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package org.openslx.virtualization.configuration.logic;
import org.openslx.virtualization.configuration.VirtualizationConfiguration;
import org.openslx.virtualization.configuration.VirtualizationConfiguration.EtherType;
import org.openslx.virtualization.configuration.VirtualizationConfigurationException;
import org.openslx.virtualization.configuration.data.ConfigurationDataDozModServerToStatelessClient;
import org.openslx.virtualization.configuration.transformation.TransformationException;
/**
* Transformation logic for virtualization configurations between a dozmod-server and a stateless
* client.
* <p>
* This transformation logic is applied while downloading an existing virtualization configuration
* from a dozmod-server to a stateless client.
*
* <pre>
* +------------------------------+ DozModServerToStatelessClient +------------------------------+
* | virtualization configuration | -------------------------------▶ | virtualization configuration |
* +---------------+--------------+ transformation logic +------------------+-----------+
* | dozmod-server | | stateless client |
* +---------------+ +------------------+
* </pre>
*
* @author Manuel Bentele
* @version 1.0
*/
public class ConfigurationLogicDozModServerToStatelessClient
extends ConfigurationLogic<ConfigurationDataDozModServerToStatelessClient>
{
/**
* Name of the transformation logic for virtualization configurations.
*/
private static final String CONFIGURATION_LOGIC_NAME = "Transformation of virtualization configuration during download from DozMod server to stateless client";
/**
* Default type for an ethernet interface in a virtualization configuration.
*/
private static final EtherType CONFIGURATION_DEFAULT_ETHERNET_TYPE = EtherType.NAT;
/**
* Creates a new transformation logic for virtualization configurations between a dozmod-server
* and a stateless client.
*/
public ConfigurationLogicDozModServerToStatelessClient()
{
super( ConfigurationLogicDozModServerToStatelessClient.CONFIGURATION_LOGIC_NAME );
}
/**
* Validates a virtualization configuration and input arguments for a transformation.
*
* @param config virtualization configuration for the validation.
* @param args input arguments for the validation.
* @throws TransformationException validation has failed.
*/
private void validateInputs( VirtualizationConfiguration config,
ConfigurationDataDozModServerToStatelessClient args )
throws TransformationException
{
if ( config == null || args == null ) {
throw new TransformationException( "Virtualization configuration or input arguments are missing!" );
} else if ( args.getDisplayName() == null || args.getDisplayName().isEmpty() ) {
throw new TransformationException( "Valid display name is not specified!" );
}
}
@Override
public void transform( VirtualizationConfiguration config,
ConfigurationDataDozModServerToStatelessClient args )
throws TransformationException
{
// check if input parameters for a transformation are valid
this.validateInputs( config, args );
// apply settings to run virtualized system in a stateless manner
try {
config.transformNonPersistent();
} catch ( VirtualizationConfigurationException e ) {
throw new TransformationException( e.getLocalizedMessage() );
}
// set display name of lecture
if ( !config.addDisplayName( args.getDisplayName() ) ) {
throw new TransformationException( "Can not set display name in virtualization configuration!" );
}
// append hard disk drive (with no referenced image as content)
if ( !config.addEmptyHddTemplate() ) {
throw new TransformationException( "Can not configure hard disk in virtualization configuration!" );
}
// append default NAT interface
if ( !config.addEthernet(
ConfigurationLogicDozModServerToStatelessClient.CONFIGURATION_DEFAULT_ETHERNET_TYPE ) ) {
throw new TransformationException( "Can not configure NAT interface in virtualization configuration!" );
}
// set the guest OS if specified
if ( args.getOsId() != null ) {
config.setOs( args.getOsId() );
}
// disable USB if necessary
if ( !args.hasUsbAccess() ) {
config.disableUsb();
}
}
}
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