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/*
GoToSocial
Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package migrations
import (
"context"
"database/sql"
"fmt"
"path"
"codeberg.org/gruf/go-store/v2/kv"
"codeberg.org/gruf/go-store/v2/storage"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/log"
"github.com/uptrace/bun"
)
func init() {
deleteAttachment := func(ctx context.Context, l log.Entry, a *gtsmodel.MediaAttachment, s *kv.KVStore, tx bun.Tx) {
if err := s.Delete(ctx, a.File.Path); err != nil && err != storage.ErrNotFound {
l.Errorf("error removing file %s: %s", a.File.Path, err)
} else {
l.Debugf("deleted %s", a.File.Path)
}
if err := s.Delete(ctx, a.Thumbnail.Path); err != nil && err != storage.ErrNotFound {
l.Errorf("error removing file %s: %s", a.Thumbnail.Path, err)
} else {
l.Debugf("deleted %s", a.Thumbnail.Path)
}
if _, err := tx.NewDelete().
TableExpr("? AS ?", bun.Ident("media_attachments"), bun.Ident("media_attachment")).
Where("? = ?", bun.Ident("media_attachment.id"), a.ID).
Exec(ctx); err != nil {
l.Errorf("error deleting attachment with id %s: %s", a.ID, err)
} else {
l.Debugf("deleted attachment with id %s", a.ID)
}
}
up := func(ctx context.Context, db *bun.DB) error {
l := log.WithField("migration", "20220612091800_duplicated_media_cleanup")
if config.GetStorageBackend() != "local" {
// this migration only affects versions which only supported local storage
return nil
}
storageBasePath := config.GetStorageLocalBasePath()
if storageBasePath == "" {
return fmt.Errorf("%s must be set to do storage migration", config.StorageLocalBasePathFlag())
}
return db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
s, err := kv.OpenDisk(storageBasePath, &storage.DiskConfig{
LockFile: path.Join(storageBasePath, "store.lock"),
})
if err != nil {
return fmt.Errorf("error creating storage backend: %s", err)
}
defer s.Close()
// step 1. select all media attachment remote URLs that have duplicates
var dupes int
dupedRemoteURLs := []*gtsmodel.MediaAttachment{}
if err := tx.NewSelect().
Model(&dupedRemoteURLs).
ColumnExpr("remote_url", "count(*)").
Where("remote_url IS NOT NULL").
Group("remote_url").
Having("count(*) > 1").
Scan(ctx); err != nil {
return err
}
dupes = len(dupedRemoteURLs)
l.Infof("found %d attachments with duplicate remote URLs", dupes)
for i, dupedRemoteURL := range dupedRemoteURLs {
if i%10 == 0 {
l.Infof("cleaning %d of %d", i, dupes)
}
// step 2: select all media attachments associated with this url
dupedAttachments := []*gtsmodel.MediaAttachment{}
if err := tx.NewSelect().
Model(&dupedAttachments).
Where("remote_url = ?", dupedRemoteURL.RemoteURL).
Scan(ctx); err != nil {
l.Errorf("error running same attachments query: %s", err)
continue
}
l.Debugf("found %d duplicates of attachment with remote url %s", len(dupedAttachments), dupedRemoteURL.RemoteURL)
var statusID string
statusIDLoop:
for _, dupe := range dupedAttachments {
if dupe.StatusID != "" {
statusID = dupe.StatusID
break statusIDLoop
}
}
if statusID == "" {
l.Debugf("%s not associated with a status, moving on", dupedRemoteURL.RemoteURL)
continue
}
l.Debugf("%s is associated with status %s", dupedRemoteURL.RemoteURL, statusID)
// step 3: get the status that these attachments are supposedly associated with, bail if we can't get it
status := >smodel.Status{}
if err := tx.NewSelect().
Model(status).
Where("id = ?", statusID).
Scan(ctx); err != nil {
if err != sql.ErrNoRows {
l.Errorf("error selecting status with id %s: %s", statusID, err)
}
continue
}
// step 4: for each attachment, check if it's actually one that the status is currently set to use, and delete if not
for _, dupe := range dupedAttachments {
var currentlyUsed bool
currentlyUsedLoop:
for _, attachmentID := range status.AttachmentIDs {
if attachmentID == dupe.ID {
currentlyUsed = true
break currentlyUsedLoop
}
}
if currentlyUsed {
l.Debugf("attachment with id %s is a correct current attachment, leaving it alone!", dupe.ID)
continue
}
deleteAttachment(ctx, l, dupe, s, tx)
}
}
return nil
})
}
down := func(ctx context.Context, db *bun.DB) error {
return nil
}
if err := Migrations.Register(up, down); err != nil {
panic(err)
}
}
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