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#pragma once
#include "env.hpp"
/** @class Thresholds
* @brief Threshold type traits.
*
* @tparam T - The threshold type.
*/
template <typename T>
struct Thresholds
{
static void fail()
{
static_assert(sizeof(Thresholds) == -1, "Unsupported Threshold type");
}
};
/**@brief Thresholds specialization for warning thresholds. */
template <>
struct Thresholds<WarningObject>
{
static constexpr InterfaceType type = InterfaceType::WARN;
static constexpr const char* envLo = "WARNLO";
static constexpr const char* envHi = "WARNHI";
static int64_t (WarningObject::*const setLo)(int64_t);
static int64_t (WarningObject::*const setHi)(int64_t);
static int64_t (WarningObject::*const getLo)() const;
static int64_t (WarningObject::*const getHi)() const;
static bool (WarningObject::*const alarmLo)(bool);
static bool (WarningObject::*const alarmHi)(bool);
};
/**@brief Thresholds specialization for critical thresholds. */
template <>
struct Thresholds<CriticalObject>
{
static constexpr InterfaceType type = InterfaceType::CRIT;
static constexpr const char* envLo = "CRITLO";
static constexpr const char* envHi = "CRITHI";
static int64_t (CriticalObject::*const setLo)(int64_t);
static int64_t (CriticalObject::*const setHi)(int64_t);
static int64_t (CriticalObject::*const getLo)() const;
static int64_t (CriticalObject::*const getHi)() const;
static bool (CriticalObject::*const alarmLo)(bool);
static bool (CriticalObject::*const alarmHi)(bool);
};
/** @brief checkThresholds
*
* Compare a sensor reading to threshold values and set the
* appropriate alarm property if bounds are exceeded.
*
* @tparam T - The threshold type.
*
* @param[in] iface - An sdbusplus server threshold instance.
* @param[in] value - The sensor reading to compare to thresholds.
*/
template <typename T>
void checkThresholds(std::experimental::any& iface, int64_t value)
{
auto realIface = std::experimental::any_cast<std::shared_ptr<T>>
(iface);
auto lo = (*realIface.*Thresholds<T>::getLo)();
auto hi = (*realIface.*Thresholds<T>::getHi)();
(*realIface.*Thresholds<T>::alarmLo)(value <= lo);
(*realIface.*Thresholds<T>::alarmHi)(value >= hi);
}
/** @brief addThreshold
*
* Look for a configured threshold value in the environment and
* create an sdbusplus server threshold if found.
*
* @tparam T - The threshold type.
*
* @param[in] sensorType - sensor type, like 'temp'
* @param[in] sensorID - sensor ID, like '5'
* @param[in] value - The sensor reading.
* @param[in] info - The sdbusplus server connection and interfaces.
*/
template <typename T>
auto addThreshold(const std::string& sensorType,
const std::string& sensorID,
int64_t value,
ObjectInfo& info)
{
static constexpr bool deferSignals = true;
auto& bus = *std::get<sdbusplus::bus::bus*>(info);
auto& objPath = std::get<std::string>(info);
auto& obj = std::get<Object>(info);
std::shared_ptr<T> iface;
auto tLo = env::getEnv(Thresholds<T>::envLo, sensorType, sensorID);
auto tHi = env::getEnv(Thresholds<T>::envHi, sensorType, sensorID);
if (!tLo.empty() && !tHi.empty())
{
iface = std::make_shared<T>(bus, objPath.c_str(), deferSignals);
auto lo = stoll(tLo);
auto hi = stoll(tHi);
(*iface.*Thresholds<T>::setLo)(lo);
(*iface.*Thresholds<T>::setHi)(hi);
(*iface.*Thresholds<T>::alarmLo)(value <= lo);
(*iface.*Thresholds<T>::alarmHi)(value >= hi);
auto type = Thresholds<T>::type;
obj[type] = iface;
}
return iface;
}
// vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
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