dendrite/userapi/storage/devices/sqlite3/devices_table.go
Neil Alexander 9d53351dc2
Component-wide TransactionWriters (#1290)
* Offset updates take place using TransactionWriter

* Refactor TransactionWriter in current state server

* Refactor TransactionWriter in federation sender

* Refactor TransactionWriter in key server

* Refactor TransactionWriter in media API

* Refactor TransactionWriter in server key API

* Refactor TransactionWriter in sync API

* Refactor TransactionWriter in user API

* Fix deadlocking Sync API tests

* Un-deadlock device database

* Fix appservice API

* Rename TransactionWriters to Writers

* Move writers up a layer in sync API

* Document sqlutil.Writer interface

* Add note to Writer documentation
2020-08-21 10:42:08 +01:00

292 lines
8.7 KiB
Go

// 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"
"strings"
"time"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/dendrite/userapi/api"
"github.com/matrix-org/dendrite/clientapi/userutil"
"github.com/matrix-org/gomatrixserverlib"
)
const devicesSchema = `
-- This sequence is used for automatic allocation of session_id.
-- CREATE SEQUENCE IF NOT EXISTS device_session_id_seq START 1;
-- Stores data about devices.
CREATE TABLE IF NOT EXISTS device_devices (
access_token TEXT PRIMARY KEY,
session_id INTEGER,
device_id TEXT ,
localpart TEXT ,
created_ts BIGINT,
display_name TEXT,
UNIQUE (localpart, device_id)
);
`
const insertDeviceSQL = "" +
"INSERT INTO device_devices (device_id, localpart, access_token, created_ts, display_name, session_id)" +
" VALUES ($1, $2, $3, $4, $5, $6)"
const selectDevicesCountSQL = "" +
"SELECT COUNT(access_token) FROM device_devices"
const selectDeviceByTokenSQL = "" +
"SELECT session_id, device_id, localpart FROM device_devices WHERE access_token = $1"
const selectDeviceByIDSQL = "" +
"SELECT display_name FROM device_devices WHERE localpart = $1 and device_id = $2"
const selectDevicesByLocalpartSQL = "" +
"SELECT device_id, display_name FROM device_devices WHERE localpart = $1"
const updateDeviceNameSQL = "" +
"UPDATE device_devices SET display_name = $1 WHERE localpart = $2 AND device_id = $3"
const deleteDeviceSQL = "" +
"DELETE FROM device_devices WHERE device_id = $1 AND localpart = $2"
const deleteDevicesByLocalpartSQL = "" +
"DELETE FROM device_devices WHERE localpart = $1"
const deleteDevicesSQL = "" +
"DELETE FROM device_devices WHERE localpart = $1 AND device_id IN ($2)"
const selectDevicesByIDSQL = "" +
"SELECT device_id, localpart, display_name FROM device_devices WHERE device_id IN ($1)"
type devicesStatements struct {
db *sql.DB
writer sqlutil.Writer
insertDeviceStmt *sql.Stmt
selectDevicesCountStmt *sql.Stmt
selectDeviceByTokenStmt *sql.Stmt
selectDeviceByIDStmt *sql.Stmt
selectDevicesByIDStmt *sql.Stmt
selectDevicesByLocalpartStmt *sql.Stmt
updateDeviceNameStmt *sql.Stmt
deleteDeviceStmt *sql.Stmt
deleteDevicesByLocalpartStmt *sql.Stmt
serverName gomatrixserverlib.ServerName
}
func (s *devicesStatements) prepare(db *sql.DB, writer sqlutil.Writer, server gomatrixserverlib.ServerName) (err error) {
s.db = db
s.writer = writer
_, err = db.Exec(devicesSchema)
if err != nil {
return
}
if s.insertDeviceStmt, err = db.Prepare(insertDeviceSQL); err != nil {
return
}
if s.selectDevicesCountStmt, err = db.Prepare(selectDevicesCountSQL); err != nil {
return
}
if s.selectDeviceByTokenStmt, err = db.Prepare(selectDeviceByTokenSQL); err != nil {
return
}
if s.selectDeviceByIDStmt, err = db.Prepare(selectDeviceByIDSQL); err != nil {
return
}
if s.selectDevicesByLocalpartStmt, err = db.Prepare(selectDevicesByLocalpartSQL); err != nil {
return
}
if s.updateDeviceNameStmt, err = db.Prepare(updateDeviceNameSQL); err != nil {
return
}
if s.deleteDeviceStmt, err = db.Prepare(deleteDeviceSQL); err != nil {
return
}
if s.deleteDevicesByLocalpartStmt, err = db.Prepare(deleteDevicesByLocalpartSQL); err != nil {
return
}
if s.selectDevicesByIDStmt, err = db.Prepare(selectDevicesByIDSQL); err != nil {
return
}
s.serverName = server
return
}
// insertDevice creates a new device. Returns an error if any device with the same access token already exists.
// Returns an error if the user already has a device with the given device ID.
// Returns the device on success.
func (s *devicesStatements) insertDevice(
