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//
// ========================================================================
// Copyright (c) 1995-2013 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;
import java.io.IOException;
import org.eclipse.jetty.http.HttpFields;
import org.eclipse.jetty.io.Buffer;
/**
* An exchange that retains response status and response headers for later use.
*/
public class CachedExchange extends HttpExchange
{
private final HttpFields _responseFields;
private volatile int _responseStatus;
/**
* Creates a new CachedExchange.
*
* @param cacheHeaders true to cache response headers, false to not cache them
*/
public CachedExchange(boolean cacheHeaders)
{
_responseFields = cacheHeaders ? new HttpFields() : null;
}
public synchronized int getResponseStatus()
{
if (getStatus() < HttpExchange.STATUS_PARSING_HEADERS)
throw new IllegalStateException("Response not received yet");
return _responseStatus;
}
public synchronized HttpFields getResponseFields()
{
if (getStatus() < HttpExchange.STATUS_PARSING_CONTENT)
throw new IllegalStateException("Headers not completely received yet");
return _responseFields;
}
@Override
protected synchronized void onResponseStatus(Buffer version, int status, Buffer reason) throws IOException
{
_responseStatus = status;
super.onResponseStatus(version, status, reason);
}
@Override
protected synchronized void onResponseHeader(Buffer name, Buffer value) throws IOException
{
if (_responseFields != null)
{
_responseFields.add(name, value.asImmutableBuffer());
}
super.onResponseHeader(name, value);
}
}
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