org.apache.hbase.thirdparty.org.eclipse.jetty.server.resource.HttpContentRangeWriter Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2021 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 org.apache.hbase.thirdparty.org.eclipse.jetty.server.resource;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.ReadableByteChannel;
import java.nio.channels.SeekableByteChannel;
import java.util.Objects;
import org.apache.hbase.thirdparty.org.eclipse.jetty.http.HttpContent;
import org.apache.hbase.thirdparty.org.eclipse.jetty.util.log.Log;
import org.apache.hbase.thirdparty.org.eclipse.jetty.util.log.Logger;
/**
* Range Writer selection for HttpContent
*/
public class HttpContentRangeWriter
{
private static final Logger LOG = Log.getLogger(HttpContentRangeWriter.class);
/**
* Obtain a new RangeWriter for the supplied HttpContent.
*
* @param content the HttpContent to base RangeWriter on
* @return the RangeWriter best suited for the supplied HttpContent
*/
public static RangeWriter newRangeWriter(HttpContent content)
{
Objects.requireNonNull(content, "HttpContent");
// Try direct buffer
ByteBuffer buffer = content.getDirectBuffer();
if (buffer == null)
{
buffer = content.getIndirectBuffer();
}
if (buffer != null)
{
return new ByteBufferRangeWriter(buffer);
}
try
{
ReadableByteChannel channel = content.getReadableByteChannel();
if (channel != null)
{
if (channel instanceof SeekableByteChannel)
{
SeekableByteChannel seekableByteChannel = (SeekableByteChannel)channel;
return new SeekableByteChannelRangeWriter(seekableByteChannel, () -> (SeekableByteChannel)content.getReadableByteChannel());
}
if (LOG.isDebugEnabled())
LOG.debug("Skipping non-SeekableByteChannel option " + channel + " from content " + content);
channel.close();
}
}
catch (IOException e)
{
if (LOG.isDebugEnabled())
LOG.debug("Skipping ReadableByteChannel option", e);
}
return new InputStreamRangeWriter(() -> content.getInputStream());
}
}