247 lines
7.3 KiB
Go
247 lines
7.3 KiB
Go
// Copyright 2017 Vector Creations Ltd
|
|
//
|
|
// 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 consumers
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
|
|
"github.com/Shopify/sarama"
|
|
"github.com/matrix-org/dendrite/internal"
|
|
"github.com/matrix-org/dendrite/internal/config"
|
|
"github.com/matrix-org/dendrite/roomserver/api"
|
|
"github.com/matrix-org/dendrite/syncapi/storage"
|
|
"github.com/matrix-org/dendrite/syncapi/sync"
|
|
"github.com/matrix-org/dendrite/syncapi/types"
|
|
"github.com/matrix-org/gomatrixserverlib"
|
|
log "github.com/sirupsen/logrus"
|
|
)
|
|
|
|
// OutputRoomEventConsumer consumes events that originated in the room server.
|
|
type OutputRoomEventConsumer struct {
|
|
rsAPI api.RoomserverInternalAPI
|
|
rsConsumer *internal.ContinualConsumer
|
|
db storage.Database
|
|
notifier *sync.Notifier
|
|
keyChanges *OutputKeyChangeEventConsumer
|
|
}
|
|
|
|
// NewOutputRoomEventConsumer creates a new OutputRoomEventConsumer. Call Start() to begin consuming from room servers.
|
|
func NewOutputRoomEventConsumer(
|
|
cfg *config.SyncAPI,
|
|
kafkaConsumer sarama.Consumer,
|
|
n *sync.Notifier,
|
|
store storage.Database,
|
|
rsAPI api.RoomserverInternalAPI,
|
|
keyChanges *OutputKeyChangeEventConsumer,
|
|
) *OutputRoomEventConsumer {
|
|
|
|
consumer := internal.ContinualConsumer{
|
|
Topic: string(cfg.Matrix.Kafka.TopicFor(config.TopicOutputRoomEvent)),
|
|
Consumer: kafkaConsumer,
|
|
PartitionStore: store,
|
|
}
|
|
s := &OutputRoomEventConsumer{
|
|
rsConsumer: &consumer,
|
|
db: store,
|
|
notifier: n,
|
|
rsAPI: rsAPI,
|
|
keyChanges: keyChanges,
|
|
}
|
|
consumer.ProcessMessage = s.onMessage
|
|
|
|
return s
|
|
}
|
|
|
|
// Start consuming from room servers
|
|
func (s *OutputRoomEventConsumer) Start() error {
|
|
return s.rsConsumer.Start()
|
|
}
|
|
|
|
// onMessage is called when the sync server receives a new event from the room server output log.
|
|
// It is not safe for this function to be called from multiple goroutines, or else the
|
|
// sync stream position may race and be incorrectly calculated.
|
|
func (s *OutputRoomEventConsumer) onMessage(msg *sarama.ConsumerMessage) error {
|
|
// Parse out the event JSON
|
|
var output api.OutputEvent
|
|
if err := json.Unmarshal(msg.Value, &output); err != nil {
|
|
// If the message was invalid, log it and move on to the next message in the stream
|
|
log.WithError(err).Errorf("roomserver output log: message parse failure")
|
|
return nil
|
|
}
|
|
|
|
switch output.Type {
|
|
case api.OutputTypeNewRoomEvent:
|
|
// Ignore redaction events. We will add them to the database when they are
|
|
// validated (when we receive OutputTypeRedactedEvent)
|
|
event := output.NewRoomEvent.Event
|
|
if event.Type() == gomatrixserverlib.MRoomRedaction && event.StateKey() == nil {
|
|
// in the special case where the event redacts itself, just pass the message through because
|
|
// we will never see the other part of the pair
|
|
if event.Redacts() != event.EventID() {
|
|
return nil
|
|
}
|
|
}
|
|
return s.onNewRoomEvent(context.TODO(), *output.NewRoomEvent)
|
|
case api.OutputTypeNewInviteEvent:
|
|
return s.onNewInviteEvent(context.TODO(), *output.NewInviteEvent)
|
|
case api.OutputTypeRetireInviteEvent:
|
|
return s.onRetireInviteEvent(context.TODO(), *output.RetireInviteEvent)
|
|
case api.OutputTypeRedactedEvent:
|
|
return s.onRedactEvent(context.TODO(), *output.RedactedEvent)
|
|
default:
|
|
log.WithField("type", output.Type).Debug(
|
|
"roomserver output log: ignoring unknown output type",
|
|
)
|
|
return nil
|
|
}
|
|
}
|
|
|
|
func (s *OutputRoomEventConsumer) onRedactEvent(
|
|
ctx context.Context, msg api.OutputRedactedEvent,
|
|
) error {
|
|
err := s.db.RedactEvent(ctx, msg.RedactedEventID, &msg.RedactedBecause)
|
|
if err != nil {
|
|
log.WithError(err).Error("RedactEvent error'd")
|
|
return err
|
|
}
|
|
// fake a room event so we notify clients about the redaction, as if it were
|
|
// a normal event.
