001/*
002 * Copyright 2009 Red Hat, Inc.
003 * Red Hat licenses this file to you under the Apache License, version
004 * 2.0 (the "License"); you may not use this file except in compliance
005 * with the License.  You may obtain a copy of the License at
006 *    http://www.apache.org/licenses/LICENSE-2.0
007 * Unless required by applicable law or agreed to in writing, software
008 * distributed under the License is distributed on an "AS IS" BASIS,
009 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
010 * implied.  See the License for the specific language governing
011 * permissions and limitations under the License.
012 */
013
014package org.hornetq.api.core.client.loadbalance;
015
016import org.hornetq.utils.Random;
017
018/**
019 * {@link RandomConnectionLoadBalancingPolicy#select(int)} chooses a the initial node randomly then subsequent requests return the same node
020 *
021 * @author <a href="mailto:tim.fox@jboss.com">Tim Fox</a>
022 * 
023 */
024public class RandomStickyConnectionLoadBalancingPolicy implements ConnectionLoadBalancingPolicy
025{
026   private final Random random = new Random();
027
028   private int pos = -1;
029
030   public int select(final int max)
031   {
032      if (pos == -1)
033      {
034         pos = random.getRandom().nextInt(max);
035      }
036      
037      return pos;
038   }
039}