/*
* JacORB - a free Java ORB
*
* Copyright (C) 1997-2014 Gerald Brose / The JacORB Team.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.jacorb.orb.giop;
import org.jacorb.config.Configuration;
import org.jacorb.config.ConfigurationException;
import org.omg.CORBA.portable.RemarshalException;
/**
* Connections deliver replies to instances of this class.
* The mechanism by which the ORB can retrieve the replies is
* implemented in subclasses.
*
* @author Nicolas Noffke
*/
public abstract class ReplyPlaceholder
{
protected final Object lock = new Object();
protected boolean ready = false;
protected boolean communicationException = false;
protected boolean remarshalException = false;
protected boolean timeoutException = false;
protected MessageInputStream in = null;
protected int timeout ;
public void configure(Configuration configuration) throws ConfigurationException
{
timeout = configuration.getAttributeAsInteger("jacorb.connection.client.pending_reply_timeout", 0);
}
public void replyReceived( MessageInputStream in )
{
synchronized(lock)
{
if( ! timeoutException )
{
this.in = in;
ready = true;
lock.notifyAll();
}
}
}
public void cancel()
{
synchronized(lock)
{
if( in == null )
{
communicationException = true;
ready = true;
lock.notify();
}
}
}
public void retry()
{
synchronized(lock)
{
remarshalException = true;
ready = true;
lock.notify();
}
}
/**
* Non-public implementation of the blocking method that
* returns a reply when it becomes available. Subclasses
* should specify a different method, under a different
* name, that does any specific processing of the reply before
* returning it to the caller.
*/
protected MessageInputStream getInputStream(boolean hasTimeoutPolicy)
throws RemarshalException
{
final boolean _shouldUseTimeout = !hasTimeoutPolicy && timeout > 0;
final long _maxWait = _shouldUseTimeout ? System.currentTimeMillis() + timeout : Long.MAX_VALUE;
final long _timeout = _shouldUseTimeout ? timeout : 0;
synchronized(lock)
{
while(!ready && System.currentTimeMillis() < _maxWait)
{
try
{
lock.wait( _timeout );
}
catch( InterruptedException e )
{
// ignored
}
}
if (!ready && _shouldUseTimeout)
{
timeoutException = true;
}
if( remarshalException )
{
throw new org.omg.CORBA.portable.RemarshalException();
}
if( communicationException )
{
throw new org.omg.CORBA.COMM_FAILURE(
0,
org.omg.CORBA.CompletionStatus.COMPLETED_MAYBE );
}
if( timeoutException )
{
throw new org.omg.CORBA.TIMEOUT ("client timeout reached");
}
return in;
}
}
}