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Plugin used to manage virtualization
/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.plugins.virt;
import java.util.Set;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.libvirt.LibvirtException;
import org.rhq.core.domain.configuration.Configuration;
import org.rhq.core.domain.configuration.PropertySimple;
import org.rhq.core.domain.measurement.AvailabilityType;
import org.rhq.core.domain.measurement.MeasurementDataNumeric;
import org.rhq.core.domain.measurement.MeasurementDataTrait;
import org.rhq.core.domain.measurement.MeasurementReport;
import org.rhq.core.domain.measurement.MeasurementScheduleRequest;
import org.rhq.core.pluginapi.configuration.ConfigurationFacet;
import org.rhq.core.pluginapi.configuration.ConfigurationUpdateReport;
import org.rhq.core.pluginapi.inventory.CreateChildResourceFacet;
import org.rhq.core.pluginapi.inventory.CreateResourceReport;
import org.rhq.core.pluginapi.inventory.InvalidPluginConfigurationException;
import org.rhq.core.pluginapi.inventory.ResourceComponent;
import org.rhq.core.pluginapi.inventory.ResourceContext;
import org.rhq.core.pluginapi.measurement.MeasurementFacet;
import org.rhq.plugins.virt.LibVirtConnection.HVInfo;
/**
* Component for managing both virtual hosts and guests though some features are guest only and only
* defined in the guest metadata.
*
* @author Greg Hinkle
*/
public class VirtualizationHostComponent implements ResourceComponent>, MeasurementFacet, ConfigurationFacet,
CreateChildResourceFacet {
private Log log = LogFactory.getLog(VirtualizationDomainComponent.class);
private String uri = "";
private LibVirtConnection virt;
private long cpuNanosLast;
private long cpuCheckedLast;
public void start(ResourceContext resourceContext) throws InvalidPluginConfigurationException, Exception {
uri = resourceContext.getPluginConfiguration().getSimpleValue("connectionURI", "");
virt = new LibVirtConnection(uri);
if (!virt.isConnected()) {
virt = null;
}
}
public void stop() {
try {
virt.close();
} catch (Exception e) {
log.error("Exception Stopping Libvirt", e);
}
}
public AvailabilityType getAvailability() {
/*try {
System.out.println("In get Availability " + virt.getConnectionURI());
} catch (Exception e) {
System.out.println("WOIERUOIWUROIEWUROWUROIEUROIEUOIR");
}*/
if (virt.isConnected()) {
try {
virt.getHVInfo();
return AvailabilityType.UP;
} catch (Exception e) {
return AvailabilityType.DOWN;
}
} else {
return AvailabilityType.DOWN;
}
}
public void getValues(MeasurementReport report, Set metrics) throws Exception {
if (virt.isConnected()) {
HVInfo hi = virt.getHVInfo();
for (MeasurementScheduleRequest request : metrics) {
if (request.getName().equals("cpus")) {
report.addData(new MeasurementDataTrait(request, "" + hi.nodeInfo.cpus));
} else if (request.getName().equals("memory")) {
report.addData(new MeasurementDataTrait(request, "" + hi.nodeInfo.memory));
} else if (request.getName().equals("memoryUsage")) {
report.addData(new MeasurementDataNumeric(request, virt.getMemoryPercentage()));
} else if (request.getName().equals("cpuUsage")) {
long checked = System.nanoTime();
long cpuNanos = virt.getCPUTime();
if (cpuCheckedLast != 0) {
long duration = checked - cpuCheckedLast;
long diff = cpuNanos - cpuNanosLast;
double percentage = ((double) diff) / ((double) duration);
report.addData(new MeasurementDataNumeric(request, percentage));
}
cpuCheckedLast = checked;
cpuNanosLast = cpuNanos;
} else if (request.getName().equals("cpuTime")) {
report.addData(new MeasurementDataNumeric(request, (double) virt.getCPUTime()));
}
}
}
}
public Configuration loadResourceConfiguration() throws LibvirtException {
Configuration config = new Configuration();
if (virt.isConnected()) {
HVInfo info = virt.getHVInfo();
config.put(new PropertySimple("hypervisorType", info.hvType));
config.put(new PropertySimple("hostName", info.hostname));
config.put(new PropertySimple("libvirtVersion", getLibvirtVersion(info.libvirtVersion)));
}
return config;
}
public String getLibvirtVersion(long version) {
long major, minor, micro, remainder;
major = version / 1000000;
remainder = version % 1000000;
minor = remainder / 1000;
micro = remainder % 1000;
return major + "." + minor + "." + micro;
}
public void updateResourceConfiguration(ConfigurationUpdateReport report) {
// This configuration can not be updated.
}
// TODO
public CreateResourceReport createResource(CreateResourceReport report) {
/*try {
System.out.println(virt.getConnectionURI());
} catch (Exception e) {
e.printStackTrace();
}*/
/*String xml = DomainConfigurationEditor.getXml(report.getResourceConfiguration());
log.info("Defining new domain");
log.debug("New virtualization domain xml:\n" + xml);
try {
this.virt.defineDomain(xml);
report.setStatus(CreateResourceStatus.SUCCESS);
} catch (LibvirtException e) {
log.error("Exception creating the domain", e);
report.setStatus(CreateResourceStatus.FAILURE);
}
*/
return report;
}
public LibVirtConnection getConnection() throws LibvirtException {
return virt;
}
}