Initial JedisSentinelPool based on code from hamsterready/jedis-sentinel-pool.

Given a master name and a set of sentinels this pool will subscribe to the
Sentinel notifications about master changes (+switch-master) and
re-establishes the pool to the new master when one is announced.

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

@@ -0,0 +1,78 @@
+package redis.clients.jedis;
+
+import org.apache.commons.pool.BasePoolableObjectFactory;
+
+/**
+ * PoolableObjectFactory custom impl.
+ */
+class JedisFactory extends BasePoolableObjectFactory {
+    private final String host;
+    private final int port;
+    private final int timeout;
+    private final String password;
+    private final int database;
+
+    public JedisFactory(final String host, final int port,
+            final int timeout, final String password, final int database) {
+        super();
+        this.host = host;
+        this.port = port;
+        this.timeout = timeout;
+        this.password = password;
+        this.database = database;
+    }
+
+    public Object makeObject() throws Exception {
+        final Jedis jedis = new Jedis(this.host, this.port, this.timeout);
+
+        jedis.connect();
+        if (null != this.password) {
+            jedis.auth(this.password);
+        }
+        if( database != 0 ) {
+            jedis.select(database);
+        }
+        
+        return jedis;
+    }
+    
+    @Override
+    public void activateObject(Object obj) throws Exception {
+		if (obj instanceof Jedis) {
+            final Jedis jedis = (Jedis)obj;
+            if (jedis.getDB() != database) {
+            	jedis.select(database);
+            }
+		}
+    }
+
+    public void destroyObject(final Object obj) throws Exception {
+        if (obj instanceof Jedis) {
+            final Jedis jedis = (Jedis) obj;
+            if (jedis.isConnected()) {
+                try {
+                    try {
+                        jedis.quit();
+                    } catch (Exception e) {
+                    }
+                    jedis.disconnect();
+                } catch (Exception e) {
+
+                }
+            }
+        }
+    }
+
+    public boolean validateObject(final Object obj) {
+        if (obj instanceof Jedis) {
+            final Jedis jedis = (Jedis) obj;
+            try {
+                return jedis.isConnected() && jedis.ping().equals("PONG");
+            } catch (final Exception e) {
+                return false;
+            }
+        } else {
+            return false;
+        }
+    }
+}