dendrite/federationapi/storage/sqlite3/assumed_offline_table.go
kegsay 72285b2659
refactor: update GMSL (#3058)
Sister PR to https://github.com/matrix-org/gomatrixserverlib/pull/364

Read this commit by commit to avoid going insane.
2023-04-19 15:50:33 +01:00

108 lines
3.3 KiB
Go

// Copyright 2022 The Matrix.org Foundation C.I.C.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package sqlite3
import (
"context"
"database/sql"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/gomatrixserverlib/spec"
)
const assumedOfflineSchema = `
CREATE TABLE IF NOT EXISTS federationsender_assumed_offline(
-- The assumed offline server name
server_name TEXT PRIMARY KEY NOT NULL
);
`
const insertAssumedOfflineSQL = "" +
"INSERT INTO federationsender_assumed_offline (server_name) VALUES ($1)" +
" ON CONFLICT DO NOTHING"
const selectAssumedOfflineSQL = "" +
"SELECT server_name FROM federationsender_assumed_offline WHERE server_name = $1"
const deleteAssumedOfflineSQL = "" +
"DELETE FROM federationsender_assumed_offline WHERE server_name = $1"
const deleteAllAssumedOfflineSQL = "" +
"DELETE FROM federationsender_assumed_offline"
type assumedOfflineStatements struct {
db *sql.DB
insertAssumedOfflineStmt *sql.Stmt
selectAssumedOfflineStmt *sql.Stmt
deleteAssumedOfflineStmt *sql.Stmt
deleteAllAssumedOfflineStmt *sql.Stmt
}
func NewSQLiteAssumedOfflineTable(db *sql.DB) (s *assumedOfflineStatements, err error) {
s = &assumedOfflineStatements{
db: db,
}
_, err = db.Exec(assumedOfflineSchema)
if err != nil {
return
}
return s, sqlutil.StatementList{
{&s.insertAssumedOfflineStmt, insertAssumedOfflineSQL},
{&s.selectAssumedOfflineStmt, selectAssumedOfflineSQL},
{&s.deleteAssumedOfflineStmt, deleteAssumedOfflineSQL},
{&s.deleteAllAssumedOfflineStmt, deleteAllAssumedOfflineSQL},
}.Prepare(db)
}
func (s *assumedOfflineStatements) InsertAssumedOffline(
ctx context.Context, txn *sql.Tx, serverName spec.ServerName,
) error {
stmt := sqlutil.TxStmt(txn, s.insertAssumedOfflineStmt)
_, err := stmt.ExecContext(ctx, serverName)
return err
}
func (s *assumedOfflineStatements) SelectAssumedOffline(
ctx context.Context, txn *sql.Tx, serverName spec.ServerName,
) (bool, error) {
stmt := sqlutil.TxStmt(txn, s.selectAssumedOfflineStmt)
res, err := stmt.QueryContext(ctx, serverName)
if err != nil {
return false, err
}
defer res.Close() // nolint:errcheck
// The query will return the server name if the server is assume offline, and
// will return no rows if not. By calling Next, we find out if a row was
// returned or not - we don't care about the value itself.
return res.Next(), nil
}
func (s *assumedOfflineStatements) DeleteAssumedOffline(
ctx context.Context, txn *sql.Tx, serverName spec.ServerName,
) error {
stmt := sqlutil.TxStmt(txn, s.deleteAssumedOfflineStmt)
_, err := stmt.ExecContext(ctx, serverName)
return err
}
func (s *assumedOfflineStatements) DeleteAllAssumedOffline(
ctx context.Context, txn *sql.Tx,
) error {
stmt := sqlutil.TxStmt(txn, s.deleteAllAssumedOfflineStmt)
_, err := stmt.ExecContext(ctx)
return err
}