com.signalfx.shaded.jetty.websocket.common.extensions.compress.ByteAccumulator Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2022 Mort Bay Consulting Pty Ltd and others.
// ------------------------------------------------------------------------
// 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 com.signalfx.shaded.jetty.websocket.common.extensions.compress;
import java.nio.ByteBuffer;
import com.signalfx.shaded.jetty.io.ByteBufferAccumulator;
import com.signalfx.shaded.jetty.io.ByteBufferPool;
import com.signalfx.shaded.jetty.util.BufferUtil;
import com.signalfx.shaded.jetty.websocket.api.MessageTooLargeException;
/**
* @deprecated use {@link ByteBufferAccumulator} instead.
*/
@Deprecated
public class ByteAccumulator implements AutoCloseable
{
private static final int MIN_SPACE = 8;
private final ByteBufferAccumulator accumulator;
private final int maxSize;
private int length = 0;
public ByteAccumulator(int maxOverallBufferSize)
{
this(maxOverallBufferSize, null);
}
public ByteAccumulator(int maxOverallBufferSize, ByteBufferPool byteBufferPool)
{
this.maxSize = maxOverallBufferSize;
this.accumulator = new ByteBufferAccumulator(byteBufferPool, false);
}
public int getLength()
{
return length;
}
public ByteBuffer ensureBuffer(int minAllocationSize)
{
return accumulator.ensureBuffer(MIN_SPACE, minAllocationSize);
}
public void addLength(int read)
{
length += read;
if (length > maxSize)
{
String err = String.format("Resulting message size [%d] is too large for configured max of [%d]", length, maxSize);
throw new MessageTooLargeException(err);
}
}
public void copyChunk(byte[] buf, int offset, int length)
{
copyChunk(BufferUtil.toBuffer(buf, offset, length));
}
public void copyChunk(ByteBuffer buffer)
{
int remaining = buffer.remaining();
if (length + remaining > maxSize)
{
String err = String.format("Resulting message size [%d] is too large for configured max of [%d]", length + remaining, maxSize);
throw new MessageTooLargeException(err);
}
length += remaining;
accumulator.copyBuffer(buffer);
}
public void transferTo(ByteBuffer buffer)
{
// For some reason this method expects the buffer in fill mode but returns a buffer in flush mode.
BufferUtil.flipToFlush(buffer, 0);
int availableSpace = BufferUtil.space(buffer);
if (availableSpace < length)
{
String err = String.format("Not enough space in ByteBuffer remaining [%d] for accumulated buffers length [%d]", availableSpace, length);
throw new IllegalArgumentException(err);
}
accumulator.writeTo(buffer);
close();
}
@Override
public void close()
{
accumulator.close();
}
}