package org.autoplot.hapiserver; /* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.PrintWriter; import java.util.List; 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; import org.das2.datum.TimeParser; import org.das2.datum.TimeUtil; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; /** * * @author jbf */ public class CatalogServlet extends HttpServlet { private static final Logger logger= Logger.getLogger("hapi"); private static final String deployedAt= TimeParser.create( TimeParser.TIMEFORMAT_Z ).format( TimeUtil.now() ); /** * return the JSONObject for the catalog. * @return * @throws JSONException */ public static JSONObject getCatalog() throws JSONException, IOException { JSONObject jo= new JSONObject(); jo.put("HAPI",Util.hapiVersion()); jo.put("x-deployedAt", deployedAt ); JSONArray catalog= HapiServerSupport.getCatalog(); jo.put("catalog",catalog); JSONObject status= new JSONObject(); status.put( "code", 1200 ); status.put( "message", "OK request successful"); jo.put( "status", status ); return jo; } /** * Processes requests for both HTTP GET and POST * 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 */ protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("application/json;charset=UTF-8"); response.setHeader("Access-Control-Allow-Origin", "* " ); response.setHeader("Access-Control-Allow-Methods","GET" ); response.setHeader("Access-Control-Allow-Headers","Content-Type" ); File catalogFile= new File( Util.getHapiHome(), "catalog.json" ); if ( catalogFile.exists() ) { logger.log(Level.FINE, "using cached catalog file {0}", catalogFile); Util.transfer( new FileInputStream(catalogFile), response.getOutputStream() ); return; } try (PrintWriter out = response.getWriter()) { JSONObject jo= getCatalog(); out.write( jo.toString(4) ); } catch ( JSONException ex ) { throw new ServletException(ex); } } // /** * Handles the HTTP GET 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 POST 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"; }// }