satellite/metabase: adjust DeleteObjectLastCommitted for versioning

Change-Id: I7545af21fb098867ec43ba331ea6eaf9073db4b3

satellite/metabase/delete.go

@@ -7,13 +7,16 @@ import (
 	"bytes"
 	"context"
 	"database/sql"
+	"errors"
 	"sort"
 
 	"github.com/zeebo/errs"
 	"go.uber.org/zap"
 
 	"storj.io/common/storj"
+	"storj.io/common/uuid"
 	"storj.io/private/dbutil/pgutil"
+	"storj.io/private/dbutil/txutil"
 	"storj.io/private/tagsql"
 )
 
@@ -81,66 +84,8 @@ func (delete *DeleteObjectsAllVersions) Verify() error {
 	return nil
 }
 
-var deleteObjectExactVersion = `
-WITH deleted_objects AS (
-	DELETE FROM objects
-	WHERE
-		project_id   = $1 AND
-		bucket_name  = $2 AND
-		object_key   = $3 AND
-		version      = $4
-	RETURNING
-		version, stream_id, created_at, expires_at, status, segment_count, encrypted_metadata_nonce,
-		encrypted_metadata, encrypted_metadata_encrypted_key, total_plain_size, total_encrypted_size,
-		fixed_segment_size, encryption
-), deleted_segments AS (
-	DELETE FROM segments
-	WHERE segments.stream_id IN (SELECT deleted_objects.stream_id FROM deleted_objects)
-	RETURNING segments.stream_id
-)
-SELECT
-	version, stream_id, created_at, expires_at, status, segment_count, encrypted_metadata_nonce,
-	encrypted_metadata, encrypted_metadata_encrypted_key, total_plain_size, total_encrypted_size,
-	fixed_segment_size, encryption
-FROM deleted_objects`
-
-var deleteObjectLastCommitted = `
-WITH deleted_objects AS (
-	DELETE FROM objects
-	WHERE
-		project_id   = $1 AND
-		bucket_name  = $2 AND
-		object_key   = $3 AND
-		version IN (SELECT version FROM objects WHERE
-			project_id   = $1 AND
-			bucket_name  = $2 AND
-			object_key   = $3 AND
-			status       = ` + statusCommittedUnversioned + ` AND
-			(expires_at IS NULL OR expires_at > now())
-			ORDER BY version DESC
-		)
-	RETURNING
-		version, stream_id,
-		created_at, expires_at,
-		status, segment_count,
-		encrypted_metadata_nonce, encrypted_metadata, encrypted_metadata_encrypted_key,
-		total_plain_size, total_encrypted_size, fixed_segment_size,
-		encryption
-), deleted_segments AS (
-	DELETE FROM segments
-	WHERE segments.stream_id IN (SELECT deleted_objects.stream_id FROM deleted_objects)
-	RETURNING segments.stream_id
-)
-SELECT
-	version, stream_id, created_at, expires_at, status, segment_count, encrypted_metadata_nonce,
-	encrypted_metadata, encrypted_metadata_encrypted_key, total_plain_size, total_encrypted_size,
-	fixed_segment_size, encryption
-FROM deleted_objects`
-
 // DeleteObjectExactVersion deletes an exact object version.
-func (db *DB) DeleteObjectExactVersion(
+func (db *DB) DeleteObjectExactVersion(ctx context.Context, opts DeleteObjectExactVersion) (result DeleteObjectResult, err error) {
-	ctx context.Context, opts DeleteObjectExactVersion,
-) (result DeleteObjectResult, err error) {
 	result, err = db.deleteObjectExactVersion(ctx, opts, db.db)
 	if err != nil {
 		return DeleteObjectResult{}, err
@@ -164,7 +109,24 @@ func (db *DB) deleteObjectExactVersion(ctx context.Context, opts DeleteObjectExa
 	}
 
