Subscription * LocalNodeInfo::getSubscriptionForClient (uint16 ui16ClientId, const char *pszGroupName)
{
SubscriptionList *pSL = _localSubscriptions.get (ui16ClientId);
if (pSL == NULL) {
return NULL;
}
return pSL->getSubscription (pszGroupName);
}
void LocalNodeInfo::recomputeConsolidateSubsciptionList (void)
{
// TODO CHECK: I don't think the includes applies anymore, so I commented it
// In fact, even if the includes returns true,
// I still need to merge subscriptions in terms of priority, reliability, sequenced, etc
CRC * pCRC = new CRC();
pCRC->init();
for (StringHashtable<Subscription>::Iterator iterator = _consolidatedSubscriptions.getIterator(); !iterator.end(); iterator.nextElement()) {
pCRC->update ((const char *)iterator.getKey());
pCRC->update32 (iterator.getValue());
}
uint16 oldCRC = pCRC->getChecksum();
// Delete the current Consolidate Subscription List and compute a new one
_consolidatedSubscriptions.clear();
// For each client
for (UInt32Hashtable<SubscriptionList>::Iterator i = _localSubscriptions.getAllElements(); !i.end(); i.nextElement()) {
SubscriptionList *pSL = i.getValue();
if (pSL != NULL) {
// Get all its subscriptions
PtrLList<String> *pSubgroups = pSL->getAllSubscribedGroups();
for (String *pSubGroupName = pSubgroups->getFirst(); pSubGroupName != NULL; pSubGroupName = pSubgroups->getNext()) {
// For each group, get the subscription the client has
const char *pszGroupName = pSubGroupName->c_str();
Subscription *pClientSub = pSL->getSubscription (pszGroupName);
// And the subscription in the consolidate subscription list if any
Subscription *pSubInConsolidateList = _consolidatedSubscriptions.getSubscription (pszGroupName);
if (pSubInConsolidateList == NULL) {
_consolidatedSubscriptions.addSubscription (pszGroupName, pClientSub->clone());
}
else {
/*if (pClientSub->includes (pSubInConsolidateList)) {
_consolidatedSubscriptions.removeGroup (pszGroupName);
_consolidatedSubscriptions.addSubscription (pszGroupName, pClientSub->clone());
}
else {*/
pClientSub->merge (pSubInConsolidateList);
/*}*/
}
}
}
}
pCRC->reset();
for (StringHashtable<Subscription>::Iterator iterator = _consolidatedSubscriptions.getIterator(); !iterator.end(); iterator.nextElement()) {
pCRC->update ((const char *) iterator.getKey());
pCRC->update32 (iterator.getValue());
}
uint16 newCRC = pCRC->getChecksum();
if (oldCRC != newCRC) {
ui32SubscriptionStateSeqID++;
GroupSubscription *pSubscription = new GroupSubscription(); // Void subscription to respect method interface
_notifier.modifiedSubscriptionForPeer (_pszId, pSubscription);
}
}
void LocalNodeInfo::addAddFiltersToConsolidateList (const char *pszGroupName)
{
_m.lock (328);
// Get all the client subscribing the group
DArray<uint16> *pSubClients = NULL;//getSubscribingClients (pszGroupName);
Subscription *pSCons = _consolidatedSubscriptions.getSubscription (pszGroupName);
if ((pSubClients == NULL) || (!((pSCons != NULL) && (pSCons->getSubscriptionType() == Subscription::GROUP_SUBSCRIPTION)))) {
_m.unlock (328);
return;
}
GroupSubscription *pGSCons = (GroupSubscription *) pSCons;
// Look for the first subscribing client which subscribes by a GROUP_SUBSCRIPTION
uint16 ui16ClientId;
Subscription *pS = NULL;
for (int i = 0; i <= pSubClients->getHighestIndex(); i++) {
ui16ClientId = (*pSubClients)[i];
SubscriptionList *pSL = NULL;
if (((pSL = _localSubscriptions.get(ui16ClientId)) != NULL) && ((pS = pSL->getSubscription(pszGroupName)) != NULL)) {
if (pS->getSubscriptionType() == Subscription::GROUP_SUBSCRIPTION) {
break;
}
if (pS->getSubscriptionType() == Subscription::GROUP_PREDICATE_SUBSCRIPTION) {
// I want every tag - remove them and return
pGSCons->removeAllFilters();
_m.unlock (328);
return;
}
}
}
// match every filter against every other subscribing client's tag list.
