virtualSensor.hpp - openbmc/phosphor-virtual-sensor - Gitiles

 #include "dbusSensor.hpp"
 #include "exprtkTools.hpp"
 #include "thresholds.hpp"

 #include <nlohmann/json.hpp>
 #include <phosphor-logging/lg2.hpp>
 #include <sdbusplus/bus.hpp>
 #include <xyz/openbmc_project/Association/Definitions/server.hpp>
 #include <xyz/openbmc_project/Sensor/Value/server.hpp>

 #include <map>
 #include <string>

 namespace phosphor
 {
 namespace virtualSensor
 {

 PHOSPHOR_LOG2_USING_WITH_FLAGS;

 using BasicVariantType =
     std::variant<std::string, int64_t, uint64_t, double, int32_t, uint32_t,
                  int16_t, uint16_t, uint8_t, bool, std::vector<std::string>>;

 using PropertyMap = std::map<std::string, BasicVariantType>;

 using InterfaceMap = std::map<std::string, PropertyMap>;

 using ManagedObjectType =
     std::map<sdbusplus::message::object_path, InterfaceMap>;

 using Json = nlohmann::json;

 template <typename... T>
 using ServerObject = typename sdbusplus::server::object_t<T...>;

 using ValueIface = sdbusplus::xyz::openbmc_project::Sensor::server::Value;
 using ValueObject = ServerObject<ValueIface>;

 using AssociationIface =
     sdbusplus::xyz::openbmc_project::Association::server::Definitions;
 using AssociationObject = ServerObject<AssociationIface>;

 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_t& bus, const 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 ValueObject
 {
   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_t& bus, const char* objPath,
                   const Json& sensorConfig, const std::string& name) :
         ValueObject(bus, objPath, action::defer_emit),
         bus(bus), name(name)
     {
         initVirtualSensor(sensorConfig, objPath);
     }

     /** @brief Constructs VirtualSensor
      *
      * @param[in] bus          - Handle to system dbus
      * @param[in] objPath      - The Dbus path of sensor
      * @param[in] ifacemap     - All the sensor information
      * @param[in] name         - Virtual sensor name
      * @param[in] type         - Virtual sensor type/unit
      * @param[in] calcType     - Calculation used to calculate sensor value
      * @param[in] entityPath   - Virtual sensor path in entityManager Dbus
      *
      */
     VirtualSensor(sdbusplus::bus_t& bus, const char* objPath,
                   const InterfaceMap& ifacemap, const std::string& name,
                   const std::string& type, const std::string& calculationType,
                   const std::string& entityPath) :
         ValueObject(bus, objPath, action::defer_emit),
         bus(bus), name(name), entityPath(entityPath)
     {
         initVirtualSensor(ifacemap, objPath, type, calculationType);
     }

     /** @brief Set sensor value */
     void setSensorValue(double value);
     /** @brief Update sensor at regular intrval */
     void updateVirtualSensor();
     /** @brief Check if sensor value is in valid range */
     bool sensorInRange(double value);

     /** @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_t& bus;
     /** @brief name of sensor */
     std::string name;

     /** @brief Virtual sensor path in entityManager Dbus.
      * This value is used to set thresholds/create association
      */
     std::string entityPath;
     /** @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 The maximum valid value for an input sensor **/
     double maxValidInput = std::numeric_limits<double>::infinity();
     /** @brief The minimum valid value for an input sensor **/
     double minValidInput = -std::numeric_limits<double>::infinity();

     /** @brief The critical threshold interface object */
     std::unique_ptr<Threshold<CriticalObject>> criticalIface;
     /** @brief The warning threshold interface object */
     std::unique_ptr<Threshold<WarningObject>> warningIface;
     /** @brief The soft shutdown threshold interface object */
     std::unique_ptr<Threshold<SoftShutdownObject>> softShutdownIface;
     /** @brief The hard shutdown threshold interface object */
     std::unique_ptr<Threshold<HardShutdownObject>> hardShutdownIface;
     /** @brief The performance loss threshold interface object */
     std::unique_ptr<Threshold<PerformanceLossObject>> perfLossIface;

     /** @brief The association interface object */
     std::unique_ptr<AssociationObject> associationIface;

     /** @brief Read config from json object and initialize sensor data
      * for each virtual sensor
      */
     void initVirtualSensor(const Json& sensorConfig,
                            const std::string& objPath);

