473 lines
13 KiB
Go
473 lines
13 KiB
Go
// Copyright (C) 2020 Storj Labs, Inc.
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// See LICENSE for copying information.
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package metabase
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import (
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"bytes"
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"context"
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"database/sql"
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"errors"
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"sort"
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"github.com/zeebo/errs"
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"storj.io/common/storj"
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"storj.io/storj/private/dbutil/pgutil"
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"storj.io/storj/private/dbutil/txutil"
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"storj.io/storj/private/tagsql"
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)
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// DeleteObjectExactVersion contains arguments necessary for deleting an exact version of object.
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type DeleteObjectExactVersion struct {
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Version Version
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ObjectLocation
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}
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// Verify delete object fields.
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func (obj *DeleteObjectExactVersion) Verify() error {
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if err := obj.ObjectLocation.Verify(); err != nil {
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return err
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}
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if obj.Version <= 0 {
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return ErrInvalidRequest.New("Version invalid: %v", obj.Version)
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}
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return nil
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}
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// DeleteObjectResult result of deleting object.
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type DeleteObjectResult struct {
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Objects []Object
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Segments []DeletedSegmentInfo
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}
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// DeletedSegmentInfo info about deleted segment.
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type DeletedSegmentInfo struct {
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RootPieceID storj.PieceID
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Pieces Pieces
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}
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// DeleteObjectAllVersions contains arguments necessary for deleting all object versions.
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type DeleteObjectAllVersions struct {
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ObjectLocation
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}
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// DeleteObjectsAllVersions contains arguments necessary for deleting all versions of multiple objects from the same bucket.
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type DeleteObjectsAllVersions struct {
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Locations []ObjectLocation
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}
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// Verify delete objects fields.
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func (delete *DeleteObjectsAllVersions) Verify() error {
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if len(delete.Locations) == 0 {
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return nil
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}
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// TODO: make this limit configurable
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if len(delete.Locations) > 1000 {
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return ErrInvalidRequest.New("cannot delete more than 1000 objects in a single request")
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}
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var errGroup errs.Group
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for _, location := range delete.Locations {
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errGroup.Add(location.Verify())
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}
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err := errGroup.Err()
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if err != nil {
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return err
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}
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// Verify if all locations are in the same bucket
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first := delete.Locations[0]
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for _, item := range delete.Locations[1:] {
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if first.ProjectID != item.ProjectID || first.BucketName != item.BucketName {
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return ErrInvalidRequest.New("all objects must be in the same bucket")
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}
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}
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return nil
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}
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// DeleteObjectLatestVersion contains arguments necessary for deleting latest object version.
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type DeleteObjectLatestVersion struct {
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ObjectLocation
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}
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// DeleteObjectExactVersion deletes an exact object version.
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func (db *DB) DeleteObjectExactVersion(ctx context.Context, opts DeleteObjectExactVersion) (result DeleteObjectResult, err error) {
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defer mon.Task()(&ctx)(&err)
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if err := opts.Verify(); err != nil {
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return DeleteObjectResult{}, err
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}
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err = txutil.WithTx(ctx, db.db, nil, func(ctx context.Context, tx tagsql.Tx) error {
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rows, err := tx.Query(ctx, `
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DELETE FROM objects
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WHERE
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project_id = $1 AND
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bucket_name = $2 AND
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object_key = $3 AND
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version = $4 AND
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status = 1
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RETURNING
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version, stream_id,
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created_at, expires_at,
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status, segment_count,
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encrypted_metadata_nonce, encrypted_metadata,
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total_encrypted_size, fixed_segment_size,
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encryption;
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`, opts.ProjectID, opts.BucketName, []byte(opts.ObjectKey), opts.Version)
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if err != nil {
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if errors.Is(err, sql.ErrNoRows) {
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return storj.ErrObjectNotFound.Wrap(Error.Wrap(err))
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}
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return Error.New("unable to delete object: %w", err)
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}
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result.Objects, err = scanObjectDeletion(opts.ObjectLocation, rows)
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if err != nil {
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return err
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}
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if len(result.Objects) == 0 {
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return storj.ErrObjectNotFound.Wrap(Error.New("no rows deleted"))
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}
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segmentInfos, err := deleteSegments(ctx, tx, result.Objects)
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if err != nil {
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return err
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}
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if len(segmentInfos) != 0 {
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result.Segments = segmentInfos
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}
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return nil
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})
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if err != nil {
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return DeleteObjectResult{}, err
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}
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return result, nil
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}
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// DeleteObjectLatestVersion deletes latest object version.
