1 files changed, 117 insertions, 0 deletions
diff --git a/core/modules/qemu/runvirt-plugin-qemu/src/main/java/org/openslx/runvirt/plugin/qemu/configuration/TransformationSpecificQemuSerialDevices.java b/core/modules/qemu/runvirt-plugin-qemu/src/main/java/org/openslx/runvirt/plugin/qemu/configuration/TransformationSpecificQemuSerialDevices.java
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+++ b/core/modules/qemu/runvirt-plugin-qemu/src/main/java/org/openslx/runvirt/plugin/qemu/configuration/TransformationSpecificQemuSerialDevices.java
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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();
+		}
+	}
+}