Support counting mpus in count items

- The MPU parts size are part of the current size of the bucket
- Only the count of overview keys are part of the object count
- The metrics are detailed in a field
- The getObjectMDStats function is updated: the logic to process
  each cursor's entry is shared, and mpu entries are processed
  in the same way as the regular objects, with some specifics.

Issue: S3UTILS-186

CountItems/utils/utils.js

@@ -18,6 +18,7 @@ function consolidateDataMetrics(target, source) {
                 _nonCurrentRestored: 0,
                 _nonCurrentRestoring: 0,
                 _inflightsPreScan: 0,
+                _incompleteMPUParts: 0,
             },
         });
     }
@@ -32,6 +33,7 @@ function consolidateDataMetrics(target, source) {
                 _currentRestoring: 0,
                 _nonCurrentRestored: 0,
                 _nonCurrentRestoring: 0,
+                _incompleteMPUParts: 0,
                 deleteMarker: 0,
             },
         });
@@ -48,6 +50,7 @@ function consolidateDataMetrics(target, source) {
     resTarget.usedCapacity._currentRestored += usedCapacity && usedCapacity._currentRestored ? usedCapacity._currentRestored : 0;
     resTarget.usedCapacity._nonCurrentRestoring += usedCapacity && usedCapacity._nonCurrentRestoring ? usedCapacity._nonCurrentRestoring : 0;
     resTarget.usedCapacity._nonCurrentRestored += usedCapacity && usedCapacity._nonCurrentRestored ? usedCapacity._nonCurrentRestored : 0;
+    resTarget.usedCapacity._incompleteMPUParts += usedCapacity && usedCapacity._incompleteMPUParts ? usedCapacity._incompleteMPUParts : 0;
 
     resTarget.objectCount.current += objectCount && objectCount.current ? objectCount.current : 0;
     resTarget.objectCount.nonCurrent += objectCount && objectCount.nonCurrent ? objectCount.nonCurrent : 0;
@@ -58,18 +61,21 @@ function consolidateDataMetrics(target, source) {
     resTarget.objectCount._currentRestored += objectCount && objectCount._currentRestored ? objectCount._currentRestored : 0;
     resTarget.objectCount._nonCurrentRestoring += objectCount && objectCount._nonCurrentRestoring ? objectCount._nonCurrentRestoring : 0;
     resTarget.objectCount._nonCurrentRestored += objectCount && objectCount._nonCurrentRestored ? objectCount._nonCurrentRestored : 0;
+    resTarget.objectCount._incompleteMPUParts += objectCount && objectCount._incompleteMPUParts ? objectCount._incompleteMPUParts : 0;
 
     resTarget.usedCapacity._inflightsPreScan += usedCapacity && usedCapacity._inflightsPreScan ? usedCapacity._inflightsPreScan : 0;
     if (accountOwnerID) {
         resTarget.accountOwnerID = accountOwnerID;
     }
 
     resTarget.usedCapacity.current += usedCapacity
-        ? usedCapacity._currentCold + usedCapacity._currentRestored + usedCapacity._currentRestoring : 0;
+        ? usedCapacity._currentCold + usedCapacity._currentRestored + usedCapacity._currentRestoring
+        + usedCapacity._incompleteMPUParts : 0;
     resTarget.usedCapacity.nonCurrent += usedCapacity
         ? usedCapacity._nonCurrentCold + usedCapacity._nonCurrentRestored + usedCapacity._nonCurrentRestoring : 0;
     resTarget.objectCount.current += objectCount
-        ? objectCount._currentCold + objectCount._currentRestored + objectCount._currentRestoring : 0;
+        ? objectCount._currentCold + objectCount._currentRestored + objectCount._currentRestoring
+        + objectCount._incompleteMPUParts : 0;
     resTarget.objectCount.nonCurrent += objectCount
         ? objectCount._nonCurrentCold + objectCount._nonCurrentRestored + objectCount._nonCurrentRestoring : 0;