mirror of
https://github.com/matrix-org/dendrite
synced 2024-11-14 13:51:20 +01:00
141 lines
4.1 KiB
Go
141 lines
4.1 KiB
Go
// Copyright 2017 Vector Creations Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package storage
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import (
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"context"
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"database/sql"
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"github.com/matrix-org/dendrite/common"
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"github.com/matrix-org/dendrite/syncapi/types"
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)
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const accountDataSchema = `
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-- This sequence is shared between all the tables generated from kafka logs.
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CREATE SEQUENCE IF NOT EXISTS syncapi_stream_id;
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-- Stores the types of account data that a user set has globally and in each room
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-- and the stream ID when that type was last updated.
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CREATE TABLE IF NOT EXISTS syncapi_account_data_type (
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-- An incrementing ID which denotes the position in the log that this event resides at.
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id BIGINT PRIMARY KEY DEFAULT nextval('syncapi_stream_id'),
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-- ID of the user the data belongs to
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user_id TEXT NOT NULL,
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-- ID of the room the data is related to (empty string if not related to a specific room)
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room_id TEXT NOT NULL,
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-- Type of the data
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type TEXT NOT NULL,
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-- We don't want two entries of the same type for the same user
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CONSTRAINT syncapi_account_data_unique UNIQUE (user_id, room_id, type)
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);
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CREATE UNIQUE INDEX IF NOT EXISTS syncapi_account_data_id_idx ON syncapi_account_data_type(id);
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`
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const insertAccountDataSQL = "" +
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"INSERT INTO syncapi_account_data_type (user_id, room_id, type) VALUES ($1, $2, $3)" +
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" ON CONFLICT ON CONSTRAINT syncapi_account_data_unique" +
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" DO UPDATE SET id = EXCLUDED.id" +
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" RETURNING id"
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const selectAccountDataInRangeSQL = "" +
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"SELECT room_id, type FROM syncapi_account_data_type" +
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" WHERE user_id = $1 AND id > $2 AND id <= $3" +
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" ORDER BY id ASC"
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const selectMaxAccountDataIDSQL = "" +
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"SELECT MAX(id) FROM syncapi_account_data_type"
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type accountDataStatements struct {
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insertAccountDataStmt *sql.Stmt
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selectAccountDataInRangeStmt *sql.Stmt
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selectMaxAccountDataIDStmt *sql.Stmt
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}
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func (s *accountDataStatements) prepare(db *sql.DB) (err error) {
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_, err = db.Exec(accountDataSchema)
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if err != nil {
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return
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}
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if s.insertAccountDataStmt, err = db.Prepare(insertAccountDataSQL); err != nil {
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return
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}
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if s.selectAccountDataInRangeStmt, err = db.Prepare(selectAccountDataInRangeSQL); err != nil {
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return
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}
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if s.selectMaxAccountDataIDStmt, err = db.Prepare(selectMaxAccountDataIDSQL); err != nil {
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return
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}
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return
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}
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func (s *accountDataStatements) insertAccountData(
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ctx context.Context,
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userID, roomID, dataType string,
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) (pos int64, err error) {
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err = s.insertAccountDataStmt.QueryRowContext(ctx, userID, roomID, dataType).Scan(&pos)
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return
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}
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func (s *accountDataStatements) selectAccountDataInRange(
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ctx context.Context,
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userID string,
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oldPos, newPos types.StreamPosition,
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) (data map[string][]string, err error) {
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data = make(map[string][]string)
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// If both positions are the same, it means that the data was saved after the
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// latest room event. In that case, we need to decrement the old position as
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// it would prevent the SQL request from returning anything.
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if oldPos == newPos {
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oldPos--
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}
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rows, err := s.selectAccountDataInRangeStmt.QueryContext(ctx, userID, oldPos, newPos)
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if err != nil {
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return
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}
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for rows.Next() {
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var dataType string
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var roomID string
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if err = rows.Scan(&roomID, &dataType); err != nil {
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return
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}
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if len(data[roomID]) > 0 {
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data[roomID] = append(data[roomID], dataType)
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} else {
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data[roomID] = []string{dataType}
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}
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}
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return
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}
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func (s *accountDataStatements) selectMaxAccountDataID(
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ctx context.Context, txn *sql.Tx,
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) (id int64, err error) {
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var nullableID sql.NullInt64
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stmt := common.TxStmt(txn, s.selectMaxAccountDataIDStmt)
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err = stmt.QueryRowContext(ctx).Scan(&nullableID)
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if nullableID.Valid {
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id = nullableID.Int64
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}
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return
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}
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