Metacat

/**

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */

package edu.ucsb.nceas.metacat.index;

import java.net.URL;

import java.util.List;

import javax.servlet.ServletConfig;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.dataone.configuration.Settings;

 * A servlet class for the Metadata Index module. This class only does one thing - initialize the ApplicationController class.

 * @author tao

 *

 */

public class MetacatIndexServlet extends HttpServlet {

    // see http://www.docjar.com/docs/api/org/springframework/context/support/FileSystemXmlApplicationContext.html

	private static Log log = LogFactory.getLog(MetacatIndexServlet.class);

     * Initialize the servlet

     */

    public void init(ServletConfig config) throws ServletException {

        //System.out.println("++++++++++++++++++++++++------------------- start the servlet");

        String metacatPropertiesFilePath = config.getServletContext().getInitParameter("metacat.properties.path");

        File contextDeploymentDir = new File(config.getServletContext().getRealPath("/"));

        String fullMetacatPropertiesFilePath = contextDeploymentDir.getParent()  + metacatPropertiesFilePath;

        //System.out.println("the path is "+url.getPath());

        //System.out.println("the file is "+url.getPath());

            ApplicationController controller = new ApplicationController("/index-processor-context.xml", fullMetacatPropertiesFilePath);

             Thread controllerThread = new Thread(controller);

             controllerThread.start();

            throw new ServletException(e.getMessage());

        }

        //controller.startIndex();//Start to generate indexes for those haven't been indexed in another thread

    }

    /**

     * Loads the metacat.prioerties into D1 Settings utility

     * this gives us access to all metacat properties as well as

     * overriding any properties as needed.

     *

     * Makes sure shared Hazelcast configuration file location is set

     *

     * @param config the servlet config

     */

			// find the sibling metacat.properties file

			File contextDeploymentDir = new File(config.getServletContext().getRealPath("/"));

			String fullMetacatPropertiesFilePath = contextDeploymentDir.getParent()  + metacatPropertiesFilePath;

		} catch (ConfigurationException e) {

			log.error("Could not initialize shared Metacat properties. " + e.getMessage(), e);

		}

		// make sure hazelcast configuration is defined so that

		if (hzConfigFileName == null) {

			// use default metacat hazelcast.xml file in metacat deployment

			hzConfigFileName =

    				Settings.getConfiguration().getString("application.deployDir") +

    				"/" +

    				Settings.getConfiguration().getString("application.context") +

    				"/WEB-INF/hazelcast.xml";

			// set it for other parts of the code

			Settings.getConfiguration().setProperty("dataone.hazelcast.configFilePath", hzConfigFileName);

			//if we don't set this property, d1_cn_index_processor will use the default location /etc/dataone/storage.

			Settings.getConfiguration().setProperty("dataone.hazelcast.location.clientconfig", hzConfigFileName);

    /**

     *Actions needed to be done before close the servlet

     */

    public void destroy() {

     //do nothing

    }

    /** Handle "GET" method requests from HTTP clients */

    public void doGet(HttpServletRequest request, HttpServletResponse response)

    throws ServletException, IOException {

        //do nothing

    }

    /** Handle "POST" method requests from HTTP clients */

    public void doPost(HttpServletRequest request, HttpServletResponse response)

    throws ServletException, IOException {

        //do nothing

    }

}