services/object: Drop unused code

Signed-off-by: Leonard Lyubich <[email protected]>

pkg/services/object/util/chain.go

@@ -28,14 +28,6 @@ type ObjectSource interface {
 // Stop boolean result provides the ability to interrupt the traversal.
 type SplitMemberHandler func(member *object.Object, reverseDirection bool) (stop bool)
 
-// IterateAllSplitLeaves is an iterator over all object split-tree leaves in direct order.
-func IterateAllSplitLeaves(r ObjectSource, addr oid.Address, h func(*object.Object)) error {
-	return IterateSplitLeaves(r, addr, func(leaf *object.Object) bool {
-		h(leaf)
-		return false
-	})
-}
-
 // IterateSplitLeaves is an iterator over object split-tree leaves in direct order.
 //
 // If member handler returns true, then the iterator aborts without error.
@@ -199,114 +191,3 @@ func headFromReceiver(r ObjectSource, addr oid.Address) (*object.Object, error)
 		return nil, fmt.Errorf("unexpected information: %T", res)
 	}
 }
-
-// TraverseSplitChain is an iterator over object split-tree leaves.
-//
-// Traversal occurs in one of two directions, which depends on what pslit info was received:
-// * in direct order for link part;
-// * in reverse order for last part.
-func TraverseSplitChain(r ObjectSource, addr oid.Address, h SplitMemberHandler) error {
-	_, err := traverseSplitChain(r, addr, h)
-	return err
-}
-
-func traverseSplitChain(r ObjectSource, addr oid.Address, h SplitMemberHandler) (bool, error) {
-	v, err := r.Head(addr)
-	if err != nil {
-		return false, err
-	}
-
-	cnr := addr.Container()
-
-	switch res := v.(type) {
-	default:
-		panic(fmt.Sprintf("unexpected result of %T: %T", r, v))
-	case *object.Object:
-		return h(res, false), nil
-	case *object.SplitInfo:
-		link := res.GetLink()
-		last := res.GetLastPart()
-
-		switch {
-		default:
-			return false, errors.New("lack of split information")
-		case !link.IsZero():
-			var addr oid.Address
-			addr.SetContainer(cnr)
-			addr.SetObject(link)
-
-			chain := make([]oid.ID, 0)
-
-			if _, err := traverseSplitChain(r, addr, func(member *object.Object, reverseDirection bool) (stop bool) {
-				children := member.Children()
-
-				if reverseDirection {
-					chain = append(children, chain...)
-				} else {
-					chain = append(chain, children...)
-				}
-
-				return false
-			}); err != nil {
-				return false, err
-			}
-
-			var reverseChain []*object.Object
-
-			for i := range chain {
-				addr.SetObject(chain[i])
-
-				if stop, err := traverseSplitChain(r, addr, func(member *object.Object, reverseDirection bool) (stop bool) {
-					if !reverseDirection {
-						return h(member, false)
-					}
-
-					reverseChain = append(reverseChain, member)
-					return false
-				}); err != nil || stop {
-					return stop, err
-				}
-			}
-
-			for i := len(reverseChain) - 1; i >= 0; i-- {
-				if h(reverseChain[i], false) {
-					return true, nil
-				}
-			}
-		case !last.IsZero():
-			var addr oid.Address
-			addr.SetContainer(cnr)
-
-			for last = res.GetLastPart(); !last.IsZero(); {
-				addr.SetObject(last)
-
-				var directChain []*object.Object
-
-				if _, err := traverseSplitChain(r, addr, func(member *object.Object, reverseDirection bool) (stop bool) {
-					if reverseDirection {
-						last = member.GetPreviousID()
-						return h(member, true)
-					}
-
-					directChain = append(directChain, member)
-
-					return false
-				}); err != nil {
-					return false, err
-				}
-
-				for i := len(directChain) - 1; i >= 0; i-- {
-					if h(directChain[i], true) {
-						return true, nil
-					}
-				}
-
-				if len(directChain) > 0 {
-					last = directChain[len(directChain)-1].GetPreviousID()
-				}
-			}
-		}
-	}
-
-	return false, nil
-}