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Roomserver per-room input parallelisation (Postgres) (#1289)

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* Per-room input mutex

* GetMembership should use transaction when assigning state key NID

* Actually use writer transactions rather than ignoring them

* Limit per-room mutexes to Postgres

* Flip the check in InputRoomEvents
This commit is contained in:
Neil Alexander 2020-08-20 16:24:33 +01:00 committed by GitHub
parent 0fea056db4
commit 068a3d3c9f
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GPG key ID: 4AEE18F83AFDEB23
12 changed files with 68 additions and 36 deletions
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4
roomserver/internal/api.go
View file

@ -20,7 +20,7 @@ type RoomserverInternalAPI struct {
ServerName gomatrixserverlib.ServerName
KeyRing gomatrixserverlib.JSONVerifier
FedClient *gomatrixserverlib.FederationClient
OutputRoomEventTopic string // Kafka topic for new output room events
mutex sync.Mutex // Protects calls to processRoomEvent
OutputRoomEventTopic string // Kafka topic for new output room events
mutexes sync.Map // room ID -> *sync.Mutex, protects calls to processRoomEvent
fsAPI fsAPI.FederationSenderInternalAPI
}

14
roomserver/internal/input.go
View file

@ -18,6 +18,7 @@ package internal
import (
"context"
"encoding/json"
"sync"
"github.com/Shopify/sarama"
"github.com/matrix-org/dendrite/roomserver/api"
@ -71,13 +72,18 @@ func (r *RoomserverInternalAPI) InputRoomEvents(
request *api.InputRoomEventsRequest,
response *api.InputRoomEventsResponse,
) (err error) {
// We lock as processRoomEvent can only be called once at a time
r.mutex.Lock()
defer r.mutex.Unlock()
for i := range request.InputRoomEvents {
for i, e := range request.InputRoomEvents {
roomID := "global"
if r.DB.SupportsConcurrentRoomInputs() {
roomID = e.Event.RoomID()
}
mutex, _ := r.mutexes.LoadOrStore(roomID, &sync.Mutex{})
mutex.(*sync.Mutex).Lock()
if response.EventID, err = r.processRoomEvent(ctx, request.InputRoomEvents[i]); err != nil {
mutex.(*sync.Mutex).Unlock()
return err
}
mutex.(*sync.Mutex).Unlock()
}
return nil
}

2
roomserver/storage/interface.go
View file

@ -24,6 +24,8 @@ import (
)
type Database interface {
// Do we support processing input events for more than one room at a time?
SupportsConcurrentRoomInputs() bool
// Store the room state at an event in the database
AddState(
ctx context.Context,

5
roomserver/storage/postgres/events_table.go
View file

@ -276,9 +276,10 @@ func (s *eventStatements) BulkSelectStateAtEventByID(
}
func (s *eventStatements) UpdateEventState(
ctx context.Context, eventNID types.EventNID, stateNID types.StateSnapshotNID,
ctx context.Context, txn *sql.Tx, eventNID types.EventNID, stateNID types.StateSnapshotNID,
) error {
_, err := s.updateEventStateStmt.ExecContext(ctx, int64(eventNID), int64(stateNID))
stmt := sqlutil.TxStmt(txn, s.updateEventStateStmt)
_, err := stmt.ExecContext(ctx, int64(eventNID), int64(stateNID))
return err
}

6
roomserver/storage/postgres/published_table.go
View file

@ -19,6 +19,7 @@ import (
"database/sql"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/dendrite/roomserver/storage/shared"
"github.com/matrix-org/dendrite/roomserver/storage/tables"
)
@ -63,9 +64,10 @@ func NewPostgresPublishedTable(db *sql.DB) (tables.Published, error) {
}
func (s *publishedStatements) UpsertRoomPublished(
ctx context.Context, roomID string, published bool,
ctx context.Context, txn *sql.Tx, roomID string, published bool,
) (err error) {
_, err = s.upsertPublishedStmt.ExecContext(ctx, roomID, published)
stmt := sqlutil.TxStmt(txn, s.upsertPublishedStmt)
_, err = stmt.ExecContext(ctx, roomID, published)
return
}