ctx context.Context, txn *sql.Tx, id, localpart, accessToken string,
displayName *string,
) (*api.Device, error) {
createdTimeMS := time.Now().UnixNano() / 1000000
var sessionID int64
countStmt := sqlutil.TxStmt(txn, s.selectDevicesCountStmt)
insertStmt := sqlutil.TxStmt(txn, s.insertDeviceStmt)
if err := countStmt.QueryRowContext(ctx).Scan(&sessionID); err != nil {
return nil, err
}
sessionID++
if _, err := insertStmt.ExecContext(ctx, id, localpart, accessToken, createdTimeMS, displayName, sessionID); err != nil {
return nil, err
}
return &api.Device{
ID: id,
UserID: userutil.MakeUserID(localpart, s.serverName),
AccessToken: accessToken,
SessionID: sessionID,
}, nil
}
func (s *devicesStatements) deleteDevice(
ctx context.Context, txn *sql.Tx, id, localpart string,
) error {
stmt := sqlutil.TxStmt(txn, s.deleteDeviceStmt)
_, err := stmt.ExecContext(ctx, id, localpart)
return err
}
func (s *devicesStatements) deleteDevices(
ctx context.Context, txn *sql.Tx, localpart string, devices []string,
) error {
orig := strings.Replace(deleteDevicesSQL, "($2)", sqlutil.QueryVariadicOffset(len(devices), 1), 1)
prep, err := s.db.Prepare(orig)
if err != nil {
return err
}
stmt := sqlutil.TxStmt(txn, prep)
params := make([]interface{}, len(devices)+1)
params[0] = localpart
for i, v := range devices {
params[i+1] = v
}
_, err = stmt.ExecContext(ctx, params...)
return err
}
func (s *devicesStatements) deleteDevicesByLocalpart(
ctx context.Context, txn *sql.Tx, localpart string,
) error {
stmt := sqlutil.TxStmt(txn, s.deleteDevicesByLocalpartStmt)
_, err := stmt.ExecContext(ctx, localpart)
return err
}
func (s *devicesStatements) updateDeviceName(
ctx context.Context, txn *sql.Tx, localpart, deviceID string, displayName *string,
) error {
stmt := sqlutil.TxStmt(txn, s.updateDeviceNameStmt)
_, err := stmt.ExecContext(ctx, displayName, localpart, deviceID)
return err
}
func (s *devicesStatements) selectDeviceByToken(
ctx context.Context, accessToken string,
) (*api.Device, error) {
var dev api.Device
var localpart string
stmt := s.selectDeviceByTokenStmt
err := stmt.QueryRowContext(ctx, accessToken).Scan(&dev.SessionID, &dev.ID, &localpart)
if err == nil {
dev.UserID = userutil.MakeUserID(localpart, s.serverName)
dev.AccessToken = accessToken
}
return &dev, err
}
// selectDeviceByID retrieves a device from the database with the given user
// localpart and deviceID
func (s *devicesStatements) selectDeviceByID(
ctx context.Context, localpart, deviceID string,
) (*api.Device, error) {
var dev api.Device
var displayName sql.NullString
stmt := s.selectDeviceByIDStmt
err := stmt.QueryRowContext(ctx, localpart, deviceID).Scan(&displayName)
if err == nil {
dev.ID = deviceID
dev.UserID = userutil.MakeUserID(localpart, s.serverName)
if displayName.Valid {
dev.DisplayName = displayName.String
}
}
return &dev, err
}
func (s *devicesStatements) selectDevicesByLocalpart(
ctx context.Context, localpart string,
) ([]api.Device, error) {
devices := []api.Device{}
rows, err := s.selectDevicesByLocalpartStmt.QueryContext(ctx, localpart)
if err != nil {
return devices, err
}
for rows.Next() {
var dev api.Device
var id, displayname sql.NullString
err = rows.Scan(&id, &displayname)
if err != nil {
return devices, err
}
if id.Valid {
dev.ID = id.String
}
if displayname.Valid {
dev.DisplayName = displayname.String
}
dev.UserID = userutil.MakeUserID(localpart, s.serverName)
devices = append(devices, dev)
}
return devices, nil
}
func (s *devicesStatements) selectDevicesByID(ctx context.Context, deviceIDs []string) ([]api.Device, error) {
sqlQuery := strings.Replace(selectDevicesByIDSQL, "($1)", sqlutil.QueryVariadic(len(deviceIDs)), 1)
iDeviceIDs := make([]interface{}, len(deviceIDs))
for i := range deviceIDs {
iDeviceIDs[i] = deviceIDs[i]
}
rows, err := s.db.QueryContext(ctx, sqlQuery, iDeviceIDs...)
if err != nil {
return nil, err
}
defer internal.CloseAndLogIfError(ctx, rows, "selectDevicesByID: rows.close() failed")
var devices []api.Device
for rows.Next() {
var dev api.Device
var localpart string
var displayName sql.NullString
if err := rows.Scan(&dev.ID, &localpart, &displayName); err != nil {
return nil, err
}
if displayName.Valid {
dev.DisplayName = displayName.String
}
dev.UserID = userutil.MakeUserID(localpart, s.serverName)
devices = append(devices, dev)
}
return devices, rows.Err()
}