package org.bigbluebutton.voiceconf.messaging;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import org.red5.logging.Red5LoggerFactory;
import org.slf4j.Logger;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPubSub;
public class MessageReceiver {
private static Logger log = Red5LoggerFactory.getLogger(MessageReceiver.class, "bigbluebutton");
private ReceivedMessageHandler handler;
private JedisPool redisPool;
private volatile boolean receiveMessage = false;
private final Executor msgReceiverExec = Executors.newSingleThreadExecutor();
public void stop() {
receiveMessage = false;
}
public void start() {
log.info("Ready to receive messages from Redis pubsub.");
try {
receiveMessage = true;
final Jedis jedis = redisPool.getResource();
Runnable messageReceiver = new Runnable() {
public void run() {
if (receiveMessage) {
jedis.psubscribe(new PubSubListener(), MessagingConstants.TO_BBB_APPS_PATTERN);
}
}
};
msgReceiverExec.execute(messageReceiver);
} catch (Exception e) {
log.error("Error subscribing to channels: " + e.getMessage());
}
}
public void setRedisPool(JedisPool redisPool){
this.redisPool = redisPool;
}
public void setMessageHandler(ReceivedMessageHandler handler) {
this.handler = handler;
}
private class PubSubListener extends JedisPubSub {
public PubSubListener() {
super();
}
@Override
public void onMessage(String channel, String message) {
// Not used.
}
@Override
public void onPMessage(String pattern, String channel, String message) {
handler.handleMessage(pattern, channel, message);
}
@Override
public void onPSubscribe(String pattern, int subscribedChannels) {
log.debug("Subscribed to the pattern: " + pattern);
}
@Override
public void onPUnsubscribe(String pattern, int subscribedChannels) {
// Not used.
}
@Override
public void onSubscribe(String channel, int subscribedChannels) {
// Not used.
}
@Override
public void onUnsubscribe(String channel, int subscribedChannels) {
// Not used.
}
}
}