content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.apex.examples.mrmonitor;
  
  import java.io.IOException;
  
  import org.codehaus.jettison.json.JSONObject;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  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;
  
  /**
   * <p>
   * Util class.
   * </p>
   *
   * @since 0.3.4
   */
  public class MRUtil
  {
  
    private static final Logger logger = LoggerFactory.getLogger(MRUtil.class);
  
    /**
     * This method returns the response content for a given url
     * @param url
     * @return
     */
    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();
      }
    }
  
    /**
     * This method returns the JSONObject for a given string
     * @param json
     * @return
     */
    public static JSONObject getJsonObject(String json)
    {
      try {
        JSONObject jsonObj = new JSONObject(json);
        return jsonObj;
      } catch (Exception e) {
        logger.debug("{}", e.getMessage());
        return null;
      }
    }
  
  }
  