1 files changed, 158 insertions, 0 deletions
diff --git a/src/main/java/org/openslx/libvirt/libosinfo/LibOsInfo.java b/src/main/java/org/openslx/libvirt/libosinfo/LibOsInfo.java
new file mode 100644
index 0000000..f506d74
--- /dev/null
+++ b/src/main/java/org/openslx/libvirt/libosinfo/LibOsInfo.java
@@ -0,0 +1,158 @@
+package org.openslx.libvirt.libosinfo;
+
+import java.io.File;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.function.Predicate;
+
+import org.openslx.libvirt.libosinfo.os.Os;
+import org.openslx.libvirt.xml.LibvirtXmlDocument;
+import org.openslx.libvirt.xml.LibvirtXmlDocumentException;
+import org.openslx.libvirt.xml.LibvirtXmlNode;
+import org.openslx.libvirt.xml.LibvirtXmlResources;
+import org.openslx.libvirt.xml.LibvirtXmlSerializationException;
+import org.openslx.libvirt.xml.LibvirtXmlValidationException;
+import org.openslx.virtualization.Version;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.xml.sax.InputSource;
+
+/**
+ * Implementation of a libosinfo XML document.
+ * 
+ * The libosinfo XML document is used to describe existing operating systems, devices and their
+ * configuration possibilities.
+ * 
+ * @author Manuel Bentele
+ * @version 1.0
+ */
+public class LibOsInfo extends LibvirtXmlDocument
+{
+	/**
+	 * Creates a libosinfo XML document from a {@link String} providing libosinfo XML content.
+	 * 
+	 * @param xml {@link String} with libosinfo XML content.
+	 * 
+	 * @throws LibvirtXmlDocumentException creation of XML context failed.
+	 * @throws LibvirtXmlSerializationException serialization of the libosinfo XML content failed.
+	 * @throws LibvirtXmlValidationException XML content is not a valid libosinfo XML document.
+	 */
+	public LibOsInfo( String xml )
+			throws LibvirtXmlDocumentException, LibvirtXmlSerializationException, LibvirtXmlValidationException
+	{
+		super( xml, LibvirtXmlResources.getLibOsInfoRng( "osinfo.rng" ) );
+	}
+
+	/**
+	 * Creates a libosinfo XML document from a {@link File} containing libosinfo XML content.
+	 * 
+	 * @param xml existing {@link File} containing libosinfo XML content.
+	 * 
+	 * @throws LibvirtXmlDocumentException creation of XML context failed.
+	 * @throws LibvirtXmlSerializationException serialization of the libosinfo XML content failed.
+	 * @throws LibvirtXmlValidationException XML content is not a valid libosinfo XML document.
+	 */
+	public LibOsInfo( File xml )
+			throws LibvirtXmlDocumentException, LibvirtXmlSerializationException, LibvirtXmlValidationException
+	{
+		super( xml, LibvirtXmlResources.getLibOsInfoRng( "osinfo.rng" ) );
+	}
+
+	/**
+	 * Creates a libosinfo XML document from an {@link InputStream} providing libosinfo XML content.
+	 * 
+	 * @param xml {@link InputStream} providing libosinfo XML content.
+	 * 
+	 * @throws LibvirtXmlDocumentException creation of XML context failed.
+	 * @throws LibvirtXmlSerializationException serialization of the libosinfo XML content failed.
+	 * @throws LibvirtXmlValidationException XML content is not a valid libosinfo XML document.
+	 */
+	public LibOsInfo( InputStream xml )
+			throws LibvirtXmlDocumentException, LibvirtXmlSerializationException, LibvirtXmlValidationException
+	{
+		super( xml, LibvirtXmlResources.getLibOsInfoRng( "osinfo.rng" ) );
+	}
+
+	/**
+	 * Creates libosinfo XML document from {@link InputSource} providing libosinfo XML content.
+	 * 
+	 * @param xml {@link InputSource} providing libosinfo XML content.
+	 * 
+	 * @throws LibvirtXmlDocumentException creation of XML context failed.
+	 * @throws LibvirtXmlSerializationException serialization of the libosinfo XML content failed.
+	 * @throws LibvirtXmlValidationException XML content is not a valid libosinfo XML document.
+	 */
+	public LibOsInfo( InputSource xml )
+			throws LibvirtXmlDocumentException, LibvirtXmlSerializationException, LibvirtXmlValidationException
+	{
+		super( xml, LibvirtXmlResources.getLibOsInfoRng( "osinfo.rng" ) );
+	}
+
+	/**
+	 * Returns the version of the libosinfo database.
+	 * 
+	 * @return version of the libosinfo database.
+	 */
+	public Version getVersion()
+	{
+		final String version = this.getRootXmlNode().getXmlElementAttributeValue( "version" );
+		return Version.valueOf( version );
+	}
+
+	/**
+	 * Returns a list of all defined operating systems.
+	 * 
+	 * @return list of all defined operating systems.
+	 */
+	public ArrayList<Os> getOses()
+	{
+		final ArrayList<Os> oses = new ArrayList<Os>();
+		final NodeList osNodes = this.getRootXmlNode().getXmlNodes( "os" );
+
+		if ( osNodes != null ) {
+			for ( int i = 0; i < osNodes.getLength(); i++ ) {
+				final Node childNode = osNodes.item( i );
+				if ( childNode.getNodeType() == Node.ELEMENT_NODE ) {
+					final LibvirtXmlNode osNode = new LibvirtXmlNode( this.getRootXmlNode().getXmlDocument(), childNode );
+					final Os os = Os.newInstance( osNode );
+
+					if ( os != null ) {
+						oses.add( os );
+					}
+				}
+			}
+		}
+
+		return oses;
+	}
+
+	/**
+	 * Lookups an operating system in the libosinfo database specified by the operating system
+	 * identifier.
+	 * 
+	 * @param osId identifier of the operating system to lookup in the libosinfo database.
+	 * @return found operating system from the libosinfo database.
+	 */
+	public static Os lookupOs( String osId )
+	{
+		Os os = null;
+
+		if ( osId != null && !osId.isEmpty() ) {
+			ArrayList<Os> oses = null;
+
+			try {
+				final LibOsInfo osInfo = new LibOsInfo( LibvirtXmlResources.getLibOsInfoXml( "osinfo.xml" ) );
+				oses = osInfo.getOses();
+			} catch ( LibvirtXmlDocumentException | LibvirtXmlSerializationException | LibvirtXmlValidationException e ) {
+				oses = null;
+			}
+
+			if ( oses != null ) {
+				final Predicate<Os> byOsId = osCandidate -> osId.equals( osCandidate.getId() );
+				os = oses.stream().filter( byOsId ).findFirst().orElse( null );
+			}
+		}
+
+		return os;
+	}
+}