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org.eclipse.jetty.client.http.HttpSenderOverHTTP Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2016 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.client.http;
import java.nio.ByteBuffer;
import org.eclipse.jetty.client.HttpClient;
import org.eclipse.jetty.client.HttpContent;
import org.eclipse.jetty.client.HttpExchange;
import org.eclipse.jetty.client.HttpRequestException;
import org.eclipse.jetty.client.HttpSender;
import org.eclipse.jetty.client.api.ContentProvider;
import org.eclipse.jetty.client.api.Request;
import org.eclipse.jetty.http.HttpGenerator;
import org.eclipse.jetty.http.HttpURI;
import org.eclipse.jetty.http.MetaData;
import org.eclipse.jetty.io.ByteBufferPool;
import org.eclipse.jetty.io.EndPoint;
import org.eclipse.jetty.util.Callback;
import org.eclipse.jetty.util.IteratingCallback;
public class HttpSenderOverHTTP extends HttpSender
{
private final HttpGenerator generator = new HttpGenerator();
public HttpSenderOverHTTP(HttpChannelOverHTTP channel)
{
super(channel);
}
@Override
public HttpChannelOverHTTP getHttpChannel()
{
return (HttpChannelOverHTTP)super.getHttpChannel();
}
@Override
protected void sendHeaders(HttpExchange exchange, HttpContent content, Callback callback)
{
try
{
new HeadersCallback(exchange, content, callback).iterate();
}
catch (Throwable x)
{
if (LOG.isDebugEnabled())
LOG.debug(x);
callback.failed(x);
}
}
@Override
protected void sendContent(HttpExchange exchange, HttpContent content, Callback callback)
{
try
{
HttpClient client = getHttpChannel().getHttpDestination().getHttpClient();
ByteBufferPool bufferPool = client.getByteBufferPool();
ByteBuffer chunk = null;
while (true)
{
ByteBuffer contentBuffer = content.getByteBuffer();
boolean lastContent = content.isLast();
HttpGenerator.Result result = generator.generateRequest(null, null, chunk, contentBuffer, lastContent);
if (LOG.isDebugEnabled())
LOG.debug("Generated content ({} bytes) - {}/{}",
contentBuffer == null ? -1 : contentBuffer.remaining(),
result, generator);
switch (result)
{
case NEED_CHUNK:
{
chunk = bufferPool.acquire(HttpGenerator.CHUNK_SIZE, false);
break;
}
case FLUSH:
{
EndPoint endPoint = getHttpChannel().getHttpConnection().getEndPoint();
if (chunk != null)
endPoint.write(new ByteBufferRecyclerCallback(callback, bufferPool, chunk), chunk, contentBuffer);
else
endPoint.write(callback, contentBuffer);
return;
}
case SHUTDOWN_OUT:
{
shutdownOutput();
break;
}
case CONTINUE:
{
if (lastContent)
break;
callback.succeeded();
return;
}
case DONE:
{
callback.succeeded();
return;
}
default:
{
throw new IllegalStateException(result.toString());
}
}
}
}
catch (Throwable x)
{
if (LOG.isDebugEnabled())
LOG.debug(x);
callback.failed(x);
}
}
@Override
protected void reset()
{
generator.reset();
super.reset();
}
@Override
protected void dispose()
{
generator.abort();
super.dispose();
shutdownOutput();
}
private void shutdownOutput()
{
if (LOG.isDebugEnabled())
LOG.debug("Request shutdown output {}", getHttpExchange().getRequest());
getHttpChannel().getHttpConnection().getEndPoint().shutdownOutput();
}
@Override
public String toString()
{
return String.format("%s[%s]", super.toString(), generator);
}
private class HeadersCallback extends IteratingCallback
{
private final HttpExchange exchange;
private final Callback callback;
private final MetaData.Request metaData;
private ByteBuffer headerBuffer;
private ByteBuffer chunkBuffer;
private ByteBuffer contentBuffer;
private boolean lastContent;
private boolean generated;
