SERVER-29620 Add shorthand syntax for retrieving the record count for a collection using the agg stage

1 files changed, 8 insertions, 1 deletions

diff --git a/src/mongo/db/stats/storage_stats.h b/src/mongo/db/stats/storage_stats.h
index 0f62229c80a..f3a3db99b9b 100644
--- a/src/mongo/db/stats/storage_stats.h
+++ b/src/mongo/db/stats/storage_stats.h
@@ -38,10 +38,17 @@ namespace mongo {
 
 /**
  * Appends to 'builder' storage related statistics for the collection represented by 'nss'.
- * Used by both the collStats command and the $collStats aggregation stage.
  */
 Status appendCollectionStorageStats(OperationContext* opCtx,
                                     const NamespaceString& nss,
                                     const BSONObj& param,
                                     BSONObjBuilder* builder);
+
+/**
+ * Appends the collection record count to 'builder' for the collection represented by 'nss'.
+ */
+Status appendCollectionRecordCount(OperationContext* opCtx,
+                                   const NamespaceString& nss,
+                                   BSONObjBuilder* builder);
+
 };  // namespace mongo