| /** |
| * 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.pcs.util; |
| |
| //JDK imports |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.util.List; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| //OODT imports |
| import org.apache.oodt.cas.resource.system.XmlRpcResourceManagerClient; |
| |
| /** |
| * A set of utility methods that can be used by PCS that need to |
| * communicate with the Resource Manager. |
| * |
| * @author mattmann |
| * @version $Revision$ |
| * |
| */ |
| public class ResourceManagerUtils { |
| |
| /* our resource manager client */ |
| private XmlRpcResourceManagerClient client; |
| |
| /* our log stream */ |
| private static final Logger LOG = Logger.getLogger(ResourceManagerUtils.class |
| .getName()); |
| |
| private URL rmUrl; |
| |
| public ResourceManagerUtils(String urlStr) { |
| this(safeGetUrlFromString(urlStr)); |
| } |
| |
| public ResourceManagerUtils(URL url) { |
| this.client = new XmlRpcResourceManagerClient(url); |
| this.rmUrl = url; |
| |
| } |
| |
| public ResourceManagerUtils(XmlRpcResourceManagerClient client) { |
| this.client = client; |
| } |
| |
| /** |
| * @return the client |
| */ |
| public XmlRpcResourceManagerClient getClient() { |
| return client; |
| } |
| |
| /** |
| * @param client |
| * the client to set |
| */ |
| public void setClient(XmlRpcResourceManagerClient client) { |
| this.client = client; |
| if (this.client != null) { |
| this.rmUrl = this.client.getResMgrUrl(); |
| } |
| } |
| |
| public List safeGetResourceNodes() { |
| try { |
| return this.client.getNodes(); |
| } catch (Exception e) { |
| LOG.log(Level.WARNING, "Unable to obtain resource nodes " |
| + "while communicating with resource manager at: [" |
| + this.client.getResMgrUrl() + "]"); |
| return null; |
| } |
| } |
| |
| /** |
| * |
| * @return The {@link URL} for the Resource Manager that this |
| * ResourceManagerUtils communicates with. |
| */ |
| public URL getResmgrUrl() { |
| return this.rmUrl; |
| } |
| |
| private static URL safeGetUrlFromString(String urlStr) { |
| URL url = null; |
| |
| try { |
| url = new URL(urlStr); |
| } catch (MalformedURLException e) { |
| LOG.log(Level.SEVERE, "PCS: Unable to generate url from url string: [" |
| + urlStr + "]: Message: " + e.getMessage()); |
| } |
| |
| return url; |
| } |
| } |