org.eclipse.jetty.client.HttpChannel Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2018 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 org.eclipse.jetty.client.api.Result;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
public abstract class HttpChannel
{
protected static final Logger LOG = Log.getLogger(HttpChannel.class);
private final HttpDestination _destination;
private HttpExchange _exchange;
protected HttpChannel(HttpDestination destination)
{
this._destination = destination;
}
public HttpDestination getHttpDestination()
{
return _destination;
}
/**
* Associates the given {@code exchange} to this channel in order to be sent over the network.
* If the association is successful, the exchange can be sent. Otherwise, the channel must be
* disposed because whoever terminated the exchange did not do it - it did not have the channel yet.
*
* @param exchange the exchange to associate
* @return true if the association was successful, false otherwise
*/
public boolean associate(HttpExchange exchange)
{
boolean result = false;
boolean abort = true;
synchronized (this)
{
if (_exchange == null)
{
abort = false;
result = exchange.associate(this);
if (result)
_exchange = exchange;
}
}
if (abort)
exchange.getRequest().abort(new UnsupportedOperationException("Pipelined requests not supported"));
if (LOG.isDebugEnabled())
LOG.debug("{} associated {} to {}", exchange, result, this);
return result;
}
public boolean disassociate(HttpExchange exchange)
{
boolean result = false;
synchronized (this)
{
HttpExchange existing = _exchange;
_exchange = null;
if (existing == exchange)
{
existing.disassociate(this);
result = true;
}
}
if (LOG.isDebugEnabled())
LOG.debug("{} disassociated {} from {}", exchange, result, this);
return result;
}
public HttpExchange getHttpExchange()
{
synchronized (this)
{
return _exchange;
}
}
protected abstract HttpSender getHttpSender();
protected abstract HttpReceiver getHttpReceiver();
public abstract void send();
public abstract void release();
public void proceed(HttpExchange exchange, Throwable failure)
{
getHttpSender().proceed(exchange, failure);
}
public boolean abort(HttpExchange exchange, Throwable requestFailure, Throwable responseFailure)
{
boolean requestAborted = false;
if (requestFailure != null)
requestAborted = getHttpSender().abort(exchange, requestFailure);
boolean responseAborted = false;
if (responseFailure != null)
responseAborted = abortResponse(exchange, responseFailure);
return requestAborted || responseAborted;
}
public boolean abortResponse(HttpExchange exchange, Throwable failure)
{
return getHttpReceiver().abort(exchange, failure);
}
public void exchangeTerminated(HttpExchange exchange, Result result)
{
disassociate(exchange);
}
@Override
public String toString()
{
return String.format("%s@%x(exchange=%s)", getClass().getSimpleName(), hashCode(), getHttpExchange());
}
}