blob: 5c119a5cd4b80bea39ee7da51e0bbe26590d0633 [file] [log] [blame]
#include "dbusUtils.hpp"
#include <sdbusplus/bus.hpp>
#include <sdbusplus/bus/match.hpp>
const char* sensorIntf = "xyz.openbmc_project.Sensor.Value";
int handleDbusSignal(sd_bus_message* msg, void* usrData, sd_bus_error* err);
class DbusSensor
{
public:
DbusSensor() = delete;
virtual ~DbusSensor() = default;
/** @brief Constructs DbusSensor
*
* @param[in] bus - Handle to system dbus
* @param[in] path - The Dbus path of sensor
*/
DbusSensor(sdbusplus::bus_t& bus, const std::string& path, void* ctx) :
bus(bus), path(path),
signal(
bus,
sdbusplus::bus::match::rules::propertiesChanged(path, sensorIntf),
handleDbusSignal, ctx)
{}
/** @brief Get sensor value property from D-bus interface */
double getSensorValue()
{
if (servName.empty())
{
servName = getService(bus, path, sensorIntf);
if (servName.empty())
{
return std::numeric_limits<double>::quiet_NaN();
}
}
try
{
return getDbusProperty<double>(bus, servName, path, sensorIntf,
"Value");
}
catch (const std::exception& e)
{
return std::numeric_limits<double>::quiet_NaN();
}
}
private:
/** @brief sdbusplus bus client connection. */
sdbusplus::bus_t& bus;
/** @brief complete path for sensor */
std::string path{};
/** @brief service name for the sensor daemon */
std::string servName{};
/** @brief signal for sensor value change */
sdbusplus::bus::match_t signal;
};