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package org.openslx.libvirt.domain.device;
import org.openslx.libvirt.xml.LibvirtXmlNode;
/**
* A hostdev device node in a Libvirt domain XML document for PCI, USB, ... passthrough.
*
* @author Manuel Bentele
* @version 1.0
*/
public class Hostdev extends Device
{
/**
* Creates an empty hostdev device.
*/
public Hostdev()
{
super();
}
/**
* Creates a hostdev device representing an existing Libvirt XML hostdev device element.
*
* @param xmlNode existing Libvirt XML hostdev device element.
*/
public Hostdev( LibvirtXmlNode xmlNode )
{
super( xmlNode );
}
/**
* Checks if hostdev device is managed.
*
* If {@link #isManaged()} returns <code>true</code> the hostdev device is detached from the
* host before being passed on to the guest and reattached to the host after the guest exits.
*
* @return state whether hostdev device is managed.
*/
public boolean isManaged()
{
return this.getXmlElementAttributeValueAsBool( "managed" );
}
/**
* Sets state whether hostdev device is managed.
*
* If the <code>managed</code> parameter is set to <code>true</code> the hostdev device is
* detached from the host before being passed on to the guest and reattached to the host after
* the guest exits.
*
* @param managed state whether hostdev device is managed or not.
*/
public void setManaged( boolean managed )
{
this.setXmlElementAttributeValueYesNo( "managed", managed );
}
/**
* Removes boot oder entry of the hostdev device.
*/
public void removeBootOrder()
{
this.removeXmlElement( "boot" );
}
/**
* Creates a non-existent hostdev device as Libvirt XML device element.
*
* @param hostdev hostdev device that is created.
* @param xmlNode Libvirt XML node of the Libvirt XML device that is created.
* @return created hostdev device instance.
*/
public static Hostdev createInstance( Hostdev hostdev, LibvirtXmlNode xmlNode )
{
Hostdev addedHostdev = null;
xmlNode.setXmlElementAttributeValue( "mode", "subsystem" );
if ( hostdev instanceof HostdevMdev ) {
xmlNode.setXmlElementAttributeValue( "type", Type.MDEV.toString() );
addedHostdev = HostdevMdev.createInstance( xmlNode );
} else if ( hostdev instanceof HostdevPci ) {
xmlNode.setXmlElementAttributeValue( "type", Type.PCI.toString() );
addedHostdev = HostdevPci.createInstance( xmlNode );
} else if ( hostdev instanceof HostdevUsb ) {
xmlNode.setXmlElementAttributeValue( "type", Type.USB.toString() );
addedHostdev = HostdevUsb.createInstance( xmlNode );
}
return addedHostdev;
}
/**
* Creates a hostdev device representing an existing Libvirt XML hostdev device element.
*
* @param xmlNode existing Libvirt XML hostdev device element.
* @return hostdev device instance.
*/
public static Hostdev newInstance( LibvirtXmlNode xmlNode )
{
Hostdev deviceHostdev = null;
Type type = Type.fromString( xmlNode.getXmlElementAttributeValue( "type" ) );
if ( type == null ) {
return null;
}
switch ( type ) {
case MDEV:
deviceHostdev = HostdevMdev.newInstance( xmlNode );
break;
case PCI:
deviceHostdev = HostdevPci.newInstance( xmlNode );
break;
case USB:
deviceHostdev = HostdevUsb.newInstance( xmlNode );
break;
}
return deviceHostdev;
}
/**
* Type of hostdev device subsystem passthrough.
*
* @author Manuel Bentele
* @version 1.0
*/
enum Type
{
// @formatter:off
MDEV( "mdev" ),
PCI ( "pci" ),
USB ( "usb" );
// @formatter:on
/**
* Name of the hostdev device type.
*/
private String type = null;
/**
* Creates hostdev device type.
*
* @param type valid name of the hostdev device type in a Libvirt domain XML document.
*/
Type( String type )
{
this.type = type;
}
@Override
public String toString()
{
return this.type;
}
/**
* Creates hostdev device type from its name with error check.
*
* @param type name of the hostdev device storage in a Libvirt domain XML document.
* @return valid hostdev device type.
*/
public static Type fromString( String type )
{
for ( Type t : Type.values() ) {
if ( t.type.equalsIgnoreCase( type ) ) {
return t;
}
}
return null;
}
}
}
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