 	err = withRows(
-		stmt.QueryContext(ctx, deleteObjectExactVersion,
+		stmt.QueryContext(ctx, `
+			WITH deleted_objects AS (
+				DELETE FROM objects
+				WHERE (project_id, bucket_name, object_key, version) = ($1, $2, $3, $4)
+				RETURNING
+					version, stream_id, created_at, expires_at, status, segment_count, encrypted_metadata_nonce,
+					encrypted_metadata, encrypted_metadata_encrypted_key, total_plain_size, total_encrypted_size,
+					fixed_segment_size, encryption
+			), deleted_segments AS (
+				DELETE FROM segments
+				WHERE segments.stream_id IN (SELECT deleted_objects.stream_id FROM deleted_objects)
+				RETURNING segments.stream_id
+			)
+			SELECT
+				version, stream_id, created_at, expires_at, status, segment_count, encrypted_metadata_nonce,
+				encrypted_metadata, encrypted_metadata_encrypted_key, total_plain_size, total_encrypted_size,
+				fixed_segment_size, encryption
+			FROM deleted_objects`,
 			opts.ProjectID, []byte(opts.BucketName), opts.ObjectKey, opts.Version),
 	)(func(rows tagsql.Rows) error {
 		result.Objects, err = db.scanObjectDeletion(ctx, opts.ObjectLocation, rows)
@@ -366,11 +328,10 @@ func (db *DB) queryHighestVersion(ctx context.Context, loc ObjectLocation, stmt
 	}
 
 	err = stmt.QueryRowContext(ctx, `
-		SELECT MAX(version) as version
+		SELECT COALESCE(MAX(version), 0) as version
 		FROM objects
 		WHERE (project_id, bucket_name, object_key) = ($1, $2, $3)
 	`, loc.ProjectID, []byte(loc.BucketName), loc.ObjectKey).Scan(&highest)
-
 	if err != nil {
 		return 0, Error.Wrap(err)
 	}
@@ -404,36 +365,37 @@ func (db *DB) DeleteObjectsAllVersions(ctx context.Context, opts DeleteObjectsAl
 		objectKeys[i] = []byte(opts.Locations[i].ObjectKey)
 	}
 
+	// TODO(ver): should this insert delete markers?
+
 	// Sorting the object keys just in case.
 	// TODO: Check if this is really necessary for the SQL query.
 	sort.Slice(objectKeys, func(i, j int) bool {
 		return bytes.Compare(objectKeys[i], objectKeys[j]) < 0
 	})
 	err = withRows(db.db.QueryContext(ctx, `
-				WITH deleted_objects AS (
+		WITH deleted_objects AS (
-					DELETE FROM objects
+			DELETE FROM objects
-					WHERE
+			WHERE
-					project_id   = $1 AND
+				(project_id, bucket_name) = ($1, $2) AND
-					bucket_name  = $2 AND
+				object_key   = ANY ($3) AND
-					object_key   = ANY ($3) AND
+				status       <> `+statusPending+`
-					status       = `+statusCommittedUnversioned+`
+			RETURNING
-					RETURNING
+				project_id, bucket_name, object_key, version, stream_id, created_at, expires_at,
-						project_id, bucket_name, object_key, version, stream_id, created_at, expires_at,
+				status, segment_count, encrypted_metadata_nonce, encrypted_metadata,
-						status, segment_count, encrypted_metadata_nonce, encrypted_metadata,
+				encrypted_metadata_encrypted_key, total_plain_size, total_encrypted_size,
-						encrypted_metadata_encrypted_key, total_plain_size, total_encrypted_size,
+				fixed_segment_size, encryption
-						fixed_segment_size, encryption
+		), deleted_segments AS (
-				), deleted_segments AS (
+			DELETE FROM segments
-					DELETE FROM segments
+			WHERE segments.stream_id IN (SELECT deleted_objects.stream_id FROM deleted_objects)
-					WHERE segments.stream_id IN (SELECT deleted_objects.stream_id FROM deleted_objects)
+			RETURNING segments.stream_id
-					RETURNING segments.stream_id
+		)
-				)
+		SELECT
-				SELECT
+			project_id, bucket_name, object_key, version, stream_id, created_at, expires_at,
-					project_id, bucket_name, object_key, version, stream_id, created_at, expires_at,
+			status, segment_count, encrypted_metadata_nonce, encrypted_metadata,
-					status, segment_count, encrypted_metadata_nonce, encrypted_metadata,
+			encrypted_metadata_encrypted_key, total_plain_size, total_encrypted_size,
-					encrypted_metadata_encrypted_key, total_plain_size, total_encrypted_size,
+			fixed_segment_size, encryption
-					fixed_segment_size, encryption
+		FROM deleted_objects
-				FROM deleted_objects
+	`, projectID, []byte(bucketName), pgutil.ByteaArray(objectKeys)))(func(rows tagsql.Rows) error {
-			`, projectID, []byte(bucketName), pgutil.ByteaArray(objectKeys)))(func(rows tagsql.Rows) error {
 		result.Objects, err = db.scanMultipleObjectsDeletion(ctx, rows)
 		return err
 	})
@@ -535,10 +497,17 @@ func (db *DB) scanPendingObjectDeletion(ctx context.Context, location ObjectLoca
 // DeleteObjectLastCommitted contains arguments necessary for deleting last committed version of object.
 type DeleteObjectLastCommitted struct {
 	ObjectLocation
+
+	// TODO(ver): maybe replace these with an enumeration?
+	Versioned bool
+	Suspended bool
 }
 
