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/***************************************************************************
* Copyright (c) 2004 - 2007 Eike Stepper, Germany.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
**************************************************************************/
package org.eclipse.net4j.signal;
import org.eclipse.net4j.stream.BufferInputStream;
import org.eclipse.net4j.stream.BufferOutputStream;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import org.eclipse.internal.net4j.bundle.OM;
import java.io.EOFException;
import java.util.concurrent.TimeoutException;
/**
* @author Eike Stepper
*/
public abstract class Signal implements Runnable
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_SIGNAL, Signal.class);
private SignalProtocol protocol;
private int correlationID;
private BufferInputStream inputStream;
private BufferOutputStream outputStream;
protected Signal()
{
}
protected SignalProtocol getProtocol()
{
return protocol;
}
protected final int getCorrelationID()
{
return correlationID;
}
protected final BufferInputStream getInputStream()
{
return inputStream;
}
protected final BufferOutputStream getOutputStream()
{
return outputStream;
}
public final void run()
{
try
{
runSync();
}
catch (Exception ex)
{
OM.LOG.error(ex);
if (TRACER.isEnabled())
{
TRACER.trace(ex);
}
}
}
protected void runSync() throws Exception
{
try
{
execute(inputStream, outputStream);
}
catch (EOFException ex)
{
throw new TimeoutException("Timeout");
}
finally
{
getProtocol().stopSignal(this);
}
}
protected abstract short getSignalID();
protected abstract void execute(BufferInputStream in, BufferOutputStream out) throws Exception;
void setProtocol(SignalProtocol protocol)
{
this.protocol = protocol;
}
void setCorrelationID(int correlationID)
{
this.correlationID = correlationID;
}
void setInputStream(BufferInputStream inputStream)
{
this.inputStream = inputStream;
}
void setOutputStream(BufferOutputStream outputStream)
{
this.outputStream = outputStream;
}
}
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