132 lines
3.6 KiB
Go
132 lines
3.6 KiB
Go
// Copyright 2017 Vector Creations Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package sqlite3
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import (
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"context"
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"database/sql"
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"encoding/json"
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)
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const accountDataSchema = `
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-- Stores data about accounts data.
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CREATE TABLE IF NOT EXISTS account_data (
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-- The Matrix user ID localpart for this account
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localpart TEXT NOT NULL,
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-- The room ID for this data (empty string if not specific to a room)
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room_id TEXT,
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-- The account data type
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type TEXT NOT NULL,
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-- The account data content
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content TEXT NOT NULL,
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PRIMARY KEY(localpart, room_id, type)
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);
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`
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const insertAccountDataSQL = `
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INSERT INTO account_data(localpart, room_id, type, content) VALUES($1, $2, $3, $4)
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ON CONFLICT (localpart, room_id, type) DO UPDATE SET content = $4
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`
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const selectAccountDataSQL = "" +
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"SELECT room_id, type, content FROM account_data WHERE localpart = $1"
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const selectAccountDataByTypeSQL = "" +
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"SELECT content FROM account_data WHERE localpart = $1 AND room_id = $2 AND type = $3"
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type accountDataStatements struct {
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db *sql.DB
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insertAccountDataStmt *sql.Stmt
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selectAccountDataStmt *sql.Stmt
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selectAccountDataByTypeStmt *sql.Stmt
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}
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func (s *accountDataStatements) prepare(db *sql.DB) (err error) {
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s.db = db
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_, err = db.Exec(accountDataSchema)
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if err != nil {
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return
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}
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if s.insertAccountDataStmt, err = db.Prepare(insertAccountDataSQL); err != nil {
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return
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}
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if s.selectAccountDataStmt, err = db.Prepare(selectAccountDataSQL); err != nil {
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return
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}
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if s.selectAccountDataByTypeStmt, err = db.Prepare(selectAccountDataByTypeSQL); err != nil {
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return
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}
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return
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}
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func (s *accountDataStatements) insertAccountData(
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ctx context.Context, txn *sql.Tx, localpart, roomID, dataType string, content json.RawMessage,
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) error {
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_, err := txn.Stmt(s.insertAccountDataStmt).ExecContext(ctx, localpart, roomID, dataType, content)
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return err
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}
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func (s *accountDataStatements) selectAccountData(
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ctx context.Context, localpart string,
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) (
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/* global */ map[string]json.RawMessage,
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/* rooms */ map[string]map[string]json.RawMessage,
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error,
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) {
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rows, err := s.selectAccountDataStmt.QueryContext(ctx, localpart)
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if err != nil {
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return nil, nil, err
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}
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global := map[string]json.RawMessage{}
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rooms := map[string]map[string]json.RawMessage{}
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for rows.Next() {
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var roomID string
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var dataType string
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var content []byte
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if err = rows.Scan(&roomID, &dataType, &content); err != nil {
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return nil, nil, err
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}
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if roomID != "" {
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if _, ok := rooms[roomID]; !ok {
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rooms[roomID] = map[string]json.RawMessage{}
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}
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rooms[roomID][dataType] = content
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} else {
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global[dataType] = content
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}
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}
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return global, rooms, nil
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}
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func (s *accountDataStatements) selectAccountDataByType(
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ctx context.Context, localpart, roomID, dataType string,
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) (data json.RawMessage, err error) {
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var bytes []byte
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stmt := s.selectAccountDataByTypeStmt
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if err = stmt.QueryRowContext(ctx, localpart, roomID, dataType).Scan(&bytes); err != nil {
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if err == sql.ErrNoRows {
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return nil, nil
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}
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return
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}
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data = json.RawMessage(bytes)
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return
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}
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