Add basic PowerControl and PowerLimit properties

Add code in the power-specific response handler to fetch the Power Limit
value for the chassis that implements the Chassis inventory item. Add a
special case to the generic sensor handling code to place the
total_power value into the PowerControl PowerConsumedWatts field.

curl -k https://${bmc}/redfish/v1/Chassis/chassis/Power
{
  "@odata.context": "/redfish/v1/$metadata#Power.Power",
  "@odata.id": "/redfish/v1/Chassis/chassis/Power",
  "@odata.type": "#Power.v1_5_2.Power",
  "Id": "Power",
  "Name": "Power",
  "PowerControl": [
    {
      "@odata.id": "/redfish/v1/Chassis/chassis/Power#/PowerControl/",
      "MemberId": "total_power",
      "Name": "total power",
      "PowerConsumedWatts": 269.0,
      "Status": {
        "Health": "OK",
        "State": "Enabled"
      }
    }
  ],
  "PowerLimit": [
    {
      "LimitInWatts": null
    }
  ],

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Change-Id: I447de59fb44a4ecbe7b47610d915ac22aef90250

1 files changed, 19 insertions, 3 deletions

diff --git a/redfish-core/lib/sensors.hpp b/redfish-core/lib/sensors.hpp
index c44ff71d8c..86e5a07986 100644
--- a/redfish-core/lib/sensors.hpp
+++ b/redfish-core/lib/sensors.hpp
@@ -32,7 +32,7 @@ using GetSubTreeType = std::vector<
     std::pair<std::string,
               std::vector<std::pair<std::string, std::vector<std::string>>>>>;
 
-using SensorVariant = std::variant<int64_t, double>;
+using SensorVariant = std::variant<int64_t, double, uint32_t, bool>;
 
 using ManagedObjectsVectorType = std::vector<std::pair<
     sdbusplus::message::object_path,
@@ -484,7 +484,11 @@ void objectInterfacesToJson(
         std::string sensorNameLower =
             boost::algorithm::to_lower_copy(sensorName);
 
-        if (sensorNameLower.find("input") != std::string::npos)
+        if (!sensorName.compare("total_power"))
+        {
+            unit = "PowerConsumedWatts";
+        }
+        else if (sensorNameLower.find("input") != std::string::npos)
         {
             unit = "PowerInputWatts";
         }
@@ -550,6 +554,7 @@ void objectInterfacesToJson(
                 const int64_t* int64Value = std::get_if<int64_t>(&valueVariant);
 
                 const double* doubleValue = std::get_if<double>(&valueVariant);
+                const uint32_t* uValue = std::get_if<uint32_t>(&valueVariant);
                 double temp = 0.0;
                 if (int64Value != nullptr)
                 {
@@ -559,6 +564,10 @@ void objectInterfacesToJson(
                 {
                     temp = *doubleValue;
                 }
+                else if (uValue != nullptr)
+                {
+                    temp = *uValue;
+                }
                 else
                 {
                     BMCWEB_LOG_ERROR
@@ -920,7 +929,14 @@ void getSensorData(
                 }
                 else if (sensorType == "power")
                 {
-                    fieldName = "PowerSupplies";
+                    if (!sensorName.compare("total_power"))
+                    {
+                        fieldName = "PowerControl";
+                    }
+                    else
+                    {
+                        fieldName = "PowerSupplies";
+                    }
                 }
                 else
                 {