 // Verify delete object last committed fields.
 func (obj *DeleteObjectLastCommitted) Verify() error {
+	if obj.Versioned && obj.Suspended {
+		return ErrInvalidRequest.New("versioned and suspended cannot be enabled at the same time")
+	}
 	return obj.ObjectLocation.Verify()
 }
 
@@ -552,8 +521,131 @@ func (db *DB) DeleteObjectLastCommitted(
 		return DeleteObjectResult{}, err
 	}
 
+	if opts.Suspended {
+		err = txutil.WithTx(ctx, db.db, nil, func(ctx context.Context, tx tagsql.Tx) (err error) {
+			// TODO(ver) fold deleteObjectUnversionedCommitted into query below using ON CONFLICT
+			deleted, err := db.deleteObjectUnversionedCommitted(ctx, opts.ObjectLocation, tx)
+			// TODO(ver): should we return in the result as well?
+			if err != nil {
+				return Error.Wrap(err)
+			}
+			if deleted.MaxVersion == 0 {
+				return ErrObjectNotFound.New("unable to delete object")
+			}
+
+			row := tx.QueryRowContext(ctx, `
+				INSERT INTO objects (
+					project_id, bucket_name, object_key, version, stream_id,
+					status, expires_at, segment_count, total_plain_size, total_encrypted_size, fixed_segment_size,
+					zombie_deletion_deadline, encryption
+				)
+				SELECT
+					$1, $2, $3, $4, $5,
+					`+statusDeleteMarkerUnversioned+`, NULL, 0, 0, 0, 0,
+					NULL, 0
+				RETURNING
+					version,
+					created_at
+			`, opts.ProjectID, []byte(opts.BucketName), opts.ObjectKey, deleted.MaxVersion+1, uuid.UUID{})
+
+			var marker Object
+			marker.ProjectID = opts.ProjectID
+			marker.BucketName = opts.BucketName
+			marker.ObjectKey = opts.ObjectKey
+			marker.Status = DeleteMarkerUnversioned
+
+			err = row.Scan(&marker.Version, &marker.CreatedAt)
+			if err != nil {
+				return Error.Wrap(err)
+			}
+
+			result.Objects = append(result.Objects, marker)
+			return nil
+		})
+		return result, err
+	}
+	if opts.Versioned {
+		// Instead of deleting we insert a deletion marker.
+		streamID := uuid.UUID{}
+		row := db.db.QueryRowContext(ctx, `
+			WITH check_existing_object AS (
+				SELECT status
+				FROM objects
+				WHERE
+					(project_id, bucket_name, object_key) = ($1, $2, $3) AND
+					status <> `+statusPending+`
+				ORDER BY project_id, bucket_name, object_key, stream_id, version DESC, created_at DESC
+				LIMIT 1
+			),
+			added_object AS (
+				INSERT INTO objects (
+					project_id, bucket_name, object_key, version, stream_id,
+					status, expires_at, segment_count, total_plain_size, total_encrypted_size, fixed_segment_size,
+					zombie_deletion_deadline, encryption
+				)
+				SELECT
+					$1, $2, $3,
+						coalesce((
+							SELECT version + 1
+							FROM objects
+							WHERE (project_id, bucket_name, object_key) = ($1, $2, $3)
+							ORDER BY version DESC
+							LIMIT 1
+						), 1),
+					$4,
+					`+statusDeleteMarkerVersioned+`, NULL, 0, 0, 0, 0,
+					NULL, 0
+				WHERE EXISTS (SELECT 1 FROM check_existing_object)
+				RETURNING *
+			)
+			SELECT version, created_at FROM added_object
+		`, opts.ProjectID, []byte(opts.BucketName), opts.ObjectKey, streamID)
+
+		// TODO(ver): should this return the deleted object or the delete marker?
+		var deleted Object
+		deleted.ProjectID = opts.ProjectID
+		deleted.BucketName = opts.BucketName
+		deleted.ObjectKey = opts.ObjectKey
+		deleted.StreamID = streamID
+		deleted.Status = DeleteMarkerVersioned
+
+		err = row.Scan(&deleted.Version, &deleted.CreatedAt)
+		if err != nil {
+			if errors.Is(err, sql.ErrNoRows) {
+				return DeleteObjectResult{}, ErrObjectNotFound.Wrap(Error.New("object does not exist"))
+			}
+			return DeleteObjectResult{}, Error.Wrap(err)
+		}
+		return DeleteObjectResult{Objects: []Object{deleted}}, nil
+	}
+
+	// TODO(ver): do we need to pretend here that `expires_at` matters?
+	// TODO(ver): should this report an error when the object doesn't exist?
 	err = withRows(
-		db.db.QueryContext(ctx, deleteObjectLastCommitted,
+		db.db.QueryContext(ctx, `
+			WITH deleted_objects AS (
+				DELETE FROM objects
+				WHERE
+					(project_id, bucket_name, object_key) = ($1, $2, $3) AND
+					status       = `+statusCommittedUnversioned+` AND
+					(expires_at IS NULL OR expires_at > now())
+				RETURNING
+					version, stream_id,
+					created_at, expires_at,
+					status, segment_count,
+					encrypted_metadata_nonce, encrypted_metadata, encrypted_metadata_encrypted_key,
+					total_plain_size, total_encrypted_size, fixed_segment_size,
+					encryption
+			), deleted_segments AS (
+				DELETE FROM segments
+				WHERE segments.stream_id IN (SELECT deleted_objects.stream_id FROM deleted_objects)
+				RETURNING segments.stream_id
+			)
+			SELECT
+				version, stream_id, created_at, expires_at, status, segment_count, encrypted_metadata_nonce,
+				encrypted_metadata, encrypted_metadata_encrypted_key, total_plain_size, total_encrypted_size,
+				fixed_segment_size, encryption
+			FROM deleted_objects`,
 			opts.ProjectID, []byte(opts.BucketName), opts.ObjectKey),
 	)(func(rows tagsql.Rows) error {
 		result.Objects, err = db.scanObjectDeletion(ctx, opts.ObjectLocation, rows)

