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#include <algorithm>
#include <phosphor-logging/log.hpp>
#include "fan_enclosure.hpp"


namespace phosphor
{
namespace fan
{
namespace presence
{

using namespace phosphor::logging;

//TODO Should get these from phosphor-objmgr config.h
constexpr auto MAPPER_BUSNAME = "xyz.openbmc_project.ObjectMapper";
constexpr auto MAPPER_PATH = "/xyz/openbmc_project/ObjectMapper";
constexpr auto MAPPER_INTERFACE = "xyz.openbmc_project.ObjectMapper";

//TODO Should get these from phosphor-inventory-manager config.h
constexpr auto INVENTORY_PATH = "/xyz/openbmc_project/inventory";
constexpr auto INVENTORY_INTF = "xyz.openbmc_project.Inventory.Manager";

FanEnclosure::ObjectMap FanEnclosure::getObjectMap()
{
    ObjectMap invObj;
    InterfaceMap invIntf;
    PropertyMap invProp;
    auto presPred = [](auto const& s) {return s->isPresent();};
    // Determine if all sensors show fan is not present
    auto isPresent = std::any_of(sensors.begin(),
                                 sensors.end(),
                                 presPred);
    invProp.emplace("Present", isPresent);
    invProp.emplace("PrettyName", fanDesc);
    invIntf.emplace("xyz.openbmc_project.Inventory.Item", std::move(invProp));
    Object fanInvPath = invPath;
    invObj.emplace(std::move(fanInvPath), std::move(invIntf));

    return invObj;
}

std::string FanEnclosure::getInvService()
{
    auto mapperCall = bus.new_method_call(MAPPER_BUSNAME,
                                          MAPPER_PATH,
                                          MAPPER_INTERFACE,
                                          "GetObject");

    mapperCall.append(INVENTORY_PATH);
    mapperCall.append(std::vector<std::string>({INVENTORY_INTF}));

    auto mapperResponseMsg = bus.call(mapperCall);
    if (mapperResponseMsg.is_method_error())
    {
        throw std::runtime_error(
            "Error in mapper call to get inventory service name");
    }

    std::map<std::string, std::vector<std::string>> mapperResponse;
    mapperResponseMsg.read(mapperResponse);

    if (mapperResponse.empty())
    {
        throw std::runtime_error(
            "Error in mapper response for inventory service name");
    }

    return mapperResponse.begin()->first;
}

void FanEnclosure::updInventory()
{
    //Get inventory object for this fan
    ObjectMap invObj = getObjectMap();
    //Get inventory manager service name from mapper
    std::string invService;
    try
    {
        invService = getInvService();
    }
    catch (const std::runtime_error& err)
    {
        log<level::ERR>(err.what());
        return;
    }
    // Update inventory for this fan
    auto invMsg = bus.new_method_call(invService.c_str(),
                                      INVENTORY_PATH,
                                      INVENTORY_INTF,
                                      "Notify");
    invMsg.append(std::move(invObj));
    auto invMgrResponseMsg = bus.call(invMsg);
    if (invMgrResponseMsg.is_method_error())
    {
        log<level::ERR>(
            "Error in inventory manager call to update inventory");
        return;
    }
}

void FanEnclosure::addSensor(
    std::unique_ptr<Sensor>&& sensor)
{
    FanEnclosure::sensors.push_back(std::move(sensor));
}

} // namespace presence
} // namespace fan
} // namespace phosphor
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