author | František Kučera <franta-hg@frantovo.cz> |
Thu Oct 20 10:50:58 2011 +0200 (2011-10-20) | |
changeset 103 | a788bf0e1080 |
parent 35 | ed84c8bdd87b |
permissions | -rwxr-xr-x |
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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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|
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package org.sonews.daemon; |
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|
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import org.sonews.util.Log; |
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import java.nio.ByteBuffer; |
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import java.nio.channels.SocketChannel; |
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import java.util.concurrent.ArrayBlockingQueue; |
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|
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/** |
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* Does most of the work: parsing input, talking to client and Database. |
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* @author Christian Lins |
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* @since sonews/0.5.0 |
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*/ |
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class ConnectionWorker extends AbstractDaemon |
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{ |
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|
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// 256 pending events should be enough |
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private static ArrayBlockingQueue<SocketChannel> pendingChannels = new ArrayBlockingQueue<SocketChannel>(256, true); |
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|
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/** |
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* Registers the given channel for further event processing. |
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* @param channel |
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*/ |
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public static void addChannel(SocketChannel channel) |
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throws InterruptedException |
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{ |
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pendingChannels.put(channel); |
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} |
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|
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/** |
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* Processing loop. |
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*/ |
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@Override |
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public void run() |
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{ |
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while (isRunning()) { |
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try { |
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// Retrieve and remove if available, otherwise wait. |
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SocketChannel channel = pendingChannels.take(); |
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|
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if (channel != null) { |
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// Connections.getInstance().get() MAY return null |
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NNTPConnection conn = Connections.getInstance().get(channel); |
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|
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// Try to lock the connection object |
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if (conn != null && conn.tryReadLock()) { |
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ByteBuffer buf = conn.getBuffers().nextInputLine(); |
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while (buf != null) // Complete line was received |
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{ |
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final byte[] line = new byte[buf.limit()]; |
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buf.get(line); |
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ChannelLineBuffers.recycleBuffer(buf); |
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|
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// Here is the actual work done |
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conn.lineReceived(line); |
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|
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// Read next line as we could have already received the next line |
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buf = conn.getBuffers().nextInputLine(); |
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} |
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conn.unlockReadLock(); |
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} else { |
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addChannel(channel); |
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} |
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} |
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} catch (InterruptedException ex) { |
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Log.get().info("ConnectionWorker interrupted: " + ex); |
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} catch (Exception ex) { |
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Log.get().severe("Exception in ConnectionWorker: " + ex); |
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ex.printStackTrace(); |
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} |
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} // end while(isRunning()) |
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} |
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} |