Added pubsub support

src/main/java/redis/clients/jedis/JedisPubSub.java

@@ -0,0 +1,84 @@
+package redis.clients.jedis;
+
+import java.util.List;
+
+public abstract class JedisPubSub {
+    private int subscribedChannels = 0;
+    private Client client;
+
+    public abstract void onMessage(String channel, String message);
+
+    public abstract void onPMessage(String pattern, String channel,
+	    String message);
+
+    public abstract void onSubscribe(String channel, int subscribedChannels);
+
+    public abstract void onUnsubscribe(String channel, int subscribedChannels);
+
+    public abstract void onPUnsubscribe(String pattern, int subscribedChannels);
+
+    public abstract void onPSubscribe(String pattern, int subscribedChannels);
+
+    protected void unsubscribe() {
+	client.unsubscribe();
+    }
+
+    protected void unsubscribe(String... channels) {
+	client.unsubscribe(channels);
+    }
+
+    protected void subscribe(String... channels) {
+	client.subscribe(channels);
+    }
+
+    public boolean isSubscribed() {
+	return subscribedChannels > 0;
+    }
+
+    public void proceedWithPatterns(Client client, String... patterns) {
+	this.client = client;
+	client.psubscribe(patterns);
+	process(client);
+    }
+
+    public void proceed(Client client, String... channels) {
+	this.client = client;
+	client.subscribe(channels);
+	process(client);
+    }
+
+    private void process(Client client) {
+	do {
+	    List<Object> reply = client.getObjectMultiBulkReply();
+	    if (reply.get(0).equals("subscribe")) {
+		subscribedChannels = (Integer) reply.get(2);
+		onSubscribe((String) reply.get(1), subscribedChannels);
+	    } else if (reply.get(0).equals("unsubscribe")) {
+		subscribedChannels = (Integer) reply.get(2);
+		onUnsubscribe((String) reply.get(1), subscribedChannels);
+	    } else if (reply.get(0).equals("message")) {
+		onMessage((String) reply.get(1), (String) reply.get(2));
+	    } else if (reply.get(0).equals("pmessage")) {
+		onPMessage((String) reply.get(1), (String) reply.get(2),
+			(String) reply.get(3));
+	    } else if (reply.get(0).equals("psubscribe")) {
+		subscribedChannels = (Integer) reply.get(2);
+		onPSubscribe((String) reply.get(1), subscribedChannels);
+	    } else if (reply.get(0).equals("punsubscribe")) {
+		subscribedChannels = (Integer) reply.get(2);
+		onPUnsubscribe((String) reply.get(1), subscribedChannels);
+	    } else {
+		throw new JedisException("Unknown message type: "
+			+ reply.get(0));
+	    }
+	} while (isSubscribed());
+    }
+
+    protected void punsubscribe() {
+	client.punsubscribe();
+    }
+
+    protected void punsubscribe(String... patterns) {
+	client.punsubscribe(patterns);
+    }
+}