redfish-core/include/utils/collection.hpp

#pragma once

#include <human_sort.hpp>

#include <string>
#include <vector>

namespace redfish
{
namespace collection_util
{

/**
 * @brief Populate the collection "Members" from a GetSubTreePaths search of
 *        inventory
 *
 * @param[i,o] aResp  Async response object
 * @param[i]   collectionPath  Redfish collection path which is used for the
 *             Members Redfish Path
 * @param[i]   interfaces  List of interfaces to constrain the GetSubTree search
 * @param[in]  subtree     D-Bus base path to constrain search to.
 *
 * @return void
 */
inline void
    getCollectionMembers(std::shared_ptr<bmcweb::AsyncResp> aResp,
                         const std::string& collectionPath,
                         const std::vector<const char*>& interfaces,
                         const char* subtree = "/xyz/openbmc_project/inventory")
{
    BMCWEB_LOG_DEBUG << "Get collection members for: " << collectionPath;
    crow::connections::systemBus->async_method_call(
        [collectionPath, aResp{std::move(aResp)}](
            const boost::system::error_code ec,
            const dbus::utility::MapperGetSubTreePathsResponse& objects) {
            if (ec == boost::system::errc::io_error)
            {
                aResp->res.jsonValue["Members"] = nlohmann::json::array();
                aResp->res.jsonValue["Members@odata.count"] = 0;
                return;
            }

            if (ec)
            {
                BMCWEB_LOG_DEBUG << "DBUS response error " << ec.value();
                messages::internalError(aResp->res);
                return;
            }

            std::vector<std::string> pathNames;
            for (const auto& object : objects)
            {
                sdbusplus::message::object_path path(object);
                std::string leaf = path.filename();
                if (leaf.empty())
                {
                    continue;
                }
                pathNames.push_back(leaf);
            }
            std::sort(pathNames.begin(), pathNames.end(),
                      AlphanumLess<std::string>());

            nlohmann::json& members = aResp->res.jsonValue["Members"];
            members = nlohmann::json::array();
            for (const std::string& leaf : pathNames)
            {
                std::string newPath = collectionPath;
                newPath += '/';
                newPath += leaf;
                members.push_back({{"@odata.id", std::move(newPath)}});
            }
            aResp->res.jsonValue["Members@odata.count"] = members.size();
        },
        "xyz.openbmc_project.ObjectMapper",
        "/xyz/openbmc_project/object_mapper",
        "xyz.openbmc_project.ObjectMapper", "GetSubTreePaths", subtree, 0,
        interfaces);
}

} // namespace collection_util
} // namespace redfish