org.craftercms.cstudio.publishing.servlet.DeployVersionServlet.java Source code

Introduction

Here is the source code for org.craftercms.cstudio.publishing.servlet.DeployVersionServlet.java

Source

/*
 * Copyright (C) 2007-2013 Crafter Software Corporation.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */
package org.craftercms.cstudio.publishing.servlet;

import java.io.IOException;
import java.io.PrintWriter;

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

import org.apache.commons.lang.StringUtils;
import org.craftercms.cstudio.publishing.version.VersionException;
import org.craftercms.cstudio.publishing.version.VersioningService;

public class DeployVersionServlet extends HttpServlet {

    private VersioningService versioningService;
    /**
     * 
     */
    private static final long serialVersionUID = 4952629503662163667L;
    public static final String PARAM_NEW_VERSION = "version";

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        PrintWriter serverOut = response.getWriter();
        try {
            String target = request.getParameter(FileUploadServlet.PARAM_TARGET);
            if (StringUtils.isEmpty(target)) {
                response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
                serverOut.write("Parameter \"" + FileUploadServlet.PARAM_TARGET + "\" is need");
            } else {
                String currerntVersion = versioningService.readVersion(target);
                response.setStatus(HttpServletResponse.SC_OK);
                serverOut.write(currerntVersion);
            }
        } catch (VersionException ex) {
            response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            serverOut.write(ex.getMessage());
        }
        setDefaultHeaders(response);
        serverOut.flush();
        response.flushBuffer();
    }

    /**
     * Prevents Caching
     * 
     * @param response
     */
    private void setDefaultHeaders(HttpServletResponse response) {
        // Set to expire far in the past.
        response.setHeader("Expires", "Sat, 6 May 1995 12:00:00 GMT");
        // Set standard HTTP/1.1 no-cache headers.
        response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
        // Set IE extended HTTP/1.1 no-cache headers (use addHeader).
        response.addHeader("Cache-Control", "post-check=0, pre-check=0");
        // Set standard HTTP/1.0 no-cache header.
        response.setHeader("Pragma", "no-cache");
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        PrintWriter serverOut = response.getWriter();
        try {
            String target = request.getParameter(FileUploadServlet.PARAM_TARGET);
            String version = request.getParameter(PARAM_NEW_VERSION);
            if (StringUtils.isEmpty(target)) {
                response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
                serverOut
                        .write("Parameter \"" + FileUploadServlet.PARAM_TARGET + "\" is need and can not be empty");
            } else if (StringUtils.isEmpty(version)) {
                response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
                serverOut.write("Parameter \"" + PARAM_NEW_VERSION + "\" is need and can not be empty");
            } else {
                versioningService.writeNewVersion(version, target);
                response.setStatus(HttpServletResponse.SC_OK);
                serverOut.write(version);
            }
        } catch (VersionException ex) {
            response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
            serverOut.write(ex.getMessage());
        }
        setDefaultHeaders(response);
        serverOut.flush();
        response.flushBuffer();
    }

    @Override
    protected void doPut(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req, resp);
    }

    public void setVersioningService(VersioningService versioningService) {
        this.versioningService = versioningService;
    }
}