Add meta and config files for ovf format

1 files changed, 107 insertions, 0 deletions

diff --git a/src/main/java/org/openslx/util/vm/OvfConfig.java b/src/main/java/org/openslx/util/vm/OvfConfig.java
new file mode 100644
index 0000000..3055075
--- /dev/null
+++ b/src/main/java/org/openslx/util/vm/OvfConfig.java
@@ -0,0 +1,107 @@
+package org.openslx.util.vm;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+
+import javax.xml.XMLConstants;
+import javax.xml.transform.stream.StreamSource;
+import javax.xml.validation.Schema;
+import javax.xml.validation.SchemaFactory;
+import javax.xml.validation.Validator;
+import javax.xml.xpath.XPathExpressionException;
+
+import org.apache.log4j.Logger;
+import org.openslx.util.Util;
+import org.openslx.util.XmlHelper;
+import org.openslx.util.vm.VmMetaData.HardDisk;
+import org.w3c.dom.Document;
+import org.xml.sax.SAXException;
+
+
+/**
+ * Class handling the parsing of a .ovf machine description file
+ * For now, only used to parse the xml to get the path of the vmdk
+ * from the ovf for sanity checking and cleanup after conversion.
+ */
+public class OvfConfig
+{
+    private static final Logger LOGGER = Logger.getLogger( OvfConfig.class );
+    
+    // key information set during initial parsing of the XML file
+	private String osName = new String();
+	private ArrayList<HardDisk> hddsArray = new ArrayList<HardDisk>();
+
+	// XPath and DOM parsing related members
+    private Document doc = null;
+    
+
+    public OvfConfig( File file ) throws IOException, UnsupportedVirtualizerFormatException
+	{
+		LOGGER.info("Entering OvfConfig class creation");
+		// first validate xml
+		// try {
+		// 	SchemaFactory factory = SchemaFactory.newInstance( XMLConstants.W3C_XML_SCHEMA_NS_URI );
+		// 	InputStream xsdStream = OvfConfig.class.getResourceAsStream( "/master-sync-shared/xml/ovf_1.1.1.xsd" );
+		// 	LOGGER.info("xsdStream creation worked");
+		// 	if ( xsdStream == null ) {
+		// 		LOGGER.warn( "Cannot validate ovf XML: No XSD found in JAR" );
+		// 	} else {
+		// 		LOGGER.info("Before schema creation");
+		// 		Schema schema = factory.newSchema( new StreamSource( xsdStream ) );
+		// 		LOGGER.info("Created schema class");
+		// 		Validator validator = schema.newValidator();
+		// 		LOGGER.info("Created validator class");
+		// 		validator.validate( new StreamSource( file ) );
+		// 		LOGGER.info("Validated");
+		// 	}
+		// } catch ( SAXException e ) {
+		// 	LOGGER.error( "Selected ovf file was not validated against the XSD schema: " + e.getMessage() );
+		// }
+		LOGGER.info("XSD validation worked.");
+		// valid xml, try to create the DOM
+		doc = XmlHelper.parseDocumentFromStream( new FileInputStream( file ) );
+		doc = XmlHelper.removeFormattingNodes( doc );
+		if ( doc == null )
+			throw new UnsupportedVirtualizerFormatException( "Could not create DOM from given ovf machine configuration file!" );
+		LOGGER.info("DOM creation worked");
+		init();
+    }
+    
+    /**
+	 * Main initialization functions parsing the document created during the constructor.
+	 * @throws UnsupportedVirtualizerFormatException 
+	 */
+	private void init() throws UnsupportedVirtualizerFormatException
+	{
+		LOGGER.info("Entering OvfConfig init");
+		if ( Util.isEmptyString( getDisplayName() ) ) {
+			throw new UnsupportedVirtualizerFormatException( "Machine doesn't have a name" );
+		}
+		LOGGER.info( getDisplayName() );
+		// try {
+
+		// 	setHdds();
+		// } catch ( XPathExpressionException e ) {
+		// 	LOGGER.debug( "Could not initialize VBoxConfig", e );
+		// 	return;
+		// }
+    }
+    
+    	/**
+	 * Getter for the display name
+	 *
+	 * @return the display name of this VM
+	 */
+	public String getDisplayName()
+	{
+		try {
+			return XmlHelper.XPath.compile( "/Envelope/VirtualSystem/Name" ).evaluate( this.doc );
+		} catch ( XPathExpressionException e ) {
+			return "";
+		}
+	}
+
+}
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