gov.nih.nci.nbia.servlet.DownloadServletVersion.java Source code

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Here is the source code for gov.nih.nci.nbia.servlet.DownloadServletVersion.java

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/*L
 *  Copyright SAIC, Ellumen and RSNA (CTP)
 *
 *
 *  Distributed under the OSI-approved BSD 3-Clause License.
 *  See http://ncip.github.com/national-biomedical-image-archive/LICENSE.txt for details.
 */
package gov.nih.nci.nbia.servlet;

import gov.nih.nci.nbia.util.NCIAConfig;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.io.IOUtils;

/**
 * @author Q. Pan
 *
 */
public class DownloadServletVersion extends HttpServlet {
    private static String osParam = "os";
    private static String winUrl = NCIAConfig.getWinInstallerLink();
    private static String macUrl = NCIAConfig.getMacInstallerLink();
    private static String centOsUrl = NCIAConfig.getCentOSInstallerLink();
    private static String ubuntuUrl = NCIAConfig.getUbuntuInstallerLink();
    private static String helpDeskLink = NCIAConfig.getDownloaderAppHelpDeskLink();
    private static String wikiLink = NCIAConfig.getDownloaderAppOnlineHelpUrl();

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doGet(request, response);
    }

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String os = request.getParameter(osParam);
        String urlForDownload = null;
        if (os.startsWith("windows")) {
            urlForDownload = winUrl;
        } else if (os.startsWith("mac")) {
            urlForDownload = macUrl;
        } else if (os.equals("CentOS")) {
            urlForDownload = centOsUrl;
        } else if (os.equals("Ubuntu")) {
            urlForDownload = ubuntuUrl;
        }

        String forcedGrade = null;
        try {
            forcedGrade = NCIAConfig.getDownloaderAppForcedUpgrade();
        } catch (RuntimeException ex) {
            forcedGrade = "false";
            //ex.printStackTrace();
        }

        response.setStatus(HttpServletResponse.SC_OK);

        List<String> readLines = new ArrayList<String>();
        readLines.add(NCIAConfig.getLatestDownloaderVersion());
        readLines.add(urlForDownload);
        readLines.add(NCIAConfig.getEncryptionKey());
        readLines.add(forcedGrade);
        readLines.add(helpDeskLink);
        readLines.add(wikiLink);
        OutputStream outStream = response.getOutputStream();
        IOUtils.writeLines(readLines, System.getProperty("line.separator"), outStream);
        outStream.close();
    }
}