mirror of
https://github.com/matrix-org/dendrite.git
synced 2024-11-30 02:01:56 -06:00
120 lines
3.7 KiB
Go
120 lines
3.7 KiB
Go
// Copyright 2021 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"
|
|
"fmt"
|
|
"strings"
|
|
|
|
"github.com/matrix-org/dendrite/internal/sqlutil"
|
|
"github.com/matrix-org/dendrite/syncapi/storage/tables"
|
|
"github.com/matrix-org/dendrite/syncapi/types"
|
|
"github.com/matrix-org/gomatrixserverlib"
|
|
)
|
|
|
|
// The memberships table is designed to track the last time that
|
|
// the user was a given state. This allows us to find out the
|
|
// most recent time that a user was invited to, joined or left
|
|
// a room, either by choice or otherwise. This is important for
|
|
// building history visibility.
|
|
|
|
const membershipsSchema = `
|
|
CREATE TABLE IF NOT EXISTS syncapi_memberships (
|
|
-- The 'room_id' key for the state event.
|
|
room_id TEXT NOT NULL,
|
|
-- The state event ID
|
|
user_id TEXT NOT NULL,
|
|
-- The status of the membership
|
|
membership TEXT NOT NULL,
|
|
-- The event ID that last changed the membership
|
|
event_id TEXT NOT NULL,
|
|
-- The stream position of the change
|
|
stream_pos BIGINT NOT NULL,
|
|
-- The topological position of the change in the room
|
|
topological_pos BIGINT NOT NULL,
|
|
-- Unique index
|
|
UNIQUE (room_id, user_id, membership)
|
|
);
|
|
`
|
|
|
|
const upsertMembershipSQL = "" +
|
|
"INSERT INTO syncapi_memberships (room_id, user_id, membership, event_id, stream_pos, topological_pos)" +
|
|
" VALUES ($1, $2, $3, $4, $5, $6)" +
|
|
" ON CONFLICT (room_id, user_id, membership)" +
|
|
" DO UPDATE SET event_id = $4, stream_pos = $5, topological_pos = $6"
|
|
|
|
const selectMembershipSQL = "" +
|
|
"SELECT event_id, stream_pos, topological_pos FROM syncapi_memberships" +
|
|
" WHERE room_id = $1 AND user_id = $2 AND membership IN ($3)" +
|
|
" ORDER BY stream_pos DESC" +
|
|
" LIMIT 1"
|
|
|
|
type membershipsStatements struct {
|
|
db *sql.DB
|
|
upsertMembershipStmt *sql.Stmt
|
|
}
|
|
|
|
func NewSqliteMembershipsTable(db *sql.DB) (tables.Memberships, error) {
|
|
s := &membershipsStatements{
|
|
db: db,
|
|
}
|
|
_, err := db.Exec(membershipsSchema)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if s.upsertMembershipStmt, err = db.Prepare(upsertMembershipSQL); err != nil {
|
|
return nil, err
|
|
}
|
|
return s, nil
|
|
}
|
|
|
|
func (s *membershipsStatements) UpsertMembership(
|
|
ctx context.Context, txn *sql.Tx, event *gomatrixserverlib.HeaderedEvent,
|
|
streamPos, topologicalPos types.StreamPosition,
|
|
) error {
|
|
membership, err := event.Membership()
|
|
if err != nil {
|
|
return fmt.Errorf("event.Membership: %w", err)
|
|
}
|
|
_, err = sqlutil.TxStmt(txn, s.upsertMembershipStmt).ExecContext(
|
|
ctx,
|
|
event.RoomID(),
|
|
*event.StateKey(),
|
|
membership,
|
|
event.EventID(),
|
|
streamPos,
|
|
topologicalPos,
|
|
)
|
|
return err
|
|
}
|
|
|
|
func (s *membershipsStatements) SelectMembership(
|
|
ctx context.Context, txn *sql.Tx, roomID, userID, memberships []string,
|
|
) (eventID string, streamPos, topologyPos types.StreamPosition, err error) {
|
|
params := []interface{}{roomID, userID}
|
|
for _, membership := range memberships {
|
|
params = append(params, membership)
|
|
}
|
|
orig := strings.Replace(selectMembershipSQL, "($3)", sqlutil.QueryVariadicOffset(len(memberships), 2), 1)
|
|
stmt, err := s.db.Prepare(orig)
|
|
if err != nil {
|
|
return "", 0, 0, err
|
|
}
|
|
err = sqlutil.TxStmt(txn, stmt).QueryRowContext(ctx, params...).Scan(&eventID, &streamPos, &topologyPos)
|
|
return
|
|
}
|