dendrite/syncapi/consumers/keychange.go
Neil Alexander b5a8935042
Sync refactor — Part 1 (#1688)
* It's half-alive

* Wakeups largely working

* Other tweaks, typing works

* Fix bugs, add receipt stream

* Delete notifier, other tweaks

* Dedupe a bit, add a template for the invite stream

* Clean up, add templates for other streams

* Don't leak channels

* Bring forward some more PDU logic, clean up other places

* Add some more wakeups

* Use addRoomDeltaToResponse

* Log tweaks, typing fixed?

* Fix timed out syncs

* Don't reset next batch position on timeout

* Add account data stream/position

* End of day

* Fix complete sync for receipt, typing

* Streams package

* Clean up a bit

* Complete sync send-to-device

* Don't drop errors

* More lightweight notifications

* Fix typing positions

* Don't advance position on remove again unless needed

* Device list updates

* Advance account data position

* Use limit for incremental sync

* Limit fixes, amongst other things

* Remove some fmt.Println

* Tweaks

* Re-add notifier

* Fix invite position

* Fixes

* Notify account data without advancing PDU position in notifier

* Apply account data position

* Get initial position for account data

* Fix position update

* Fix complete sync positions

* Review comments @Kegsay

* Room consumer parameters
2021-01-08 16:59:06 +00:00

132 lines
4.2 KiB
Go

// Copyright 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 consumers
import (
"context"
"encoding/json"
"sync"
"github.com/Shopify/sarama"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/keyserver/api"
roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/dendrite/syncapi/notifier"
"github.com/matrix-org/dendrite/syncapi/storage"
"github.com/matrix-org/dendrite/syncapi/types"
"github.com/matrix-org/gomatrixserverlib"
log "github.com/sirupsen/logrus"
)
// OutputKeyChangeEventConsumer consumes events that originated in the key server.
type OutputKeyChangeEventConsumer struct {
keyChangeConsumer *internal.ContinualConsumer
db storage.Database
notifier *notifier.Notifier
stream types.PartitionedStreamProvider
serverName gomatrixserverlib.ServerName // our server name
rsAPI roomserverAPI.RoomserverInternalAPI
keyAPI api.KeyInternalAPI
partitionToOffset map[int32]int64
partitionToOffsetMu sync.Mutex
}
// NewOutputKeyChangeEventConsumer creates a new OutputKeyChangeEventConsumer.
// Call Start() to begin consuming from the key server.
func NewOutputKeyChangeEventConsumer(
serverName gomatrixserverlib.ServerName,
topic string,
kafkaConsumer sarama.Consumer,
keyAPI api.KeyInternalAPI,
rsAPI roomserverAPI.RoomserverInternalAPI,
store storage.Database,
notifier *notifier.Notifier,
stream types.PartitionedStreamProvider,
) *OutputKeyChangeEventConsumer {
consumer := internal.ContinualConsumer{
ComponentName: "syncapi/keychange",
Topic: topic,
Consumer: kafkaConsumer,
PartitionStore: store,
}
s := &OutputKeyChangeEventConsumer{
keyChangeConsumer: &consumer,
db: store,
serverName: serverName,
keyAPI: keyAPI,
rsAPI: rsAPI,
partitionToOffset: make(map[int32]int64),
partitionToOffsetMu: sync.Mutex{},
notifier: notifier,
stream: stream,
}
consumer.ProcessMessage = s.onMessage
return s
}
// Start consuming from the key server
func (s *OutputKeyChangeEventConsumer) Start() error {
offsets, err := s.keyChangeConsumer.StartOffsets()
s.partitionToOffsetMu.Lock()
for _, o := range offsets {
s.partitionToOffset[o.Partition] = o.Offset
}
s.partitionToOffsetMu.Unlock()
return err
}
func (s *OutputKeyChangeEventConsumer) updateOffset(msg *sarama.ConsumerMessage) {
s.partitionToOffsetMu.Lock()
defer s.partitionToOffsetMu.Unlock()
s.partitionToOffset[msg.Partition] = msg.Offset
}
func (s *OutputKeyChangeEventConsumer) onMessage(msg *sarama.ConsumerMessage) error {
defer s.updateOffset(msg)
var output api.DeviceMessage
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).Error("syncapi: failed to unmarshal key change event from key server")
return err
}
// work out who we need to notify about the new key
var queryRes roomserverAPI.QuerySharedUsersResponse
err := s.rsAPI.QuerySharedUsers(context.Background(), &roomserverAPI.QuerySharedUsersRequest{
UserID: output.UserID,
}, &queryRes)
if err != nil {
log.WithError(err).Error("syncapi: failed to QuerySharedUsers for key change event from key server")
return err
}
// make sure we get our own key updates too!
queryRes.UserIDsToCount[output.UserID] = 1
posUpdate := types.LogPosition{
Offset: msg.Offset,
Partition: msg.Partition,
}
s.stream.Advance(posUpdate)
for userID := range queryRes.UserIDsToCount {
s.notifier.OnNewKeyChange(types.StreamingToken{DeviceListPosition: posUpdate}, userID, output.UserID)
}
return nil
}