GoToSocial/internal/media/pruneremote.go

97 lines
3.3 KiB
Go

/*
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 media
import (
"context"
"fmt"
"time"
"codeberg.org/gruf/go-store/storage"
"github.com/sirupsen/logrus"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
)
// amount of media attachments to select at a time from the db when pruning
const selectPruneLimit = 20
func (m *manager) PruneRemote(ctx context.Context, olderThanDays int) (int, error) {
var totalPruned int
// convert days into a duration string
olderThanHoursString := fmt.Sprintf("%dh", olderThanDays*24)
// parse the duration string into a duration
olderThanHours, err := time.ParseDuration(olderThanHoursString)
if err != nil {
return totalPruned, fmt.Errorf("PruneRemote: %d", err)
}
// 'subtract' that from the time now to give our threshold
olderThan := time.Now().Add(-olderThanHours)
logrus.Infof("PruneRemote: pruning media older than %s", olderThan)
// select 20 attachments at a time and prune them
for attachments, err := m.db.GetRemoteOlderThan(ctx, olderThan, selectPruneLimit); err == nil && len(attachments) != 0; attachments, err = m.db.GetRemoteOlderThan(ctx, olderThan, selectPruneLimit) {
// use the age of the oldest attachment (the last one in the slice) as the next 'older than' value
l := len(attachments)
logrus.Tracef("PruneRemote: got %d attachments older than %s", l, olderThan)
olderThan = attachments[l-1].CreatedAt
// prune each attachment
for _, attachment := range attachments {
if err := m.PruneOne(ctx, attachment); err != nil {
return totalPruned, err
}
totalPruned++
}
}
// make sure we don't have a real error when we leave the loop
if err != nil && err != db.ErrNoEntries {
return totalPruned, err
}
logrus.Infof("PruneRemote: finished pruning remote media: pruned %d entries", totalPruned)
return totalPruned, nil
}
func (m *manager) PruneOne(ctx context.Context, attachment *gtsmodel.MediaAttachment) error {
if attachment.File.Path != "" {
// delete the full size attachment from storage
logrus.Tracef("PruneOne: deleting %s", attachment.File.Path)
if err := m.storage.Delete(attachment.File.Path); err != nil && err != storage.ErrNotFound {
return err
}
attachment.Cached = false
}
if attachment.Thumbnail.Path != "" {
// delete the thumbnail from storage
logrus.Tracef("PruneOne: deleting %s", attachment.Thumbnail.Path)
if err := m.storage.Delete(attachment.Thumbnail.Path); err != nil && err != storage.ErrNotFound {
return err
}
attachment.Cached = false
}
// update the attachment to reflect that we no longer have it cached
return m.db.UpdateByPrimaryKey(ctx, attachment)
}