1 files changed, 261 insertions, 0 deletions
diff --git a/core/modules/qemu/runvirt-plugin-qemu/src/main/java/org/openslx/runvirt/plugin/qemu/configuration/TransformationSpecificQemuArchitecture.java b/core/modules/qemu/runvirt-plugin-qemu/src/main/java/org/openslx/runvirt/plugin/qemu/configuration/TransformationSpecificQemuArchitecture.java
new file mode 100644
index 00000000..a51c829d
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+++ b/core/modules/qemu/runvirt-plugin-qemu/src/main/java/org/openslx/runvirt/plugin/qemu/configuration/TransformationSpecificQemuArchitecture.java
@@ -0,0 +1,261 @@
+package org.openslx.runvirt.plugin.qemu.configuration;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.openslx.libvirt.capabilities.Capabilities;
+import org.openslx.libvirt.capabilities.guest.Guest;
+import org.openslx.libvirt.capabilities.guest.Machine;
+import org.openslx.libvirt.domain.Domain;
+import org.openslx.libvirt.domain.Domain.OsType;
+import org.openslx.libvirt.domain.Domain.Type;
+import org.openslx.runvirt.plugin.qemu.cmdln.CommandLineArgs;
+import org.openslx.runvirt.plugin.qemu.virtualization.LibvirtHypervisorQemu;
+import org.openslx.runvirt.virtualization.LibvirtHypervisorException;
+import org.openslx.virtualization.configuration.transformation.TransformationException;
+import org.openslx.virtualization.configuration.transformation.TransformationSpecific;
+
+/**
+ * Specific architecture transformation for Libvirt/QEMU virtualization configurations.
+ * 
+ * @author Manuel Bentele
+ * @version 1.0
+ */
+public class TransformationSpecificQemuArchitecture
+		extends TransformationSpecific<Domain, CommandLineArgs, LibvirtHypervisorQemu>
+{
+	/**
+	 * Name of the configuration transformation.
+	 */
+	private static final String NAME = "QEMU Architecture [CPU architecture, machine type, ...]";
+
+	/**
+	 * Creates a new architecture transformation for Libvirt/QEMU virtualization configurations.
+	 * 
+	 * @param hypervisor Libvirt/QEMU hypervisor.
+	 */
+	public TransformationSpecificQemuArchitecture( LibvirtHypervisorQemu virtualizer )
+	{
+		super( TransformationSpecificQemuArchitecture.NAME, virtualizer );
+	}
+
+	/**
+	 * 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 ) {
+			throw new TransformationException( "Virtualization configuration is missing!" );
+		}
+	}
+
+	/**
+	 * Queries and returns the capabilities of the Libvirt/QEMU hypervisor.
+	 * 
+	 * @return capabilities of the Libvirt/QEMU hypervisor.
+	 * @throws TransformationException failed to query and return the capabilities of the
+	 *            Libvirt/QEMU hypervisor.
+	 */
+	protected Capabilities getCapabilities() throws TransformationException
+	{
+		final Capabilities capabilities;
+
+		try {
+			capabilities = this.getVirtualizer().getCapabilites();
+		} catch ( LibvirtHypervisorException e ) {
+			final String errorMsg = new String(
+					"Failed to retrieve host capabilities from QEMU virtualizer: " + e.getLocalizedMessage() );
+			throw new TransformationException( errorMsg );
+		}
+
+		return capabilities;
+	}
+
+	/**
+	 * Returns a guest capability of the hypervisor's host system based on a given target
+	 * architecture name.
+	 * 
+	 * @param architectureName target architecture of the guest that is returned
+	 * @return guest capability of the hypervisor's host system with target architecture name.
+	 * @throws TransformationException failed to return guest capability of the hypervisor's host.
+	 */
+	private Guest getTargetGuestFromArchName( String architectureName ) throws TransformationException
+	{
+		final List<Guest> guests = this.getCapabilities().getGuests();
+		Guest targetGuest = null;
+
+		if ( architectureName == null ) {
+			return targetGuest;
+		}
+
+		for ( Guest guest : guests ) {
+			final String guestArchitectureName = guest.getArchName();
+			if ( architectureName.equals( guestArchitectureName ) ) {
+				targetGuest = guest;
+				break;
+			}
+		}
+
+		return targetGuest;
+	}
+
+	/**
+	 * Returns the target machine description of a host system's guest capability based on a given
+	 * target machine name.
+	 * 
+	 * @param guest guest capability of a host system.
+	 * @param machineName name of the machine description.
+	 * @return target machine description of a host system's guest capability.
+	 * @throws TransformationException failed to return the target machine description of a host
+	 *            system's guest capabilities.
+	 */
+	private Machine getTargetMachineFromGuest( Guest guest, String machineName ) throws TransformationException
+	{
+		final List<Machine> machines = guest.getArchMachines();
+		Machine targetMachine = null;
+
+		if ( machineName == null ) {
+			return targetMachine;
+		}
+
+		for ( Machine machine : machines ) {
+			if ( machineName.equals( machine.getName() ) ) {
+				targetMachine = machine;
+				break;
+			}
+		}
+
+		return targetMachine;
+	}
+
+	/**
+	 * Returns the canonical names of a target machine description of a host system's guest
+	 * capability.
