/**
* Find local service matching filter.
*/
std::set<ServiceDescription> ServiceManager::findLocal(const ServiceFilter& svcFilter) {
std::set<ServiceDescription> foundSvcs;
std::map<intptr_t, ServiceDescription>::iterator svcDescIter = _localSvcDesc.begin();
while(svcDescIter != _localSvcDesc.end()) {
if (svcFilter.matches(svcDescIter->second)) {
foundSvcs.insert(svcDescIter->second);
UM_LOG_INFO("we have a match for %s", svcFilter.getServiceName().c_str());
}
svcDescIter++;
}
return foundSvcs;
}
void ServiceManager::receive(Message* msg) {
ScopeLock lock(&_mutex);
// is this a response for one of our requests?
if (msg->getMeta().find("respId") != msg->getMeta().end()) {
string respId = msg->getMeta("respId");
if (_findRequests.find(respId) != _findRequests.end()) {
_findResponses[respId] = new Message(*msg);
_findRequests[respId].signal();
}
}
// is someone asking for a service?
if (msg->getMeta().find("type") != msg->getMeta().end() &&
msg->getMeta("type").compare("serviceDisc") == 0) {
ServiceFilter* filter = new ServiceFilter(msg);
std::set<ServiceDescription*> foundSvcs = findLocal(filter);
delete filter;
if (foundSvcs.size() > 0) {
ServiceDescription* svcDesc = (*(foundSvcs.begin()));
Message* foundMsg = svcDesc->toMessage();
foundMsg->setMeta("respId", msg->getMeta("reqId"));
foundMsg->setMeta("desc:channel", svcDesc->getChannelName());
_svcPub->send(foundMsg);
delete foundMsg;
}
}
// is this the start of a continuous query?
if (msg->getMeta().find("type") != msg->getMeta().end() &&
msg->getMeta("type").compare("serviceDiscStart") == 0) {
ServiceFilter* filter = new ServiceFilter(msg);
_remoteQueries[filter->_uuid] = filter;
// do we have such a service?
std::set<ServiceDescription*> foundSvcs = findLocal(filter);
std::set<ServiceDescription*>::iterator svcDescIter = foundSvcs.begin();
while(svcDescIter != foundSvcs.end()) {
if (filter->matches(*svcDescIter)) {
Message* foundMsg = (*svcDescIter)->toMessage();
foundMsg->setMeta("filterId", filter->_uuid);
foundMsg->setMeta("type", "serviceDiscFound");
foundMsg->setMeta("desc:channel", (*svcDescIter)->getChannelName());
_svcPub->send(foundMsg);
delete foundMsg;
}
svcDescIter++;
}
}
// is this the end of a continuous query?
if (msg->getMeta().find("type") != msg->getMeta().end() &&
msg->getMeta("type").compare("serviceDiscStop") == 0) {
ServiceFilter* filter = new ServiceFilter(msg);
if (_remoteQueries.find(filter->_uuid) != _remoteQueries.end()) {
delete _remoteQueries[filter->_uuid];
_remoteQueries.erase(filter->_uuid);
}
delete filter;
}
// is this a reply to a continuous service query?
if (msg->getMeta().find("type") != msg->getMeta().end() &&
(msg->getMeta("type").compare("serviceDiscFound") == 0 ||
msg->getMeta("type").compare("serviceDiscRemoved") == 0)) {
// _svcQueries comparator uses filter uuid
ServiceFilter* keyFilter = new ServiceFilter("");
keyFilter->_uuid = msg->getMeta("filterId");
if (_localQueries.find(keyFilter) != _localQueries.end()) {
ResultSet<ServiceDescription>* listener = _localQueries[keyFilter];
assert(msg->getMeta("desc:channel").size() > 0);
if (_remoteSvcDesc.find(msg->getMeta("desc:channel")) == _remoteSvcDesc.end())
_remoteSvcDesc[msg->getMeta("desc:channel")] = shared_ptr<ServiceDescription>(new ServiceDescription(msg));
if (msg->getMeta("type").compare("serviceDiscFound") == 0) {
listener->added(_remoteSvcDesc[msg->getMeta("desc:channel")]);
} else {
listener->removed(_remoteSvcDesc[msg->getMeta("desc:channel")]);
_remoteSvcDesc.erase(msg->getMeta("desc:channel"));
}
}
delete keyFilter;
}
}
