connection::role_t connection_pool::get_role(connection::ptr_t conn)
{
static const
#ifndef NO_BOOST
boost::regex
#else
std::regex
#endif
role_searcher("\r\nrole:([a-z]+)\r\n");
reply r = conn->run(command("ROLE"));
std::string role_s;
if (r.type() == reply::type_t::ERROR
#ifndef NO_BOOST
&& boost::algorithm::find_first(r.str(),"unknown"))
#else
&& (r.str().find("unknown") != std::string::npos) )
#endif
{
logging::debug("Old redis, doesn't support ROLE command");
reply r = conn->run(command("INFO") << "replication");
#ifndef NO_BOOST
boost::smatch results;
if (boost::regex_search(r.str(), results, role_searcher))
#else
std::smatch results;
if (std::regex_search(r.str(), results, role_searcher))
#endif
{
role_s = results[1];
}
}
else if (r.type() == reply::type_t::ARRAY)
reply patterns::script_exec::exec(connection::ptr_t connection,
const std::vector<std::string>& keys,
const std::vector<std::string>& args)
{
std::vector<std::string> exec_command;
exec_command.reserve(3+keys.size()+args.size());
exec_command.push_back("EVALSHA");
exec_command.push_back(_sha1);
exec_command.push_back(std::to_string(keys.size()));
exec_command.insert(exec_command.end(), keys.begin(), keys.end());
exec_command.insert(exec_command.end(), args.begin(), args.end());
reply r = connection->run(exec_command);
if (r.type() == reply::type_t::ERR &&
r.str().find("NOSCRIPT") == 0
)
{
exec_command[0] = "EVAL";
if (_is_path)
{
exec_command[1] = utils::read_content_of_file(_script);
}
else
{
exec_command[1] = _script;
}
r = connection->run(exec_command);
}
return r;
}
double median_filter::median(connection::ptr_t connection, const std::string &tag)
{
reply r = connection->run(command("SORT") << list_key(tag));
const std::vector<reply>& values = r.elements();
int size = values.size();
if (size % 2 != 0)
{
return boost::lexical_cast<double>(values.at((size-1)/2).str());
}
else
{
if (size == 0)
{
return 0;
}
else
{
return ( boost::lexical_cast<double>(values.at(size/2-1).str()) +
boost::lexical_cast<double>(values.at(size/2).str()) ) / 2;
}
}
}