+	 * 
+	 * @param guest guest capability of a host system.
+	 * @return canonical names of a target machine description of a host system's guest capability.
+	 * @throws TransformationException failed to return the canonical names of a target machine
+	 *            description of a host system's guest capability
+	 */
+	private List<String> getCanonicalNamesFromTargetMachines( Guest guest ) throws TransformationException
+	{
+		final List<Machine> machines = guest.getArchMachines();
+		final List<String> canonicalNames = new ArrayList<String>();
+
+		for ( Machine machine : machines ) {
+			final String canonicalName = machine.getCanonicalMachine();
+			if ( canonicalName != null ) {
+				canonicalNames.add( canonicalName );
+			}
+		}
+
+		return canonicalNames;
+	}
+
+	@Override
+	public void transform( Domain config, CommandLineArgs args ) throws TransformationException
+	{
+		// validate configuration and input arguments
+		this.validateInputs( config, args );
+
+		// get source architecture, machine- and OS type
+		final String sourceArchitectureName = config.getOsArch();
+		final String sourceMachine = config.getOsMachine();
+		final OsType sourceOsType = config.getOsType();
+		final Type sourceDomainType = config.getType();
+
+		// check if source architecture is supported by one of the hypervisor's guests
+		Guest targetGuest = null;
+		if ( sourceArchitectureName == null ) {
+			final String errorMsg = new String( "Source architecture is not specified!" );
+			throw new TransformationException( errorMsg );
+		} else {
+			targetGuest = this.getTargetGuestFromArchName( sourceArchitectureName );
+			if ( targetGuest == null ) {
+				final String errorMsg = new String( "Source architecture is not supported by the virtualizer!" );
+				throw new TransformationException( errorMsg );
+			}
+		}
+
+		// check if source machine is supported by the hypervisor
+		Machine targetMachine = null;
+		if ( sourceMachine == null ) {
+			final String errorMsg = new String( "Source machine type is not specified!" );
+			throw new TransformationException( errorMsg );
+		} else {
+			// get all possible machine type for supported source architecture
+			targetMachine = this.getTargetMachineFromGuest( targetGuest, sourceMachine );
+
+			if ( targetMachine == null ) {
+				// source machine is not directly supported by the hypervisor
+				// check if up- or downgraded version of the chipset is supported by the hypervisor
+				List<String> targetMachineCanonicalNames = this.getCanonicalNamesFromTargetMachines( targetGuest );
+
+				// retrieve overwrite chipset name from canonical machine names
+				String sourceMachineOverwrite = null;
+				for ( String targetMachineCanonicalName : targetMachineCanonicalNames ) {
+					if ( sourceMachine.contains( targetMachineCanonicalName ) ) {
+						sourceMachineOverwrite = targetMachineCanonicalName;
+						break;
+					}
+				}
+
+				// if overwrite available, patch the machine type
+				if ( sourceMachineOverwrite != null ) {
+					config.setOsMachine( sourceMachineOverwrite );
+				} else {
+					final String errorMsg = new String( "Source machine type is not supported by the virtualizer!" );
+					throw new TransformationException( errorMsg );
+				}
+			}
+		}
+
+		// check if source OS type is supported by the hypervisor's architecture
+		if ( sourceOsType == null ) {
+			final String errorMsg = new String( "OS type is not specified!" );
+			throw new TransformationException( errorMsg );
+		} else {
+			if ( !sourceOsType.toString().equals( targetGuest.getOsType().toString() ) ) {
+				final String errorMsg = new String( "OS type is not supported by the virtualizer!" );
+				throw new TransformationException( errorMsg );
+			}
+		}
+
+		// check if source domain type is supported by the hypervisor's architecture
+		Type targetDomainType = null;
+		if ( sourceDomainType == null ) {
+			final String errorMsg = new String( "Source domain type is not specified!" );
+			throw new TransformationException( errorMsg );
+		} else {
+			final List<org.openslx.libvirt.capabilities.guest.Domain> targetDomains = targetGuest.getArchDomains();
+
+			// retrieve supported domain type
+			for ( org.openslx.libvirt.capabilities.guest.Domain domain : targetDomains ) {
+				final Type domainType = domain.getType();
+				if ( domainType == sourceDomainType ) {
+					targetDomainType = domainType;
+					break;
+				}
+			}
+
+			// check supported domain type
+			if ( targetDomainType == null ) {
+				final String errorMsg = new String( "Source domain type is not supported by the virtualizer!" );
+				throw new TransformationException( errorMsg );
+			}
+		}
+
+		// patch path of QEMU emulator binary
+		final String archEmulator = targetGuest.getArchEmulator();
+		if ( archEmulator == null ) {
+			final String errorMsg = new String( "Emulation of source architecture is not supported by the virtualizer!" );
+			throw new TransformationException( errorMsg );
+		} else {
+			config.setDevicesEmulator( targetGuest.getArchEmulator() );
+		}
+	}
+}