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// 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"
"encoding/json"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/dendrite/syncapi/storage/sqlite3/deltas"
"github.com/matrix-org/dendrite/syncapi/storage/tables"
"github.com/matrix-org/dendrite/syncapi/types"
"github.com/sirupsen/logrus"
)
const sendToDeviceSchema = `
-- Stores send-to-device messages.
CREATE TABLE IF NOT EXISTS syncapi_send_to_device (
-- The ID that uniquely identifies this message.
id INTEGER PRIMARY KEY AUTOINCREMENT,
-- The user ID to send the message to.
user_id TEXT NOT NULL,
-- The device ID to send the message to.
device_id TEXT NOT NULL,
-- The event content JSON.
content TEXT NOT NULL
);
`
const insertSendToDeviceMessageSQL = `
INSERT INTO syncapi_send_to_device (user_id, device_id, content)
VALUES ($1, $2, $3)
`
const selectSendToDeviceMessagesSQL = `
SELECT id, user_id, device_id, content
FROM syncapi_send_to_device
WHERE user_id = $1 AND device_id = $2 AND id > $3 AND id <= $4
ORDER BY id ASC
`
const deleteSendToDeviceMessagesSQL = `
DELETE FROM syncapi_send_to_device
WHERE user_id = $1 AND device_id = $2 AND id <= $3
`
const selectMaxSendToDeviceIDSQL = "" +
"SELECT MAX(id) FROM syncapi_send_to_device"
type sendToDeviceStatements struct {
db *sql.DB
insertSendToDeviceMessageStmt *sql.Stmt
selectSendToDeviceMessagesStmt *sql.Stmt
deleteSendToDeviceMessagesStmt *sql.Stmt
selectMaxSendToDeviceIDStmt *sql.Stmt
}
func NewSqliteSendToDeviceTable(db *sql.DB) (tables.SendToDevice, error) {
s := &sendToDeviceStatements{
db: db,
}
_, err := db.Exec(sendToDeviceSchema)
if err != nil {
return nil, err
}
m := sqlutil.NewMigrator(db)
m.AddMigrations(sqlutil.Migration{
Version: "syncapi: drop sent_by_token",
Up: deltas.UpRemoveSendToDeviceSentColumn,
})
err = m.Up(context.Background())
if err != nil {
return nil, err
}
if s.insertSendToDeviceMessageStmt, err = db.Prepare(insertSendToDeviceMessageSQL); err != nil {
return nil, err
}
if s.selectSendToDeviceMessagesStmt, err = db.Prepare(selectSendToDeviceMessagesSQL); err != nil {
return nil, err
}
if s.deleteSendToDeviceMessagesStmt, err = db.Prepare(deleteSendToDeviceMessagesSQL); err != nil {
return nil, err
}
if s.selectMaxSendToDeviceIDStmt, err = db.Prepare(selectMaxSendToDeviceIDSQL); err != nil {
return nil, err
}
return s, nil
}
func (s *sendToDeviceStatements) InsertSendToDeviceMessage(
ctx context.Context, txn *sql.Tx, userID, deviceID, content string,
) (pos types.StreamPosition, err error) {
var result sql.Result
result, err = sqlutil.TxStmt(txn, s.insertSendToDeviceMessageStmt).ExecContext(ctx, userID, deviceID, content)
if p, err := result.LastInsertId(); err != nil {
return 0, err
} else {
pos = types.StreamPosition(p)
}
return
}
func (s *sendToDeviceStatements) SelectSendToDeviceMessages(
ctx context.Context, txn *sql.Tx, userID, deviceID string, from, to types.StreamPosition,
) (lastPos types.StreamPosition, events []types.SendToDeviceEvent, err error) {
rows, err := sqlutil.TxStmt(txn, s.selectSendToDeviceMessagesStmt).QueryContext(ctx, userID, deviceID, from, to)
if err != nil {
return
}
defer internal.CloseAndLogIfError(ctx, rows, "SelectSendToDeviceMessages: rows.close() failed")
for rows.Next() {
var id types.StreamPosition
var userID, deviceID, content string
if err = rows.Scan(&id, &userID, &deviceID, &content); err != nil {
logrus.WithError(err).Errorf("Failed to retrieve send-to-device message")
return
}
event := types.SendToDeviceEvent{
ID: id,
UserID: userID,
DeviceID: deviceID,
}
if err = json.Unmarshal([]byte(content), &event.SendToDeviceEvent); err != nil {
logrus.WithError(err).Errorf("Failed to unmarshal send-to-device message")
continue
}
if id > lastPos {
lastPos = id
}
events = append(events, event)
}
if lastPos == 0 {
lastPos = to
}
return lastPos, events, rows.Err()
}
func (s *sendToDeviceStatements) DeleteSendToDeviceMessages(
ctx context.Context, txn *sql.Tx, userID, deviceID string, pos types.StreamPosition,
) (err error) {
_, err = sqlutil.TxStmt(txn, s.deleteSendToDeviceMessagesStmt).ExecContext(ctx, userID, deviceID, pos)
return
}
func (s *sendToDeviceStatements) SelectMaxSendToDeviceMessageID(
ctx context.Context, txn *sql.Tx,
) (id int64, err error) {
var nullableID sql.NullInt64
stmt := sqlutil.TxStmt(txn, s.selectMaxSendToDeviceIDStmt)
err = stmt.QueryRowContext(ctx).Scan(&nullableID)
if nullableID.Valid {
id = nullableID.Int64
}
return
}
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