store nodes of a space inside of the space

This is still work in progress. In this state the node_test.go run
successfully.

pkg/storage/utils/decomposedfs/node/node.go

@@ -65,6 +65,7 @@ const (
 	NoSpaceID = ""
 	// TrashIDDelimiter represents the characters used to separate the nodeid and the deletion time.
 	TrashIDDelimiter = ".T."
+	NoSpaceID        = ""
 )
 
 // Node represents a node in the tree and provides methods to get a Parent or Child instance
@@ -402,7 +403,7 @@ func (n *Node) ParentInternalPath() string {
 
 // LockFilePath returns the internal path of the lock file of the node
 func (n *Node) LockFilePath() string {
-	return n.lu.InternalPath(n.ID) + ".lock"
+	return n.InternalPath() + ".lock"
 }
 
 // CalculateEtag returns a hash of fileid + tmtime (or mtime)

pkg/storage/utils/decomposedfs/spaces.go

@@ -342,7 +342,7 @@ func (fs *Decomposedfs) UpdateStorageSpace(ctx context.Context, req *provider.Up
 			appctx.GetLogger(ctx).Error().Err(err).Str("match", matches[0]).Msg("could not read link, skipping")
 		}
 
-		n, err := node.ReadNode(ctx, fs.lu, filepath.Base(target))
+		n, err := node.ReadNode(ctx, fs.lu, spaceID, filepath.Base(target))
 		if err != nil {
 			return nil, err
 		}
@@ -429,7 +429,7 @@ func (fs *Decomposedfs) DeleteStorageSpace(ctx context.Context, req *provider.De
 		appctx.GetLogger(ctx).Error().Err(err).Str("match", matches[0]).Msg("could not read link, skipping")
 	}
 
-	n, err := node.ReadNode(ctx, fs.lu, filepath.Base(target))
+	n, err := node.ReadNode(ctx, fs.lu, spaceID, filepath.Base(target))
 	if err != nil {
 		return err
 	}
@@ -438,7 +438,7 @@ func (fs *Decomposedfs) DeleteStorageSpace(ctx context.Context, req *provider.De
 		if !strings.Contains(n.Name, node.TrashIDDelimiter) {
 			return errtypes.NewErrtypeFromStatus(status.NewInvalidArg(ctx, "can't purge enabled space"))
 		}
-		ip := fs.lu.InternalPath(req.Id.OpaqueId)
+		ip := n.InternalPath()
 		matches, err := filepath.Glob(ip)
 		if err != nil {
 			return err

pkg/storage/utils/decomposedfs/testhelpers/helpers.go

@@ -152,7 +152,7 @@ func (t *TestEnv) CreateTestFile(name, blobID, parentID, spaceID string, blobSiz
 	if err != nil {
 		return nil, err
 	}
-	err = file.WriteAllNodeMetadata(t.Owner.Id)
+	err = n.WriteAllNodeMetadata(t.Owner.Id)
 	if err != nil {
 		return nil, err
 	}