blob: a04a7435d26c481338c4424e49810f2fa37bd2de [file] [log] [blame]
#include "dbusSensor.hpp"
#include "exprtkTools.hpp"
#include <nlohmann/json.hpp>
#include <sdbusplus/bus.hpp>
#include <xyz/openbmc_project/Sensor/Threshold/Critical/server.hpp>
#include <xyz/openbmc_project/Sensor/Threshold/Warning/server.hpp>
#include <xyz/openbmc_project/Sensor/Value/server.hpp>
#include <map>
#include <string>
namespace phosphor
{
namespace virtualSensor
{
using Json = nlohmann::json;
using ValueIface = sdbusplus::xyz::openbmc_project::Sensor::server::Value;
using CriticalInterface =
sdbusplus::xyz::openbmc_project::Sensor::Threshold::server::Critical;
using WarningInterface =
sdbusplus::xyz::openbmc_project::Sensor::Threshold::server::Warning;
using sensorIfaces =
sdbusplus::server::object::object<ValueIface, CriticalInterface,
WarningInterface>;
class SensorParam
{
public:
SensorParam() = delete;
virtual ~SensorParam() = default;
enum ParamType
{
constParam,
dbusParam
};
/** @brief Constructs SensorParam (type = constParam)
*
* @param[in] value - Value of constant parameter
*/
explicit SensorParam(double value) : value(value), paramType(constParam)
{}
/** @brief Constructs SensorParam (type = dbusParam)
*
* @param[in] bus - Handle to system dbus
* @param[in] path - The Dbus path of sensor
* @param[in] ctx - sensor context for update
*/
SensorParam(sdbusplus::bus::bus& bus, std::string path, void* ctx) :
dbusSensor(std::make_unique<DbusSensor>(bus, path, ctx)),
paramType(dbusParam)
{}
/** @brief Get sensor value property from D-bus interface */
double getParamValue();
private:
std::unique_ptr<DbusSensor> dbusSensor = nullptr;
double value = 0;
ParamType paramType;
};
class VirtualSensor : public sensorIfaces
{
public:
VirtualSensor() = delete;
virtual ~VirtualSensor() = default;
/** @brief Constructs VirtualSensor
*
* @param[in] bus - Handle to system dbus
* @param[in] objPath - The Dbus path of sensor
* @param[in] sensorConfig - Json object for sensor config
*/
VirtualSensor(sdbusplus::bus::bus& bus, const char* objPath,
const Json& sensorConfig, const std::string& name) :
sensorIfaces(bus, objPath),
bus(bus), name(name)
{
initVirtualSensor(sensorConfig);
}
struct Threshold
{
double criticalHigh;
double criticalLow;
double warningHigh;
double warningLow;
};
/** @brief Set sensor value */
void setSensorValue(double value);
/** @brief Update sensor at regular intrval */
void updateVirtualSensor();
/** @brief Map of list of parameters */
using ParamMap =
std::unordered_map<std::string, std::unique_ptr<SensorParam>>;
ParamMap paramMap;
private:
/** @brief sdbusplus bus client connection. */
sdbusplus::bus::bus& bus;
/** @brief name of sensor */
std::string name;
/** @brief Expression string for virtual sensor value calculations */
std::string exprStr;
/** @brief symbol table from exprtk */
exprtk::symbol_table<double> symbols{};
/** @brief expression from exprtk to calculate sensor value */
exprtk::expression<double> expression{};
/** @brief The vecops package so the expression can use vectors */
exprtk::rtl::vecops::package<double> vecopsPackage;
/** @brief Read config from json object and initialize sensor data
* for each virtual sensor
*/
void initVirtualSensor(const Json& sensorConfig);
/** @brief Set Sensor Threshold to D-bus at beginning */
void setSensorThreshold(Threshold& sensorThreshold);
/** @brief Check Sensor threshold and update alarm and log */
void checkSensorThreshold(const double value);
};
class VirtualSensors
{
public:
VirtualSensors() = delete;
virtual ~VirtualSensors() = default;
/** @brief Constructs VirtualSensors
*
* @param[in] bus - Handle to system dbus
*/
explicit VirtualSensors(sdbusplus::bus::bus& bus) : bus(bus)
{
createVirtualSensors();
}
private:
/** @brief sdbusplus bus client connection. */
sdbusplus::bus::bus& bus;
/** @brief Parsing virtual sensor config JSON file */
Json parseConfigFile(const std::string configFile);
/** @brief Map of the object VirtualSensor */
std::unordered_map<std::string, std::unique_ptr<VirtualSensor>>
virtualSensorsMap;
/** @brief Create list of virtual sensors */
void createVirtualSensors();
};
} // namespace virtualSensor
} // namespace phosphor