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func (db *DB) DeleteObjectLatestVersion(ctx context.Context, opts DeleteObjectLatestVersion) (result DeleteObjectResult, err error) {
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defer mon.Task()(&ctx)(&err)
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if err := opts.Verify(); err != nil {
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return DeleteObjectResult{}, err
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}
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err = txutil.WithTx(ctx, db.db, nil, func(ctx context.Context, tx tagsql.Tx) error {
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// TODO different sql for Postgres and CockroachDB
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// version ONLY for cockroachdb
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// Postgres doesn't support ORDER BY and LIMIT in DELETE
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// rows, err = tx.Query(ctx, `
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// DELETE FROM objects
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// WHERE
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// project_id = $1 AND
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// bucket_name = $2 AND
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// object_key = $3 AND
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// status = 1
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// ORDER BY version DESC
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// LIMIT 1
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// RETURNING stream_id;
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// `, opts.ProjectID, opts.BucketName, opts.ObjectKey)
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// version for Postgres and Cockroachdb (but slow for Cockroachdb)
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rows, err := tx.Query(ctx, `
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DELETE FROM objects
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WHERE
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project_id = $1 AND
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bucket_name = $2 AND
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object_key = $3 AND
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version = (SELECT version FROM objects WHERE
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project_id = $1 AND
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bucket_name = $2 AND
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object_key = $3 AND
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status = 1
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ORDER BY version DESC LIMIT 1
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) AND
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status = 1
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RETURNING
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version, stream_id,
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created_at, expires_at,
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status, segment_count,
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encrypted_metadata_nonce, encrypted_metadata,
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total_encrypted_size, fixed_segment_size,
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encryption;
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`, opts.ProjectID, opts.BucketName, []byte(opts.ObjectKey))
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if err != nil {
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if errors.Is(err, sql.ErrNoRows) {
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return storj.ErrObjectNotFound.Wrap(Error.Wrap(err))
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}
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return Error.New("unable to delete object: %w", err)
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}
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result.Objects, err = scanObjectDeletion(opts.ObjectLocation, rows)
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if err != nil {
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return err
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}
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if len(result.Objects) == 0 {
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return storj.ErrObjectNotFound.Wrap(Error.New("no rows deleted"))
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}
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segmentInfos, err := deleteSegments(ctx, tx, result.Objects)
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if err != nil {
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return err
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}
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if len(segmentInfos) != 0 {
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result.Segments = segmentInfos
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}
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return nil
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})
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if err != nil {
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return DeleteObjectResult{}, err
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}
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return result, nil
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}
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// DeleteObjectAllVersions deletes all object versions.
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func (db *DB) DeleteObjectAllVersions(ctx context.Context, opts DeleteObjectAllVersions) (result DeleteObjectResult, err error) {
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defer mon.Task()(&ctx)(&err)
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if err := opts.Verify(); err != nil {
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return DeleteObjectResult{}, err
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}
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err = txutil.WithTx(ctx, db.db, nil, func(ctx context.Context, tx tagsql.Tx) error {
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rows, err := tx.Query(ctx, `
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DELETE FROM objects
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WHERE
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project_id = $1 AND
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bucket_name = $2 AND
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object_key = $3 AND
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status = 1
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RETURNING
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version, stream_id,
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created_at, expires_at,
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status, segment_count,
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encrypted_metadata_nonce, encrypted_metadata,
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total_encrypted_size, fixed_segment_size,
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encryption;
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`, opts.ProjectID, opts.BucketName, []byte(opts.ObjectKey))
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if err != nil {
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if errors.Is(err, sql.ErrNoRows) {
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return storj.ErrObjectNotFound.Wrap(Error.Wrap(err))
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}
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return Error.New("unable to delete object: %w", err)
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}
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result.Objects, err = scanObjectDeletion(opts.ObjectLocation, rows)
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if err != nil {
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return err
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}
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if len(result.Objects) == 0 {
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return storj.ErrObjectNotFound.Wrap(Error.New("no rows deleted"))
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}
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segmentInfos, err := deleteSegments(ctx, tx, result.Objects)
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if err != nil {
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return err
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}
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if len(segmentInfos) != 0 {
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result.Segments = segmentInfos
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}
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return nil
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})
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if err != nil {
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return DeleteObjectResult{}, err
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}
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return result, nil
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}
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// DeleteObjectsAllVersions deletes all versions of multiple objects from the same bucket.
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func (db *DB) DeleteObjectsAllVersions(ctx context.Context, opts DeleteObjectsAllVersions) (result DeleteObjectResult, err error) {
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defer mon.Task()(&ctx)(&err)
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if len(opts.Locations) == 0 {
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// nothing to delete, no error
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return DeleteObjectResult{}, nil
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}
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if err := opts.Verify(); err != nil {
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return DeleteObjectResult{}, err
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}
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err = txutil.WithTx(ctx, db.db, nil, func(ctx context.Context, tx tagsql.Tx) error {
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// It is aleady verified that all object locations are in the same bucket
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projectID := opts.Locations[0].ProjectID
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bucketName := opts.Locations[0].BucketName
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objectKeys := make([][]byte, len(opts.Locations))
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for i := range opts.Locations {
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objectKeys[i] = []byte(opts.Locations[i].ObjectKey)
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}
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// Sorting the object keys just in case.
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// TODO: Check if this is really necessary for the SQL query.
