//
// ========================================================================
// 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.websocket.common.test;
import java.nio.ByteBuffer;
import java.util.List;
import org.eclipse.jetty.io.ByteBufferPool;
import org.eclipse.jetty.io.MappedByteBufferPool;
import org.eclipse.jetty.util.BufferUtil;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.eclipse.jetty.websocket.api.WebSocketPolicy;
import org.eclipse.jetty.websocket.api.extensions.Frame;
import org.eclipse.jetty.websocket.common.Generator;
import org.eclipse.jetty.websocket.common.WebSocketFrame;
/**
* Convenience Generator.
*/
public class UnitGenerator extends Generator
{
private static final Logger LOG = Log.getLogger(UnitGenerator.class);
public static ByteBuffer generate(Frame frame)
{
return generate(new Frame[]
{ frame });
}
/**
* Generate All Frames into a single ByteBuffer.
* <p>
* This is highly inefficient and is not used in production! (This exists to make testing of the Generator easier)
*
* @param frames
* the frames to generate from
* @return the ByteBuffer representing all of the generated frames provided.
*/
public static ByteBuffer generate(Frame[] frames)
{
Generator generator = new UnitGenerator();
// Generate into single bytebuffer
int buflen = 0;
for (Frame f : frames)
{
buflen += f.getPayloadLength() + Generator.MAX_HEADER_LENGTH;
}
ByteBuffer completeBuf = ByteBuffer.allocate(buflen);
BufferUtil.clearToFill(completeBuf);
// Generate frames
for (Frame f : frames)
{
generator.generateWholeFrame(f,completeBuf);
}
BufferUtil.flipToFlush(completeBuf,0);
if (LOG.isDebugEnabled())
{
LOG.debug("generate({} frames) - {}",frames.length,BufferUtil.toDetailString(completeBuf));
}
return completeBuf;
}
/**
* Generate a single giant buffer of all provided frames Not appropriate for production code, but useful for testing.
*/
public static ByteBuffer generate(List<WebSocketFrame> frames)
{
// Create non-symmetrical mask (helps show mask bytes order issues)
byte[] MASK =
{ 0x11, 0x22, 0x33, 0x44 };
// the generator
Generator generator = new UnitGenerator();
// Generate into single bytebuffer
int buflen = 0;
for (Frame f : frames)
{
buflen += f.getPayloadLength() + Generator.MAX_HEADER_LENGTH;
}
ByteBuffer completeBuf = ByteBuffer.allocate(buflen);
BufferUtil.clearToFill(completeBuf);
// Generate frames
for (WebSocketFrame f : frames)
{
f.setMask(MASK); // make sure we have the test mask set
BufferUtil.put(generator.generateHeaderBytes(f),completeBuf);
ByteBuffer window = f.getPayload();
if (BufferUtil.hasContent(window))
{
BufferUtil.put(window,completeBuf);
}
}
BufferUtil.flipToFlush(completeBuf,0);
if (LOG.isDebugEnabled())
{
LOG.debug("generate({} frames) - {}",frames.size(),BufferUtil.toDetailString(completeBuf));
}
return completeBuf;
}
public UnitGenerator()
{
super(WebSocketPolicy.newServerPolicy(),new LeakTrackingBufferPool("UnitGenerator",new MappedByteBufferPool()));
}
public UnitGenerator(ByteBufferPool bufferPool)
{
super(WebSocketPolicy.newServerPolicy(),bufferPool);
}
}