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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 postgres
import (
"context"
"database/sql"
"encoding/json"
"github.com/lib/pq"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/dendrite/syncapi/storage/tables"
"github.com/matrix-org/dendrite/syncapi/types"
)
const sendToDeviceSchema = `
CREATE SEQUENCE IF NOT EXISTS syncapi_send_to_device_id;
-- Stores send-to-device messages.
CREATE TABLE IF NOT EXISTS syncapi_send_to_device (
-- The ID that uniquely identifies this message.
id BIGINT PRIMARY KEY DEFAULT nextval('syncapi_send_to_device_id'),
-- 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,
-- The token that was supplied to the /sync at the time that this
-- message was included in a sync response, or NULL if we haven't
-- included it in a /sync response yet.
sent_by_token TEXT
);
`
const insertSendToDeviceMessageSQL = `
INSERT INTO syncapi_send_to_device (user_id, device_id, content)
VALUES ($1, $2, $3)
RETURNING id
`
const countSendToDeviceMessagesSQL = `
SELECT COUNT(*)
FROM syncapi_send_to_device
WHERE user_id = $1 AND device_id = $2
`
const selectSendToDeviceMessagesSQL = `
SELECT id, user_id, device_id, content, sent_by_token
FROM syncapi_send_to_device
WHERE user_id = $1 AND device_id = $2
ORDER BY id DESC
`
const updateSentSendToDeviceMessagesSQL = `
UPDATE syncapi_send_to_device SET sent_by_token = $1
WHERE id = ANY($2)
`
const deleteSendToDeviceMessagesSQL = `
DELETE FROM syncapi_send_to_device WHERE id = ANY($1)
`
type sendToDeviceStatements struct {
insertSendToDeviceMessageStmt *sql.Stmt
countSendToDeviceMessagesStmt *sql.Stmt
selectSendToDeviceMessagesStmt *sql.Stmt
updateSentSendToDeviceMessagesStmt *sql.Stmt
deleteSendToDeviceMessagesStmt *sql.Stmt
}
func NewPostgresSendToDeviceTable(db *sql.DB) (tables.SendToDevice, error) {
s := &sendToDeviceStatements{}
_, err := db.Exec(sendToDeviceSchema)
if err != nil {
return nil, err
}
if s.insertSendToDeviceMessageStmt, err = db.Prepare(insertSendToDeviceMessageSQL); err != nil {
return nil, err
}
if s.countSendToDeviceMessagesStmt, err = db.Prepare(countSendToDeviceMessagesSQL); err != nil {
return nil, err
}
if s.selectSendToDeviceMessagesStmt, err = db.Prepare(selectSendToDeviceMessagesSQL); err != nil {
return nil, err
}
if s.updateSentSendToDeviceMessagesStmt, err = db.Prepare(updateSentSendToDeviceMessagesSQL); err != nil {
return nil, err
}
if s.deleteSendToDeviceMessagesStmt, err = db.Prepare(deleteSendToDeviceMessagesSQL); 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) {
err = sqlutil.TxStmt(txn, s.insertSendToDeviceMessageStmt).QueryRowContext(ctx, userID, deviceID, content).Scan(&pos)
return
}
func (s *sendToDeviceStatements) CountSendToDeviceMessages(
ctx context.Context, txn *sql.Tx, userID, deviceID string,
) (count int, err error) {
row := sqlutil.TxStmt(txn, s.countSendToDeviceMessagesStmt).QueryRowContext(ctx, userID, deviceID)
if err = row.Scan(&count); err != nil {
return
}
return count, nil
}
func (s *sendToDeviceStatements) SelectSendToDeviceMessages(
ctx context.Context, txn *sql.Tx, userID, deviceID string,
) (lastPos types.StreamPosition, events []types.SendToDeviceEvent, err error) {
rows, err := sqlutil.TxStmt(txn, s.selectSendToDeviceMessagesStmt).QueryContext(ctx, userID, deviceID)
if err != nil {
return
}
defer internal.CloseAndLogIfError(ctx, rows, "SelectSendToDeviceMessages: rows.close() failed")
for rows.Next() {
var id types.SendToDeviceNID
var userID, deviceID, content string
var sentByToken *string
if err = rows.Scan(&id, &userID, &deviceID, &content, &sentByToken); err != nil {
return
}
event := types.SendToDeviceEvent{
ID: id,
UserID: userID,
DeviceID: deviceID,
}
if err = json.Unmarshal([]byte(content), &event.SendToDeviceEvent); err != nil {
return
}
if sentByToken != nil {
if token, err := types.NewStreamTokenFromString(*sentByToken); err == nil {
event.SentByToken = &token
}
}
events = append(events, event)
if types.StreamPosition(id) > lastPos {
lastPos = types.StreamPosition(id)
}
}
return lastPos, events, rows.Err()
}
func (s *sendToDeviceStatements) UpdateSentSendToDeviceMessages(
ctx context.Context, txn *sql.Tx, token string, nids []types.SendToDeviceNID,
) (err error) {
_, err = sqlutil.TxStmt(txn, s.updateSentSendToDeviceMessagesStmt).ExecContext(ctx, token, pq.Array(nids))
return
}
func (s *sendToDeviceStatements) DeleteSendToDeviceMessages(
ctx context.Context, txn *sql.Tx, nids []types.SendToDeviceNID,
) (err error) {
_, err = sqlutil.TxStmt(txn, s.deleteSendToDeviceMessagesStmt).ExecContext(ctx, pq.Array(nids))
return
}
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