1 files changed, 178 insertions, 0 deletions
diff --git a/src/main/java/org/openslx/libvirt/domain/device/Shmem.java b/src/main/java/org/openslx/libvirt/domain/device/Shmem.java
new file mode 100644
index 0000000..3c48c95
--- /dev/null
+++ b/src/main/java/org/openslx/libvirt/domain/device/Shmem.java
@@ -0,0 +1,178 @@
+package org.openslx.libvirt.domain.device;
+
+import java.math.BigInteger;
+
+import org.openslx.libvirt.domain.DomainUtils;
+import org.openslx.libvirt.xml.LibvirtXmlNode;
+
+/**
+ * A shared memory device node in a Libvirt domain XML document.
+ * 
+ * @author Manuel Bentele
+ * @version 1.0
+ */
+public class Shmem extends Device
+{
+	/**
+	 * Creates an empty sound device.
+	 */
+	public Shmem()
+	{
+		super();
+	}
+
+	/**
+	 * Creates a shared memory device representing an existing Libvirt XML shared memory device
+	 * element.
+	 * 
+	 * @param xmlNode existing Libvirt XML shared memory device element.
+	 */
+	public Shmem( LibvirtXmlNode xmlNode )
+	{
+		super( xmlNode );
+	}
+
+	/**
+	 * Returns the model of the shared memory device.
+	 * 
+	 * @return model of the shared memory device.
+	 */
+	public Model getModel()
+	{
+		String model = this.getXmlElementAttributeValue( "model", "type" );
+		return Model.fromString( model );
+	}
+
+	/**
+	 * Sets the model for the shared memory device.
+	 * 
+	 * @param model model for the shared memory device.
+	 */
+	public void setModel( Model model )
+	{
+		this.setXmlElementAttributeValue( "model", "type", model.toString() );
+	}
+
+	/**
+	 * Returns the name of the shared memory device.
+	 * 
+	 * @return name of the shared memory device.
+	 */
+	public String getName()
+	{
+		return this.getXmlElementAttributeValue( "name" );
+	}
+
+	/**
+	 * Sets the name for the shared memory device.
+	 * 
+	 * @param name name for the shared memory device.
+	 */
+	public void setName( String name )
+	{
+		this.setXmlElementAttributeValue( "name", name );
+	}
+
+	/**
+	 * Returns the memory size of the shared memory device.
+	 * 
+	 * @return memory size of the shared memory device in bytes.
+	 */
+	public BigInteger getSize()
+	{
+		final String unit = this.getXmlElementAttributeValue( "size", "unit" );
+		final String size = this.getXmlElementValue( "size" );
+
+		return DomainUtils.decodeMemory( size, unit );
+	}
+
+	/**
+	 * Sets the memory size for the shared memory device.
+	 * 
+	 * @param size memory size for the shared memory device in bytes.
+	 */
+	public void setSize( BigInteger memory )
+	{
+		final String unit = "M";
+		final String size = DomainUtils.encodeMemory( memory, unit );
+
+		this.setXmlElementAttributeValue( "size", "unit", unit );
+		this.setXmlElementValue( "size", size );
+	}
+
+	/**
+	 * Creates a non-existent shared memory device as Libvirt XML device element.
+	 * 
+	 * @param xmlNode Libvirt XML node of the Libvirt XML device that is created.
+	 * @return created shared memory device instance.
+	 */
+	public static Shmem createInstance( LibvirtXmlNode xmlNode )
+	{
+		return Shmem.newInstance( xmlNode );
+	}
+
+	/**
+	 * Creates a shared memory device representing an existing Libvirt XML shared memory device
+	 * element.
+	 * 
+	 * @param xmlNode existing Libvirt XML shared memory device element.
+	 * @return shared memory device instance.
+	 */
+	public static Shmem newInstance( LibvirtXmlNode xmlNode )
+	{
+		return new Shmem( xmlNode );
+	}
+
+	/**
+	 * Model of shared memory device.
+	 * 
+	 * @author Manuel Bentele
+	 * @version 1.0
+	 */
+	public enum Model
+	{
+		// @formatter:off
+		IVSHMEM         ( "ivshmem" ),
+		IVSHMEM_PLAIN   ( "ivshmem-plain" ),
+		IVSHMEM_DOORBELL( "ivshmem-doorbell" );
+		// @formatter:on
+
+		/**
+		 * Name of the shared memory device model.
+		 */
+		private String model;
+
+		/**
+		 * Creates shared memory device model.
+		 * 
+		 * @param type valid name of the shared memory device model in a Libvirt domain XML document.
+		 */
+		Model( String model )
+		{
+			this.model = model;
+		}
+
+		@Override
+		public String toString()
+		{
+			return this.model;
+		}
+
+		/**
+		 * Creates shared memory device model from its name with error check.
+		 * 
+		 * @param model name of the shared memory device model in a Libvirt domain XML document.
+		 * @return valid shared memory device model.
+		 */
+		public static Model fromString( String model )
+		{
+			for ( Model m : Model.values() ) {
+				if ( m.model.equalsIgnoreCase( model ) ) {
+					return m;
+				}
+			}
+
+			return null;
+		}
+	}
+}