satellite/metabase/delete_test.go

@@ -720,6 +720,177 @@ func TestDeleteObjectExactVersion(t *testing.T) {
 	})
 }
 
+func TestDeleteObjectVersioning(t *testing.T) {
+	metabasetest.Run(t, func(ctx *testcontext.Context, t *testing.T, db *metabase.DB) {
+		obj := metabasetest.RandObjectStream()
+		location := obj.Location()
+
+		t.Run("Delete non existing object version", func(t *testing.T) {
+			defer metabasetest.DeleteAll{}.Check(ctx, t, db)
+
+			metabasetest.DeleteObjectLastCommitted{
+				Opts: metabase.DeleteObjectLastCommitted{
+					ObjectLocation: location,
+					Versioned:      true,
+				},
+				ErrClass: &metabase.ErrObjectNotFound,
+				Result:   metabase.DeleteObjectResult{},
+			}.Check(ctx, t, db)
+			metabasetest.Verify{}.Check(ctx, t, db)
+		})
+
+		t.Run("Delete partial object", func(t *testing.T) {
+			defer metabasetest.DeleteAll{}.Check(ctx, t, db)
+
+			pending := metabasetest.BeginObjectExactVersion{
+				Opts: metabase.BeginObjectExactVersion{
+					ObjectStream: obj,
+					Encryption:   metabasetest.DefaultEncryption,
+				},
+			}.Check(ctx, t, db)
+
+			metabasetest.DeleteObjectLastCommitted{
+				Opts: metabase.DeleteObjectLastCommitted{
+					ObjectLocation: location,
+					Versioned:      true,
+				},
+				ErrClass: &metabase.ErrObjectNotFound,
+				Result:   metabase.DeleteObjectResult{},
+			}.Check(ctx, t, db)
+
+			// Not quite sure whether this is the appropriate behavior,
+			// but let's leave the pending object in place and not insert a deletion marker.
+			metabasetest.Verify{
+				Objects: []metabase.RawObject{{
+					ObjectStream: obj,
+					CreatedAt:    pending.CreatedAt,
+					Status:       metabase.Pending,
+					Encryption:   pending.Encryption,
+
+					ZombieDeletionDeadline: pending.ZombieDeletionDeadline,
+				}},
+			}.Check(ctx, t, db)
+		})
+
+		t.Run("Create a delete marker", func(t *testing.T) {
+			defer metabasetest.DeleteAll{}.Check(ctx, t, db)
+
+			committed, _ := metabasetest.CreateTestObject{
+				CommitObject: &metabase.CommitObject{
+					ObjectStream: obj,
+				},
+			}.Run(ctx, t, db, obj, 0)
+
+			marker := committed.ObjectStream
+			marker.StreamID = uuid.UUID{}
+			marker.Version = committed.Version + 1
+
+			now := time.Now()
+			metabasetest.DeleteObjectLastCommitted{
+				Opts: metabase.DeleteObjectLastCommitted{
+					ObjectLocation: location,
+					Versioned:      true,
+				},
+				Result: metabase.DeleteObjectResult{
+					Objects: []metabase.Object{
+						{
+							ObjectStream: marker,
+							CreatedAt:    now,
+							Status:       metabase.DeleteMarkerVersioned,
+						},
+					},
+				},
+			}.Check(ctx, t, db)
+
+			metabasetest.Verify{
+				Objects: []metabase.RawObject{
+					{
