//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see http://www.gnu.org/licenses/.
//
#include "AEStream.h"
Define_Module(AEStream);
AEStream::AEStream(){
//Consts
TIM_START = "StartCommunication";
TIM_STOP = "StopCommunication";
MSG_STDATA = "DATA-";
PAR_START = "startAt";
PAR_STOP = "stopAt";
PAR_BEGIN = "beginStreamAt";
PAR_END = "endStreamAt";
PAR_INTERVAL = "interval";
PAR_SIZE = "size";
PAR_DSTAPNAME = "dstApName";
PAR_DSTAPINSTANCE = "dstApInstance";
PAR_DSTAENAME = "dstAeName";
PAR_DSTAEINSTANCE = "dstAeInstance";
}
void AEStream::initialize()
{
//Init pointers
initPointers();
//Source info
initNamingInfo();
//Setup signals
initSignalsAndListeners();
//Init QoSRequirements
initQoSRequiremets();
//Destination for flow
dstApName = this->par(PAR_DSTAPNAME).stringValue();
dstApInstance = this->par(PAR_DSTAPINSTANCE).stringValue();
dstAeName = this->par(PAR_DSTAENAME).stringValue();
dstAeInstance = this->par(PAR_DSTAEINSTANCE).stringValue();
//Timers
startAt = simTime() + par(PAR_START);
stopAt = simTime() + par(PAR_STOP);
beginStreamAt = simTime() + par(PAR_BEGIN);
endStreamAt = simTime() + par(PAR_END);
interval = par(PAR_INTERVAL).doubleValue();
size = par(PAR_SIZE);
//Schedule AllocateRequest
if (startAt > 0)
prepareAllocateRequest();
//Schedule Data transfer
if (beginStreamAt > 0 && beginStreamAt < endStreamAt)
prepareStreamData();
//Schedule DeallocateRequest
if (stopAt > 0)
prepareDeallocateRequest();
}
void AEStream::handleMessage(cMessage *msg)
{
if ( msg->isSelfMessage() )
this->handleSelfMessage(msg);
}
void AEStream::handleSelfMessage(cMessage* msg) {
if ( !strcmp(msg->getName(), TIM_START) ) {
//Flow
APNamingInfo src = this->getApni();
APNamingInfo dst = APNamingInfo( APN(this->dstApName), this->dstApInstance,
this->dstAeName, this->dstAeInstance);
Flow fl = Flow(src, dst);
fl.setQosParameters(this->getQoSRequirements());
//Insert it to the Flows ADT
insertFlow(fl);
sendAllocationRequest(&flows.back());
}
else if ( !strcmp(msg->getName(), TIM_STOP) ) {
sendDeallocationRequest(&flows.back());
}
else if ( strstr(msg->getName(), MSG_STDATA) ) {
//Create data stream chunk messsage
CDAP_M_Read* data = new CDAP_M_Read(msg->getName());
object_t obj;
obj.objectName = msg->getName();
obj.objectClass = "string";
obj.objectInstance = -1;
obj.objectVal = (cObject*)("0123456789abcdef");
data->setObject(obj);
data->setByteLength(size);
//Send message
sendData(&flows.back(), data);
}
else
EV << this->getFullPath() << " received unknown self-message " << msg->getName();
delete(msg);
}
void AEStream::prepareAllocateRequest() {
//Schedule AllocateRequest
cMessage* m1 = new cMessage(TIM_START);
scheduleAt(startAt, m1);
}
void AEStream::prepareStreamData() {
//Schedule stream data chunk
int j = 0;
for (simtime_t i = beginStreamAt; i < endStreamAt; i += interval) {
std::ostringstream ss;
ss << MSG_STDATA << j++;
cMessage* m2 = new cMessage(ss.str().c_str());
scheduleAt(i, m2);
}
}
void AEStream::prepareDeallocateRequest() {
//Schedule DeallocateRequest
cMessage* m3 = new cMessage(TIM_STOP);
scheduleAt(stopAt, m3);
}
void AEStream::processMRead(CDAPMessage* msg) {
CDAP_M_Read* msg1 = check_and_cast<CDAP_M_Read*>(msg);
EV << "Received data M_DATA";
object_t object = msg1->getObject();
EV << " with object '" << object.objectClass << "' and value '" << object.objectVal << "'" << endl;
}