org.xbmc.android.jsonrpc.io.RemoteExecutor.java Source code

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Here is the source code for org.xbmc.android.jsonrpc.io.RemoteExecutor.java

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/*
 *      Copyright (C) 2005-2015 Team XBMC
 *      http://xbmc.org
 *
 *  This Program 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 2, or (at your option)
 *  any later version.
 *
 *  This Program 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 XBMC Remote; see the file license.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *  http://www.gnu.org/copyleft/gpl.html
 *
 */

package org.xbmc.android.jsonrpc.io;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;

import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.entity.StringEntity;
import org.json.JSONObject;
import org.xbmc.android.jsonrpc.io.JsonHandler.HandlerException;
import org.xbmc.android.util.google.HttpHelper;
import org.xmlpull.v1.XmlPullParser;

import android.content.ContentResolver;
import android.util.Log;

/**
 * Executes an {@link HttpUriRequest} and passes the HTTP body of the result as a String to the given {@link JsonHandler}.
 * <p>
 * This class was closely inspired by Google's official iosched app, see
 * http://code.google.com/p/iosched/
 * 
 * @author freezy <freezy@xbmc.org>
 */
public class RemoteExecutor {

    public static final String TAG = RemoteExecutor.class.getSimpleName();

    private final HttpClient mHttpClient;
    private final ContentResolver mResolver;

    public RemoteExecutor(ContentResolver resolver) {
        mHttpClient = HttpHelper.getHttpClient();
        mResolver = resolver;
    }

    /**
     * Execute a {@link HttpPost} request, passing a valid response through
     * {@link JsonHandler#parseAndApply(XmlPullParser, ContentResolver)}.
     */
    public void executePost(String url, JSONObject entity, JsonHandler handler) throws HandlerException {
        final HttpPost request = new HttpPost(url);
        try {
            request.setEntity(new StringEntity(entity.toString(), "UTF-8"));
            request.addHeader("Content-Type", "application/json");
            Log.i(TAG, "POSTING: " + entity.toString());
        } catch (UnsupportedEncodingException e) {
            throw new HandlerException("Cannon encode JSON object to a String.", e);
        }
        execute(request, handler);
    }

    /**
     * Execute this {@link HttpUriRequest}, passing a valid response through
     * {@link JsonHandler#parseAndApply(XmlPullParser, ContentResolver)}.
     */
    public void execute(HttpUriRequest request, JsonHandler handler) throws HandlerException {
        try {

            final HttpResponse resp = mHttpClient.execute(request);
            final int status = resp.getStatusLine().getStatusCode();
            if (status != HttpStatus.SC_OK) {
                throw new HandlerException(
                        "Unexpected server response " + resp.getStatusLine() + " for " + request.getRequestLine());
            }

            final InputStream input = resp.getEntity().getContent();
            try {

                final BufferedReader reader = new BufferedReader(new InputStreamReader(input, "UTF-8"), 8192);
                final StringBuilder sb = new StringBuilder();
                for (String line = null; (line = reader.readLine()) != null;) {
                    sb.append(line).append("\n");
                }
                //Log.d(TAG, "RESPONSE: " + sb.toString());
                handler.parseAndApply(sb, mResolver);

            } catch (HandlerException e) {
                throw e;
            } finally {
                if (input != null)
                    input.close();
            }

        } catch (HandlerException e) {
            throw e;
        } catch (IOException e) {
            throw new HandlerException("Problem reading remote response for " + request.getRequestLine(), e);
        }
    }
}