11
roomserver/storage/postgres/room_aliases_table.go
View file

@ -20,6 +20,7 @@ import (
"database/sql"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/dendrite/roomserver/storage/shared"
"github.com/matrix-org/dendrite/roomserver/storage/tables"
)
@ -77,9 +78,10 @@ func NewPostgresRoomAliasesTable(db *sql.DB) (tables.RoomAliases, error) {
}
func (s *roomAliasesStatements) InsertRoomAlias(
ctx context.Context, alias string, roomID string, creatorUserID string,
ctx context.Context, txn *sql.Tx, alias string, roomID string, creatorUserID string,
) (err error) {
_, err = s.insertRoomAliasStmt.ExecContext(ctx, alias, roomID, creatorUserID)
stmt := sqlutil.TxStmt(txn, s.insertRoomAliasStmt)
_, err = stmt.ExecContext(ctx, alias, roomID, creatorUserID)
return
}
@ -125,8 +127,9 @@ func (s *roomAliasesStatements) SelectCreatorIDFromAlias(
}
func (s *roomAliasesStatements) DeleteRoomAlias(
ctx context.Context, alias string,
ctx context.Context, txn *sql.Tx, alias string,
) (err error) {
_, err = s.deleteRoomAliasStmt.ExecContext(ctx, alias)
stmt := sqlutil.TxStmt(txn, s.deleteRoomAliasStmt)
_, err = stmt.ExecContext(ctx, alias)
return
}

24
roomserver/storage/shared/storage.go
View file

@ -44,6 +44,10 @@ type Database struct {
RedactionsTable tables.Redactions
}
func (d *Database) SupportsConcurrentRoomInputs() bool {
return true
}
func (d *Database) EventTypeNIDs(
ctx context.Context, eventTypes []string,
) (map[string]types.EventTypeNID, error) {
@ -114,8 +118,8 @@ func (d *Database) EventNIDs(
func (d *Database) SetState(
ctx context.Context, eventNID types.EventNID, stateNID types.StateSnapshotNID,
) error {
return d.Writer.Do(d.DB, nil, func(_ *sql.Tx) error {
return d.EventsTable.UpdateEventState(ctx, eventNID, stateNID)
return d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
return d.EventsTable.UpdateEventState(ctx, txn, eventNID, stateNID)
})
}
@ -224,8 +228,8 @@ func (d *Database) GetRoomVersionForRoomNID(
}
func (d *Database) SetRoomAlias(ctx context.Context, alias string, roomID string, creatorUserID string) error {
return d.Writer.Do(d.DB, nil, func(_ *sql.Tx) error {
return d.RoomAliasesTable.InsertRoomAlias(ctx, alias, roomID, creatorUserID)
return d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
return d.RoomAliasesTable.InsertRoomAlias(ctx, txn, alias, roomID, creatorUserID)
})
}
@ -244,8 +248,8 @@ func (d *Database) GetCreatorIDForAlias(
}
func (d *Database) RemoveRoomAlias(ctx context.Context, alias string) error {
return d.Writer.Do(d.DB, nil, func(_ *sql.Tx) error {
return d.RoomAliasesTable.DeleteRoomAlias(ctx, alias)
return d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
return d.RoomAliasesTable.DeleteRoomAlias(ctx, txn, alias)
})
}
@ -253,8 +257,8 @@ func (d *Database) GetMembership(
ctx context.Context, roomNID types.RoomNID, requestSenderUserID string,
) (membershipEventNID types.EventNID, stillInRoom bool, err error) {
var requestSenderUserNID types.EventStateKeyNID
err = d.Writer.Do(d.DB, nil, func(_ *sql.Tx) error {
requestSenderUserNID, err = d.assignStateKeyNID(ctx, nil, requestSenderUserID)
err = d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
requestSenderUserNID, err = d.assignStateKeyNID(ctx, txn, requestSenderUserID)
return err
})
if err != nil {
@ -471,8 +475,8 @@ func (d *Database) StoreEvent(
}
func (d *Database) PublishRoom(ctx context.Context, roomID string, publish bool) error {
return d.Writer.Do(d.DB, nil, func(_ *sql.Tx) error {
return d.PublishedTable.UpsertRoomPublished(ctx, roomID, publish)
return d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
return d.PublishedTable.UpsertRoomPublished(ctx, txn, roomID, publish)
})
}

5
roomserver/storage/sqlite3/events_table.go
View file

@ -279,9 +279,10 @@ func (s *eventStatements) BulkSelectStateAtEventByID(
}
func (s *eventStatements) UpdateEventState(
ctx context.Context, eventNID types.EventNID, stateNID types.StateSnapshotNID,
ctx context.Context, txn *sql.Tx, eventNID types.EventNID, stateNID types.StateSnapshotNID,
) error {
_, err := s.updateEventStateStmt.ExecContext(ctx, int64(stateNID), int64(eventNID))
stmt := sqlutil.TxStmt(txn, s.updateEventStateStmt)
_, err := stmt.ExecContext(ctx, int64(stateNID), int64(eventNID))
return err
}

