| // |
| // ======================================================================== |
| // 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; |
| |
| 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; |
| } |
| |
| /** |
| * <p>Associates the given {@code exchange} to this channel in order to be sent over the network.</p> |
| * <p>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.</p> |
| * |
| * @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()); |
| } |
| } |