140 lines
3.3 KiB
Go
140 lines
3.3 KiB
Go
/*
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GoToSocial
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Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package bundb
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import (
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"context"
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"github.com/ReneKroon/ttlcache"
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"github.com/superseriousbusiness/gotosocial/internal/db"
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"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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"github.com/uptrace/bun"
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)
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type notificationDB struct {
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conn *DBConn
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cache *ttlcache.Cache
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}
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func (n *notificationDB) newNotificationQ(i interface{}) *bun.SelectQuery {
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return n.conn.
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NewSelect().
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Model(i).
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Relation("OriginAccount").
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Relation("TargetAccount").
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Relation("Status")
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}
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func (n *notificationDB) GetNotification(ctx context.Context, id string) (*gtsmodel.Notification, db.Error) {
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if notification, cached := n.getNotificationCache(id); cached {
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return notification, nil
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}
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notif := >smodel.Notification{}
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err := n.getNotificationDB(ctx, id, notif)
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if err != nil {
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return nil, err
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}
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return notif, nil
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}
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func (n *notificationDB) GetNotifications(ctx context.Context, accountID string, limit int, maxID string, sinceID string) ([]*gtsmodel.Notification, db.Error) {
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// Ensure reasonable
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if limit < 0 {
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limit = 0
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}
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// Make a guess for slice size
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notifications := make([]*gtsmodel.Notification, 0, limit)
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q := n.conn.
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NewSelect().
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Model(¬ifications).
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Column("id")
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if maxID != "" {
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q = q.Where("id < ?", maxID)
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}
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if sinceID != "" {
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q = q.Where("id > ?", sinceID)
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}
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q = q.
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Where("target_account_id = ?", accountID).
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Order("id DESC")
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if limit != 0 {
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q = q.Limit(limit)
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}
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err := q.Scan(ctx)
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if err != nil {
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return nil, n.conn.ProcessError(err)
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}
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// now we have the IDs, select the notifs one by one
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// reason for this is that for each notif, we can instead get it from our cache if it's cached
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for i, notif := range notifications {
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// Check cache for notification
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nn, cached := n.getNotificationCache(notif.ID)
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if cached {
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notifications[i] = nn
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continue
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}
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// Check DB for notification
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err := n.getNotificationDB(ctx, notif.ID, notif)
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if err != nil {
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return nil, err
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}
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}
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return notifications, nil
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}
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func (n *notificationDB) getNotificationCache(id string) (*gtsmodel.Notification, bool) {
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v, ok := n.cache.Get(id)
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if !ok {
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return nil, false
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}
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notif, ok := v.(*gtsmodel.Notification)
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if !ok {
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panic("notification cache entry was not a notification")
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}
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return notif, true
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}
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func (n *notificationDB) putNotificationCache(notif *gtsmodel.Notification) {
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n.cache.Set(notif.ID, notif)
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}
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func (n *notificationDB) getNotificationDB(ctx context.Context, id string, dst *gtsmodel.Notification) error {
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q := n.newNotificationQ(dst).WherePK()
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if err := q.Scan(ctx); err != nil {
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return n.conn.ProcessError(err)
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}
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n.putNotificationCache(dst)
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return nil
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}
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