+						ObjectStream: marker,
+						CreatedAt:    now,
+						Status:       metabase.DeleteMarkerVersioned,
+					},
+					{
+						ObjectStream: obj,
+						CreatedAt:    committed.CreatedAt,
+						Status:       metabase.CommittedUnversioned,
+						Encryption:   committed.Encryption,
+					},
+				},
+			}.Check(ctx, t, db)
+		})
+
+		t.Run("multiple delete markers", func(t *testing.T) {
+			defer metabasetest.DeleteAll{}.Check(ctx, t, db)
+
+			committed, _ := metabasetest.CreateTestObject{
+				CommitObject: &metabase.CommitObject{
+					ObjectStream: obj,
+				},
+			}.Run(ctx, t, db, obj, 0)
+
+			marker := committed.ObjectStream
+			marker.StreamID = uuid.UUID{}
+			marker.Version = committed.Version + 1
+
+			now := time.Now()
+			metabasetest.DeleteObjectLastCommitted{
+				Opts: metabase.DeleteObjectLastCommitted{
+					ObjectLocation: location,
+					Versioned:      true,
+				},
+				Result: metabase.DeleteObjectResult{
+					Objects: []metabase.Object{
+						{
+							ObjectStream: marker,
+							CreatedAt:    now,
+							Status:       metabase.DeleteMarkerVersioned,
+						},
+					},
+				},
+			}.Check(ctx, t, db)
+
+			marker2 := marker
+			marker2.Version = marker.Version + 1
+			metabasetest.DeleteObjectLastCommitted{
+				Opts: metabase.DeleteObjectLastCommitted{
+					ObjectLocation: location,
+					Versioned:      true,
+				},
+				Result: metabase.DeleteObjectResult{
+					Objects: []metabase.Object{
+						{
+							ObjectStream: marker2,
+							CreatedAt:    now,
+							Status:       metabase.DeleteMarkerVersioned,
+						},
+					},
+				},
+			}.Check(ctx, t, db)
+
+			metabasetest.Verify{
+				Objects: []metabase.RawObject{
+					{
+						ObjectStream: marker,
+						CreatedAt:    now,
+						Status:       metabase.DeleteMarkerVersioned,
+					},
+					{
+						ObjectStream: marker2,
+						CreatedAt:    now,
+						Status:       metabase.DeleteMarkerVersioned,
+					},
+					{
+						ObjectStream: obj,
+						CreatedAt:    committed.CreatedAt,
+						Status:       metabase.CommittedUnversioned,
+						Encryption:   committed.Encryption,
+					},
+				},
+			}.Check(ctx, t, db)
+		})
+	})
+}
+
 func TestDeleteObjectsAllVersions(t *testing.T) {
 	metabasetest.RunWithConfig(t, noServerSideCopyConfig, func(ctx *testcontext.Context, t *testing.T, db *metabase.DB) {
 		obj := metabasetest.RandObjectStream()
@@ -974,8 +1145,6 @@ func TestDeleteObjectsAllVersions(t *testing.T) {
 		})
 
 		t.Run("Delete multiple versions of the same object at once", func(t *testing.T) {
-			t.Skip("skip for now as there is no easy way to have different versions of the same committed object")
-
 			defer metabasetest.DeleteAll{}.Check(ctx, t, db)
 
