1 #pragma once 2 3 #include <phosphor-logging/elog.hpp> 4 #include <phosphor-logging/log.hpp> 5 #include <sdbusplus/bus.hpp> 6 #include <string> 7 8 namespace witherspoon 9 { 10 namespace power 11 { 12 namespace util 13 { 14 15 constexpr auto SYSTEMD_SERVICE = "org.freedesktop.systemd1"; 16 constexpr auto SYSTEMD_ROOT = "/org/freedesktop/systemd1"; 17 constexpr auto SYSTEMD_INTERFACE = "org.freedesktop.systemd1.Manager"; 18 constexpr auto POWEROFF_TARGET = "obmc-chassis-hard-poweroff@0.target"; 19 constexpr auto PROPERTY_INTF = "org.freedesktop.DBus.Properties"; 20 21 /** 22 * @brief Get the service name from the mapper for the 23 * interface and path passed in. 24 * 25 * @param[in] path - the D-Bus path name 26 * @param[in] interface - the D-Bus interface name 27 * @param[in] bus - the D-Bus object 28 * 29 * @return The service name 30 */ 31 std::string getService(const std::string& path, const std::string& interface, 32 sdbusplus::bus::bus& bus); 33 34 /** 35 * @brief Read a D-Bus property 36 * 37 * @param[in] interface - the interface the property is on 38 * @param[in] propertName - the name of the property 39 * @param[in] path - the D-Bus path 40 * @param[in] service - the D-Bus service 41 * @param[in] bus - the D-Bus object 42 * @param[out] value - filled in with the property value 43 */ 44 template <typename T> 45 void getProperty(const std::string& interface, const std::string& propertyName, 46 const std::string& path, const std::string& service, 47 sdbusplus::bus::bus& bus, T& value) 48 { 49 sdbusplus::message::variant<T> property; 50 51 auto method = bus.new_method_call(service.c_str(), path.c_str(), 52 PROPERTY_INTF, "Get"); 53 54 method.append(interface, propertyName); 55 56 auto reply = bus.call(method); 57 58 reply.read(property); 59 value = sdbusplus::message::variant_ns::get<T>(property); 60 } 61 62 /** 63 * @brief Write a D-Bus property 64 * 65 * @param[in] interface - the interface the property is on 66 * @param[in] propertName - the name of the property 67 * @param[in] path - the D-Bus path 68 * @param[in] service - the D-Bus service 69 * @param[in] bus - the D-Bus object 70 * @param[in] value - the value to set the property to 71 */ 72 template <typename T> 73 void setProperty(const std::string& interface, const std::string& propertyName, 74 const std::string& path, const std::string& service, 75 sdbusplus::bus::bus& bus, T& value) 76 { 77 sdbusplus::message::variant<T> propertyValue(value); 78 79 auto method = bus.new_method_call(service.c_str(), path.c_str(), 80 PROPERTY_INTF, "Set"); 81 82 method.append(interface, propertyName, propertyValue); 83 84 auto reply = bus.call(method); 85 } 86 87 /** 88 * Logs an error and powers off the system. 89 * 90 * @tparam T - error that will be logged before the power off 91 * @param[in] bus - D-Bus object 92 */ 93 template <typename T> 94 void powerOff(sdbusplus::bus::bus& bus) 95 { 96 phosphor::logging::report<T>(); 97 98 auto method = bus.new_method_call(SYSTEMD_SERVICE, SYSTEMD_ROOT, 99 SYSTEMD_INTERFACE, "StartUnit"); 100 101 method.append(POWEROFF_TARGET); 102 method.append("replace"); 103 104 bus.call_noreply(method); 105 } 106 107 } // namespace util 108 } // namespace power 109 } // namespace witherspoon 110