1 #pragma once 2 3 #include "dbushelper_interface.hpp" 4 5 #include <phosphor-logging/log.hpp> 6 #include <sdbusplus/bus.hpp> 7 8 #include <string> 9 #include <variant> 10 11 namespace pid_control 12 { 13 14 class DbusHelper : public DbusHelperInterface 15 { 16 public: 17 static constexpr char sensorintf[] = "xyz.openbmc_project.Sensor.Value"; 18 static constexpr char propertiesintf[] = "org.freedesktop.DBus.Properties"; 19 static constexpr char criticalThreshInf[] = 20 "xyz.openbmc_project.Sensor.Threshold.Critical"; 21 22 explicit DbusHelper(sdbusplus::bus::bus bus) : _bus(std::move(bus)) 23 {} 24 ~DbusHelper() = default; 25 26 DbusHelper(const DbusHelper&) = delete; 27 DbusHelper& operator=(const DbusHelper&) = delete; 28 29 DbusHelper(DbusHelper&&) = default; 30 DbusHelper& operator=(DbusHelper&&) = default; 31 32 std::string getService(const std::string& intf, 33 const std::string& path) override; 34 35 void getProperties(const std::string& service, const std::string& path, 36 SensorProperties* prop) override; 37 38 bool thresholdsAsserted(const std::string& service, 39 const std::string& path) override; 40 41 template <typename T> 42 void getProperty(const std::string& service, const std::string& path, 43 const std::string& interface, 44 const std::string& propertyName, T& prop) 45 { 46 namespace log = phosphor::logging; 47 48 auto msg = _bus.new_method_call(service.c_str(), path.c_str(), 49 propertiesintf, "Get"); 50 51 msg.append(interface, propertyName); 52 53 std::variant<T> result; 54 try 55 { 56 auto valueResponseMsg = _bus.call(msg); 57 valueResponseMsg.read(result); 58 } 59 catch (const sdbusplus::exception::exception& ex) 60 { 61 log::log<log::level::ERR>("Get Property Failed", 62 log::entry("WHAT=%s", ex.what())); 63 throw; 64 } 65 66 prop = std::get<T>(result); 67 } 68 69 private: 70 sdbusplus::bus::bus _bus; 71 }; 72 73 } // namespace pid_control 74