com.sifiso.dvs.gateway.PDFServlet.java Source code

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Here is the source code for com.sifiso.dvs.gateway.PDFServlet.java

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/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package com.sifiso.dvs.gateway;

import com.google.gson.Gson;
import com.sifiso.dvs.gate.dto.RequestDTO;
import com.sifiso.dvs.gate.dto.ResponseDTO;
import com.sifiso.dvs.util.DocFileUtil;
import com.sifiso.dvs.util.PlatformUtil;
import java.io.IOException;
import java.io.PrintWriter;
import java.math.BigDecimal;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

/**
 *
 * @author CodeTribe1
 */
@WebServlet(name = "PDFServlet", urlPatterns = { "/pdf" })
public class PDFServlet extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @EJB
    DocFileUtil docFileUtil;
    @EJB
    PlatformUtil platformUtil;

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("application/json;charset=UTF-8");
        PrintWriter out = response.getWriter();
        long start = System.currentTimeMillis();

        ResponseDTO ur = new ResponseDTO();
        String json;
        Gson gson = new Gson();
        try {
            boolean isMultipart = ServletFileUpload.isMultipartContent(request);
            if (isMultipart) {
                ur = docFileUtil.downloadPDF(request, platformUtil);
            } else {
                RequestDTO dto = getRequest(gson, request);
                switch (dto.getRequestType()) {

                }

            }

        } catch (FileUploadException ex) {
            logger.log(Level.SEVERE, "File upload fucked", ex);
            ur.setStatusCode(111);
            ur.setMessage("Error. Unable to download file(s) sent. Contact Support");

        } catch (Exception e) {
            logger.log(Level.SEVERE, "Servlet file upload fucked", e);
            ur.setStatusCode(113);
            ur.setMessage("Error. Generic server exception");

        } finally {
            json = gson.toJson(ur);
            out.println(json);
            out.close();
            long end = System.currentTimeMillis();
            logger.log(Level.INFO, "PhotoServlet done, elapsed: {0} seconds", getElapsed(start, end));
        }
    }

    public static double getElapsed(long start, long end) {
        BigDecimal m = new BigDecimal(end - start).divide(new BigDecimal(1000));
        return m.doubleValue();
    }

    static final Logger logger = Logger.getLogger("PDFServlet");

    private RequestDTO getRequest(Gson gson, HttpServletRequest req) {

        String json = req.getParameter("JSON");
        RequestDTO cr = gson.fromJson(json, RequestDTO.class);

        if (cr == null) {
            cr = new RequestDTO();
        }

        return cr;
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}