1 files changed, 101 insertions, 0 deletions
diff --git a/internal/db/bundb/tombstone.go b/internal/db/bundb/tombstone.go
new file mode 100644
index 000000000..35032f43a
--- /dev/null
+++ b/internal/db/bundb/tombstone.go
@@ -0,0 +1,101 @@
+/*
+   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 bundb
+
+import (
+	"context"
+	"time"
+
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/uptrace/bun"
+
+	"codeberg.org/gruf/go-cache/v3/result"
+)
+
+type tombstoneDB struct {
+	conn  *DBConn
+	cache *result.Cache[*gtsmodel.Tombstone]
+}
+
+func (t *tombstoneDB) init() {
+	// Initialize tombstone result cache
+	t.cache = result.NewSized([]string{
+		"ID",
+		"URI",
+	}, func(t1 *gtsmodel.Tombstone) *gtsmodel.Tombstone {
+		t2 := new(gtsmodel.Tombstone)
+		*t2 = *t1
+		return t2
+	}, 1000)
+
+	// Set cache TTL and start sweep routine
+	t.cache.SetTTL(time.Minute*5, false)
+	t.cache.Start(time.Second * 10)
+}
+
+func (t *tombstoneDB) GetTombstoneByURI(ctx context.Context, uri string) (*gtsmodel.Tombstone, db.Error) {
+	return t.cache.Load("URI", func() (*gtsmodel.Tombstone, error) {
+		var tomb gtsmodel.Tombstone
+
+		q := t.conn.
+			NewSelect().
+			Model(&tomb).
+			Where("? = ?", bun.Ident("tombstone.uri"), uri)
+
+		if err := q.Scan(ctx); err != nil {
+			return nil, t.conn.ProcessError(err)
+		}
+
+		return &tomb, nil
+	}, uri)
+}
+
+func (t *tombstoneDB) TombstoneExistsWithURI(ctx context.Context, uri string) (bool, db.Error) {
+	tomb, err := t.GetTombstoneByURI(ctx, uri)
+	if err == db.ErrNoEntries {
+		err = nil
+	}
+	return (tomb != nil), err
+}
+
+func (t *tombstoneDB) PutTombstone(ctx context.Context, tombstone *gtsmodel.Tombstone) db.Error {
+	return t.cache.Store(tombstone, func() error {
+		_, err := t.conn.
+			NewInsert().
+			Model(tombstone).
+			Exec(ctx)
+		return t.conn.ProcessError(err)
+	})
+}
+
+func (t *tombstoneDB) DeleteTombstone(ctx context.Context, id string) db.Error {
+	if _, err := t.conn.
+		NewDelete().
+		TableExpr("? AS ?", bun.Ident("tombstones"), bun.Ident("tombstone")).
+		Where("? = ?", bun.Ident("tombstone.id"), id).
+		Exec(ctx); err != nil {
+		return t.conn.ProcessError(err)
+	}
+
+	// Invalidate from cache by ID
+	t.cache.Invalidate("ID", id)
+
+	return nil
+}