1 #include "power_status_monitor.hpp" 2 3 #include "phosphor-logging/lg2.hpp" 4 #include "utils.hpp" 5 6 #include <sdbusplus/bus/match.hpp> 7 8 #include <flat_map> 9 10 namespace power 11 { 12 13 const static constexpr char* busname = "xyz.openbmc_project.State.Host"; 14 const static constexpr char* interface = "xyz.openbmc_project.State.Host"; 15 const static constexpr char* path = "/xyz/openbmc_project/state/host0"; 16 const static constexpr char* property = "CurrentHostState"; 17 18 PowerStatusMonitor::PowerStatusMonitor(sdbusplus::asio::connection& conn) : 19 20 powerMatch(static_cast<sdbusplus::bus_t&>(conn), 21 "type='signal',interface='" + 22 std::string(em_utils::properties::interface) + "',path='" + 23 std::string(power::path) + "',arg0='" + 24 std::string(power::interface) + "'", 25 std::bind_front(&PowerStatusMonitor::handlePowerMatch, this)) 26 27 { 28 getInitialPowerStatus(conn); 29 } 30 31 bool PowerStatusMonitor::isPowerOn() const 32 { 33 return powerStatusOn; 34 } 35 36 void PowerStatusMonitor::handlePowerMatch(sdbusplus::message_t& message) 37 { 38 lg2::debug("power match triggered"); 39 40 std::string objectName; 41 std::flat_map<std::string, std::variant<std::string>> values; 42 message.read(objectName, values); 43 auto findState = values.find(power::property); 44 if (findState != values.end()) 45 { 46 powerStatusOn = 47 std::get<std::string>(findState->second).ends_with("Running"); 48 } 49 } 50 51 void PowerStatusMonitor::getInitialPowerStatus( 52 sdbusplus::asio::connection& conn) 53 { 54 conn.async_method_call( 55 [this](boost::system::error_code ec, 56 const std::variant<std::string>& state) { 57 if (ec) 58 { 59 return; 60 } 61 powerStatusOn = std::get<std::string>(state).ends_with("Running"); 62 }, 63 power::busname, power::path, em_utils::properties::interface, 64 em_utils::properties::get, power::interface, power::property); 65 } 66 67 } // namespace power 68