Add new admin API to return Accounting Usage (#8689)

pkg/iam/policy/actionset.go

@@ -32,6 +32,11 @@ func (actionSet ActionSet) Add(action Action) {
 	actionSet[action] = struct{}{}
 }
 
+// IsEmpty - returns if the current action set is empty
+func (actionSet ActionSet) IsEmpty() bool {
+	return len(actionSet) == 0
+}
+
 // Match - matches object name with anyone of action pattern in action set.
 func (actionSet ActionSet) Match(action Action) bool {
 	for r := range actionSet {

pkg/iam/policy/admin-action.go

@@ -31,6 +31,8 @@ const (
 
 	// StorageInfoAdminAction - allow listing server info
 	StorageInfoAdminAction = "admin:StorageInfo"
+	// AccountingUsageInfoAdminAction - allow listing accounting usage info
+	AccountingUsageInfoAdminAction = "admin:AccountingUsageInfo"
 	// DataUsageInfoAdminAction - allow listing data usage info
 	DataUsageInfoAdminAction = "admin:DataUsageInfo"
 	// PerfInfoAdminAction - allow listing performance info