 			expected := metabase.DeleteObjectResult{}
@@ -983,7 +1152,7 @@ func TestDeleteObjectsAllVersions(t *testing.T) {
 			for i := 1; i <= 10; i++ {
 				obj.StreamID = testrand.UUID()
 				obj.Version = metabase.Version(i)
-				expected.Objects = append(expected.Objects, metabasetest.CreateObject(ctx, t, db, obj, 1))
+				expected.Objects = append(expected.Objects, metabasetest.CreateObjectVersioned(ctx, t, db, obj, 1))
 			}
 
 			metabasetest.DeleteObjectsAllVersions{
@@ -995,6 +1164,85 @@ func TestDeleteObjectsAllVersions(t *testing.T) {
 
 			metabasetest.Verify{}.Check(ctx, t, db)
 		})
+
+		t.Run("delete last committed unversioned with suspended", func(t *testing.T) {
+			defer metabasetest.DeleteAll{}.Check(ctx, t, db)
+
+			now := time.Now()
+
+			obj := metabasetest.RandObjectStream()
+			_ = metabasetest.CreateObject(ctx, t, db, obj, 0)
+
+			marker := metabase.Object{
+				ObjectStream: metabase.ObjectStream{
+					ProjectID:  obj.ProjectID,
+					BucketName: obj.BucketName,
+					ObjectKey:  obj.ObjectKey,
+					Version:    obj.Version + 1,
+				},
+				Status:    metabase.DeleteMarkerUnversioned,
+				CreatedAt: now,
+			}
+
+			metabasetest.DeleteObjectLastCommitted{
+				Opts: metabase.DeleteObjectLastCommitted{
+					ObjectLocation: metabase.ObjectLocation{
+						ProjectID:  obj.ProjectID,
+						BucketName: obj.BucketName,
+						ObjectKey:  obj.ObjectKey,
+					},
+					Versioned: false,
+					Suspended: true,
+				},
+				Result: metabase.DeleteObjectResult{Objects: []metabase.Object{marker}},
+			}.Check(ctx, t, db)
+
+			metabasetest.Verify{
+				Objects: []metabase.RawObject{
+					metabase.RawObject(marker),
+				},
+			}.Check(ctx, t, db)
+		})
+
+		t.Run("delete last committed versioned with suspended", func(t *testing.T) {
+			defer metabasetest.DeleteAll{}.Check(ctx, t, db)
+
+			now := time.Now()
+
+			obj := metabasetest.RandObjectStream()
+			initial := metabasetest.CreateObjectVersioned(ctx, t, db, obj, 0)
+
+			marker := metabase.Object{
+				ObjectStream: metabase.ObjectStream{
+					ProjectID:  obj.ProjectID,
+					BucketName: obj.BucketName,
+					ObjectKey:  obj.ObjectKey,
+					Version:    obj.Version + 1,
+				},
+				Status:    metabase.DeleteMarkerUnversioned,
+				CreatedAt: now,
+			}
+
+			metabasetest.DeleteObjectLastCommitted{
+				Opts: metabase.DeleteObjectLastCommitted{
+					ObjectLocation: metabase.ObjectLocation{
+						ProjectID:  obj.ProjectID,
+						BucketName: obj.BucketName,
+						ObjectKey:  obj.ObjectKey,
+					},
+					Versioned: false,
+					Suspended: true,
+				},
+				Result: metabase.DeleteObjectResult{Objects: []metabase.Object{marker}},
+			}.Check(ctx, t, db)
+
+			metabasetest.Verify{
+				Objects: []metabase.RawObject{
+					metabase.RawObject(initial),
+					metabase.RawObject(marker),
+				},
+			}.Check(ctx, t, db)
+		})
 	})
 }
 

satellite/metabase/metabasetest/test.go

@@ -64,7 +64,7 @@ type BeginObjectExactVersion struct {
 }
 
 // Check runs the test.
-func (step BeginObjectExactVersion) Check(ctx *testcontext.Context, t require.TestingT, db *metabase.DB) {
+func (step BeginObjectExactVersion) Check(ctx *testcontext.Context, t require.TestingT, db *metabase.DB) metabase.Object {
 	got, err := db.TestingBeginObjectExactVersion(ctx, step.Opts)
 	checkError(t, err, step.ErrClass, step.ErrText)
 	if step.ErrClass == nil {
@@ -82,6 +82,7 @@ func (step BeginObjectExactVersion) Check(ctx *testcontext.Context, t require.Te
 		}
 		require.Equal(t, step.Opts.Encryption, got.Encryption)
 	}
+	return got
 }
 
 // CommitObject is for testing metabase.CommitObject.