     /** @brief Read config from interface map and initialize sensor data
      * for each virtual sensor
      */
     void initVirtualSensor(const InterfaceMap& interfaceMap,
                            const std::string& objPath,
                            const std::string& sensorType,
                            const std::string& calculationType);

     /** @brief Returns which calculation function or expression to use */
     double calculateValue(const std::string& sensortype,
                           const VirtualSensor::ParamMap& paramMap);
     /** @brief Calculate median value from sensors */
     double
         calculateModifiedMedianValue(const VirtualSensor::ParamMap& paramMap);
     /** @brief Calculate maximum value from sensors */
     double calculateMaximumValue(const VirtualSensor::ParamMap& paramMap);
     /** @brief create threshold objects from json config */
     void createThresholds(const Json& threshold, const std::string& objPath);
     /** @brief parse config from entity manager **/
     void parseConfigInterface(const PropertyMap& propertyMap,
                               const std::string& sensorType,
                               const std::string& interface);

     /** @brief Check Sensor threshold and update alarm and log */
     template <typename V, typename T>
     void checkThresholds(V value, T& threshold)
     {
         if (!threshold)
             return;

         static constexpr auto tname = T::element_type::name;

         auto alarmHigh = threshold->alarmHigh();
         auto highHysteresis = threshold->getHighHysteresis();
         if ((!alarmHigh && value >= threshold->high()) ||
             (alarmHigh && value < (threshold->high() - highHysteresis)))
         {
             if (!alarmHigh)
             {
                 error("ASSERT: sensor {SENSOR} is above the upper threshold "
                       "{THRESHOLD}.",
                       "SENSOR", name, "THRESHOLD", tname);
                 threshold->alarmHighSignalAsserted(value);
             }
             else
             {
                 info("DEASSERT: sensor {SENSOR} is under the upper threshold "
                      "{THRESHOLD}.",
                      "SENSOR", name, "THRESHOLD", tname);
                 threshold->alarmHighSignalDeasserted(value);
             }
             threshold->alarmHigh(!alarmHigh);
         }

         auto alarmLow = threshold->alarmLow();
         auto lowHysteresis = threshold->getLowHysteresis();
         if ((!alarmLow && value <= threshold->low()) ||
             (alarmLow && value > (threshold->low() + lowHysteresis)))
         {
             if (!alarmLow)
             {
                 error("ASSERT: sensor {SENSOR} is below the lower threshold "
                       "{THRESHOLD}.",
                       "SENSOR", name, "THRESHOLD", tname);
                 threshold->alarmLowSignalAsserted(value);
             }
             else
             {
                 info("DEASSERT: sensor {SENSOR} is above the lower threshold "
                      "{THRESHOLD}.",
                      "SENSOR", name, "THRESHOLD", tname);
                 threshold->alarmLowSignalDeasserted(value);
             }
             threshold->alarmLow(!alarmLow);
         }
     }

     /** @brief Create Association from entityPath*/
     void createAssociation(const std::string& objPath,
                            const std::string& entityPath);
 };

 class VirtualSensors
 {
   public:
     VirtualSensors() = delete;
     virtual ~VirtualSensors() = default;

     /** @brief Constructs VirtualSensors
      *
      * @param[in] bus     - Handle to system dbus
      */
     explicit VirtualSensors(sdbusplus::bus_t& bus) : bus(bus)
     {
         createVirtualSensors();
     }
     /** @brief Calls createVirtualSensor when interface added */
     void propertiesChanged(sdbusplus::message_t& msg);

   private:
     /** @brief sdbusplus bus client connection. */
     sdbusplus::bus_t& bus;
     /** @brief Get virual sensor config from DBus**/
     ManagedObjectType getObjectsFromDBus();
     /** @brief Parsing virtual sensor config JSON file  */
     Json parseConfigFile();

     /** @brief Matches for virtual sensors */
     std::vector<std::unique_ptr<sdbusplus::bus::match_t>> matches;
     /** @brief Map of the object VirtualSensor */
     std::unordered_map<std::string, std::unique_ptr<VirtualSensor>>
         virtualSensorsMap;

     /** @brief Create list of virtual sensors from JSON config*/
     void createVirtualSensors();
     /** @brief Create list of virtual sensors from DBus config */
     void createVirtualSensorsFromDBus(const std::string& calculationType);
     /** @brief Setup matches for virtual sensors */
     void setupMatches();
 };

