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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 implie
// See the License for the specific language governing permissions and
// limitations under the License.
package postgres
import (
"context"
"database/sql"
"errors"
"fmt"
// Import the postgres database driver.
_ "github.com/lib/pq"
"github.com/matrix-org/dendrite/internal/caching"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/dendrite/roomserver/storage/postgres/deltas"
"github.com/matrix-org/dendrite/roomserver/storage/shared"
"github.com/matrix-org/dendrite/setup/config"
)
// A Database is used to store room events and stream offsets.
type Database struct {
shared.Database
}
// Open a postgres database.
func Open(ctx context.Context, conMan *sqlutil.Connections, dbProperties *config.DatabaseOptions, cache caching.RoomServerCaches) (*Database, error) {
var d Database
var err error
db, writer, err := conMan.Connection(dbProperties)
if err != nil {
return nil, fmt.Errorf("sqlutil.Open: %w", err)
}
// Create the tables.
if err = d.create(db); err != nil {
return nil, err
}
// Special case, since this migration uses several tables, so it needs to
// be sure that all tables are created first.
if err = executeMigration(ctx, db); err != nil {
return nil, err
}
// Then prepare the statements. Now that the migrations have run, any columns referred
// to in the database code should now exist.
if err = d.prepare(db, writer, cache); err != nil {
return nil, err
}
return &d, nil
}
func executeMigration(ctx context.Context, db *sql.DB) error {
// TODO: Remove when we are sure we are not having goose artefacts in the db
// This forces an error, which indicates the migration is already applied, since the
// column event_nid was removed from the table
migrationName := "roomserver: state blocks refactor"
var cName string
err := db.QueryRowContext(ctx, "select column_name from information_schema.columns where table_name = 'roomserver_state_block' AND column_name = 'event_nid'").Scan(&cName)
if err != nil {
if errors.Is(err, sql.ErrNoRows) { // migration was already executed, as the column was removed
if err = sqlutil.InsertMigration(ctx, db, migrationName); err != nil {
return fmt.Errorf("unable to manually insert migration '%s': %w", migrationName, err)
}
return nil
}
return err
}
m := sqlutil.NewMigrator(db)
m.AddMigrations(sqlutil.Migration{
Version: migrationName,
Up: deltas.UpStateBlocksRefactor,
})
return m.Up(ctx)
}
func (d *Database) create(db *sql.DB) error {
if err := CreateEventStateKeysTable(db); err != nil {
return err
}
if err := CreateEventTypesTable(db); err != nil {
return err
}
if err := CreateEventJSONTable(db); err != nil {
return err
}
if err := CreateEventsTable(db); err != nil {
return err
}
if err := CreateRoomsTable(db); err != nil {
return err
}
if err := CreateStateBlockTable(db); err != nil {
return err
}
if err := CreateStateSnapshotTable(db); err != nil {
return err
}
if err := CreatePrevEventsTable(db); err != nil {
return err
}
if err := CreateRoomAliasesTable(db); err != nil {
return err
}
if err := CreateInvitesTable(db); err != nil {
return err
}
if err := CreateMembershipTable(db); err != nil {
return err
}
if err := CreatePublishedTable(db); err != nil {
return err
}
if err := CreateRedactionsTable(db); err != nil {
return err
}
if err := CreateUserRoomKeysTable(db); err != nil {
return err
}
return nil
}
func (d *Database) prepare(db *sql.DB, writer sqlutil.Writer, cache caching.RoomServerCaches) error {
eventStateKeys, err := PrepareEventStateKeysTable(db)
if err != nil {
return err
}
eventTypes, err := PrepareEventTypesTable(db)
if err != nil {
return err
}
eventJSON, err := PrepareEventJSONTable(db)
if err != nil {
return err
}
events, err := PrepareEventsTable(db)
if err != nil {
return err
}
rooms, err := PrepareRoomsTable(db)
if err != nil {
return err
}
stateBlock, err := PrepareStateBlockTable(db)
if err != nil {
return err
}
stateSnapshot, err := PrepareStateSnapshotTable(db)
if err != nil {
return err
}
prevEvents, err := PreparePrevEventsTable(db)
if err != nil {
return err
}
roomAliases, err := PrepareRoomAliasesTable(db)
if err != nil {
return err
}
invites, err := PrepareInvitesTable(db)
if err != nil {
return err
}
membership, err := PrepareMembershipTable(db)
if err != nil {
return err
}
published, err := PreparePublishedTable(db)
if err != nil {
return err
}
redactions, err := PrepareRedactionsTable(db)
if err != nil {
return err
}
purge, err := PreparePurgeStatements(db)
if err != nil {
return err
}
userRoomKeys, err := PrepareUserRoomKeysTable(db)
if err != nil {
return err
}
d.Database = shared.Database{
DB: db,
EventDatabase: shared.EventDatabase{
DB: db,
Cache: cache,
Writer: writer,
EventsTable: events,
EventJSONTable: eventJSON,
EventTypesTable: eventTypes,
EventStateKeysTable: eventStateKeys,
PrevEventsTable: prevEvents,
RedactionsTable: redactions,
},
Cache: cache,
Writer: writer,
RoomsTable: rooms,
StateBlockTable: stateBlock,
StateSnapshotTable: stateSnapshot,
RoomAliasesTable: roomAliases,
InvitesTable: invites,
MembershipTable: membership,
PublishedTable: published,
Purge: purge,
UserRoomKeyTable: userRoomKeys,
}
return nil
}
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