blob: 9132a607f66f4f9ca90c7442270107896833a42e [file] [log] [blame]
#include "util.hpp"
#include <cmath>
#include <cstdint>
#include <iostream>
#include <map>
#include <regex>
#include <set>
#include <string>
#include <unordered_map>
#include <utility>
#include <variant>
#include <vector>
using Property = std::string;
using Value = std::variant<int64_t, double, std::string, bool>;
using PropertyMap = std::map<Property, Value>;
namespace pid_control
{
int64_t setZoneIndex(const std::string& name,
std::map<std::string, int64_t>& zones, int64_t index)
{
auto it = zones.find(name);
if (it != zones.end())
{
// Name already allocated, make no change, return existing
return it->second;
}
// The zone name is known not to exist yet
for (;;)
{
bool usedIndex = false;
// See if desired index number is free
for (const auto& zi : zones)
{
if (index == zi.second)
{
usedIndex = true;
break;
}
}
// Increment until a free index number is found
if (usedIndex)
{
++index;
continue;
}
break;
}
// Allocate and return new zone index number for this name
zones[name] = index;
return index;
}
int64_t getZoneIndex(const std::string& name,
std::map<std::string, int64_t>& zones)
{
auto it = zones.find(name);
if (it != zones.end())
{
return it->second;
}
// Auto-assign next unused zone number, using 0-based numbering
return setZoneIndex(name, zones, 0);
}
bool findSensors(const std::unordered_map<std::string, std::string>& sensors,
const std::string& search,
std::vector<std::pair<std::string, std::string>>& matches)
{
std::smatch match;
std::regex reg('/' + search + '$');
for (const auto& sensor : sensors)
{
if (std::regex_search(sensor.first, match, reg))
{
matches.push_back(sensor);
}
}
return matches.size() > 0;
}
std::string getSensorPath(const std::string& type, const std::string& id)
{
std::string layer = type;
if (type == "fan")
{
layer = "fan_tach";
}
else if (type == "temp")
{
layer = "temperature";
}
else if (type == "margin")
{
layer = "temperature";
}
else
{
layer = "unknown"; // TODO(venture): Need to handle.
}
return std::string("/xyz/openbmc_project/sensors/" + layer + "/" + id);
}
std::string getMatch(const std::string& type, const std::string& id)
{
return std::string("type='signal',"
"interface='org.freedesktop.DBus.Properties',"
"member='PropertiesChanged',"
"path='" +
getSensorPath(type, id) + "'");
}
bool validType(const std::string& type)
{
static std::set<std::string> valid = {"fan", "temp", "margin"};
return (valid.find(type) != valid.end());
}
void scaleSensorReading(const double min, const double max, double& value)
{
if (max <= 0 || max <= min)
{
return;
}
value -= min;
value /= (max - min);
}
} // namespace pid_control