dendrite/roomserver/storage/sqlite3/event_state_keys_table.go

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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"
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"github.com/lib/pq"
"github.com/matrix-org/dendrite/common"
"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 insertEventStateKeyNIDResultSQL = `
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SELECT event_state_key_nid FROM roomserver_event_state_keys
WHERE rowid = last_insert_rowid();
`
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 bulkSelectEventStateKeyNIDSQL = `
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 bulkSelectEventStateKeySQL = `
SELECT event_state_key, event_state_key_nid FROM roomserver_event_state_keys
WHERE event_state_key_nid IN ($1)
`
type eventStateKeyStatements struct {
insertEventStateKeyNIDStmt *sql.Stmt
insertEventStateKeyNIDResultStmt *sql.Stmt
selectEventStateKeyNIDStmt *sql.Stmt
bulkSelectEventStateKeyNIDStmt *sql.Stmt
bulkSelectEventStateKeyStmt *sql.Stmt
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}
func (s *eventStateKeyStatements) prepare(db *sql.DB) (err error) {
_, err = db.Exec(eventStateKeysSchema)
if err != nil {
return
}
return statementList{
{&s.insertEventStateKeyNIDStmt, insertEventStateKeyNIDSQL},
{&s.insertEventStateKeyNIDResultStmt, insertEventStateKeyNIDResultSQL},
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{&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) {
var eventStateKeyNID int64
var err error
insertStmt := common.TxStmt(txn, s.insertEventStateKeyNIDStmt)
selectStmt := common.TxStmt(txn, s.insertEventStateKeyNIDResultStmt)
if _, err = insertStmt.ExecContext(ctx, eventStateKey); err == nil {
err = selectStmt.QueryRowContext(ctx).Scan(&eventStateKeyNID)
if err != nil {
fmt.Println("insertEventStateKeyNID selectStmt.QueryRowContext:", err)
}
} else {
fmt.Println("insertEventStateKeyNID insertStmt.ExecContext:", err)
}
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return types.EventStateKeyNID(eventStateKeyNID), err
}
func (s *eventStateKeyStatements) selectEventStateKeyNID(
ctx context.Context, txn *sql.Tx, eventStateKey string,
) (types.EventStateKeyNID, error) {
var eventStateKeyNID int64
stmt := common.TxStmt(txn, s.selectEventStateKeyNIDStmt)
err := stmt.QueryRowContext(ctx, eventStateKey).Scan(&eventStateKeyNID)
if err != nil {
fmt.Println("selectEventStateKeyNID stmt.QueryRowContext:", err)
}
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return types.EventStateKeyNID(eventStateKeyNID), err
}
func (s *eventStateKeyStatements) bulkSelectEventStateKeyNID(
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ctx context.Context, txn *sql.Tx, eventStateKeys []string,
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) (map[string]types.EventStateKeyNID, error) {
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rows, err := common.TxStmt(txn, s.bulkSelectEventStateKeyNIDStmt).QueryContext(
ctx, sqliteInStr(pq.StringArray(eventStateKeys)),
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)
if err != nil {
fmt.Println("bulkSelectEventStateKeyNID s.bulkSelectEventStateKeyNIDStmt.QueryContext:", err)
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return nil, err
}
defer rows.Close() // nolint: errcheck
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 {
fmt.Println("bulkSelectEventStateKeyNID rows.Scan:", err)
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return nil, err
}
result[stateKey] = types.EventStateKeyNID(stateKeyNID)
}
return result, nil
}
func (s *eventStateKeyStatements) bulkSelectEventStateKey(
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ctx context.Context, txn *sql.Tx, eventStateKeyNIDs []types.EventStateKeyNID,
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) (map[types.EventStateKeyNID]string, error) {
nIDs := make(pq.Int64Array, len(eventStateKeyNIDs))
for i := range eventStateKeyNIDs {
nIDs[i] = int64(eventStateKeyNIDs[i])
}
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rows, err := common.TxStmt(txn, s.bulkSelectEventStateKeyStmt).QueryContext(ctx, nIDs)
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if err != nil {
fmt.Println("bulkSelectEventStateKey s.bulkSelectEventStateKeyStmt.QueryContext:", err)
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return nil, err
}
defer rows.Close() // nolint: errcheck
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 {
fmt.Println("bulkSelectEventStateKey rows.Scan:", err)
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return nil, err
}
result[types.EventStateKeyNID(stateKeyNID)] = stateKey
}
return result, nil
}