diff options
Diffstat (limited to 'core/modules/qemu/runvirt-plugin-qemu/src/main/java/org/openslx/runvirt/plugin/qemu/configuration/TransformationGenericDiskCdromDevices.java')
-rw-r--r-- | core/modules/qemu/runvirt-plugin-qemu/src/main/java/org/openslx/runvirt/plugin/qemu/configuration/TransformationGenericDiskCdromDevices.java | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/core/modules/qemu/runvirt-plugin-qemu/src/main/java/org/openslx/runvirt/plugin/qemu/configuration/TransformationGenericDiskCdromDevices.java b/core/modules/qemu/runvirt-plugin-qemu/src/main/java/org/openslx/runvirt/plugin/qemu/configuration/TransformationGenericDiskCdromDevices.java new file mode 100644 index 00000000..643c40ed --- /dev/null +++ b/core/modules/qemu/runvirt-plugin-qemu/src/main/java/org/openslx/runvirt/plugin/qemu/configuration/TransformationGenericDiskCdromDevices.java @@ -0,0 +1,110 @@ +package org.openslx.runvirt.plugin.qemu.configuration; + +import java.util.ArrayList; + +import org.openslx.libvirt.domain.Domain; +import org.openslx.libvirt.domain.device.Disk.BusType; +import org.openslx.libvirt.domain.device.Disk.StorageType; +import org.openslx.libvirt.domain.device.DiskCdrom; +import org.openslx.runvirt.plugin.qemu.cmdln.CommandLineArgs; +import org.openslx.virtualization.configuration.VirtualizationConfigurationQemuUtils; +import org.openslx.virtualization.configuration.transformation.TransformationException; +import org.openslx.virtualization.configuration.transformation.TransformationGeneric; + +/** + * Generic CDROM drive transformation for Libvirt/QEMU virtualization configurations. + * + * @author Manuel Bentele + * @version 1.0 + */ +public class TransformationGenericDiskCdromDevices extends TransformationGeneric<Domain, CommandLineArgs> +{ + /** + * Name of the configuration transformation. + */ + private static final String NAME = "Disk CDROM devices"; + + /** + * Creates a new generic CDROM drive transformation for Libvirt/QEMU virtualization + * configurations. + */ + public TransformationGenericDiskCdromDevices() + { + super( TransformationGenericDiskCdromDevices.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 CDROM drive in a virtualization configuration selected by its {@code index}. + * + * @param config virtualization configuration for the transformation. + * @param fileName name of the image file for the CDROM drive. + * @param index number of the CDROM drive in the virtualization configuration that is selected. + * @throws TransformationException transformation has failed. + */ + private void transformDiskCdromDevice( Domain config, String fileName, int index ) throws TransformationException + { + final ArrayList<DiskCdrom> devices = config.getDiskCdromDevices(); + final DiskCdrom disk = VirtualizationConfigurationQemuUtils.getArrayIndex( devices, index ); + + if ( disk == null ) { + if ( fileName != null ) { + // CDROM drive does not exist, so create new CDROM drive + final DiskCdrom newDisk = config.addDiskCdromDevice(); + newDisk.setBusType( BusType.SATA ); + String targetDevName = VirtualizationConfigurationQemuUtils.createAlphabeticalDeviceName( "sd", index ); + newDisk.setTargetDevice( targetDevName ); + + if ( fileName.isEmpty() ) { + // remove storage source if empty string is specified to emulate an empty CDROM drive + newDisk.removeStorage(); + } else { + // set disk image file as storage source of the disk CDROM drive + newDisk.setStorage( StorageType.FILE, fileName ); + } + } + } else { + // CDROM drive exists, so update existing CDROM drive + if ( fileName == null ) { + // remove disk storage device if disk image file name is not set + disk.remove(); + } else if ( fileName.isEmpty() ) { + // remove storage source if empty string is specified to emulate an empty CDROM drive + disk.removeStorage(); + } else { + // set disk image file as storage source of the disk CDROM drive + disk.setStorage( StorageType.FILE, fileName ); + } + } + } + + @Override + public void transform( Domain config, CommandLineArgs args ) throws TransformationException + { + // validate configuration and input arguments + this.validateInputs( config, args ); + + // alter CDROM drives + this.transformDiskCdromDevice( config, args.getVmDiskFileNameCdrom0(), 0 ); + this.transformDiskCdromDevice( config, args.getVmDiskFileNameCdrom1(), 1 ); + + // remove all additional disk CDROM devices + final ArrayList<DiskCdrom> devices = config.getDiskCdromDevices(); + for ( int i = 2; i < devices.size(); i++ ) { + devices.get( i ).remove(); + } + } +} |