    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
    014    package org.hornetq.api.core.client.loadbalance;
    015
    016    import 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     */
    024    public 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    }