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// Copyright 2017-2018 New Vector Ltd
// 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"
"github.com/lib/pq"
"github.com/matrix-org/dendrite/common"
"github.com/matrix-org/dendrite/syncapi/types"
"github.com/matrix-org/gomatrixserverlib"
)
const accountDataSchema = `
-- This sequence is shared between all the tables generated from kafka logs.
CREATE SEQUENCE IF NOT EXISTS syncapi_stream_id;
-- Stores the types of account data that a user set has globally and in each room
-- and the stream ID when that type was last updated.
CREATE TABLE IF NOT EXISTS syncapi_account_data_type (
-- An incrementing ID which denotes the position in the log that this event resides at.
id BIGINT PRIMARY KEY DEFAULT nextval('syncapi_stream_id'),
-- ID of the user the data belongs to
user_id TEXT NOT NULL,
-- ID of the room the data is related to (empty string if not related to a specific room)
room_id TEXT NOT NULL,
-- Type of the data
type TEXT NOT NULL,
-- We don't want two entries of the same type for the same user
CONSTRAINT syncapi_account_data_unique UNIQUE (user_id, room_id, type)
);
CREATE UNIQUE INDEX IF NOT EXISTS syncapi_account_data_id_idx ON syncapi_account_data_type(id, type);
`
const insertAccountDataSQL = "" +
"INSERT INTO syncapi_account_data_type (user_id, room_id, type) VALUES ($1, $2, $3)" +
" ON CONFLICT ON CONSTRAINT syncapi_account_data_unique" +
" DO UPDATE SET id = EXCLUDED.id" +
" RETURNING id"
const selectAccountDataInRangeSQL = "" +
"SELECT room_id, type FROM syncapi_account_data_type" +
" WHERE user_id = $1 AND id > $2 AND id <= $3" +
" AND ( $4::text[] IS NULL OR type LIKE ANY($4) )" +
" AND ( $5::text[] IS NULL OR NOT(type LIKE ANY($5)) )" +
" ORDER BY id ASC LIMIT $6"
const selectMaxAccountDataIDSQL = "" +
"SELECT MAX(id) FROM syncapi_account_data_type"
type accountDataStatements struct {
insertAccountDataStmt *sql.Stmt
selectAccountDataInRangeStmt *sql.Stmt
selectMaxAccountDataIDStmt *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.selectAccountDataInRangeStmt, err = db.Prepare(selectAccountDataInRangeSQL); err != nil {
return
}
if s.selectMaxAccountDataIDStmt, err = db.Prepare(selectMaxAccountDataIDSQL); err != nil {
return
}
return
}
func (s *accountDataStatements) insertAccountData(
ctx context.Context,
userID, roomID, dataType string,
) (pos types.StreamPosition, err error) {
err = s.insertAccountDataStmt.QueryRowContext(ctx, userID, roomID, dataType).Scan(&pos)
return
}
func (s *accountDataStatements) selectAccountDataInRange(
ctx context.Context,
userID string,
oldPos, newPos types.StreamPosition,
accountDataEventFilter *gomatrixserverlib.EventFilter,
) (data map[string][]string, err error) {
data = make(map[string][]string)
// If both positions are the same, it means that the data was saved after the
// latest room event. In that case, we need to decrement the old position as
// it would prevent the SQL request from returning anything.
if oldPos == newPos {
oldPos--
}
rows, err := s.selectAccountDataInRangeStmt.QueryContext(ctx, userID, oldPos, newPos,
pq.StringArray(filterConvertTypeWildcardToSQL(accountDataEventFilter.Types)),
pq.StringArray(filterConvertTypeWildcardToSQL(accountDataEventFilter.NotTypes)),
accountDataEventFilter.Limit,
)
if err != nil {
return
}
defer common.CloseAndLogIfError(ctx, rows, "selectAccountDataInRange: rows.close() failed")
for rows.Next() {
var dataType string
var roomID string
if err = rows.Scan(&roomID, &dataType); err != nil {
return
}
if len(data[roomID]) > 0 {
data[roomID] = append(data[roomID], dataType)
} else {
data[roomID] = []string{dataType}
}
}
return data, rows.Err()
}
func (s *accountDataStatements) selectMaxAccountDataID(
ctx context.Context, txn *sql.Tx,
) (id int64, err error) {
var nullableID sql.NullInt64
stmt := common.TxStmt(txn, s.selectMaxAccountDataIDStmt)
err = stmt.QueryRowContext(ctx).Scan(&nullableID)
if nullableID.Valid {
id = nullableID.Int64
}
return
}
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