ch.ethz.coss.nervous.pulse.WriteJSON.java Source code

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Here is the source code for ch.ethz.coss.nervous.pulse.WriteJSON.java

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/*******************************************************************************
 *     SwarmPulse - A service for collective visualization and sharing of mobile 
 *     sensor data, text messages and more.
 *
 *     Copyright (C) 2015 ETH Zrich, COSS
 *
 *     This file is part of SwarmPulse.
 *
 *     SwarmPulse 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.
 *
 *     SwarmPulse 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 SwarmPulse. If not, see <http://www.gnu.org/licenses/>.
 *
 *
 *    Author:
 *    Prasad Pulikal - prasad.pulikal@gess.ethz.ch  - Initial design and implementation
 *******************************************************************************/
package ch.ethz.coss.nervous.pulse;

import java.io.IOException;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.Scanner;

import ch.ethz.coss.nervous.pulse.model.LightReading;
import ch.ethz.coss.nervous.pulse.model.NoiseReading;
import ch.ethz.coss.nervous.pulse.model.TextVisual;
import ch.ethz.coss.nervous.pulse.model.Visual;

import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import com.google.gson.JsonPrimitive;

public class WriteJSON {

    public static void sendJSON(Socket socket, Object o, double[] o2, int type) {

        try {
            Scanner in = new Scanner(socket.getInputStream());

            while (!in.nextLine().isEmpty())
                ;

            PrintWriter out = new PrintWriter(socket.getOutputStream());

            String message = new Gson().toJson(o);
            String message2 = new Gson().toJson(o2[0]);
            String message3 = new Gson().toJson(o2[1]);
            String message4 = new Gson().toJson(type);
            String bothJson = "[" + message + "," + message2 + "," + message3 + "," + message4 + "]";
            out.println("HTTP/1.0 200 OK");
            out.println("Content-Type: text/json");
            out.printf("Content-Length: %d%n", bothJson.length());
            out.println("Access-Control-Allow-Origin: *");
            out.println();
            out.println(bothJson);
            out.flush();

            socket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void sendJSON(Socket socket, Object o) {

        try {
            Scanner in = new Scanner(socket.getInputStream());

            while (!in.nextLine().isEmpty())
                ;

            PrintWriter out = new PrintWriter(socket.getOutputStream());

            String message = new Gson().toJson(o);

            out.println("HTTP/1.0 200 OK");
            out.println("Content-Type: text/json");
            out.printf("Content-Length: %d%n", message.length());
            out.println("Access-Control-Allow-Origin: *");
            out.println();
            out.println(message);
            out.flush();

            socket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void sendGeoJSON(Socket socket, Object o) {

        try {
            Scanner in = new Scanner(socket.getInputStream());

            while (!in.nextLine().isEmpty())
                ;

            PrintWriter out = new PrintWriter(socket.getOutputStream());

            Visual reading = (Visual) o;

            JsonObject feature = new JsonObject();
            try {
                feature.addProperty("type", "Feature");
                // JsonArray featureList = new JsonArray();
                // iterate through your list
                // for (ListElement obj : list) {
                // {"geometry": {"type": "Point", "coordinates": [-94.149,
                // 36.33]}
                JsonObject point = new JsonObject();
                point.addProperty("type", "Point");
                // construct a JSONArray from a string; can also use an array or
                // list
                JsonArray coord = new JsonArray();
                coord.add(new JsonPrimitive(reading.location.latnLong[0]));
                coord.add(new JsonPrimitive(reading.location.latnLong[1]));
                point.add("coordinates", coord);
                feature.add("geometry", point);
                JsonObject properties = new JsonObject();
                if (reading.type == 0) {
                    // System.out.println("Reading instance of light");
                    properties.addProperty("readingType", "" + 0);
                    properties.addProperty("lightLevel", "" + ((LightReading) reading).lightVal);
                } else if (reading.type == 1) {
                    properties.addProperty("readingType", "" + 1);
                    properties.addProperty("noiseLevel", "" + ((NoiseReading) reading).soundVal);
                } else if (reading.type == 2) {
                    properties.addProperty("readingType", "" + 2);
                    properties.addProperty("message", "" + ((TextVisual) reading).textMsg);
                } else {
                    // System.out.println("Reading instance not known");
                }

                feature.add("properties", properties);

                // }
            } catch (JsonParseException e) {
                // System.out.println("can't save json object: " +
                // e.toString());
            }
            // output the result
            // System.out.println("featureCollection=" + feature.toString());

            String message = feature.toString();

            out.println("HTTP/1.0 200 OK");
            out.println("Content-Type: text/json");
            out.printf("Content-Length: %d%n", message.length());
            out.println("Access-Control-Allow-Origin: *");
            out.println();
            out.println(message);
            out.flush();

            socket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}