gotosocial/internal/db/bundb/mention.go

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/*
GoToSocial
Copyright (C) 2021 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 bundb
import (
"context"
"github.com/sirupsen/logrus"
"github.com/superseriousbusiness/gotosocial/internal/cache"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/uptrace/bun"
)
type mentionDB struct {
config *config.Config
conn *bun.DB
log *logrus.Logger
cache cache.Cache
}
func (m *mentionDB) cacheMention(id string, mention *gtsmodel.Mention) {
if m.cache == nil {
m.cache = cache.New()
}
if err := m.cache.Store(id, mention); err != nil {
m.log.Panicf("mentionDB: error storing in cache: %s", err)
}
}
func (m *mentionDB) mentionCached(id string) (*gtsmodel.Mention, bool) {
if m.cache == nil {
m.cache = cache.New()
return nil, false
}
mI, err := m.cache.Fetch(id)
if err != nil || mI == nil {
return nil, false
}
mention, ok := mI.(*gtsmodel.Mention)
if !ok {
m.log.Panicf("mentionDB: cached interface with key %s was not a mention", id)
}
return mention, true
}
func (m *mentionDB) newMentionQ(i interface{}) *bun.SelectQuery {
return m.conn.
NewSelect().
Model(i).
Relation("Status").
Relation("OriginAccount").
Relation("TargetAccount")
}
func (m *mentionDB) GetMention(ctx context.Context, id string) (*gtsmodel.Mention, db.Error) {
if mention, cached := m.mentionCached(id); cached {
return mention, nil
}
mention := &gtsmodel.Mention{}
q := m.newMentionQ(mention).
Where("mention.id = ?", id)
err := processErrorResponse(q.Scan(ctx))
if err == nil && mention != nil {
m.cacheMention(id, mention)
}
return mention, err
}
func (m *mentionDB) GetMentions(ctx context.Context, ids []string) ([]*gtsmodel.Mention, db.Error) {
mentions := []*gtsmodel.Mention{}
for _, i := range ids {
mention, err := m.GetMention(ctx, i)
if err != nil {
return nil, processErrorResponse(err)
}
mentions = append(mentions, mention)
}
return mentions, nil
}