/*
* JacORB - a free Java ORB
*
* Copyright (C) 1999-2014 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.notification.servant;
import org.jacorb.notification.conf.Default;
import org.omg.CosEventComm.Disconnected;
import java.util.concurrent.Semaphore;
import java.util.concurrent.TimeUnit;
public class PullMessagesOperation
{
/**
* Total number of pull-Operations
*/
private int pullCounter_;
/**
* Total time spent within pull-Operations
*/
private long timeSpentInPull_;
/**
* Total number of successful pull-Operations
*/
private int successfulPullCounter_;
private final MessageSupplierDelegate delegate_;
private final Semaphore pullSync_ = new Semaphore(Default.DEFAULT_CONCURRENT_PULL_OPERATIONS_ALLOWED);
public PullMessagesOperation(MessageSupplierDelegate delegate)
{
delegate_ = delegate;
}
public void runPull() throws Disconnected
{
if (!delegate_.getConnected())
{
throw new Disconnected();
}
if (delegate_.isSuspended())
{
return;
}
runPullInternal();
}
private void runPullInternal() throws Disconnected
{
try
{
boolean _acquired = pullSync_.tryAcquire(1000, TimeUnit.MILLISECONDS);
if (_acquired)
{
final MessageSupplierDelegate.PullResult _data;
final long _now = System.currentTimeMillis();
try
{
_data = delegate_.pullMessages();
} finally
{
pullSync_.release();
timeSpentInPull_ += (System.currentTimeMillis() - _now);
}
++pullCounter_;
if (_data.success_)
{
++successfulPullCounter_;
delegate_.queueMessages(_data);
}
}
} catch (InterruptedException e)
{
// ignored
// TODO log
}
}
public int getPullCounter()
{
return pullCounter_;
}
public int getSuccessfulPullCounter()
{
return successfulPullCounter_;
}
public long getTimeSpentInPull()
{
return timeSpentInPull_;
}
}