fw-inventory: Add RelatedItem to inventory

Added TODO reference for BIOS reference. This commit is required:
https://gerrit.openbmc-project.xyz/#/c/openbmc/bmcweb/+/16775/

Tested:

VERBO - SoftwareInventory.v1_1_0.SoftwareInventory:RelatedItem
VERBO -         value: [OrderedDict([('@odata.id', '/redfish/v1/Managers/bmc')])] <class 'list'>
VERBO -         has Type: Collection(Resource.Item) entity
VERBO -         is Optional
VERBO -         permission OData.Permission/Read
VERBO -         is Collection
VERBO -         Success

curl -k -H "X-Auth-Token: $TOKEN" -X GET https://${BMC_IP}/redfish/v1/UpdateService/FirmwareInventory/969635f8
{
  "@odata.context": "/redfish/v1/$metadata#SoftwareInventory.SoftwareInventory",
  "@odata.id": "/redfish/v1/UpdateService/FirmwareInventory/969635f8",
  "@odata.type": "#SoftwareInventory.v1_1_0.SoftwareInventory",
  "Description": "BMC update",
  "Id": "969635f8",
  "Members@odata.count": 1,
  "Name": "Software Inventory",
  "RelatedItem": [
    {
      "@odata.id": "/redfish/v1/Managers/bmc"
    }
  ],
  "Status": {
    "Health": "OK",
    "HealthRollup": "OK",
    "State": "Enabled"
  },
  "Updateable": false,
  "Version": "2.6.0-rc1-312-g8d6abcd6d"
}

With the TODO code un-commented, this is the output:
curl -k -H "X-Auth-Token: $TOKEN" -X GET https://${BMC_IP}/redfish/v1/UpdateService/FirmwareInventory/ace821ef
{
  "@odata.context": "/redfish/v1/$metadata#SoftwareInventory.SoftwareInventory",
  "@odata.id": "/redfish/v1/UpdateService/FirmwareInventory/ace821ef",
  "@odata.type": "#SoftwareInventory.v1_1_0.SoftwareInventory",
  "Description": "Host update",
  "Id": "ace821ef",
  "Members@odata.count": 1,
  "Name": "Software Inventory",
  "RelatedItem": [
    {
      "@odata.id": "/redfish/v1/Systems/system/BIOS"
    }
  ],
  "Status": {
    "Health": "OK",
    "HealthRollup": "OK",
    "State": "Enabled"
  },
  "Updateable": false,
  "Version": "IBM-witherspoon-OP9-v2.0.10-2.22"
}

Change-Id: Iae563a938532c6f53f41c8fc5c758693155be1a0
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/redfish-core/lib/update_service.hpp b/redfish-core/lib/update_service.hpp
index d3d30c2029..aaaf85baf4 100644
--- a/redfish-core/lib/update_service.hpp
+++ b/redfish-core/lib/update_service.hpp
@@ -18,6 +18,7 @@
 #include "node.hpp"
 
 #include <boost/container/flat_map.hpp>
+#include <utils/fw_utils.hpp>
 #include <variant>
 
 namespace redfish
@@ -320,6 +321,31 @@ class SoftwareInventory : public Node
     }
 
   private:
+    /* Fill related item links (i.e. bmc, bios) in for inventory */
+    static void getRelatedItems(std::shared_ptr<AsyncResp> aResp,
+                                const std::string &purpose)
+    {
+        if (purpose == fw_util::bmcPurpose)
+        {
+            nlohmann::json &members = aResp->res.jsonValue["RelatedItem"];
+            members.push_back({{"@odata.id", "/redfish/v1/Managers/bmc"}});
+            aResp->res.jsonValue["Members@odata.count"] = members.size();
+        }
+        else if (purpose == fw_util::biosPurpose)
+        {
+            // TODO(geissonator) Need BIOS schema support added for this
+            //                   to be valid
+            // nlohmann::json &members = aResp->res.jsonValue["RelatedItem"];
+            // members.push_back(
+            //    {{"@odata.id", "/redfish/v1/Systems/system/BIOS"}});
+            // aResp->res.jsonValue["Members@odata.count"] = members.size();
+        }
+        else
+        {
+            BMCWEB_LOG_ERROR << "Unknown software purpose " << purpose;
+        }
+    }
+
     void doGet(crow::Response &res, const crow::Request &req,
                const std::vector<std::string> &params) override
     {
@@ -458,6 +484,7 @@ class SoftwareInventory : public Node
                                 swInvPurpose->substr(endDesc);
                             asyncResp->res.jsonValue["Description"] =
                                 formatDesc + " update";
+                            getRelatedItems(asyncResp, *swInvPurpose);
                         },
                         obj.second[0].first, obj.first,
                         "org.freedesktop.DBus.Properties", "GetAll",