phosphor-power-supply/util.hpp

#pragma once
#include "util_base.hpp"
#include "utility.hpp"
#include "xyz/openbmc_project/Common/error.hpp"

#include <fmt/format.h>

#include <gpiod.hpp>
#include <phosphor-logging/elog-errors.hpp>
#include <phosphor-logging/elog.hpp>
#include <phosphor-logging/log.hpp>

#include <bitset>

namespace phosphor::power::psu
{

class Util : public UtilBase
{
  public:
    bool getPresence(sdbusplus::bus::bus& bus,
                     const std::string& invpath) const override
    {
        bool present = false;

        // Use getProperty utility function to get presence status.
        util::getProperty(INVENTORY_IFACE, PRESENT_PROP, invpath,
                          INVENTORY_MGR_IFACE, bus, present);

        return present;
    }

    void setPresence(sdbusplus::bus::bus& bus, const std::string& invpath,
                     bool present, const std::string& name) const override
    {
        using InternalFailure =
            sdbusplus::xyz::openbmc_project::Common::Error::InternalFailure;
        using Property = std::string;
        using Value = std::variant<bool, std::string>;
        // Association between property and its value
        using PropertyMap = std::map<Property, Value>;
        PropertyMap invProp;

        invProp.emplace("Present", present);
        invProp.emplace("PrettyName", name);

        using Interface = std::string;
        // Association between interface and the D-Bus property map
        using InterfaceMap = std::map<Interface, PropertyMap>;
        InterfaceMap invIntf;
        invIntf.emplace("xyz.openbmc_project.Inventory.Item",
                        std::move(invProp));

        Interface extraIface = "xyz.openbmc_project.Inventory.Item.PowerSupply";

        invIntf.emplace(extraIface, PropertyMap());

        using Object = sdbusplus::message::object_path;
        // Association between object and the interface map
        using ObjectMap = std::map<Object, InterfaceMap>;
        ObjectMap invObj;
        invObj.emplace(std::move(invpath), std::move(invIntf));

        using namespace phosphor::logging;
        log<level::INFO>(fmt::format("Updating inventory present property. "
                                     "present:{} invpath:{} name:{}",
                                     present, invpath, name)
                             .c_str());

        try
        {
            auto invService = phosphor::power::util::getService(
                INVENTORY_OBJ_PATH, INVENTORY_MGR_IFACE, bus);

            // Update inventory
            auto invMsg =
                bus.new_method_call(invService.c_str(), INVENTORY_OBJ_PATH,
                                    INVENTORY_MGR_IFACE, "Notify");
            invMsg.append(std::move(invObj));
            auto invMgrResponseMsg = bus.call(invMsg);
        }
        catch (const std::exception& e)
        {
            log<level::ERR>(
                fmt::format(
                    "Error in inventory manager call to update inventory: {}",
                    e.what())
                    .c_str());
            elog<InternalFailure>();
        }
    }
};

std::unique_ptr<GPIOInterfaceBase> createGPIO(const std::string& namedGpio);

class GPIOInterface : public GPIOInterfaceBase
{
  public:
    GPIOInterface() = delete;
    virtual ~GPIOInterface() = default;
    GPIOInterface(const GPIOInterface&) = default;
    GPIOInterface& operator=(const GPIOInterface&) = default;
    GPIOInterface(GPIOInterface&&) = default;
    GPIOInterface& operator=(GPIOInterface&&) = default;

    /**
     * Constructor
     *
     * @param[in] namedGpio - The string for the gpio-line-name
     */
    GPIOInterface(const std::string& namedGpio);

    static std::unique_ptr<GPIOInterfaceBase>
        createGPIO(const std::string& namedGpio);

    /**
     * @brief Attempts to read the state of the GPIO line.
     *
     * Throws an exception if line not found, request line fails, or get_value
     * from line fails.
     *
     * @return 1 for active (low/present), 0 for not active (high/not present).
     */
    int read() override;

    /**
     * @brief Attempts to set the state of the GPIO line to the specified value.
     *
     * Throws an exception if line not found, request line fails, or set_value
     * to line fails.
     *
     * @param[in] value - The value to set the state of the GPIO line, 1 or 0.
     * @param[in] flags - Additional line request flags as defined in gpiod.hpp.
     */
    void write(int value, std::bitset<32> flags) override;

    /**
     * @brief Returns the name of the GPIO, if not empty.
     */
    std::string getName() const override;

  private:
    gpiod::line line;
};

} // namespace phosphor::power::psu