org/sonews/web/SonewsPeerServlet.java
author chris <chris@marvin>
Wed, 01 Jul 2009 10:48:22 +0200
changeset 2 1090e2141798
parent 1 6fceb66e1ad7
permissions -rw-r--r--
sonews/0.5.1 fixes merged
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/*
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 *   SONEWS News Server
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 *   see AUTHORS for the list of contributors
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 *
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 *   This program is free software: you can redistribute it and/or modify
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 *   it under the terms of the GNU General Public License as published by
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 *   the Free Software Foundation, either version 3 of the License, or
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 *   (at your option) any later version.
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 *
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 *   This program is distributed in the hope that it will be useful,
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 *   GNU General Public License for more details.
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 *
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 *   You should have received a copy of the GNU General Public License
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 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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package org.sonews.web;
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import java.io.IOException;
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import java.util.HashSet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.sonews.util.StringTemplate;
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/**
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 * Servlet that shows the Peers and the Peering Rules.
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 * @author Christian Lins
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 * @since sonews/0.5.0
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 */
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public class SonewsPeerServlet extends AbstractSonewsServlet
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{
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  private static final long serialVersionUID = 245345346356L;
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  @Override
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  public void doGet(HttpServletRequest req, HttpServletResponse resp)
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    throws IOException
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  {
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    synchronized(this)
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    {
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      connectToNewsserver();
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      StringTemplate tmpl = getTemplate("SonewsPeerServlet.tmpl");
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      // Read peering rules from newsserver
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      printlnToNewsserver("XDAEMON LIST PEERINGRULES");
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      String line = readlnFromNewsserver();
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      if(!line.startsWith("200 "))
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      {
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        throw new IOException("Unexpected reply: " + line);
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      }
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      // Create FEED_RULES String
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      HashSet<String> peers        = new HashSet<String>();
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      StringBuilder   feedRulesStr = new StringBuilder();
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      for(;;)
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      {
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        line = readlnFromNewsserver();
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        if(line.equals("."))
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        {
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          break;
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        }
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        else
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        {
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          feedRulesStr.append(line);
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          feedRulesStr.append("<br/>");
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          String[] lineChunks = line.split(" ");
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          peers.add(lineChunks[1]);
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        }
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      }
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      // Create PEERS string
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      StringBuilder peersStr = new StringBuilder();
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      for(String peer : peers)
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      {
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        peersStr.append(peer);
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        peersStr.append("<br/>");
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      }
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      // Set server name
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      tmpl.set("PEERS", peersStr.toString());
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      tmpl.set("PEERING_RULES", feedRulesStr.toString());
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      tmpl.set("SERVERNAME", hello.split(" ")[2]);
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      tmpl.set("TITLE", "Peers");
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      resp.getWriter().println(tmpl.toString());
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      resp.getWriter().flush();
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      resp.setStatus(HttpServletResponse.SC_OK);
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      disconnectFromNewsserver();
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    }
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  }
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}