|
|
return s.onNewRoomEvent(ctx, api.OutputNewRoomEvent{
|
|
Event: msg.RedactedBecause,
|
|
})
|
|
}
|
|
|
|
func (s *OutputRoomEventConsumer) onNewRoomEvent(
|
|
ctx context.Context, msg api.OutputNewRoomEvent,
|
|
) error {
|
|
ev := msg.Event
|
|
addsStateEvents := msg.AddsState()
|
|
|
|
ev, err := s.updateStateEvent(ev)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
for i := range addsStateEvents {
|
|
addsStateEvents[i], err = s.updateStateEvent(addsStateEvents[i])
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
pduPos, err := s.db.WriteEvent(
|
|
ctx,
|
|
&ev,
|
|
addsStateEvents,
|
|
msg.AddsStateEventIDs,
|
|
msg.RemovesStateEventIDs,
|
|
msg.TransactionID,
|
|
false,
|
|
)
|
|
if err != nil {
|
|
// panic rather than continue with an inconsistent database
|
|
log.WithFields(log.Fields{
|
|
"event": string(ev.JSON()),
|
|
log.ErrorKey: err,
|
|
"add": msg.AddsStateEventIDs,
|
|
"del": msg.RemovesStateEventIDs,
|
|
}).Panicf("roomserver output log: write event failure")
|
|
return nil
|
|
}
|
|
s.notifier.OnNewEvent(&ev, "", nil, types.NewStreamToken(pduPos, 0, nil))
|
|
|
|
s.notifyKeyChanges(&ev)
|
|
|
|
return nil
|
|
}
|
|
|
|
func (s *OutputRoomEventConsumer) notifyKeyChanges(ev *gomatrixserverlib.HeaderedEvent) {
|
|
membership, err := ev.Membership()
|
|
if err != nil {
|
|
return
|
|
}
|
|
switch membership {
|
|
case gomatrixserverlib.Join:
|
|
s.keyChanges.OnJoinEvent(ev)
|
|
case gomatrixserverlib.Ban:
|
|
fallthrough
|
|
case gomatrixserverlib.Leave:
|
|
s.keyChanges.OnLeaveEvent(ev)
|
|
}
|
|
}
|
|
|
|
func (s *OutputRoomEventConsumer) onNewInviteEvent(
|
|
ctx context.Context, msg api.OutputNewInviteEvent,
|
|
) error {
|
|
pduPos, err := s.db.AddInviteEvent(ctx, msg.Event)
|
|
if err != nil {
|
|
// panic rather than continue with an inconsistent database
|
|
log.WithFields(log.Fields{
|
|
"event": string(msg.Event.JSON()),
|
|
"pdupos": pduPos,
|
|
log.ErrorKey: err,
|
|
}).Panicf("roomserver output log: write invite failure")
|
|
return nil
|
|
}
|
|
s.notifier.OnNewEvent(&msg.Event, "", nil, types.NewStreamToken(pduPos, 0, nil))
|
|
return nil
|
|
}
|
|
|
|
func (s *OutputRoomEventConsumer) onRetireInviteEvent(
|
|
ctx context.Context, msg api.OutputRetireInviteEvent,
|
|
) error {
|
|
sp, err := s.db.RetireInviteEvent(ctx, msg.EventID)
|
|
if err != nil {
|
|
// panic rather than continue with an inconsistent database
|
|
log.WithFields(log.Fields{
|
|
"event_id": msg.EventID,
|
|
log.ErrorKey: err,
|
|
}).Panicf("roomserver output log: remove invite failure")
|
|
return nil
|
|
}
|
|
// Notify any active sync requests that the invite has been retired.
|
|
// Invites share the same stream counter as PDUs
|
|
s.notifier.OnNewEvent(nil, "", []string{msg.TargetUserID}, types.NewStreamToken(sp, 0, nil))
|
|
return nil
|
|
}
|
|
|
|
func (s *OutputRoomEventConsumer) updateStateEvent(event gomatrixserverlib.HeaderedEvent) (gomatrixserverlib.HeaderedEvent, error) {
|
|
if event.StateKey() == nil {
|
|
return event, nil
|
|
}
|
|
stateKey := *event.StateKey()
|
|
|
|
prevEvent, err := s.db.GetStateEvent(
|
|
context.TODO(), event.RoomID(), event.Type(), stateKey,
|
|
)
|
|
if err != nil {
|
|
return event, err
|
|
}
|
|
|
|
if prevEvent == nil {
|
|
return event, nil
|
|
}
|
|
|
|
prev := types.PrevEventRef{
|
|
PrevContent: prevEvent.Content(),
|
|
ReplacesState: prevEvent.EventID(),
|
|
PrevSender: prevEvent.Sender(),
|
|
}
|
|
|
|
event.Event, err = event.SetUnsigned(prev)
|
|
return event, err
|
|
}
|