/
HttpConnectionOverHTTP2.java
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/
HttpConnectionOverHTTP2.java
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//
// ========================================================================
// 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.eclipse.jetty.http2.client.http;
import java.nio.channels.AsynchronousCloseException;
import java.util.Iterator;
import java.util.Queue;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import org.eclipse.jetty.client.ConnectionPool;
import org.eclipse.jetty.client.HttpChannel;
import org.eclipse.jetty.client.HttpConnection;
import org.eclipse.jetty.client.HttpDestination;
import org.eclipse.jetty.client.HttpExchange;
import org.eclipse.jetty.client.HttpRequest;
import org.eclipse.jetty.client.SendFailure;
import org.eclipse.jetty.http.HttpVersion;
import org.eclipse.jetty.http2.ErrorCode;
import org.eclipse.jetty.http2.api.Session;
import org.eclipse.jetty.util.Callback;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.eclipse.jetty.util.thread.Sweeper;
public class HttpConnectionOverHTTP2 extends HttpConnection implements Sweeper.Sweepable, ConnectionPool.Multiplexable
{
private static final Logger LOG = Log.getLogger(HttpConnection.class);
private final Set<HttpChannel> activeChannels = ConcurrentHashMap.newKeySet();
private final Queue<HttpChannelOverHTTP2> idleChannels = new ConcurrentLinkedQueue<>();
private final AtomicBoolean closed = new AtomicBoolean();
private final AtomicInteger sweeps = new AtomicInteger();
private final Session session;
private boolean recycleHttpChannels = true;
private int maxMultiplex = 1;
public HttpConnectionOverHTTP2(HttpDestination destination, Session session)
{
super(destination);
this.session = session;
}
public Session getSession()
{
return session;
}
public boolean isRecycleHttpChannels()
{
return recycleHttpChannels;
}
public void setRecycleHttpChannels(boolean recycleHttpChannels)
{
this.recycleHttpChannels = recycleHttpChannels;
}
public int getMaxMultiplex()
{
return maxMultiplex;
}
public void setMaxMultiplex(int maxMultiplex)
{
this.maxMultiplex = maxMultiplex;
}
@Override
protected Iterator<HttpChannel> getHttpChannels()
{
return activeChannels.iterator();
}
@Override
protected SendFailure send(HttpExchange exchange)
{
HttpRequest request = exchange.getRequest();
request.version(HttpVersion.HTTP_2);
normalizeRequest(request);
// One connection maps to N channels, so one channel for each exchange.
HttpChannelOverHTTP2 channel = acquireHttpChannel();
activeChannels.add(channel);
return send(channel, exchange);
}
protected HttpChannelOverHTTP2 acquireHttpChannel()
{
HttpChannelOverHTTP2 channel = idleChannels.poll();
if (channel == null)
channel = newHttpChannel();
return channel;
}
protected HttpChannelOverHTTP2 newHttpChannel()
{
return new HttpChannelOverHTTP2(getHttpDestination(), this, getSession());
}
protected boolean release(HttpChannelOverHTTP2 channel)
{
if (LOG.isDebugEnabled())
LOG.debug("Released {}", channel);
if (activeChannels.remove(channel))
{
// Recycle only non-failed channels.
if (channel.isFailed())
channel.destroy();
else if (isRecycleHttpChannels())
idleChannels.offer(channel);
return true;
}
else
{
channel.destroy();
return false;
}
}
@Override
public boolean onIdleTimeout(long idleTimeout)
{
boolean close = super.onIdleTimeout(idleTimeout);
if (close)
close(new TimeoutException("idle_timeout"));
return false;
}
@Override
public void close()
{
close(new AsynchronousCloseException());
destroy();
}
protected void close(Throwable failure)
{
if (closed.compareAndSet(false, true))
{
getHttpDestination().remove(this);
abort(failure);
session.close(ErrorCode.NO_ERROR.code, failure.getMessage(), Callback.NOOP);
HttpChannel channel = idleChannels.poll();
while (channel != null)
{
channel.destroy();
channel = idleChannels.poll();
}
}
}
@Override
public boolean isClosed()
{
return closed.get();
}
private void abort(Throwable failure)
{
for (HttpChannel channel : activeChannels)
{
HttpExchange exchange = channel.getHttpExchange();
if (exchange != null)
exchange.getRequest().abort(failure);
}
activeChannels.clear();
HttpChannel channel = idleChannels.poll();
while (channel != null)
{
channel.destroy();
channel = idleChannels.poll();
}
}
@Override
public boolean sweep()
{
if (!isClosed())
return false;
return sweeps.incrementAndGet() >= 4;
}
@Override
public String toString()
{
return String.format("%s@%x(closed=%b)[%s]",
getClass().getSimpleName(),
hashCode(),
isClosed(),
session);
}
}