org.apache.openmeetings.rss.LoadAtomRssFeed.java Source code

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Here is the source code for org.apache.openmeetings.rss.LoadAtomRssFeed.java

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/*
 * 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.openmeetings.rss;

import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Iterator;
import java.util.LinkedHashMap;

import org.apache.openmeetings.OpenmeetingsVariables;
import org.apache.openmeetings.data.basic.AuthLevelUtil;
import org.apache.openmeetings.data.basic.dao.ConfigurationDao;
import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.red5.logging.Red5LoggerFactory;
import org.slf4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;

public class LoadAtomRssFeed {

    private static final Logger log = Red5LoggerFactory.getLogger(LoadAtomRssFeed.class,
            OpenmeetingsVariables.webAppRootKey);
    @Autowired
    private ConfigurationDao configurationDao;
    @Autowired
    private AuthLevelUtil authLevelmanagement;

    public LinkedHashMap<String, LinkedHashMap<String, LinkedHashMap<String, LinkedHashMap<String, Object>>>> getRssFeeds(
            Long user_level) {
        try {
            if (authLevelmanagement.checkUserLevel(user_level)) {
                LinkedHashMap<String, LinkedHashMap<String, LinkedHashMap<String, LinkedHashMap<String, Object>>>> returnMap = new LinkedHashMap<String, LinkedHashMap<String, LinkedHashMap<String, LinkedHashMap<String, Object>>>>();

                String url1 = configurationDao.getConfValue("rss_feed1", String.class, "");
                returnMap.put("feed1", this.parseRssFeed(url1));

                String url2 = configurationDao.getConfValue("rss_feed2", String.class, "");
                returnMap.put("feed2", this.parseRssFeed(url2));

                return returnMap;
            } else {
                log.error("[getRssFeeds] authorization required");
            }

        } catch (Exception ex) {
            log.error("[getRssFeeds]", ex);
        }
        return null;
    }

    public LinkedHashMap<String, LinkedHashMap<String, LinkedHashMap<String, Object>>> parseRssFeed(
            String urlEndPoint) {
        try {
            LinkedHashMap<String, LinkedHashMap<String, LinkedHashMap<String, Object>>> lMap = new LinkedHashMap<String, LinkedHashMap<String, LinkedHashMap<String, Object>>>();

            URL url = new URL(urlEndPoint);

            HttpURLConnection conn = (HttpURLConnection) url.openConnection();

            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322)");
            conn.setRequestProperty("Referer", "http://openmeetings.apache.org/");
            conn.connect();

            SAXReader reader = new SAXReader();
            Document document = reader.read(conn.getInputStream());

            Element root = document.getRootElement();
            int l = 0;

            for (@SuppressWarnings("unchecked")
            Iterator<Element> i = root.elementIterator(); i.hasNext();) {
                Element item = i.next();
                LinkedHashMap<String, LinkedHashMap<String, Object>> items = new LinkedHashMap<String, LinkedHashMap<String, Object>>();
                boolean isSubElement = false;

                for (@SuppressWarnings("unchecked")
                Iterator<Element> it2 = item.elementIterator(); it2.hasNext();) {
                    Element subItem = it2.next();

                    LinkedHashMap<String, Object> itemObj = new LinkedHashMap<String, Object>();

                    itemObj.put("name", subItem.getName());
                    itemObj.put("text", subItem.getText());

                    LinkedHashMap<String, String> attributes = new LinkedHashMap<String, String>();

                    for (@SuppressWarnings("unchecked")
                    Iterator<Attribute> attr = subItem.attributeIterator(); attr.hasNext();) {
                        Attribute at = attr.next();
                        attributes.put(at.getName(), at.getText());
                    }
                    itemObj.put("attributes", attributes);

                    // log.error(subItem.getName()+ ": " +subItem.getText());
                    items.put(subItem.getName(), itemObj);
                    isSubElement = true;
                }

                if (isSubElement) {
                    l++;
                    lMap.put("item" + l, items);
                }

            }

            return lMap;

        } catch (Exception err) {
            log.error("[parseRssFeed]", err);
        }
        return null;

    }

}