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kvstore.go
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kvstore.go
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// beeper-imessage - A Matrix-iMessage puppeting bridge.
// Copyright (C) 2022 Tulir Asokan
//
// 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 <https://www.gnu.org/licenses/>.
package database
import (
"database/sql"
"errors"
"fmt"
log "maunium.net/go/maulogger/v2"
)
type KeyValueQuery struct {
db *Database
log log.Logger
}
const (
KVLookedForPortals = "looked_for_portals"
KVNACServToken = "nacserv_override_token"
KVNACServURL = "nacserv_override_url"
KVHackyNACErrorPersistence = "hacky_nac_error_persistence"
)
func (kvq *KeyValueQuery) Get(key string) (value string) {
err := kvq.db.QueryRow("SELECT value FROM kv_store WHERE key=$1", key).Scan(&value)
if err != nil && !errors.Is(err, sql.ErrNoRows) {
panic(fmt.Errorf("failed to scan value for %s: %w", key, err))
}
return
}
func (kvq *KeyValueQuery) Set(key, value string) {
_, err := kvq.db.Exec(`
INSERT INTO kv_store (key, value) VALUES ($1, $2)
ON CONFLICT (key) DO UPDATE SET value=excluded.value
`, key, value)
if err != nil {
panic(fmt.Errorf("failed to insert %s: %w", key, err))
}
}
func (kvq *KeyValueQuery) Delete(key string) {
_, err := kvq.db.Exec("DELETE FROM kv_store WHERE key=$1", key)
if err != nil {
panic(fmt.Errorf("failed to delete %s: %w", key, err))
}
}