/*
* Copyright (c) 2009, 2010, 2011, 2012, B3log Team
*
* 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 org.b3log.solo.event.ping;
import java.net.URL;
import java.net.URLEncoder;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.commons.lang.StringUtils;
import org.b3log.latke.event.AbstractEventListener;
import org.b3log.latke.event.Event;
import org.b3log.latke.event.EventException;
import org.b3log.latke.urlfetch.HTTPRequest;
import org.b3log.latke.urlfetch.URLFetchService;
import org.b3log.latke.urlfetch.URLFetchServiceFactory;
import org.b3log.solo.event.EventTypes;
import org.b3log.solo.model.Article;
import org.b3log.solo.model.Preference;
import org.b3log.solo.service.PreferenceQueryService;
import org.json.JSONObject;
/**
* This listener is responsible for pinging <a href="http://blogsearch.google.com">
* Google Blog Search Service</a> asynchronously while adding an article.
*
* <p>
* <li>
* <a href="http://www.google.com/help/blogsearch/pinging_API.html">
* About Google Blog Search Pinging Service API</a>
* </li>
* </p>
*
* @author <a href="mailto:DL88250@gmail.com">Liang Ding</a>
* @version 1.0.0.2, Jun 23, 2011
* @see UpdateArticleGoogleBlogSearchPinger
* @since 0.3.1
*/
public final class AddArticleGoogleBlogSearchPinger extends AbstractEventListener<JSONObject> {
/**
* Logger.
*/
private static final Logger LOGGER = Logger.getLogger(AddArticleGoogleBlogSearchPinger.class.getName());
/**
* URL fetch service.
*/
private static final URLFetchService URL_FETCH_SERVICE = URLFetchServiceFactory.getURLFetchService();
/**
* Gets the event type {@linkplain EventTypes#ADD_ARTICLE}.
*
* @return event type
*/
@Override
public String getEventType() {
return EventTypes.ADD_ARTICLE;
}
@Override
public void action(final Event<JSONObject> event) throws EventException {
final JSONObject eventData = event.getData();
String articleTitle = null;
try {
final JSONObject article = eventData.getJSONObject(Article.ARTICLE);
articleTitle = article.getString(Article.ARTICLE_TITLE);
final JSONObject preference = PreferenceQueryService.getInstance().getPreference();
final String blogTitle = preference.getString(Preference.BLOG_TITLE);
String blogHost = preference.getString(Preference.BLOG_HOST).
toLowerCase().trim();
if ("localhost".equals(blogHost.split(":")[0].trim())) {
LOGGER.log(Level.INFO, "Blog Solo runs on local server, so should not ping "
+ "Google Blog Search Service for the article[title={0}]",
new Object[]{article.getString(Article.ARTICLE_TITLE)});
return;
}
blogHost = StringUtils.removeEnd("http://" + blogHost, "/");
final String articlePermalink = blogHost + article.getString(Article.ARTICLE_PERMALINK);
final String spec = "http://blogsearch.google.com/ping?name="
+ URLEncoder.encode(blogTitle, "UTF-8") + "&url=" + URLEncoder.encode(blogHost, "UTF-8")
+ "&changesURL=" + URLEncoder.encode(articlePermalink, "UTF-8");
LOGGER.log(Level.FINER, "Request Google Blog Search Service API[{0}] while adding an "
+ "article[title=" + articleTitle + "]", spec);
final HTTPRequest request = new HTTPRequest();
request.setURL(new URL(spec));
URL_FETCH_SERVICE.fetchAsync(request);
} catch (final Exception e) {
LOGGER.log(Level.SEVERE, "Ping Google Blog Search Service fail while adding an article[title=" + articleTitle + "]", e);
}
}
}