1 #include <phosphor-logging/elog-errors.hpp> 2 #include <phosphor-logging/log.hpp> 3 #include <xyz/openbmc_project/Common/error.hpp> 4 5 const char* propIntf = "org.freedesktop.DBus.Properties"; 6 const char* mapperBusName = "xyz.openbmc_project.ObjectMapper"; 7 const char* mapperPath = "/xyz/openbmc_project/object_mapper"; 8 const char* mapperIntf = "xyz.openbmc_project.ObjectMapper"; 9 10 const char* methodGetObject = "GetObject"; 11 const char* methodGet = "Get"; 12 13 using namespace phosphor::logging; 14 using namespace sdbusplus::xyz::openbmc_project::Common::Error; 15 16 using Value = std::variant<int64_t, double, std::string, bool>; 17 18 std::string getService(sdbusplus::bus::bus& bus, const std::string& path, 19 const char* intf) 20 { 21 /* Get mapper object for sensor path */ 22 auto mapper = bus.new_method_call(mapperBusName, mapperPath, mapperIntf, 23 methodGetObject); 24 25 mapper.append(path.c_str()); 26 mapper.append(std::vector<std::string>({intf})); 27 28 std::unordered_map<std::string, std::vector<std::string>> resp; 29 30 try 31 { 32 auto msg = bus.call(mapper); 33 34 msg.read(resp); 35 if (msg.is_method_error()) 36 { 37 log<level::ERR>("Error in mapper call"); 38 elog<InternalFailure>(); 39 } 40 } 41 catch (const sdbusplus::exception::SdBusError& ex) 42 { 43 log<level::ERR>("ObjectMapper call failure", 44 entry("WHAT=%s", ex.what())); 45 throw; 46 } 47 48 if (resp.begin() == resp.end()) 49 { 50 throw std::runtime_error("Unable to find Object: " + path); 51 } 52 53 return resp.begin()->first; 54 } 55 56 template <typename T> 57 58 T getDbusProperty(sdbusplus::bus::bus& bus, const std::string& service, 59 const std::string& path, const std::string& intf, 60 const std::string& property) 61 { 62 63 Value value; 64 65 auto method = 66 bus.new_method_call(service.c_str(), path.c_str(), propIntf, methodGet); 67 68 method.append(intf, property); 69 70 auto msg = bus.call(method); 71 72 if (msg.is_method_error()) 73 { 74 log<level::ERR>("Failed to get property", 75 entry("PROPERTY=%s", property.c_str()), 76 entry("PATH=%s", path.c_str()), 77 entry("INTERFACE=%s", intf.c_str())); 78 elog<InternalFailure>(); 79 } 80 81 msg.read(value); 82 83 return std::get<T>(value); 84 } 85