| // 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 com.cloud.hypervisor.kvm.resource; |
| |
| import java.io.IOException; |
| import java.io.StringReader; |
| |
| import javax.xml.parsers.DocumentBuilder; |
| import javax.xml.parsers.ParserConfigurationException; |
| |
| import org.apache.cloudstack.utils.security.ParserUtils; |
| import org.apache.log4j.Logger; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| import org.xml.sax.InputSource; |
| import org.xml.sax.SAXException; |
| |
| public class LibvirtStorageVolumeXMLParser { |
| private static final Logger s_logger = Logger.getLogger(LibvirtStorageVolumeXMLParser.class); |
| |
| public LibvirtStorageVolumeDef parseStorageVolumeXML(String volXML) { |
| DocumentBuilder builder; |
| try { |
| builder = ParserUtils.getSaferDocumentBuilderFactory().newDocumentBuilder(); |
| |
| InputSource is = new InputSource(); |
| is.setCharacterStream(new StringReader(volXML)); |
| Document doc = builder.parse(is); |
| |
| Element rootElement = doc.getDocumentElement(); |
| |
| String VolName = getTagValue("name", rootElement); |
| Element target = (Element)rootElement.getElementsByTagName("target").item(0); |
| String format = getAttrValue("type", "format", target); |
| Long capacity = Long.parseLong(getTagValue("capacity", rootElement)); |
| return new LibvirtStorageVolumeDef(VolName, capacity, LibvirtStorageVolumeDef.VolumeFormat.getFormat(format), null, null); |
| } catch (ParserConfigurationException e) { |
| s_logger.debug(e.toString()); |
| } catch (SAXException e) { |
| s_logger.debug(e.toString()); |
| } catch (IOException e) { |
| s_logger.debug(e.toString()); |
| } |
| return null; |
| } |
| |
| private static String getTagValue(String tag, Element eElement) { |
| NodeList nlList = eElement.getElementsByTagName(tag).item(0).getChildNodes(); |
| Node nValue = nlList.item(0); |
| |
| return nValue.getNodeValue(); |
| } |
| |
| private static String getAttrValue(String tag, String attr, Element eElement) { |
| NodeList tagNode = eElement.getElementsByTagName(tag); |
| if (tagNode.getLength() == 0) { |
| return null; |
| } |
| Element node = (Element)tagNode.item(0); |
| return node.getAttribute(attr); |
| } |
| } |