/*
* Copyright (c) 2009, 2010, 2011, 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.rhythm;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Date;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.b3log.latke.Keys;
import org.b3log.latke.event.AbstractEventListener;
import org.b3log.latke.event.Event;
import org.b3log.latke.event.EventException;
import org.b3log.latke.servlet.HTTPRequestMethod;
import org.b3log.latke.urlfetch.HTTPRequest;
import org.b3log.latke.urlfetch.URLFetchService;
import org.b3log.latke.urlfetch.URLFetchServiceFactory;
import org.b3log.solo.SoloServletListener;
import org.b3log.solo.event.EventTypes;
import org.b3log.solo.model.Article;
import org.b3log.solo.model.Common;
import org.b3log.solo.model.Preference;
import org.b3log.solo.util.Preferences;
import org.json.JSONObject;
/**
* This listener is responsible for sending article to B3log Rhythm.
*
* @author <a href="mailto:DL88250@gmail.com">Liang Ding</a>
* @version 1.0.1.6, Jun 23, 2011
*/
public final class ArticleSender extends AbstractEventListener<JSONObject> {
/**
* Logger.
*/
private static final Logger LOGGER =
Logger.getLogger(ArticleSender.class.getName());
/**
* URL fetch service.
*/
private final URLFetchService urlFetchService = URLFetchServiceFactory.
getURLFetchService();
/**
* Preference utilities.
*/
private Preferences preferenceUtils = Preferences.getInstance();
/**
* URL of adding article to Rhythm.
*/
private static final URL ADD_ARTICLE_URL;
static {
try {
ADD_ARTICLE_URL = new URL(SoloServletListener.B3LOG_RHYTHM_ADDRESS
+ "/add-article.do");
} catch (final MalformedURLException e) {
LOGGER.log(Level.SEVERE,
"Creates remote service address[rhythm add article] error!");
throw new IllegalStateException(e);
}
}
@Override
public void action(final Event<JSONObject> event) throws EventException {
final JSONObject data = event.getData();
LOGGER.log(Level.FINER,
"Processing an event[type={0}, data={1}] in listener[className={2}]",
new Object[]{event.getType(), data,
ArticleSender.class.getName()});
try {
final JSONObject originalArticle =
data.getJSONObject(Article.ARTICLE);
if (!originalArticle.optBoolean(Common.POST_TO_COMMUNITY)
|| !originalArticle.getBoolean(Article.ARTICLE_IS_PUBLISHED)) {
LOGGER.log(Level.FINER,
"Ignores post article[title={0}] to Rhythm",
originalArticle.getString(Article.ARTICLE_TITLE));
return;
}
final JSONObject preference = preferenceUtils.getPreference();
if (null == preference) {
throw new EventException("Not found preference");
}
final String blogHost =
preference.getString(Preference.BLOG_HOST).toLowerCase();
if (Preference.Default.DEFAULT_BLOG_HOST.equals(blogHost)
|| "localhost".equals(blogHost.split(":")[0].trim())) {
LOGGER.log(Level.INFO,
"Blog Solo runs on local server, so should not send "
+ "this article[oId={0}, title={1}] to Rhythm",
new Object[]{
originalArticle.getString(Keys.OBJECT_ID),
originalArticle.getString(Article.ARTICLE_TITLE)});
return;
}
final HTTPRequest httpRequest = new HTTPRequest();
httpRequest.setURL(ADD_ARTICLE_URL);
httpRequest.setRequestMethod(HTTPRequestMethod.POST);
final JSONObject requestJSONObject = new JSONObject();
final JSONObject article = new JSONObject();
article.put(Keys.OBJECT_ID,
originalArticle.getString(Keys.OBJECT_ID));
article.put(Article.ARTICLE_TITLE,
originalArticle.getString(Article.ARTICLE_TITLE));
article.put(Article.ARTICLE_PERMALINK,
originalArticle.getString(Article.ARTICLE_PERMALINK));
article.put(Article.ARTICLE_TAGS_REF,
originalArticle.getString(Article.ARTICLE_TAGS_REF));
article.put(Article.ARTICLE_AUTHOR_EMAIL,
originalArticle.getString(Article.ARTICLE_AUTHOR_EMAIL));
article.put(Article.ARTICLE_CONTENT,
originalArticle.getString(Article.ARTICLE_CONTENT));
article.put(Article.ARTICLE_CREATE_DATE,
((Date) originalArticle.get(Article.ARTICLE_CREATE_DATE)).
getTime());
requestJSONObject.put(Article.ARTICLE, article);
requestJSONObject.put(Common.BLOG_VERSION,
SoloServletListener.VERSION);
requestJSONObject.put(Common.BLOG, "B3log Solo");
requestJSONObject.put(Preference.BLOG_TITLE,
preference.getString(Preference.BLOG_TITLE));
requestJSONObject.put(Preference.BLOG_HOST, blogHost);
httpRequest.setPayload(requestJSONObject.toString().getBytes(
"UTF-8"));
urlFetchService.fetchAsync(httpRequest);
} catch (final Exception e) {
LOGGER.log(Level.SEVERE, "Sends an article to Rhythm error: {0}", e.
getMessage());
}
LOGGER.log(Level.FINER, "Sent an article to Rhythm");
}
/**
* Gets the event type {@linkplain EventTypes#ADD_ARTICLE}.
*
* @return event type
*/
@Override
public String getEventType() {
return EventTypes.ADD_ARTICLE;
}
}