com.dgraf.nashornplayground.Performance.java Source code

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Here is the source code for com.dgraf.nashornplayground.Performance.java

Source

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

import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.base.Charsets;
import com.google.common.io.Resources;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.URL;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author dgraf
 */
public class Performance extends HttpServlet {

    private nashornScriptset scriptset;
    private final nashornScriptRunner runner;

    public Performance() {
        super();
        runner = new nashornScriptRunner();
        scriptset = new nashornScriptset();
        try {
            scriptset.setName("Performance");
            URL url = Resources.getResource("com/dgraf/nashornplayground/examples/performance.js");
            String script = Resources.toString(url, Charsets.UTF_8);
            scriptset.setScript(script);
        } catch (IOException ex) {
            Logger.getLogger(HelloWorld.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    // <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 {

        PrintWriter out = response.getWriter();
        response.setContentType("application/json;charset=UTF-8");
        response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
        response.setHeader("Pragma", "no-cache");
        response.setDateHeader("Expires", 0);

        ObjectMapper m = new ObjectMapper();
        out.write(m.writeValueAsString(scriptset));
    }

    /**
     * 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 {

        PrintWriter out = response.getWriter();
        response.setContentType("application/json;charset=UTF-8");
        response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
        response.setHeader("Pragma", "no-cache");
        response.setDateHeader("Expires", 0);
        BufferedReader reader = request.getReader();
        StringBuilder json = new StringBuilder();
        String line;
        ObjectMapper mapper = new ObjectMapper();
        while ((line = reader.readLine()) != null)
            json.append(line);

        scriptset = mapper.readValue(json.toString(), nashornScriptset.class);

        runner.run(scriptset);

        out.write(mapper.writeValueAsString(scriptset));

    }

    @Override
    protected void doPut(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        PrintWriter out = response.getWriter();
        response.setContentType("application/json;charset=UTF-8");
        response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
        response.setHeader("Pragma", "no-cache");
        response.setDateHeader("Expires", 0);

        ObjectMapper mapper = new ObjectMapper();
        scriptset.reset();
        out.write(mapper.writeValueAsString(scriptset));

    }

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

}