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package org.openslx.runvirt.plugin.qemu.configuration;
import java.util.ArrayList;
import org.openslx.libvirt.domain.Domain;
import org.openslx.libvirt.domain.device.Interface;
import org.openslx.libvirt.domain.device.InterfaceBridge;
import org.openslx.libvirt.domain.device.Interface.Model;
import org.openslx.libvirt.domain.device.Interface.Type;
import org.openslx.runvirt.plugin.qemu.cmdln.CommandLineArgs;
import org.openslx.virtualization.configuration.VirtualizationConfigurationQemu;
import org.openslx.virtualization.configuration.VirtualizationConfigurationQemuUtils;
import org.openslx.virtualization.configuration.transformation.TransformationException;
import org.openslx.virtualization.configuration.transformation.TransformationGeneric;
/**
* Generic network interface transformation for Libvirt/QEMU virtualization configurations.
*
* @author Manuel Bentele
* @version 1.0
*/
public class TransformationGenericInterfaceDevices extends TransformationGeneric<Domain, CommandLineArgs>
{
/**
* Name of the configuration transformation.
*/
private static final String NAME = "Network interface devices";
/**
* Creates a new network interface transformation for Libvirt/QEMU virtualization configurations.
*/
public TransformationGenericInterfaceDevices()
{
super( TransformationGenericInterfaceDevices.NAME );
}
/**
* Validates a virtualization configuration and input arguments for this transformation.
*
* @param config virtualization configuration for the validation.
* @param args input arguments for the validation.
* @throws TransformationException validation has failed.
*/
private void validateInputs( Domain config, CommandLineArgs args ) throws TransformationException
{
if ( config == null || args == null ) {
throw new TransformationException( "Virtualization configuration or input arguments are missing!" );
}
}
/**
* Transforms a network interface in a virtualization configuration selected by its
* {@code index}.
*
* @param config virtualization configuration for the transformation.
* @param macAddress MAC address for the network interface.
* @param index number of the network interface in the virtualization configuration that is
* selected.
* @throws TransformationException transformation has failed.
*/
private void transformInterfaceDevice( Domain config, String macAddress, int index ) throws TransformationException
{
final ArrayList<Interface> devices = config.getInterfaceDevices();
final Interface device = VirtualizationConfigurationQemuUtils.getArrayIndex( devices, index );
if ( device == null ) {
if ( macAddress != null && !macAddress.isEmpty() ) {
// create network interface if it does not exists
final InterfaceBridge newDevice = config.addInterfaceBridgeDevice();
newDevice.setType( Type.BRIDGE );
newDevice.setModel( Model.VIRTIO );
newDevice.setMacAddress( macAddress );
newDevice.setSource( VirtualizationConfigurationQemu.NETWORK_BRIDGE_NAT_DEFAULT );
}
} else {
if ( macAddress == null || macAddress.isEmpty() ) {
// remove network interface device if MAC address is not set
device.remove();
} else {
// set MAC address of network interface device if network interface device is available
device.setMacAddress( macAddress );
}
}
}
@Override
public void transform( Domain config, CommandLineArgs args ) throws TransformationException
{
// validate configuration and input arguments
this.validateInputs( config, args );
// alter network interface
this.transformInterfaceDevice( config, args.getVmMacAddress0(), 0 );
// remove all additional disk storage devices
final ArrayList<Interface> devices = config.getInterfaceDevices();
for ( int i = 1; i < devices.size(); i++ ) {
devices.get( i ).remove();
}
}
}
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