Java tutorial
// 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.cloudstack.agent.lb.algorithm; import java.util.ArrayList; import java.util.Collections; import java.util.List; import java.util.Random; import org.apache.cloudstack.agent.lb.IndirectAgentLBAlgorithm; import org.apache.commons.collections.SetUtils; public class IndirectAgentLBShuffleAlgorithm implements IndirectAgentLBAlgorithm { @Override public List<String> sort(final List<String> msList, final List<Long> orderedHostList, final Long hostId) { final List<String> randomList = new ArrayList<>(msList); Collections.shuffle(randomList, new Random(System.currentTimeMillis())); return randomList; } @Override public String getName() { return "shuffle"; } @Override public boolean compare(List<String> msList, List<String> receivedMsList) { return SetUtils.isEqualSet(msList, receivedMsList); } }