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sort.Slice(objectKeys, func(i, j int) bool {
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return bytes.Compare(objectKeys[i], objectKeys[j]) < 0
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})
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rows, err := tx.Query(ctx, `
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DELETE FROM objects
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WHERE
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project_id = $1 AND
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bucket_name = $2 AND
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object_key = ANY ($3) AND
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status = 1
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RETURNING
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project_id, bucket_name,
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object_key, version, stream_id,
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created_at, expires_at,
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status, segment_count,
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encrypted_metadata_nonce, encrypted_metadata,
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total_encrypted_size, fixed_segment_size,
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encryption;
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`, projectID, bucketName, pgutil.ByteaArray(objectKeys))
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if err != nil {
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if errors.Is(err, sql.ErrNoRows) {
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return storj.ErrObjectNotFound.Wrap(Error.Wrap(err))
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}
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return Error.New("unable to delete object: %w", err)
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}
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result.Objects, err = scanMultipleObjectsDeletion(rows)
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if err != nil {
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return err
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}
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if len(result.Objects) == 0 {
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// nothing was delete, no error
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return nil
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}
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segmentInfos, err := deleteSegments(ctx, tx, result.Objects)
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if err != nil {
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return err
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}
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if len(segmentInfos) != 0 {
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result.Segments = segmentInfos
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}
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return nil
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})
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if err != nil {
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return DeleteObjectResult{}, err
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}
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return result, nil
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}
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func scanObjectDeletion(location ObjectLocation, rows tagsql.Rows) (objects []Object, err error) {
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defer func() { err = errs.Combine(err, rows.Close()) }()
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objects = make([]Object, 0, 10)
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for rows.Next() {
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var object Object
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object.ProjectID = location.ProjectID
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object.BucketName = location.BucketName
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object.ObjectKey = location.ObjectKey
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err = rows.Scan(&object.Version, &object.StreamID,
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&object.CreatedAt, &object.ExpiresAt,
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&object.Status, &object.SegmentCount,
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&object.EncryptedMetadataNonce, &object.EncryptedMetadata,
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&object.TotalEncryptedSize, &object.FixedSegmentSize,
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encryptionParameters{&object.Encryption})
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if err != nil {
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return nil, Error.New("unable to delete object: %w", err)
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}
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objects = append(objects, object)
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}
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if err := rows.Err(); err != nil {
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return nil, Error.New("unable to delete object: %w", err)
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}
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return objects, nil
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}
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func scanMultipleObjectsDeletion(rows tagsql.Rows) (objects []Object, err error) {
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defer func() { err = errs.Combine(err, rows.Close()) }()
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objects = make([]Object, 0, 10)
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for rows.Next() {
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var object Object
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err = rows.Scan(&object.ProjectID, &object.BucketName,
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&object.ObjectKey, &object.Version, &object.StreamID,
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&object.CreatedAt, &object.ExpiresAt,
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&object.Status, &object.SegmentCount,
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&object.EncryptedMetadataNonce, &object.EncryptedMetadata,
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&object.TotalEncryptedSize, &object.FixedSegmentSize,
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encryptionParameters{&object.Encryption})
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if err != nil {
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return nil, Error.New("unable to delete object: %w", err)
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}
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objects = append(objects, object)
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}
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if err := rows.Err(); err != nil {
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return nil, Error.New("unable to delete object: %w", err)
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}
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if len(objects) == 0 {
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objects = nil
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}
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return objects, nil
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}
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func deleteSegments(ctx context.Context, tx tagsql.Tx, objects []Object) (_ []DeletedSegmentInfo, err error) {
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defer mon.Task()(&ctx)(&err)
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// TODO we need to figure out how integrate this with piece deletion code
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// one issue is that with this approach we need to return all pieces SN ids at once
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streamIDs := make([][]byte, len(objects))
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for i := range objects {
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streamIDs[i] = objects[i].StreamID[:]
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}
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// Sorting the stream IDs just in case.
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// TODO: Check if this is really necessary for the SQL query.
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sort.Slice(streamIDs, func(i, j int) bool {
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return bytes.Compare(streamIDs[i], streamIDs[j]) < 0
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})
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segmentsRows, err := tx.Query(ctx, `
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DELETE FROM segments
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WHERE stream_id = ANY ($1)
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RETURNING root_piece_id, remote_pieces;
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`, pgutil.ByteaArray(streamIDs))
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if err != nil {
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return []DeletedSegmentInfo{}, Error.New("unable to delete object: %w", err)
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}
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defer func() { err = errs.Combine(err, segmentsRows.Close()) }()
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infos := make([]DeletedSegmentInfo, 0, len(objects))
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for segmentsRows.Next() {
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var segmentInfo DeletedSegmentInfo
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err = segmentsRows.Scan(&segmentInfo.RootPieceID, &segmentInfo.Pieces)
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if err != nil {
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return []DeletedSegmentInfo{}, Error.New("unable to delete object: %w", err)
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}
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if len(segmentInfo.Pieces) != 0 {
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infos = append(infos, segmentInfo)
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}
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}
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if err := segmentsRows.Err(); err != nil {
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return []DeletedSegmentInfo{}, Error.New("unable to delete object: %w", err)
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}
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return infos, nil
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}
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