virtual std::unique_ptr<Cursor> metadata_query(std::string metric, std::string where_clause) {
boost::property_tree::ptree query;
// No (re)sampling
query.add("select", "names");
// Add metric name
if (!metric.empty()) {
query.add("metric", metric);
}
// Where clause
if (!where_clause.empty()) {
boost::property_tree::ptree where = from_json(where_clause);
query.add_child("where", where);
}
std::stringstream stream;
boost::property_tree::json_parser::write_json(stream, query, true);
std::string query_text = stream.str();
auto cursor = aku_query(db_, query_text.c_str());
std::unique_ptr<LocalCursor> ptr(new LocalCursor(db_, cursor));
return std::move(ptr);
}
virtual std::unique_ptr<Cursor> query(std::string begin,
std::string end,
std::vector<std::string> ids)
{
boost::property_tree::ptree query;
// Add metric name
query.add("metric", "cpu");
// Add time constraints
boost::property_tree::ptree range;
range.add("from", begin);
range.add("to", end);
query.add_child("range", range);
// Where clause
// Where clause
boost::property_tree::ptree where;
boost::property_tree::ptree array;
for (auto series: ids) {
auto val = series.substr(8, 1);
boost::property_tree::ptree elem;
elem.put("", val);
array.push_back(std::make_pair("", elem));
}
where.add_child("key", array);
query.add_child("where", where);
std::stringstream stream;
boost::property_tree::json_parser::write_json(stream, query, true);
std::string query_text = stream.str();
auto cursor = aku_query(db_, query_text.c_str());
std::unique_ptr<LocalCursor> ptr(new LocalCursor(db_, cursor));
return std::move(ptr);
}
std::shared_ptr<DbCursor> AkumuliConnection::search(std::string query) {
aku_Cursor* cursor = aku_query(db_, query.c_str());
return std::make_shared<AkumuliCursor>(cursor);
}
