/**
Copyright (C) SYSTAP, LLC DBA Blazegraph 2015. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package com.bigdata.rdf.sail.webapp.client;
import java.util.concurrent.atomic.AtomicInteger;
import org.eclipse.jetty.client.HttpClient;
import org.eclipse.jetty.util.ssl.SslContextFactory;
import com.bigdata.util.StackInfoReport;
/**
* A {@link HttpClient} that supports the {@link AutoCloseable} protocol and
* which will be transparently closed by the
* {@link RemoteRepositoryManager} if
* {@link RemoteRepositoryManager#close()} is invoked.
* <p>
* Note: Do NOT use an instance of this class if you wish to share the same
* {@link HttpClient} across multiple {@link RemoteRepositoryManager}
* instances.
*
* @author Martyn Cutcher
*/
public class AutoCloseHttpClient extends HttpClient implements AutoCloseable {
// private static final transient Logger log = Logger
// .getLogger(AutoCloseHttpClient.class);
/**
* The #of running instances of the {@link AutoCloseHttpClient} - debug only.
*/
private final static AtomicInteger s_active = new AtomicInteger();
/**
* The stack trace of the caller when the {@link AutoCloseHttpClient} is
* stopped.
*/
@SuppressWarnings("unused")
private volatile StackInfoReport m_stopped = null;
public AutoCloseHttpClient(final SslContextFactory sslFactory) {
super(sslFactory);
}
@Override
protected void doStart() throws Exception {
super.doStart();
s_active.incrementAndGet();
}
@Override
protected void doStop() throws Exception {
super.doStop();
// for debug
m_stopped = new StackInfoReport();
s_active.decrementAndGet();
}
/**
* {@inheritDoc}
* <p>
* Called from {@link RemoteRepositoryManager} when it is closed.
*
* @throws Exception
*/
@Override
public void close() throws Exception {
if (isStopping() || isStopped())
return;
stop();
}
}