/**
* Licensed to jclouds, Inc. (jclouds) under one or more
* contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. jclouds 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.jclouds.libvirt.compute.functions;
import java.io.IOException;
import java.io.StringReader;
import java.util.List;
import javax.inject.Singleton;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.jclouds.compute.domain.Hardware;
import org.jclouds.compute.domain.HardwareBuilder;
import org.jclouds.compute.domain.Processor;
import org.jclouds.compute.domain.Volume;
import org.jclouds.compute.domain.internal.VolumeImpl;
import org.libvirt.Domain;
import org.libvirt.LibvirtException;
import org.libvirt.StorageVol;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import com.google.common.base.Function;
import com.google.common.base.Throwables;
import com.google.common.collect.Lists;
import com.jamesmurty.utils.XMLBuilder;
/**
* @author Adrian Cole
*/
@Singleton
public class DomainToHardware implements Function<Domain, Hardware> {
@Override
public Hardware apply(Domain from) {
HardwareBuilder builder = new HardwareBuilder();
try {
builder.id(from.getUUIDString());
builder.providerId(from.getID() + "");
builder.name(from.getName());
List<Processor> processors = Lists.newArrayList();
for (int i = 0; i < from.getInfo().nrVirtCpu; i++) {
processors.add(new Processor(i + 1, 1));
}
builder.processors(processors);
builder.ram((int) from.getInfo().maxMem);
List<Volume> volumes = Lists.newArrayList();
XMLBuilder xmlBuilder = XMLBuilder.parse(new InputSource(new StringReader(from.getXMLDesc(0))));
Document doc = xmlBuilder.getDocument();
XPathExpression expr = XPathFactory.newInstance().newXPath().compile("//devices/disk[@device='disk']/source/@file");
NodeList nodes = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);
String diskFileName = nodes.item(0).getNodeValue();
for (int i = 0; i < nodes.getLength(); i++) {
StorageVol storageVol = from.getConnect().storageVolLookupByPath(diskFileName);
String id = storageVol.getKey();
float size = Long.valueOf(storageVol.getInfo().capacity).floatValue();
volumes.add(new VolumeImpl(id, Volume.Type.LOCAL, size, null, true, false));
}
builder.volumes((List<Volume>) volumes);
} catch (LibvirtException e) {
Throwables.propagate(e);
} catch (XPathExpressionException e) {
Throwables.propagate(e);
} catch (ParserConfigurationException e) {
Throwables.propagate(e);
} catch (SAXException e) {
Throwables.propagate(e);
} catch (IOException e) {
Throwables.propagate(e);
}
return builder.build();
}
}