + uaid + "] handshake done");
break;
case REGISTER:
if (checkHandshakeCompleted(uaid)) {
final RegisterResponse response = simplePushServer.handleRegister(fromJson(buffer.toString(), RegisterMessageImpl.class), uaid);
sock.write(new Buffer(toJson(response)));
logger.info("UserAgent [" + uaid + "] Registered[" + response + "]");
}
break;
case UNREGISTER:
if (checkHandshakeCompleted(uaid)) {
final UnregisterMessage unregister = fromJson(buffer.toString(), UnregisterMessageImpl.class);
final UnregisterResponse response = simplePushServer.handleUnregister(unregister, uaid);
sock.write(new Buffer(toJson(response)));
logger.info("UserAgent [" + uaid + "] Unregistered[" + response.getChannelId() + "]");
}
break;
case ACK:
if (checkHandshakeCompleted(uaid)) {
final AckMessage ack = fromJson(buffer.toString(), AckMessageImpl.class);
simplePushServer.handleAcknowledgement(ack, uaid);
processUnacked(uaid);
}
break;
case PING:
sock.write(new Buffer(PingMessageImpl.JSON));
break;
default:
break;
}
updateAccessedTime(uaid);
}
});
}
private boolean checkHandshakeCompleted(final String uaid) {
if (uaid == null) {
logger.debug("Hello frame has not been sent");
return false;
}
return true;
}
private void updateAccessedTime(final String uaid) {
if (uaid != null) {
lastAccessedMap.put(uaid, System.currentTimeMillis());
}
}
private void processUnacked(final String uaid) {
final Set<Ack> unacked = simplePushServer.getUnacknowledged(uaid);
if (!unacked.isEmpty()) {
final Long interval = container.config().getLong("ackInterval", 60000);
vertx.setPeriodic(interval, new Handler<Long>() {
public void handle(final Long timerID) {
final Set<Ack> unacked = simplePushServer.getUnacknowledged(uaid);
if (unacked.isEmpty()) {
logger.info("Nothing to ack. Stopping periodic task");
vertx.cancelTimer(timerID);
} else {
logger.info("Resending " + unacked);
final Buffer buf = new Buffer(toJson(new NotificationMessageImpl(unacked)));
vertx.eventBus().send(writeHandlerMap.get(uaid.toString()), buf);
}
}
});
}
}
}