org.apache.activemq.artemis.core.server.balancing.policies.RoundRobinPolicy Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.activemq.artemis.core.server.balancing.policies;
import org.apache.activemq.artemis.core.server.balancing.targets.Target;
import org.apache.activemq.artemis.utils.RandomUtil;
import java.util.List;
public class RoundRobinPolicy extends AbstractPolicy {
public static final String NAME = "ROUND_ROBIN";
private int pos = RandomUtil.randomInterval(0, Integer.MAX_VALUE);
public RoundRobinPolicy() {
super(NAME);
}
protected RoundRobinPolicy(String name) {
super(name);
}
@Override
public Target selectTarget(List targets, String key) {
if (targets.size() > 0) {
pos = pos % targets.size();
return targets.get(pos++);
}
return null;
}
}