| // |
| // ======================================================================== |
| // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.server; |
| |
| import org.eclipse.jetty.util.BlockingArrayQueue; |
| import org.eclipse.jetty.util.log.Log; |
| import org.eclipse.jetty.util.log.Logger; |
| |
| import java.io.IOException; |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.concurrent.TimeUnit; |
| |
| |
| /* ------------------------------------------------------------ */ |
| /** |
| * An asynchronously writing NCSA Request Log |
| */ |
| public class AsyncNCSARequestLog extends NCSARequestLog |
| { |
| private static final Logger LOG = Log.getLogger(AsyncNCSARequestLog.class); |
| private final BlockingQueue<String> _queue; |
| private transient WriterThread _thread; |
| private boolean _warnedFull; |
| |
| public AsyncNCSARequestLog() |
| { |
| this(null,null); |
| } |
| |
| public AsyncNCSARequestLog(BlockingQueue<String> queue) |
| { |
| this(null,queue); |
| } |
| |
| public AsyncNCSARequestLog(String filename) |
| { |
| this(filename,null); |
| } |
| |
| public AsyncNCSARequestLog(String filename,BlockingQueue<String> queue) |
| { |
| super(filename); |
| if (queue==null) |
| queue=new BlockingArrayQueue<String>(1024); |
| _queue=queue; |
| } |
| |
| private class WriterThread extends Thread |
| { |
| WriterThread() |
| { |
| setName("AsyncNCSARequestLog@"+Integer.toString(AsyncNCSARequestLog.this.hashCode(),16)); |
| } |
| |
| @Override |
| public void run() |
| { |
| while (isRunning()) |
| { |
| try |
| { |
| String log = _queue.poll(10,TimeUnit.SECONDS); |
| if (log!=null) |
| AsyncNCSARequestLog.super.write(log); |
| |
| while(!_queue.isEmpty()) |
| { |
| log=_queue.poll(); |
| if (log!=null) |
| AsyncNCSARequestLog.super.write(log); |
| } |
| } |
| catch (IOException e) |
| { |
| LOG.warn(e); |
| } |
| catch (InterruptedException e) |
| { |
| LOG.ignore(e); |
| } |
| } |
| } |
| } |
| |
| @Override |
| protected synchronized void doStart() throws Exception |
| { |
| super.doStart(); |
| _thread = new WriterThread(); |
| _thread.start(); |
| } |
| |
| @Override |
| protected void doStop() throws Exception |
| { |
| _thread.interrupt(); |
| _thread.join(); |
| super.doStop(); |
| _thread=null; |
| } |
| |
| @Override |
| protected void write(String log) throws IOException |
| { |
| if (!_queue.offer(log)) |
| { |
| if (_warnedFull) |
| LOG.warn("Log Queue overflow"); |
| _warnedFull=true; |
| } |
| } |
| |
| } |