com.gsoc.ijosa.liquidgalaxycontroller.PW.collection.JsonObjectRequest.java Source code

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Here is the source code for com.gsoc.ijosa.liquidgalaxycontroller.PW.collection.JsonObjectRequest.java

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/*
 * Copyright 2015 Google Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.gsoc.ijosa.liquidgalaxycontroller.PW.collection;

import org.json.JSONException;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;

/**
 * A class that represents an HTTP request for a JSON object.
 * Both the request payload and the response are JSON objects.
 */
class JsonObjectRequest extends Request<JSONObject> {
    private JSONObject mJsonObject;

    /**
     * Construct a JSON object request.
     * @param url The url to make this HTTP request to.
     * @param jsonObject The JSON payload.
     * @param callback The callback run when the HTTP response is received.
     * @throws MalformedURLException on invalid url
     */
    public JsonObjectRequest(String url, JSONObject jsonObject, RequestCallback callback)
            throws MalformedURLException {
        super(url, callback);
        mJsonObject = jsonObject;
    }

    /**
     * Helper method to make an HTTP request.
     * @param urlConnection The HTTP connection.
     */
    public void writeToUrlConnection(HttpURLConnection urlConnection) throws IOException {
        urlConnection.setDoOutput(true);
        urlConnection.setRequestProperty("Content-Type", "application/json");
        urlConnection.setRequestProperty("Accept", "application/json");
        urlConnection.setRequestMethod("POST");
        OutputStream os = urlConnection.getOutputStream();
        os.write(mJsonObject.toString().getBytes("UTF-8"));
        os.close();
    }

    /**
     * Helper method to read an HTTP response.
     * @param is The InputStream.
     * @return An object representing the HTTP response.
     */
    protected JSONObject readInputStream(InputStream is) throws IOException {
        StringBuilder stringBuilder = new StringBuilder();
        BufferedReader in = new BufferedReader(new InputStreamReader(is, "UTF-8"));
        String line;
        while ((line = in.readLine()) != null) {
            stringBuilder.append(line);
        }
        JSONObject jsonObject;
        try {
            jsonObject = new JSONObject(stringBuilder.toString());
        } catch (JSONException error) {
            throw new IOException(error.toString());
        }
        return jsonObject;
    }

    /**
     * The callback that gets run after the request is made.
     */
    public interface RequestCallback extends Request.RequestCallback<JSONObject> {
    }
}