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// ========================================================================
// Copyright 2011-2012 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.websocket.api.io;
import java.io.IOException;
import java.util.concurrent.ExecutionException;
import org.eclipse.jetty.util.FutureCallback;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.eclipse.jetty.websocket.api.WebSocketConnection;
import org.eclipse.jetty.websocket.io.WebSocketSession;
/**
* For working with the {@link WebSocketConnection} in a blocking technique.
* <p>
* This is an end-user accessible class.
*/
public class WebSocketBlockingConnection
{
private static class Blocker extends FutureCallback<String>
{
@Override
public void completed(String context)
{
LOG.debug("completed({})",context);
super.completed(context);
}
@Override
public void failed(String context, Throwable cause)
{
LOG.debug("failed({},{})",context,cause);
super.failed(context,cause);
}
@Override
public String toString()
{
return String.format("%s[%s]",Blocker.class.getSimpleName(),super.toString());
}
}
private static final Logger LOG = Log.getLogger(WebSocketBlockingConnection.class);
private static final String CONTEXT_BINARY = "BLOCKING_BINARY";
private static final String CONTEXT_TEXT = "BLOCKING_TEXT";
private final WebSocketSession conn;
public WebSocketBlockingConnection(WebSocketConnection conn)
{
if (conn instanceof WebSocketSession)
{
this.conn = (WebSocketSession)conn;
}
else
{
throw new IllegalArgumentException("WebSocketConnection must implement internal WebSocketSession interface");
}
}
/**
* Send a binary message.
* <p>
* Basic usage, results in a blocking write.
*/
public void write(byte[] data, int offset, int length) throws IOException
{
try
{
Blocker blocker = new Blocker();
conn.write(CONTEXT_BINARY,blocker,data,offset,length);
blocker.get(); // block till finished
}
catch (InterruptedException e)
{
throw new IOException("Blocking write failed",e);
}
catch (ExecutionException e)
{
FutureCallback.rethrow(e);
}
}
/**
* Send text message.
* <p>
* Basic usage, results in a blocking write.
*/
public void write(String message) throws IOException
{
try
{
Blocker blocker = new Blocker();
conn.write(CONTEXT_TEXT,blocker,message);
blocker.get(); // block till finished
}
catch (InterruptedException e)
{
throw new IOException("Blocking write failed",e);
}
catch (ExecutionException e)
{
FutureCallback.rethrow(e);
}
}
}
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