| /* |
| * 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.oodt.cas.resource.scheduler; |
| |
| //JDK imports |
| import java.util.LinkedHashSet; |
| import java.util.Vector; |
| |
| //OODT imports |
| import org.apache.oodt.cas.resource.structs.exceptions.QueueManagerException; |
| |
| /** |
| * |
| * @author bfoster |
| * @version $Revision$ |
| * |
| * <p> |
| * The LRUs Queue to Node Mapping Manager |
| * </p> |
| */ |
| public class LRUQueueManager extends QueueManager { |
| |
| public LRUQueueManager(QueueManager queueManager) throws QueueManagerException { |
| for (String queue : queueManager.getQueues()) { |
| LinkedHashSet<String> nodes = new LinkedHashSet<String>(); |
| nodes.addAll(queueManager.getNodes(queue)); |
| this.queueToNodesMapping.put(queue, nodes); |
| } |
| } |
| |
| public synchronized void usedNode(String queueName, String nodeId) { |
| Vector<String> nodes = new Vector<String>(this.queueToNodesMapping.get(queueName)); |
| nodes.remove(nodeId); |
| nodes.add(nodeId); |
| LinkedHashSet<String> nodeSet = new LinkedHashSet<String>(); |
| nodeSet.addAll(nodes); |
| this.queueToNodesMapping.put(queueName, nodeSet); |
| } |
| |
| } |
| |