com.datatorrent.demos.mapreduce.Util.java Source code

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Here is the source code for com.datatorrent.demos.mapreduce.Util.java

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/*
 * Copyright (c) 2013 DataTorrent, 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.datatorrent.demos.mapreduce;

import java.io.IOException;

import org.codehaus.jettison.json.JSONObject;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicResponseHandler;
import org.apache.http.impl.client.DefaultHttpClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * <p>Util class.</p>
 *
 * @since 0.3.4
 */
public class Util {

    private static final Logger logger = LoggerFactory.getLogger(Util.class);

    public static String getJsonForURL(String url) {
        HttpClient httpclient = new DefaultHttpClient();
        logger.debug(url);
        try {

            HttpGet httpget = new HttpGet(url);

            // Create a response handler
            ResponseHandler<String> responseHandler = new BasicResponseHandler();
            String responseBody;
            try {
                responseBody = httpclient.execute(httpget, responseHandler);

            } catch (ClientProtocolException e) {
                logger.debug(e.getMessage());
                return null;

            } catch (IOException e) {
                logger.debug(e.getMessage());
                return null;
            } catch (Exception e) {
                logger.debug(e.getMessage());
                return null;
            }
            return responseBody.trim();
        } finally {
            httpclient.getConnectionManager().shutdown();
        }
    }

    public static JSONObject getJsonObject(String json) {
        try {
            JSONObject jsonObj = new JSONObject(json);
            return jsonObj;
        } catch (Exception e) {
            logger.debug("{}", e.getMessage());
            return null;
        }
    }

}