1 files changed, 97 insertions, 0 deletions
diff --git a/core/modules/qemu/runvirt-plugin-qemu/src/main/java/org/openslx/runvirt/plugin/qemu/configuration/TransformationGenericParallelDevices.java b/core/modules/qemu/runvirt-plugin-qemu/src/main/java/org/openslx/runvirt/plugin/qemu/configuration/TransformationGenericParallelDevices.java
new file mode 100644
index 00000000..08d43ef0
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+++ b/core/modules/qemu/runvirt-plugin-qemu/src/main/java/org/openslx/runvirt/plugin/qemu/configuration/TransformationGenericParallelDevices.java
@@ -0,0 +1,97 @@
+package org.openslx.runvirt.plugin.qemu.configuration;
+
+import java.util.ArrayList;
+
+import org.openslx.libvirt.domain.Domain;
+import org.openslx.libvirt.domain.device.Parallel;
+import org.openslx.libvirt.domain.device.Parallel.Type;
+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 parallel device transformation for Libvirt/QEMU virtualization configurations.
+ * 
+ * @author Manuel Bentele
+ * @version 1.0
+ */
+public class TransformationGenericParallelDevices extends TransformationGeneric<Domain, CommandLineArgs>
+{
+	/**
+	 * Name of the configuration transformation.
+	 */
+	private static final String NAME = "Parallel devices";
+
+	/**
+	 * Creates a new parallel device transformation for Libvirt/QEMU virtualization configurations.
+	 */
+	public TransformationGenericParallelDevices()
+	{
+		super( TransformationGenericParallelDevices.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 parallel device in a virtualization configuration selected by its {@code index}.
+	 * 
+	 * @param config virtualization configuration for the transformation.
+	 * @param fileName path to the parallel device file on the host system.
+	 * @param index number of the parallel device in the virtualization configuration that is
+	 *           selected.
+	 * @throws TransformationException transformation has failed.
+	 */
+	private void transformParallelDevice( Domain config, String fileName, int index ) throws TransformationException
+	{
+		final ArrayList<Parallel> devices = config.getParallelDevices();
+		final Parallel device = VirtualizationConfigurationQemuUtils.getArrayIndex( devices, index );
+
+		if ( device == null ) {
+			// check if device file name is specified
+			if ( fileName != null ) {
+				// parallel port device does not exist, so create new parallel port device
+				final Parallel newDevice = config.addParallelDevice();
+				newDevice.setType( Type.DEV );
+				newDevice.setSource( fileName );
+			}
+		} else {
+			if ( fileName == null || fileName.isEmpty() ) {
+				// remove device since device file is not specified
+				device.remove();
+			} else {
+				// change type and source of existing parallel 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 parallel device
+		this.transformParallelDevice( config, args.getVmDeviceParallel0(), 0 );
+
+		// remove all additional parallel devices
+		final ArrayList<Parallel> devices = config.getParallelDevices();
+		for ( int i = 1; i < devices.size(); i++ ) {
+			devices.get( i ).remove();
+		}
+	}
+}