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
PowerStatusMonitor(sdbusplus::asio::connection & conn)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
isPowerOn() const31 bool PowerStatusMonitor::isPowerOn() const
32 {
33 return powerStatusOn;
34 }
35
handlePowerMatch(sdbusplus::message_t & message)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
getInitialPowerStatus(sdbusplus::asio::connection & conn)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