// Add it iff:
// 1) Every other GROUP_SUBSCRIPTION has the same filter
// 2) No one of the other GROUP_TAG_SUBSCRIPTION subscribe the tag
// 3) There is not any GROUP_PREDICATE_SUBSCRIPTION for the group
GroupSubscription *pGS = (GroupSubscription*) pS;
DArray<uint16> *pTags = pGS->getAllFilters();
for (int i = 0; i <= pTags->getHighestIndex(); i++) {
bool bAddFilter = true;
int16 ui16Tag = (*pTags)[i];
for (int j = 0; j <= pSubClients->getHighestIndex(); j++) {
Subscription *pS = NULL;
if (pS->matches(ui16Tag)) {
bAddFilter = false;
break;
}
}
if (bAddFilter) {
pGSCons->addFilter((*pTags)[i]);
}
}
_m.unlock (328);
}
int LocalNodeInfo::unsubscribe (uint16 ui16ClientId, const char *pszGroupName, uint16 ui16Tag)
{
char *pszOnDemandDataGroupName = getOnDemandDataGroupName (pszGroupName);
if (pszOnDemandDataGroupName == NULL) {
// The on-demand subscription group name could not be generated
return -1;
}
_m.lock (306);
SubscriptionList *pSL = _localSubscriptions.get (ui16ClientId);
int rc = 0;
if (pSL == NULL) {
rc = -2;
}
else {
Subscription *pSub = pSL->getSubscription (pszGroupName);
if (pSub == NULL) {
rc = -3;
}
else {
uint8 ui8SubscriptionType = pSub->getSubscriptionType();
if ((ui8SubscriptionType == Subscription::GROUP_SUBSCRIPTION) && (ui16Tag == 0)) {
if (pSL->removeGroup (pszGroupName)) {
rc = -4;
}
else {
if (pSL->removeGroup (pszOnDemandDataGroupName)) {
rc = -5;
}
}
}
else if ((ui8SubscriptionType == Subscription::GROUP_TAG_SUBSCRIPTION) && (ui16Tag != 0)) {
if (pSL->removeGroupTag (pszGroupName, ui16Tag)) {
rc = -6;
}
else {
if (pSL->removeGroupTag (pszOnDemandDataGroupName, ui16Tag)) {
rc = -7;
}
}
}
}
}
if (rc == 0) {
recomputeConsolidateSubsciptionList ();
}
free (pszOnDemandDataGroupName);
_m.unlock (306);
return rc;
}
bool LocalNodeInfo::isInHistory (uint16 ui16ClientId, Message *pMsg, uint32 ui32LatestMsgRcvdPerSender)
{
_m.lock (312);
SubscriptionList *pSL = _localSubscriptions.get (ui16ClientId);
if (pSL != NULL) {
Subscription *pS = pSL->getSubscription (pMsg->getMessageInfo()->getGroupName());
if (pS) {
bool bRet = pS->isInHistory (pMsg, ui32LatestMsgRcvdPerSender);
_m.unlock (312);
return bRet;
}
}
_m.unlock (312);
return false;
}
int LocalNodeInfo::addFilter (uint16 ui16ClientId, const char *pszGroupName, uint16 ui16Tag)
{
_m.lock (301);
SubscriptionList *pSL = _localSubscriptions.get (ui16ClientId);
if (pSL == NULL) {
_m.unlock (301);
return -1;
}
if (pSL->addFilterToGroup (pszGroupName, ui16Tag) != 0) {
_m.unlock (301);
return -2;
}
bool bAddFilter = true;
// I can add the filter to the ConsolidatedSubscriptions only if every client subscribing that group has the filter too
for (UInt32Hashtable<SubscriptionList>::Iterator i = _localSubscriptions.getAllElements(); !i.end(); i.nextElement()) {
SubscriptionList *pSL = i.getValue();
Subscription *pS = pSL->getSubscription(pszGroupName);
switch (pS->getSubscriptionType()) {
case Subscription::GROUP_SUBSCRIPTION: {
if (!((GroupSubscription *)pS)->hasFilter(ui16Tag)) {
bAddFilter = false;
break;
}
break;
}
case Subscription::GROUP_TAG_SUBSCRIPTION: {
if (((GroupTagSubscription *)pS)->hasTag(ui16Tag)) {
bAddFilter = false;
break;
}
break;
}
case Subscription::GROUP_PREDICATE_SUBSCRIPTION :
bAddFilter = false;
break;
}
}
if (bAddFilter) {
_consolidatedSubscriptions.addFilterToGroup (pszGroupName, ui16Tag);
}
_m.unlock (301);
return 0;
}