Move account/device DBs to userapi (#1141)

userapi/storage/accounts/sqlite3/account_data_table.go

@@ -0,0 +1,140 @@
+// Copyright 2017 Vector Creations Ltd
+//
+// 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/gomatrixserverlib"
+)
+
+const accountDataSchema = `
+-- Stores data about accounts data.
+CREATE TABLE IF NOT EXISTS account_data (
+    -- The Matrix user ID localpart for this account
+    localpart TEXT NOT NULL,
+    -- The room ID for this data (empty string if not specific to a room)
+    room_id TEXT,
+    -- The account data type
+    type TEXT NOT NULL,
+    -- The account data content
+    content TEXT NOT NULL,
+
+    PRIMARY KEY(localpart, room_id, type)
+);
+`
+
+const insertAccountDataSQL = `
+	INSERT INTO account_data(localpart, room_id, type, content) VALUES($1, $2, $3, $4)
+	ON CONFLICT (localpart, room_id, type) DO UPDATE SET content = $4
+`
+
+const selectAccountDataSQL = "" +
+	"SELECT room_id, type, content FROM account_data WHERE localpart = $1"
+
+const selectAccountDataByTypeSQL = "" +
+	"SELECT content FROM account_data WHERE localpart = $1 AND room_id = $2 AND type = $3"
+
+type accountDataStatements struct {
+	insertAccountDataStmt       *sql.Stmt
+	selectAccountDataStmt       *sql.Stmt
+	selectAccountDataByTypeStmt *sql.Stmt
+}
+
+func (s *accountDataStatements) prepare(db *sql.DB) (err error) {
+	_, err = db.Exec(accountDataSchema)
+	if err != nil {
+		return
+	}
+	if s.insertAccountDataStmt, err = db.Prepare(insertAccountDataSQL); err != nil {
+		return
+	}
+	if s.selectAccountDataStmt, err = db.Prepare(selectAccountDataSQL); err != nil {
+		return
+	}
+	if s.selectAccountDataByTypeStmt, err = db.Prepare(selectAccountDataByTypeSQL); err != nil {
+		return
+	}
+	return
+}
+
+func (s *accountDataStatements) insertAccountData(
+	ctx context.Context, txn *sql.Tx, localpart, roomID, dataType, content string,
+) (err error) {
+	_, err = txn.Stmt(s.insertAccountDataStmt).ExecContext(ctx, localpart, roomID, dataType, content)
+	return
+}
+
+func (s *accountDataStatements) selectAccountData(
+	ctx context.Context, localpart string,
+) (
+	global []gomatrixserverlib.ClientEvent,
+	rooms map[string][]gomatrixserverlib.ClientEvent,
+	err error,
+) {
+	rows, err := s.selectAccountDataStmt.QueryContext(ctx, localpart)
+	if err != nil {
+		return
+	}
+
+	global = []gomatrixserverlib.ClientEvent{}
+	rooms = make(map[string][]gomatrixserverlib.ClientEvent)
+
+	for rows.Next() {
+		var roomID string
+		var dataType string
+		var content []byte
+
+		if err = rows.Scan(&roomID, &dataType, &content); err != nil {
+			return
+		}
+
+		ac := gomatrixserverlib.ClientEvent{
+			Type:    dataType,
+			Content: content,
+		}
+
+		if len(roomID) > 0 {
+			rooms[roomID] = append(rooms[roomID], ac)
+		} else {
+			global = append(global, ac)
+		}
+	}
+
+	return
+}
+
+func (s *accountDataStatements) selectAccountDataByType(
+	ctx context.Context, localpart, roomID, dataType string,
+) (data *gomatrixserverlib.ClientEvent, err error) {
+	stmt := s.selectAccountDataByTypeStmt
+	var content []byte
+
+	if err = stmt.QueryRowContext(ctx, localpart, roomID, dataType).Scan(&content); err != nil {
+		if err == sql.ErrNoRows {
+			return nil, nil
+		}
+
+		return
+	}
+
+	data = &gomatrixserverlib.ClientEvent{
+		Type:    dataType,
+		Content: content,
+	}
+
+	return
+}