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::SdBusError& 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