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// 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"
"fmt"
"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
RETURNING event_state_key_nid;
`
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,
) (eventStateKeyNID types.EventStateKeyNID, err error) {
insertStmt := sqlutil.TxStmt(txn, s.insertEventStateKeyNIDStmt)
if err := insertStmt.QueryRowContext(ctx, eventStateKey).Scan(&eventStateKeyNID); err != nil {
return 0, fmt.Errorf("resultStmt.QueryRowContext.Scan: %w", err)
}
return
}
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
}
defer internal.CloseAndLogIfError(ctx, selectPrep, "selectPrep.close() failed")
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
}
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