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package org.openslx.runvirt.plugin.qemu.configuration;
import java.util.ArrayList;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import org.openslx.libvirt.domain.Domain;
import org.openslx.libvirt.domain.device.Serial.Type;
import org.openslx.libvirt.domain.device.Serial;
import org.openslx.runvirt.plugin.qemu.cmdln.CommandLineArgs;
import org.openslx.runvirt.plugin.qemu.virtualization.LibvirtHypervisorQemu;
import org.openslx.virtualization.configuration.VirtualizationConfigurationQemuUtils;
import org.openslx.virtualization.configuration.transformation.TransformationException;
import org.openslx.virtualization.configuration.transformation.TransformationSpecific;
/**
* Specific serial device transformation for Libvirt/QEMU virtualization configurations.
*
* @author Manuel Bentele
* @version 1.0
*/
public class TransformationSpecificQemuSerialDevices
extends TransformationSpecific<Domain, CommandLineArgs, LibvirtHypervisorQemu>
{
/**
* Name of the configuration transformation.
*/
private static final String NAME = "Serial devices";
/**
* Creates a new serial device transformation for Libvirt/QEMU virtualization configurations.
*
* @param hypervisor Libvirt/QEMU hypervisor.
*/
public TransformationSpecificQemuSerialDevices( LibvirtHypervisorQemu hypervisor )
{
super( TransformationSpecificQemuSerialDevices.NAME, hypervisor );
}
/**
* 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!" );
}
}
/**
* Returns all serial devices from a virtualization configuration that link to a host system's
* serial device.
*
* @param config virtualization configuration.
* @return all serial devices that link to a host system's serial device.
*/
private ArrayList<Serial> getSerialDevDevices( Domain config )
{
final ArrayList<Serial> devices = config.getSerialDevices();
final Predicate<Serial> byDeviceTypeDev = device -> device.getType() == Type.DEV;
return devices.stream().filter( byDeviceTypeDev ).collect( Collectors.toCollection( ArrayList::new ) );
}
/**
* Transforms a serial device in a virtualization configuration selected by its {@code index}.
*
* @param config virtualization configuration for the transformation.
* @param fileName path to the serial device file on the host system.
* @param index number of the serial device in the virtualization configuration that is selected.
* @throws TransformationException transformation has failed.
*/
private void transformSerialDevice( Domain config, String fileName, int index ) throws TransformationException
{
final ArrayList<Serial> devices = this.getSerialDevDevices( config );
final Serial device = VirtualizationConfigurationQemuUtils.getArrayIndex( devices, index );
if ( device == null ) {
// check if device file name is specified
if ( fileName != null && !fileName.isEmpty() ) {
// serial port device is not available, so create new serial port device
final Serial newDevice = config.addSerialDevice();
newDevice.setType( Type.DEV );
newDevice.setSource( fileName );
}
} else {
if ( fileName == null || fileName.isEmpty() ) {
// remove serial port device if device file name is not set
device.remove();
} else {
// set type and source of existing serial port device
device.setType( Type.DEV );
device.setSource( fileName );
}
}
}
@Override
public void transform( Domain config, CommandLineArgs args ) throws TransformationException
{
// validate configuration and input arguments
this.validateInputs( config, args );
// alter serial device
this.transformSerialDevice( config, args.getVmDeviceSerial0(), 0 );
// remove all additional serial devices
final ArrayList<Serial> devices = this.getSerialDevDevices( config );
for ( int i = 1; i < devices.size(); i++ ) {
devices.get( i ).remove();
}
}
}
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