OptionalString MetaAlert::get(const std::string &path) const
{
GlobalLock lock;
try
{
typedef StrFc::Params<StrFc::DefaultHandleMap, CallbackHandle> Params;
// compute response
CallbackHandle cb;
Params p(StrFc::Path(path), cb);
StrFc::MainDispatcher::process(node_, p);
// return computed value, if set
if(cb.out_.get()!=NULL)
{
LOGMSG_DEBUG_S(log_)<<"element '"<<path<<"' of node "<<node_->getMetaAlert()->getID().get()<<" is "<<cb.out_.get();
return cb.out_;
}
// by default return NULL
LOGMSG_DEBUG_S(log_)<<"element '"<<path<<"' of node "<<node_->getMetaAlert()->getID().get()<<" returns NULL";
return OptionalString();
}
catch(const StrFc::Exception &ex)
{
LOGMSG_ERROR_S(log_)<<"facade error accessing element '"<<path<<"': "<<ex.what();
}
catch(const std::exception &ex)
{
LOGMSG_ERROR_S(log_)<<"generic error accessing element '"<<path<<"': "<<ex.what();
}
// on error return empty string
return OptionalString();
}
OptionalString ListAddTokenCommand::getNewStringToken()
{
std::string token;
if(!m_func.getValueA<std::string>(token, m_sharedCache)) {
LiteralString literal;
if(m_func.getValueA<LiteralString>(literal, m_sharedCache)) {
return OptionalString(literal.literal);
}
} else {
auto result = m_sharedCache->getVar<std::string>(token, Type::String);
if(result) {
return OptionalString(*result);
}
}
setLastErrorMessage("list_add: problem getting new token");
return OptionalString();
}