1 files changed, 102 insertions, 0 deletions
diff --git a/core/modules/qemu/runvirt-plugin-qemu/src/main/java/org/openslx/runvirt/plugin/qemu/configuration/TransformationGenericDiskStorageDevices.java b/core/modules/qemu/runvirt-plugin-qemu/src/main/java/org/openslx/runvirt/plugin/qemu/configuration/TransformationGenericDiskStorageDevices.java
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+++ b/core/modules/qemu/runvirt-plugin-qemu/src/main/java/org/openslx/runvirt/plugin/qemu/configuration/TransformationGenericDiskStorageDevices.java
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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.Disk.BusType;
+import org.openslx.libvirt.domain.device.Disk.StorageType;
+import org.openslx.libvirt.domain.device.DiskFloppy;
+import org.openslx.libvirt.domain.device.DiskStorage;
+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 storage device (HDD, SSD, ...) transformation for Libvirt/QEMU virtualization
+ * configurations.
+ * 
+ * @author Manuel Bentele
+ * @version 1.0
+ */
+public class TransformationGenericDiskStorageDevices extends TransformationGeneric<Domain, CommandLineArgs>
+{
+	/**
+	 * Name of the configuration transformation.
+	 */
+	private static final String NAME = "Disk storage devices [HDD, SSD, ...]";
+
+	/**
+	 * Creates a new storage device (HDD, SSD, ...) transformation for Libvirt/QEMU virtualization
+	 * configurations.
+	 */
+	public TransformationGenericDiskStorageDevices()
+	{
+		super( TransformationGenericDiskStorageDevices.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 storage device 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 storage device.
+	 * @param index number of the storage device in the virtualization configuration that is
+	 *           selected.
+	 * @throws TransformationException transformation has failed.
+	 */
+	private void transformDiskStorageDevice( Domain config, String fileName, int index ) throws TransformationException
+	{
+		final ArrayList<DiskStorage> devices = config.getDiskStorageDevices();
+		final DiskStorage disk = VirtualizationConfigurationQemuUtils.getArrayIndex( devices, index );
+
+		if ( disk == null ) {
+			if ( fileName != null && !fileName.isEmpty() ) {
+				// storage device does not exist, so create new storage device
+				final DiskFloppy newDisk = config.addDiskFloppyDevice();
+				newDisk.setBusType( BusType.VIRTIO );
+				String targetDevName = VirtualizationConfigurationQemuUtils.createAlphabeticalDeviceName( "vd", index );
+				newDisk.setTargetDevice( targetDevName );
+				newDisk.setStorage( StorageType.FILE, fileName );
+			}
+		} else {
+			// storage device exists, so update existing storage device
+			if ( fileName == null || fileName.isEmpty() ) {
+				// remove disk storage device if disk image file name is not set
+				disk.remove();
+			} else {
+				// set image file of disk storage if disk storage device is available
+				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 storage device
+		this.transformDiskStorageDevice( config, args.getVmDiskFileNameHDD0(), 0 );
+
+		// remove all additional disk storage devices
+		final ArrayList<DiskStorage> devices = config.getDiskStorageDevices();
+		for ( int i = 1; i < devices.size(); i++ ) {
+			devices.get( i ).remove();
+		}
+	}
+}