/**
* Copyright (C) 2006, Laboratorio di Valutazione delle Prestazioni - Politecnico di Milano
* 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; either version 2 of the License, or
* (at your option) any later version.
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package jmt.engine.NodeSections;
import jmt.engine.QueueNet.Job;
import jmt.engine.QueueNet.JobInfo;
import jmt.engine.QueueNet.JobInfoList;
import jmt.engine.QueueNet.NetEvent;
import jmt.engine.QueueNet.NetMessage;
import jmt.engine.QueueNet.NetNode;
/**
* This class implements a sink: every incoming job is destroyed.
* @author Francesco Radaelli
*/
public class JobSink extends InputSection {
private JobInfoList jobsList_node;
/**
* Default Constructor creates the JobSink that can be used only as Input Section
*/
public JobSink() {
super();
//NEW
//@author Stefano Omini
//log = NetSystem.getLog();
//end NEW
}
//NEW
//@author Stefano Omini
@Override
protected void nodeLinked(NetNode node) {
jobsList_node = this.getOwnerNode().getJobInfoList();
}
//end NEW
/** This method implements a sink.
* It eats all incoming jobs.
* @param message message to be processed.
* @throws jmt.common.exception.NetException
*/
@Override
protected int process(NetMessage message) throws jmt.common.exception.NetException {
switch (message.getEvent()) {
case NetEvent.EVENT_START:
//nothing to do
return MSG_PROCESSED;
case NetEvent.EVENT_JOB:
//case EVENT_JOB
//an ack message is sent to the source of the received message.
//then the job is killed
Job job = message.getJob();
send(NetEvent.EVENT_ACK, job, 0.0, message.getSourceSection(), message.getSource());
//NEW
//@author Stefano Omini
//BUG FIXED!
//jobSink does not add JobInfo objects to its own list, so
//there's no need to remove them
//the owner node, on the contrary, adds them when the job message is received
//before the jobinfo objects weren't removed (often causing outOfMemory errors!!!)
if (jobsList_node == null) {
jobsList_node = this.getOwnerNode().getJobInfoList();
}
JobInfo jobInfo_node = jobsList_node.lookFor(job);
if (jobInfo_node != null) {
//removes job from the jobInfoList of the node
jobsList_node.removeAfterDrop(jobInfo_node);
}
//end NEW
//log.write(NetLog.LEVEL_DEBUG, job, this, NetLog.JOB_DIED);
// Signals to global jobInfoList removed job - Bertoli Marco
this.getOwnerNode().getQueueNet().getJobInfoList().removeJob(job);
return MSG_PROCESSED;
default:
return MSG_NOT_PROCESSED;
}
}
}