StringFloatHashtable * TopologyWorldState::sendProbabilitiesInternal (RemoteNodeInfo *pRNI)
{
// Create a probabilities table with the info on how to reach remote node pRNI
StringFloatHashtable *pIndProb = NULL;
if (isPeerAlive (pRNI)) { // Alive node
pIndProb = new StringFloatHashtable();
float fHigh1 = (float) _fProbContact;
float *pHigh1 = &fHigh1;
pIndProb->put (_pDisService->getNodeId(), pHigh1);
}
else { // Dead node
if (pRNI->getIndirectProbabilities()) {
float fHigh1 = 0.0f;
const char *pszHigh1 = NULL;
float fHigh2 = 0.0f;
const char *pszHigh2 = NULL;
for (StringFloatHashtable::Iterator iNodes = pRNI->getIndirectProbabilities()->getAllElements(); !iNodes.end(); iNodes.nextElement()) {
if (isActiveNeighbor (iNodes.getKey())) {
float prob = *(iNodes.getValue());
if (prob > fHigh1 && prob > fHigh2) {
fHigh2 = fHigh1;
pszHigh2 = pszHigh1;
fHigh1 = prob;
pszHigh1 = iNodes.getKey();
}
else if (prob > fHigh2) {
fHigh2 = prob;
pszHigh2 = iNodes.getKey();
}
}
}
if (fHigh1 > 0.0f) {
pIndProb = new StringFloatHashtable();
float *pHigh1 = &fHigh1;
pIndProb->put (pszHigh1, pHigh1);
if (fHigh2 > 0.0f) {
float *pHigh2 = &fHigh2;
pIndProb->put (pszHigh2, pHigh2);
}
}
}
}
return pIndProb;
}
void RemoteNodeInfo::ageIndirectProbabilities (float fAgeParam, float fProbThreshold, int iTimeSinceLastAging)
{
// Ages the indirect probabilities
// TODO: find a better way, instead of creating a temporary table
// _pIndirectProbabilities: gatewayNodeId->probValue
if (_pIndirectProbabilities) {
StringFloatHashtable * pIndProbTemp = new StringFloatHashtable();
for (StringFloatHashtable::Iterator iNodes = _pIndirectProbabilities->getAllElements(); !iNodes.end(); iNodes.nextElement()) {
float fProb = *(iNodes.getValue()) * pow (fAgeParam, iTimeSinceLastAging);
if (fProb > fProbThreshold) {
float *pProb = &fProb;
pIndProbTemp->put (iNodes.getKey(), pProb);
}
}
delete _pIndirectProbabilities;
_pIndirectProbabilities = pIndProbTemp;
}
}