6
roomserver/storage/sqlite3/published_table.go
View file

@ -19,6 +19,7 @@ import (
"database/sql"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/dendrite/roomserver/storage/shared"
"github.com/matrix-org/dendrite/roomserver/storage/tables"
)
@ -65,9 +66,10 @@ func NewSqlitePublishedTable(db *sql.DB) (tables.Published, error) {
}
func (s *publishedStatements) UpsertRoomPublished(
ctx context.Context, roomID string, published bool,
ctx context.Context, txn *sql.Tx, roomID string, published bool,
) error {
_, err := s.upsertPublishedStmt.ExecContext(ctx, roomID, published)
stmt := sqlutil.TxStmt(txn, s.upsertPublishedStmt)
_, err := stmt.ExecContext(ctx, roomID, published)
return err
}

11
roomserver/storage/sqlite3/room_aliases_table.go
View file

@ -20,6 +20,7 @@ import (
"database/sql"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/dendrite/roomserver/storage/shared"
"github.com/matrix-org/dendrite/roomserver/storage/tables"
)
@ -81,9 +82,10 @@ func NewSqliteRoomAliasesTable(db *sql.DB) (tables.RoomAliases, error) {
}
func (s *roomAliasesStatements) InsertRoomAlias(
ctx context.Context, alias string, roomID string, creatorUserID string,
ctx context.Context, txn *sql.Tx, alias string, roomID string, creatorUserID string,
) error {
_, err := s.insertRoomAliasStmt.ExecContext(ctx, alias, roomID, creatorUserID)
stmt := sqlutil.TxStmt(txn, s.insertRoomAliasStmt)
_, err := stmt.ExecContext(ctx, alias, roomID, creatorUserID)
return err
}
@ -131,8 +133,9 @@ func (s *roomAliasesStatements) SelectCreatorIDFromAlias(
}
func (s *roomAliasesStatements) DeleteRoomAlias(
ctx context.Context, alias string,
ctx context.Context, txn *sql.Tx, alias string,
) error {
_, err := s.deleteRoomAliasStmt.ExecContext(ctx, alias)
stmt := sqlutil.TxStmt(txn, s.deleteRoomAliasStmt)
_, err := stmt.ExecContext(ctx, alias)
return err
}

8
roomserver/storage/sqlite3/storage.go
View file

@ -139,6 +139,14 @@ func Open(dbProperties *config.DatabaseOptions) (*Database, error) {
return &d, nil
}
func (d *Database) SupportsConcurrentRoomInputs() bool {
// This isn't supported in SQLite mode yet because of issues with
// database locks.
// TODO: Look at this again - the problem is probably to do with
// the membership updaters and latest events updaters.
return false
}
func (d *Database) GetLatestEventsForUpdate(
ctx context.Context, roomNID types.RoomNID,
) (*shared.LatestEventsUpdater, error) {

8
roomserver/storage/tables/interface.go
View file

@ -42,7 +42,7 @@ type Events interface {
// If any of the requested events are missing from the database it returns a types.MissingEventError.
// If we do not have the state for any of the requested events it returns a types.MissingEventError.
BulkSelectStateAtEventByID(ctx context.Context, eventIDs []string) ([]types.StateAtEvent, error)
UpdateEventState(ctx context.Context, eventNID types.EventNID, stateNID types.StateSnapshotNID) error
UpdateEventState(ctx context.Context, txn *sql.Tx, eventNID types.EventNID, stateNID types.StateSnapshotNID) error
SelectEventSentToOutput(ctx context.Context, txn *sql.Tx, eventNID types.EventNID) (sentToOutput bool, err error)
UpdateEventSentToOutput(ctx context.Context, txn *sql.Tx, eventNID types.EventNID) error
SelectEventID(ctx context.Context, txn *sql.Tx, eventNID types.EventNID) (eventID string, err error)
@ -84,11 +84,11 @@ type StateBlock interface {
}
type RoomAliases interface {
InsertRoomAlias(ctx context.Context, alias string, roomID string, creatorUserID string) (err error)
InsertRoomAlias(ctx context.Context, txn *sql.Tx, alias string, roomID string, creatorUserID string) (err error)
SelectRoomIDFromAlias(ctx context.Context, alias string) (roomID string, err error)
SelectAliasesFromRoomID(ctx context.Context, roomID string) ([]string, error)
SelectCreatorIDFromAlias(ctx context.Context, alias string) (creatorID string, err error)
DeleteRoomAlias(ctx context.Context, alias string) (err error)
DeleteRoomAlias(ctx context.Context, txn *sql.Tx, alias string) (err error)
}
type PreviousEvents interface {
@ -123,7 +123,7 @@ type Membership interface {
}
type Published interface {
UpsertRoomPublished(ctx context.Context, roomID string, published bool) (err error)
UpsertRoomPublished(ctx context.Context, txn *sql.Tx, roomID string, published bool) (err error)
SelectPublishedFromRoomID(ctx context.Context, roomID string) (published bool, err error)
SelectAllPublishedRooms(ctx context.Context, published bool) ([]string, error)
}