Add Health information for FabricAdapter

This commit is to add health information according to the Redfish
FabricAdapter schema. If the
`xyz.openbmc_project.State.Decorator.OperationalStatus` interface does
not exist, the health information property is not displayed.
ref: http://redfish.dmtf.org/schemas/v1/FabricAdapter.v1_4_0.json

Tested: Validator passes #
```
curl -k  https://$bmc/redfish/v1/Systems/system/FabricAdapters/disk_backplane0
{
  "@odata.id": "/redfish/v1/Systems/system/FabricAdapters/disk_backplane0",
  "@odata.type": "#FabricAdapter.v1_4_0.FabricAdapter",
  "Id": "disk_backplane0",
  "Location": {
    "PartLocation": {
      "ServiceLabel": "U78DA.ND0.WZS0042-P1"
    }
  },
  "Model": "6B89",
  "Name": "Fabric Adapter",
  "PartNumber": "02WG682",
  "SerialNumber": "YA31UF09P002",
  "SparePartNumber": "02WG681",
  "Status": {
    "Health": "OK",
    "State": "Enabled"
  }
}
```

Change-Id: I1fc4549fbac37189e29ba5e49137634b14a08a36
Signed-off-by: Lakshmi Yadlapati <lakshmiy@us.ibm.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/redfish-core/lib/fabric_adapters.hpp b/redfish-core/lib/fabric_adapters.hpp
index ba52e679c3..768a2f735f 100644
--- a/redfish-core/lib/fabric_adapters.hpp
+++ b/redfish-core/lib/fabric_adapters.hpp
@@ -144,6 +144,32 @@ inline void
         });
 }
 
+inline void
+    getFabricAdapterHealth(const std::shared_ptr<bmcweb::AsyncResp>& aResp,
+                           const std::string& serviceName,
+                           const std::string& fabricAdapterPath)
+{
+    sdbusplus::asio::getProperty<bool>(
+        *crow::connections::systemBus, serviceName, fabricAdapterPath,
+        "xyz.openbmc_project.State.Decorator.OperationalStatus", "Functional",
+        [aResp](const boost::system::error_code ec, const bool functional) {
+        if (ec)
+        {
+            if (ec.value() != EBADR)
+            {
+                BMCWEB_LOG_ERROR << "DBUS response error for Health";
+                messages::internalError(aResp->res);
+            }
+            return;
+        }
+
+        if (!functional)
+        {
+            aResp->res.jsonValue["Status"]["Health"] = "Critical";
+        }
+        });
+}
+
 inline void doAdapterGet(const std::shared_ptr<bmcweb::AsyncResp>& aResp,
                          const std::string& systemName,
                          const std::string& adapterId,
@@ -160,10 +186,12 @@ inline void doAdapterGet(const std::shared_ptr<bmcweb::AsyncResp>& aResp,
         "redfish", "v1", "Systems", systemName, "FabricAdapters", adapterId);
 
     aResp->res.jsonValue["Status"]["State"] = "Enabled";
+    aResp->res.jsonValue["Status"]["Health"] = "OK";
 
     getFabricAdapterLocation(aResp, serviceName, fabricAdapterPath);
     getFabricAdapterAsset(aResp, serviceName, fabricAdapterPath);
     getFabricAdapterState(aResp, serviceName, fabricAdapterPath);
+    getFabricAdapterHealth(aResp, serviceName, fabricAdapterPath);
 }
 
 inline bool checkFabricAdapterId(const std::string& adapterPath,