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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 sqlite3
import (
"context"
"database/sql"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/dendrite/roomserver/storage/shared"
"github.com/matrix-org/dendrite/roomserver/storage/tables"
"github.com/matrix-org/dendrite/roomserver/types"
"github.com/matrix-org/gomatrixserverlib"
_ "github.com/mattn/go-sqlite3"
)
// A Database is used to store room events and stream offsets.
type Database struct {
shared.Database
events tables.Events
eventJSON tables.EventJSON
eventTypes tables.EventTypes
eventStateKeys tables.EventStateKeys
rooms tables.Rooms
transactions tables.Transactions
prevEvents tables.PreviousEvents
invites tables.Invites
membership tables.Membership
db *sql.DB
}
// Open a sqlite database.
// nolint: gocyclo
func Open(dataSourceName string) (*Database, error) {
var d Database
cs, err := sqlutil.ParseFileURI(dataSourceName)
if err != nil {
return nil, err
}
if d.db, err = sqlutil.Open(sqlutil.SQLiteDriverName(), cs, nil); err != nil {
return nil, err
}
//d.db.Exec("PRAGMA journal_mode=WAL;")
//d.db.Exec("PRAGMA read_uncommitted = true;")
// FIXME: We are leaking connections somewhere. Setting this to 2 will eventually
// cause the roomserver to be unresponsive to new events because something will
// acquire the global mutex and never unlock it because it is waiting for a connection
// which it will never obtain.
d.db.SetMaxOpenConns(20)
d.eventStateKeys, err = NewSqliteEventStateKeysTable(d.db)
if err != nil {
return nil, err
}
d.eventTypes, err = NewSqliteEventTypesTable(d.db)
if err != nil {
return nil, err
}
d.eventJSON, err = NewSqliteEventJSONTable(d.db)
if err != nil {
return nil, err
}
d.events, err = NewSqliteEventsTable(d.db)
if err != nil {
return nil, err
}
d.rooms, err = NewSqliteRoomsTable(d.db)
if err != nil {
return nil, err
}
d.transactions, err = NewSqliteTransactionsTable(d.db)
if err != nil {
return nil, err
}
stateBlock, err := NewSqliteStateBlockTable(d.db)
if err != nil {
return nil, err
}
stateSnapshot, err := NewSqliteStateSnapshotTable(d.db)
if err != nil {
return nil, err
}
d.prevEvents, err = NewSqlitePrevEventsTable(d.db)
if err != nil {
return nil, err
}
roomAliases, err := NewSqliteRoomAliasesTable(d.db)
if err != nil {
return nil, err
}
d.invites, err = NewSqliteInvitesTable(d.db)
if err != nil {
return nil, err
}
d.membership, err = NewSqliteMembershipTable(d.db)
if err != nil {
return nil, err
}
d.Database = shared.Database{
DB: d.db,
EventsTable: d.events,
EventTypesTable: d.eventTypes,
EventStateKeysTable: d.eventStateKeys,
EventJSONTable: d.eventJSON,
RoomsTable: d.rooms,
TransactionsTable: d.transactions,
StateBlockTable: stateBlock,
StateSnapshotTable: stateSnapshot,
PrevEventsTable: d.prevEvents,
RoomAliasesTable: roomAliases,
InvitesTable: d.invites,
MembershipTable: d.membership,
}
return &d, nil
}
func (d *Database) GetLatestEventsForUpdate(
ctx context.Context, roomNID types.RoomNID,
) (types.RoomRecentEventsUpdater, error) {
// TODO: Do not use transactions. We should be holding open this transaction but we cannot have
// multiple write transactions on sqlite. The code will perform additional
// write transactions independent of this one which will consistently cause
// 'database is locked' errors. As sqlite doesn't support multi-process on the
// same DB anyway, and we only execute updates sequentially, the only worries
// are for rolling back when things go wrong. (atomicity)
return shared.NewRoomRecentEventsUpdater(&d.Database, ctx, roomNID, false)
}
func (d *Database) MembershipUpdater(
ctx context.Context, roomID, targetUserID string,
targetLocal bool, roomVersion gomatrixserverlib.RoomVersion,
) (updater types.MembershipUpdater, err error) {
// TODO: Do not use transactions. We should be holding open this transaction but we cannot have
// multiple write transactions on sqlite. The code will perform additional
// write transactions independent of this one which will consistently cause
// 'database is locked' errors. As sqlite doesn't support multi-process on the
// same DB anyway, and we only execute updates sequentially, the only worries
// are for rolling back when things go wrong. (atomicity)
return shared.NewMembershipUpdater(ctx, &d.Database, roomID, targetUserID, targetLocal, roomVersion, false)
}
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