 } // namespace virtualSensor
 } // namespace phosphor
	#include "dbusSensor.hpp"
	#include "exprtkTools.hpp"
	#include "thresholds.hpp"

	#include <nlohmann/json.hpp>
	#include <phosphor-logging/lg2.hpp>
	#include <sdbusplus/bus.hpp>
	#include <xyz/openbmc_project/Association/Definitions/server.hpp>
	#include <xyz/openbmc_project/Sensor/Value/server.hpp>

	#include <map>
	#include <string>

	namespace phosphor
	{
	namespace virtualSensor
	{

	PHOSPHOR_LOG2_USING_WITH_FLAGS;

	using BasicVariantType =
	std::variant<std::string, int64_t, uint64_t, double, int32_t, uint32_t,
	int16_t, uint16_t, uint8_t, bool, std::vector<std::string>>;

	using PropertyMap = std::map<std::string, BasicVariantType>;

	using InterfaceMap = std::map<std::string, PropertyMap>;

	using ManagedObjectType =
	std::map<sdbusplus::message::object_path, InterfaceMap>;

	using Json = nlohmann::json;

	template <typename... T>
	using ServerObject = typename sdbusplus::server::object_t<T...>;

	using ValueIface = sdbusplus::xyz::openbmc_project::Sensor::server::Value;
	using ValueObject = ServerObject<ValueIface>;

	using AssociationIface =
	sdbusplus::xyz::openbmc_project::Association::server::Definitions;
	using AssociationObject = ServerObject<AssociationIface>;

	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_t& bus, const 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 ValueObject
	{
	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_t& bus, const char* objPath,
	const Json& sensorConfig, const std::string& name) :
	ValueObject(bus, objPath, action::defer_emit),
	bus(bus), name(name)
	{
	initVirtualSensor(sensorConfig, objPath);
	}

	/** @brief Constructs VirtualSensor
	*
	* @param[in] bus - Handle to system dbus
	* @param[in] objPath - The Dbus path of sensor
	* @param[in] ifacemap - All the sensor information
	* @param[in] name - Virtual sensor name
	* @param[in] type - Virtual sensor type/unit
	* @param[in] calcType - Calculation used to calculate sensor value
	* @param[in] entityPath - Virtual sensor path in entityManager Dbus
	*
	*/
	VirtualSensor(sdbusplus::bus_t& bus, const char* objPath,
	const InterfaceMap& ifacemap, const std::string& name,
	const std::string& type, const std::string& calculationType,
	const std::string& entityPath) :
	ValueObject(bus, objPath, action::defer_emit),
	bus(bus), name(name), entityPath(entityPath)
	{
	initVirtualSensor(ifacemap, objPath, type, calculationType);
	}

	/** @brief Set sensor value */
	void setSensorValue(double value);
	/** @brief Update sensor at regular intrval */
	void updateVirtualSensor();
	/** @brief Check if sensor value is in valid range */
	bool sensorInRange(double value);

	/** @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_t& bus;
	/** @brief name of sensor */
	std::string name;

	/** @brief Virtual sensor path in entityManager Dbus.
	* This value is used to set thresholds/create association
	*/
	std::string entityPath;
	/** @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 The maximum valid value for an input sensor /
	double maxValidInput = std::numeric_limits<double>::infinity();
	/ @brief The minimum valid value for an input sensor /
	double minValidInput = -std::numeric_limits<double>::infinity();

	/** @brief The critical threshold interface object */
	std::unique_ptr<Threshold<CriticalObject>> criticalIface;
	/** @brief The warning threshold interface object */
	std::unique_ptr<Threshold<WarningObject>> warningIface;
	/** @brief The soft shutdown threshold interface object */
	std::unique_ptr<Threshold<SoftShutdownObject>> softShutdownIface;
	/** @brief The hard shutdown threshold interface object */
	std::unique_ptr<Threshold<HardShutdownObject>> hardShutdownIface;
	/** @brief The performance loss threshold interface object */
	std::unique_ptr<Threshold<PerformanceLossObject>> perfLossIface;

	/** @brief The association interface object */
	std::unique_ptr<AssociationObject> associationIface;

	/** @brief Read config from json object and initialize sensor data
	* for each virtual sensor
	*/
	void initVirtualSensor(const Json& sensorConfig,
	const std::string& objPath);

