dendrite/roomserver/storage/sqlite3/event_state_keys_table.go
Neil Alexander eb352a5f6b
Full roomserver input transactional isolation (#2141)
* Add transaction to all database tables in roomserver, rename latest events updater to room updater, use room updater for all RS input

* Better transaction management

* Tweak order

* Handle cases where the room does not exist

* Other fixes

* More tweaks

* Fill some gaps

* Fill in the gaps

* good lord it gets worse

* Don't roll back transactions when events rejected

* Pass through errors properly

* Fix bugs

* Fix incorrect error check

* Don't panic on nil txns

* Tweaks

* Hopefully fix panics for good in SQLite this time

* Fix rollback

* Minor bug fixes with latest event updater

* Some review comments

* Revert "Some review comments"

This reverts commit 0caf8cf53e.

* Fix a couple of bugs

* Clearer commit and rollback results

* Remove unnecessary prepares
2022-02-04 10:39:34 +00:00

174 lines
5.7 KiB
Go

// Copyright 2017-2018 New Vector Ltd
// Copyright 2019-2020 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"
"strings"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/dendrite/roomserver/storage/tables"
"github.com/matrix-org/dendrite/roomserver/types"
)
const eventStateKeysSchema = `
CREATE TABLE IF NOT EXISTS roomserver_event_state_keys (
event_state_key_nid INTEGER PRIMARY KEY AUTOINCREMENT,
event_state_key TEXT NOT NULL UNIQUE
);
INSERT INTO roomserver_event_state_keys (event_state_key_nid, event_state_key)
VALUES (1, '')
ON CONFLICT DO NOTHING;
`
// Same as insertEventTypeNIDSQL
const insertEventStateKeyNIDSQL = `
INSERT INTO roomserver_event_state_keys (event_state_key) VALUES ($1)
ON CONFLICT DO NOTHING;
`
const selectEventStateKeyNIDSQL = `
SELECT event_state_key_nid FROM roomserver_event_state_keys
WHERE event_state_key = $1
`
// Bulk lookup from string state key to numeric ID for that state key.
// Takes an array of strings as the query parameter.
const bulkSelectEventStateKeySQL = `
SELECT event_state_key, event_state_key_nid FROM roomserver_event_state_keys
WHERE event_state_key IN ($1)
`
// Bulk lookup from numeric ID to string state key for that state key.
// Takes an array of strings as the query parameter.
const bulkSelectEventStateKeyNIDSQL = `
SELECT event_state_key, event_state_key_nid FROM roomserver_event_state_keys
WHERE event_state_key_nid IN ($1)
`
type eventStateKeyStatements struct {
db *sql.DB
insertEventStateKeyNIDStmt *sql.Stmt
selectEventStateKeyNIDStmt *sql.Stmt
bulkSelectEventStateKeyNIDStmt *sql.Stmt
bulkSelectEventStateKeyStmt *sql.Stmt
}
func createEventStateKeysTable(db *sql.DB) error {
_, err := db.Exec(eventStateKeysSchema)
return err
}
func prepareEventStateKeysTable(db *sql.DB) (tables.EventStateKeys, error) {
s := &eventStateKeyStatements{
db: db,
}
return s, sqlutil.StatementList{
{&s.insertEventStateKeyNIDStmt, insertEventStateKeyNIDSQL},
{&s.selectEventStateKeyNIDStmt, selectEventStateKeyNIDSQL},
{&s.bulkSelectEventStateKeyNIDStmt, bulkSelectEventStateKeyNIDSQL},
{&s.bulkSelectEventStateKeyStmt, bulkSelectEventStateKeySQL},
}.Prepare(db)
}
func (s *eventStateKeyStatements) InsertEventStateKeyNID(
ctx context.Context, txn *sql.Tx, eventStateKey string,
) (types.EventStateKeyNID, error) {
insertStmt := sqlutil.TxStmt(txn, s.insertEventStateKeyNIDStmt)
res, err := insertStmt.ExecContext(ctx, eventStateKey)
if err != nil {
return 0, err
}
eventStateKeyNID, err := res.LastInsertId()
if err != nil {
return 0, err
}
return types.EventStateKeyNID(eventStateKeyNID), err
}
func (s *eventStateKeyStatements) SelectEventStateKeyNID(
ctx context.Context, txn *sql.Tx, eventStateKey string,
) (types.EventStateKeyNID, error) {
var eventStateKeyNID int64
stmt := sqlutil.TxStmt(txn, s.selectEventStateKeyNIDStmt)
err := stmt.QueryRowContext(ctx, eventStateKey).Scan(&eventStateKeyNID)
return types.EventStateKeyNID(eventStateKeyNID), err
}
func (s *eventStateKeyStatements) BulkSelectEventStateKeyNID(
ctx context.Context, txn *sql.Tx, eventStateKeys []string,
) (map[string]types.EventStateKeyNID, error) {
iEventStateKeys := make([]interface{}, len(eventStateKeys))
for k, v := range eventStateKeys {
iEventStateKeys[k] = v
}
selectOrig := strings.Replace(bulkSelectEventStateKeySQL, "($1)", sqlutil.QueryVariadic(len(eventStateKeys)), 1)
var rows *sql.Rows
var err error
if txn != nil {
rows, err = txn.QueryContext(ctx, selectOrig, iEventStateKeys...)
} else {
rows, err = s.db.QueryContext(ctx, selectOrig, iEventStateKeys...)
}
if err != nil {
return nil, err
}
defer internal.CloseAndLogIfError(ctx, rows, "bulkSelectEventStateKeyNID: rows.close() failed")
result := make(map[string]types.EventStateKeyNID, len(eventStateKeys))
for rows.Next() {
var stateKey string
var stateKeyNID int64
if err := rows.Scan(&stateKey, &stateKeyNID); err != nil {
return nil, err
}
result[stateKey] = types.EventStateKeyNID(stateKeyNID)
}
return result, nil
}
func (s *eventStateKeyStatements) BulkSelectEventStateKey(
ctx context.Context, txn *sql.Tx, eventStateKeyNIDs []types.EventStateKeyNID,
) (map[types.EventStateKeyNID]string, error) {
iEventStateKeyNIDs := make([]interface{}, len(eventStateKeyNIDs))
for k, v := range eventStateKeyNIDs {
iEventStateKeyNIDs[k] = v
}
selectOrig := strings.Replace(bulkSelectEventStateKeyNIDSQL, "($1)", sqlutil.QueryVariadic(len(eventStateKeyNIDs)), 1)
selectPrep, err := s.db.Prepare(selectOrig)
if err != nil {
return nil, err
}
stmt := sqlutil.TxStmt(txn, selectPrep)
rows, err := stmt.QueryContext(ctx, iEventStateKeyNIDs...)
if err != nil {
return nil, err
}
defer internal.CloseAndLogIfError(ctx, rows, "bulkSelectEventStateKey: rows.close() failed")
result := make(map[types.EventStateKeyNID]string, len(eventStateKeyNIDs))
for rows.Next() {
var stateKey string
var stateKeyNID int64
if err := rows.Scan(&stateKey, &stateKeyNID); err != nil {
return nil, err
}
result[types.EventStateKeyNID(stateKeyNID)] = stateKey
}
return result, nil
}