/**
* 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.api;
import java.util.LinkedList;
import seqSamoa.Callback;
import seqSamoa.Message;
import seqSamoa.ProtocolStack;
import seqSamoa.SamoaFlowControl;
import seqSamoa.SamoaScheduler;
import seqSamoa.Service;
import seqSamoa.ServiceCallOrResponse;
import seqSamoa.exceptions.AlreadyExistingProtocolModuleException;
import seqSamoa.exceptions.AlreadyExistingServiceException;
import seqSamoa.protocols.abcast.ProtocolDynAbcast;
import seqSamoa.protocols.consensus.ProtocolConsensus;
import seqSamoa.protocols.fd.ProtocolPing;
import seqSamoa.protocols.gmp.ProtocolGmp;
import seqSamoa.protocols.monitoring.ProtocolSimpleMonitoring;
import seqSamoa.services.abcast.DynAbcast;
import seqSamoa.services.abcast.DynAbcastCallParameters;
import seqSamoa.services.abcast.DynAbcastResponseParameters;
import seqSamoa.services.consensus.Consensus;
import seqSamoa.services.fd.FD;
import seqSamoa.services.gms.ManageView;
import seqSamoa.services.gms.ManageViewCallParameters;
import seqSamoa.services.gms.ManageViewResponseParameters;
import seqSamoa.services.udp.UDPCallParameters;
import uka.transport.Transportable;
import framework.Constants;
import framework.PID;
import framework.libraries.serialization.TBoolean;
import framework.libraries.serialization.TInteger;
import framework.libraries.serialization.TList;
/**
* A protocol stack that implements atomic broadcast
* in a dynamic group for a crash-stop model.
*/
public class ApiSamoaDynAbcastStack extends ProtocolStack {
// The different microprotocol
ProtocolPing pFD;
ProtocolConsensus pConsensus;
ProtocolDynAbcast pDynAbcast;
ProtocolGmp pGmp;
ProtocolSimpleMonitoring pMonitoring;
// The different services
FD fd;
Consensus consensus;
DynAbcast dynAbcast;
ManageView manageView;
// The Listeners
// It listen for DynABcast message
protected DynAbcast.Listener dynAbcastListener;
// It listen for view change
protected ManageView.Listener manageViewListener;
/**
* Constructor.
*
* @param myself
* the Process ID of the stack (should be unique)
* @param processes
* the list of processes that run the same stack
* @param scheduler
* the scheduler that manages executions in the stack
* @param fc
* the flow control dedicated this stack
* @param callback
* the interface that gets the responses of this stack
* @param logFile
* name of the file where to log the infos
*/
public ApiSamoaDynAbcastStack(PID myself, TList processes,
SamoaScheduler scheduler, SamoaFlowControl fc,
Callback callback, String logFile) {
super(myself, processes, scheduler, fc, callback, logFile,
new String("groupcomm"), true, true);
// SERVICE CREATION
try {
fd = new FD("fd", this);
consensus = new Consensus("consensus", this);
dynAbcast = new DynAbcast("dynAbcast", this);
manageView = new ManageView("manageView", this);
} catch (AlreadyExistingServiceException aep) {
throw new RuntimeException(
"Should not be possible! Bug in conception.");
}
dynAbcastListener = dynAbcast.new Listener(this, new LinkedList<ServiceCallOrResponse>()) {
synchronized public void evaluate(
DynAbcastResponseParameters infos, Transportable message) {
this.parent.getStack().getCallback().serviceCallback(infos, message);
}
};
manageViewListener = manageView.new Listener(this, new LinkedList<ServiceCallOrResponse>()) {
synchronized public void evaluate(
ManageViewResponseParameters infos, Transportable message) {
this.parent.getStack().getCallback().serviceCallback(infos, message);
this.parent.getStack().setGroup(infos.view);
}
};
// Protocol Instanciation
try {
pFD = new ProtocolPing(
new String("FD"),
this,
1000,
3,
fd,
(Service<? extends UDPCallParameters, ? extends Object>) udp);
pConsensus = new ProtocolConsensus(new String("Consensus"), this,
consensus, fd, rpt2pt);
pDynAbcast = new ProtocolDynAbcast(new String("DynAbcast"), this,
dynAbcast, consensus, rpt2pt);
pGmp = new ProtocolGmp(new String("Gmp"), this, manageView,
dynAbcast, rpt2pt);
pMonitoring = new ProtocolSimpleMonitoring(
new String("Monitoring"), this, processSuspicion,
manageView);
} catch (AlreadyExistingProtocolModuleException aep) {
throw new RuntimeException(
"Should not be possible! Bug in conception.");
}
}
// to abcast a message
synchronized public void abcastMessage(Transportable message) {
fc.enter();
TInteger atype = new TInteger(Constants.AM);
DynAbcastCallParameters aparams = new DynAbcastCallParameters(atype, null);
long cid = dynAbcast.externalCall(aparams, new Message(message, dynAbcastListener));
this.scheduler.waitEnd(cid);
}
// to join a process to the group
synchronized public void sendJoin(PID pid) {
fc.enter();
ManageViewCallParameters params = new ManageViewCallParameters(pid, new TBoolean(true));
long cid = manageView.externalCall(params, null);
this.scheduler.waitEnd(cid);
}
// to remove a process from the group
synchronized public void sendRemove(final PID pid) {
fc.enter();
ManageViewCallParameters params = new ManageViewCallParameters(pid, new TBoolean(false));
long cid = manageView.externalCall(params, null);
this.scheduler.waitEnd(cid);
}
}