	/** @brief Read config from interface map and initialize sensor data
	* for each virtual sensor
	*/
	void initVirtualSensor(const InterfaceMap& interfaceMap,
	const std::string& objPath,
	const std::string& sensorType,
	const std::string& calculationType);

	/** @brief Returns which calculation function or expression to use */
	double calculateValue(const std::string& sensortype,
	const VirtualSensor::ParamMap& paramMap);
	/** @brief Calculate median value from sensors */
	double
	calculateModifiedMedianValue(const VirtualSensor::ParamMap& paramMap);
	/** @brief Calculate maximum value from sensors */
	double calculateMaximumValue(const VirtualSensor::ParamMap& paramMap);
	/** @brief create threshold objects from json config */
	void createThresholds(const Json& threshold, const std::string& objPath);
	/ @brief parse config from entity manager /
	void parseConfigInterface(const PropertyMap& propertyMap,
	const std::string& sensorType,
	const std::string& interface);

	/** @brief Check Sensor threshold and update alarm and log */
	template <typename V, typename T>
	void checkThresholds(V value, T& threshold)
	{
	if (!threshold)
	return;

	static constexpr auto tname = T::element_type::name;

	auto alarmHigh = threshold->alarmHigh();
	auto highHysteresis = threshold->getHighHysteresis();
	if ((!alarmHigh && value >= threshold->high()) \|\|
	(alarmHigh && value < (threshold->high() - highHysteresis)))
	{
	if (!alarmHigh)
	{
	error("ASSERT: sensor {SENSOR} is above the upper threshold "
	"{THRESHOLD}.",
	"SENSOR", name, "THRESHOLD", tname);
	threshold->alarmHighSignalAsserted(value);
	}
	else
	{
	info("DEASSERT: sensor {SENSOR} is under the upper threshold "
	"{THRESHOLD}.",
	"SENSOR", name, "THRESHOLD", tname);
	threshold->alarmHighSignalDeasserted(value);
	}
	threshold->alarmHigh(!alarmHigh);
	}

	auto alarmLow = threshold->alarmLow();
	auto lowHysteresis = threshold->getLowHysteresis();
	if ((!alarmLow && value <= threshold->low()) \|\|
	(alarmLow && value > (threshold->low() + lowHysteresis)))
	{
	if (!alarmLow)
	{
	error("ASSERT: sensor {SENSOR} is below the lower threshold "
	"{THRESHOLD}.",
	"SENSOR", name, "THRESHOLD", tname);
	threshold->alarmLowSignalAsserted(value);
	}
	else
	{
	info("DEASSERT: sensor {SENSOR} is above the lower threshold "
	"{THRESHOLD}.",
	"SENSOR", name, "THRESHOLD", tname);
	threshold->alarmLowSignalDeasserted(value);
	}
	threshold->alarmLow(!alarmLow);
	}
	}

	/** @brief Create Association from entityPath*/
	void createAssociation(const std::string& objPath,
	const std::string& entityPath);
	};

	class VirtualSensors
	{
	public:
	VirtualSensors() = delete;
	virtual ~VirtualSensors() = default;

	/** @brief Constructs VirtualSensors
	*
	* @param[in] bus - Handle to system dbus
	*/
	explicit VirtualSensors(sdbusplus::bus_t& bus) : bus(bus)
	{
	createVirtualSensors();
	}
	/** @brief Calls createVirtualSensor when interface added */
	void propertiesChanged(sdbusplus::message_t& msg);

	private:
	/** @brief sdbusplus bus client connection. */
	sdbusplus::bus_t& bus;
	/ @brief Get virual sensor config from DBus/
	ManagedObjectType getObjectsFromDBus();
	/** @brief Parsing virtual sensor config JSON file */
	Json parseConfigFile();

	/** @brief Matches for virtual sensors */
	std::vector<std::unique_ptr<sdbusplus::bus::match_t>> matches;
	/** @brief Map of the object VirtualSensor */
	std::unordered_map<std::string, std::unique_ptr<VirtualSensor>>
	virtualSensorsMap;

	/** @brief Create list of virtual sensors from JSON config*/
	void createVirtualSensors();
	/** @brief Create list of virtual sensors from DBus config */
	void createVirtualSensorsFromDBus(const std::string& calculationType);
	/** @brief Setup matches for virtual sensors */
	void setupMatches();
	};

	} // namespace virtualSensor
	} // namespace phosphor