/**
* SAMOA - PROTOCOL FRAMEWORK
* Copyright (C) 2005 Olivier Rütti (EPFL) (olivier.rutti@a3.epfl.ch)
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package seqSamoa.protocols.order;
import java.io.OutputStream;
import java.util.Iterator;
import java.util.LinkedList;
import seqSamoa.Message;
import seqSamoa.ProtocolModule;
import seqSamoa.ProtocolStack;
import seqSamoa.ServiceCallOrResponse;
import seqSamoa.Service.Listener;
import seqSamoa.exceptions.AlreadyExistingProtocolModuleException;
import seqSamoa.services.order.FIFO;
import seqSamoa.services.order.FIFOCallParameters;
import seqSamoa.services.order.FIFOResponseParameters;
import seqSamoa.services.rpt2pt.RPT2PT;
import seqSamoa.services.rpt2pt.RPT2PTCallParameters;
import seqSamoa.services.rpt2pt.RPT2PTResponseParameters;
import uka.transport.Transportable;
import framework.Constants;
import framework.GroupCommEventArgs;
import framework.GroupCommException;
import framework.GroupCommMessage;
import framework.PID;
import framework.libraries.Trigger;
import framework.libraries.serialization.TBoolean;
import framework.libraries.serialization.TSet;
import groupcomm.common.order.FIFOImpl;
public class ProtocolFIFOOrder extends ProtocolModule implements Trigger {
final static int MAX_PROCESSES = 7;
final static int MAX_MESSAGES = 45;
private FIFO fifo;
// Services required
private RPT2PT rpt2pt;
protected FIFOImpl handlers;
// The Executer
// It start a FIFOOrder
protected FIFO.Executer FIFOExecuter;
// The Listeners
// It listen for rpt2pt messages
protected RPT2PT.Listener rpt2ptListener;
/**
* Constructor. <br>
*
* @param name
* Name of the layer
* @param stack
* The stack in which the module will be
*/
public ProtocolFIFOOrder(String name, ProtocolStack stack,
FIFO fifo, RPT2PT rpt2pt) throws AlreadyExistingProtocolModuleException {
super(name, stack);
handlers = new FIFOImpl(this);
this.fifo = fifo;
this.rpt2pt = rpt2pt;
LinkedList<ServiceCallOrResponse> initiatedFIFO = new LinkedList<ServiceCallOrResponse>();
for (int i=0; i<MAX_PROCESSES; i++)
initiatedFIFO.add(ServiceCallOrResponse.createServiceCallOrResponse(rpt2pt, true));
initiatedFIFO.add(ServiceCallOrResponse.createServiceCallOrResponse(fifo, false));
FIFOExecuter = fifo.new Executer(this, initiatedFIFO) {
public void evaluate(FIFOCallParameters params,
Message dmessage) {
synchronized (this.parent) {
GroupCommEventArgs ga = new GroupCommEventArgs();
ga.addLast(dmessage.toGroupCommMessage());
ga.addLast(params.pids);
try {
handlers.handleFIFOSend(ga);
} catch (GroupCommException ex) {
throw new RuntimeException(
"ProtocolFIFOOrder: Executer: "
+ ex.getMessage());
}
}
}
};
LinkedList<ServiceCallOrResponse> initiatedRpt2pt = new LinkedList<ServiceCallOrResponse>();
for (int i=0; i<MAX_MESSAGES; i++)
initiatedRpt2pt.add(ServiceCallOrResponse.createServiceCallOrResponse(fifo, false));
rpt2ptListener = rpt2pt.new Listener(this, initiatedRpt2pt) {
public void evaluate(RPT2PTResponseParameters infos,
Transportable message) {
synchronized (this.parent) {
GroupCommEventArgs ga = new GroupCommEventArgs();
ga.addLast(message);
ga.addLast(infos.pid);
try {
handlers.handlePt2PtDeliver(ga);
} catch (Exception ex) {
ex.printStackTrace();
throw new RuntimeException("ProtocolFIFOOrder: "
+ "rpt2ptListener: " + ex.getMessage());
}
}
}
};
}
synchronized public void init() {
try {
GroupCommEventArgs initev = new GroupCommEventArgs();
initev.addLast(this.stack.getGroup());
handlers.handleInit(initev);
} catch (Exception ex) {
throw new RuntimeException("ProtocolFIFOOrder: handleInit: "
+ ex.getMessage());
}
super.init();
}
synchronized public void dump(OutputStream stream) {
handlers.dump(stream);
}
/**
* Manage the triggering of the events
*/
@SuppressWarnings("unchecked")
public void trigger(int type, GroupCommEventArgs l) {
switch (type) {
case Constants.JOINREMOVELIST:
TSet start = (TSet) l.remove(0);
TSet stop = (TSet) l.remove(0);
Iterator itStart = start.iterator();
while (itStart.hasNext()) {
RPT2PTCallParameters jparams = new RPT2PTCallParameters(
(PID) itStart.next(), new TBoolean(true), new TBoolean(
false));
rpt2pt.call(jparams, null);
}
Iterator itStop = stop.iterator();
while (itStop.hasNext()) {
RPT2PTCallParameters jparams = new RPT2PTCallParameters(
(PID) itStop.next(), new TBoolean(false), new TBoolean(
false));
rpt2pt.call(jparams, null);
}
break;
case Constants.PT2PTSEND:
Transportable message = l.remove(0);
PID pid = (PID) l.remove(0);
TBoolean promisc = (TBoolean) l.remove(0);
RPT2PTCallParameters rparams = new RPT2PTCallParameters(pid,
promisc, new TBoolean(true));
rpt2pt.call(rparams, new Message(message,
(Listener) rpt2ptListener));
break;
case Constants.FIFODELIVER:
GroupCommMessage gm = (GroupCommMessage) l.remove(0);
Message fmessage = new Message(gm);
PID source = (PID) l.remove(0);
FIFOResponseParameters fparams = new FIFOResponseParameters(source);
fifo.response(fparams, fmessage);
break;
default:
throw new RuntimeException("ProtocolFIFOOrder: trigger: "
+ "Unexpected event type");
}
}
}