1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/org/sonews/feed/PushFeeder.java Wed Jul 01 10:48:22 2009 +0200
1.3 @@ -0,0 +1,107 @@
1.4 +/*
1.5 + * SONEWS News Server
1.6 + * see AUTHORS for the list of contributors
1.7 + *
1.8 + * This program is free software: you can redistribute it and/or modify
1.9 + * it under the terms of the GNU General Public License as published by
1.10 + * the Free Software Foundation, either version 3 of the License, or
1.11 + * (at your option) any later version.
1.12 + *
1.13 + * This program is distributed in the hope that it will be useful,
1.14 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.15 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.16 + * GNU General Public License for more details.
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License
1.19 + * along with this program. If not, see <http://www.gnu.org/licenses/>.
1.20 + */
1.21 +
1.22 +package org.sonews.feed;
1.23 +
1.24 +import java.io.IOException;
1.25 +import java.util.concurrent.ConcurrentLinkedQueue;
1.26 +import org.sonews.daemon.storage.Article;
1.27 +import org.sonews.daemon.storage.Headers;
1.28 +import org.sonews.util.Log;
1.29 +import org.sonews.util.io.ArticleWriter;
1.30 +
1.31 +/**
1.32 + * Pushes new articles to remote newsservers. This feeder sleeps until a new
1.33 + * message is posted to the sonews instance.
1.34 + * @author Christian Lins
1.35 + * @since sonews/0.5.0
1.36 + */
1.37 +class PushFeeder extends AbstractFeeder
1.38 +{
1.39 +
1.40 + private ConcurrentLinkedQueue<Article> articleQueue =
1.41 + new ConcurrentLinkedQueue<Article>();
1.42 +
1.43 + @Override
1.44 + public void run()
1.45 + {
1.46 + while(isRunning())
1.47 + {
1.48 + try
1.49 + {
1.50 + synchronized(this)
1.51 + {
1.52 + this.wait();
1.53 + }
1.54 +
1.55 + Article article = this.articleQueue.poll();
1.56 + String[] groups = article.getHeader(Headers.NEWSGROUPS)[0].split(",");
1.57 + Log.msg("PushFeed: " + article.getMessageID(), true);
1.58 + for(Subscription sub : this.subscriptions)
1.59 + {
1.60 + // Circle check
1.61 + if(article.getHeader(Headers.PATH)[0].contains(sub.getHost()))
1.62 + {
1.63 + Log.msg(article.getMessageID() + " skipped for host "
1.64 + + sub.getHost(), true);
1.65 + continue;
1.66 + }
1.67 +
1.68 + try
1.69 + {
1.70 + for(String group : groups)
1.71 + {
1.72 + if(sub.getGroup().equals(group))
1.73 + {
1.74 + // Delete headers that may cause problems
1.75 + article.removeHeader(Headers.NNTP_POSTING_DATE);
1.76 + article.removeHeader(Headers.NNTP_POSTING_HOST);
1.77 + article.removeHeader(Headers.X_COMPLAINTS_TO);
1.78 + article.removeHeader(Headers.X_TRACE);
1.79 + article.removeHeader(Headers.XREF);
1.80 +
1.81 + // POST the message to remote server
1.82 + ArticleWriter awriter = new ArticleWriter(sub.getHost(), sub.getPort());
1.83 + awriter.writeArticle(article);
1.84 + break;
1.85 + }
1.86 + }
1.87 + }
1.88 + catch(IOException ex)
1.89 + {
1.90 + Log.msg(ex, false);
1.91 + }
1.92 + }
1.93 + }
1.94 + catch(InterruptedException ex)
1.95 + {
1.96 + Log.msg("PushFeeder interrupted.", true);
1.97 + }
1.98 + }
1.99 + }
1.100 +
1.101 + public void queueForPush(Article article)
1.102 + {
1.103 + this.articleQueue.add(article);
1.104 + synchronized(this)
1.105 + {
1.106 + this.notifyAll();
1.107 + }
1.108 + }
1.109 +
1.110 +}