public HeadersCallback(HttpExchange exchange, HttpContent content, Callback callback)
{
super(false);
this.exchange = exchange;
this.callback = callback;
Request request = exchange.getRequest();
ContentProvider requestContent = request.getContent();
long contentLength = requestContent == null ? -1 : requestContent.getLength();
String path = request.getPath();
String query = request.getQuery();
if (query != null)
path += "?" + query;
metaData = new MetaData.Request(request.getMethod(), new HttpURI(path), request.getVersion(), request.getHeaders(), contentLength);
if (!expects100Continue(request))
{
content.advance();
contentBuffer = content.getByteBuffer();
lastContent = content.isLast();
}
}
@Override
protected Action process() throws Exception
{
HttpClient client = getHttpChannel().getHttpDestination().getHttpClient();
ByteBufferPool bufferPool = client.getByteBufferPool();
while (true)
{
HttpGenerator.Result result = generator.generateRequest(metaData, headerBuffer, chunkBuffer, contentBuffer, lastContent);
if (LOG.isDebugEnabled())
LOG.debug("Generated headers ({} bytes), chunk ({} bytes), content ({} bytes) - {}/{}",
headerBuffer == null ? -1 : headerBuffer.remaining(),
chunkBuffer == null ? -1 : chunkBuffer.remaining(),
contentBuffer == null ? -1 : contentBuffer.remaining(),
result, generator);
switch (result)
{
case NEED_HEADER:
{
headerBuffer = bufferPool.acquire(client.getRequestBufferSize(), false);
break;
}
case NEED_CHUNK:
{
chunkBuffer = bufferPool.acquire(HttpGenerator.CHUNK_SIZE, false);
break;
}
case FLUSH:
{
EndPoint endPoint = getHttpChannel().getHttpConnection().getEndPoint();
if (chunkBuffer == null)
{
if (contentBuffer == null)
endPoint.write(this, headerBuffer);
else
endPoint.write(this, headerBuffer, contentBuffer);
}
else
{
if (contentBuffer == null)
endPoint.write(this, headerBuffer, chunkBuffer);
else
endPoint.write(this, headerBuffer, chunkBuffer, contentBuffer);
}
generated = true;
return Action.SCHEDULED;
}
case SHUTDOWN_OUT:
{
shutdownOutput();
return Action.SUCCEEDED;
}
case CONTINUE:
{
if (generated)
return Action.SUCCEEDED;
break;
}
case DONE:
{
if (generated)
return Action.SUCCEEDED;
// The headers have already been generated by some
// other thread, perhaps by a concurrent abort().
throw new HttpRequestException("Could not generate headers", exchange.getRequest());
}
default:
{
throw new IllegalStateException(result.toString());
}
}
}
}
@Override
public void succeeded()
{
release();
super.succeeded();
}
@Override
public void failed(Throwable x)
{
release();
callback.failed(x);
super.failed(x);
}
@Override
protected void onCompleteSuccess()
{
super.onCompleteSuccess();
callback.succeeded();
}
private void release()
{
HttpClient client = getHttpChannel().getHttpDestination().getHttpClient();
ByteBufferPool bufferPool = client.getByteBufferPool();
bufferPool.release(headerBuffer);
headerBuffer = null;
if (chunkBuffer != null)
bufferPool.release(chunkBuffer);
chunkBuffer = null;
}
}
private class ByteBufferRecyclerCallback extends Callback.Nested
{
private final ByteBufferPool pool;
private final ByteBuffer[] buffers;
private ByteBufferRecyclerCallback(Callback callback, ByteBufferPool pool, ByteBuffer... buffers)
{
super(callback);
this.pool = pool;
this.buffers = buffers;
}
@Override
public void succeeded()
{
for (ByteBuffer buffer : buffers)
{
assert !buffer.hasRemaining();
pool.release(buffer);
}
super.succeeded();
}
@Override
public void failed(Throwable x)
{
for (ByteBuffer buffer : buffers)
pool.release(buffer);
super.failed(x);
}
}
}
