[Archive-access-cvs] SF.net SVN: archive-access: [1784] trunk/archive-access/projects/wayback/ wayback-core/src/main/java/org/archive/wayback/webapp/RequestMapper.java

[<bra...@us...>]

Revision: 1784
          http://archive-access.svn.sourceforge.net/archive-access/?rev=1784&view=rev
Author:   bradtofel
Date:     2007-07-16 16:07:00 -0700 (Mon, 16 Jul 2007)

Log Message:
-----------
REFACTOR: initial rev of new core Wayback object which binds incoming requests to a WaybackContext, using Spring to construct appropriately configured WaybackContexts.

Added Paths:
-----------
    trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/webapp/RequestMapper.java

Added: trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/webapp/RequestMapper.java
===================================================================
--- trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/webapp/RequestMapper.java	                        (rev 0)
+++ trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/webapp/RequestMapper.java	2007-07-16 23:07:00 UTC (rev 1784)
@@ -0,0 +1,122 @@
+/* RequestMapper
+ *
+ * $Id$
+ *
+ * Created on 5:36:36 PM Apr 20, 2007.
+ *
+ * Copyright (C) 2007 Internet Archive.
+ *
+ * This file is part of wayback-webapp.
+ *
+ * wayback-webapp is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
+ * any later version.
+ *
+ * wayback-webapp is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser Public License
+ * along with wayback-webapp; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+package org.archive.wayback.webapp;
+
+import java.util.logging.Logger;
+
+import javax.servlet.ServletContext;
+import javax.servlet.http.HttpServletRequest;
+
+import org.archive.wayback.exception.ConfigurationException;
+import org.springframework.beans.factory.BeanFactory;
+import org.springframework.beans.factory.xml.XmlBeanFactory;
+import org.springframework.core.io.FileSystemResource;
+import org.springframework.core.io.Resource;
+
+/**
+ * RequestMapper accepts a request, and maps that request to
+ * a WaybackContext suitable for that request.
+ * 
+ * This object is a singleton, and the class provides methods for constructing
+ * and accessing the singleton.
+ *
+ * @author brad
+ * @version $Date$, $Revision$
+ */
+public class RequestMapper {
+	private static final Logger LOGGER = Logger.getLogger(RequestMapper.class
+			.getName());
+	
+	private final static String PORT_SEPARATOR = ":";
+	
+
+	private final static String CONFIG_PATH = "config-path";
+//	private WaybackContext defaultContext = null;
+//	private ServletContext servletContext = null;
+	
+	private BeanFactory factory = null;
+	/**
+	 * @param configPath
+	 * @param servletContext
+	 * @throws ConfigurationException 
+	 */
+	public RequestMapper(ServletContext servletContext) throws ConfigurationException {
+		
+//		this.servletContext = servletContext;
+		String configPath = servletContext.getInitParameter(CONFIG_PATH);
+		if(configPath == null) {
+			throw new ConfigurationException("Missing " + CONFIG_PATH 
+					+ " parameter");
+		}
+		String resolvedPath = servletContext.getRealPath(configPath);
+		Resource resource = new FileSystemResource(resolvedPath);
+		factory = new XmlBeanFactory(resource);
+	}
+	
+	private String getContextID(HttpServletRequest request) {
+		String requestPath = request.getRequestURI();
+//		String absolutePath = servletContext.getRealPath(requestPath);
+//		File tmpFile = new File(absolutePath);
+//		if(tmpFile.exists()) {
+//			return null;
+//		}
+		String collection = "";
+		if(requestPath.startsWith("/")) {
+			int secondSlash = requestPath.indexOf("/",1);
+			if(secondSlash != -1) {
+				collection = PORT_SEPARATOR + 
+					requestPath.substring(1,requestPath.indexOf("/",1));
+			}
+		}
+		return String.valueOf(request.getLocalPort()) + collection;
+	}
+	
+	/**
+	 * @param request
+	 * @return WaybackContext that handles the specific incoming HTTP request
+	 */
+	public WaybackContext mapContext(HttpServletRequest request) {
+
+		WaybackContext context = null;
+		String contextID = String.valueOf(request.getLocalPort());
+		if(factory.containsBean(contextID)) {
+			context = (WaybackContext) factory.getBean(contextID);
+		} else {
+			contextID = getContextID(request);
+			if(factory.containsBean(contextID)) {
+				context = (WaybackContext) factory.getBean(contextID);
+			}
+		}
+		return context;
+	}
+
+	/**
+	 * clean up all WaybackContexts, which should release resources gracefully.
+	 */
+	public void destroy() {
+		LOGGER.info("shutting down contexts...");
+		//TODO: shut everything down
+	}
+}


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