mirror of
https://github.com/hoernschen/dendrite.git
synced 2024-12-27 23:48:27 +00:00
92 lines
2.9 KiB
Go
92 lines
2.9 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/matrix-org/dendrite/internal"
|
|
"github.com/matrix-org/dendrite/internal/config"
|
|
"github.com/matrix-org/dendrite/roomserver/api"
|
|
"github.com/matrix-org/dendrite/userapi/storage/accounts"
|
|
"github.com/matrix-org/gomatrixserverlib"
|
|
|
|
"github.com/Shopify/sarama"
|
|
log "github.com/sirupsen/logrus"
|
|
)
|
|
|
|
// OutputRoomEventConsumer consumes events that originated in the room server.
|
|
type OutputRoomEventConsumer struct {
|
|
rsAPI api.RoomserverInternalAPI
|
|
rsConsumer *internal.ContinualConsumer
|
|
db accounts.Database
|
|
serverName string
|
|
}
|
|
|
|
// NewOutputRoomEventConsumer creates a new OutputRoomEventConsumer. Call Start() to begin consuming from room servers.
|
|
func NewOutputRoomEventConsumer(
|
|
cfg *config.Dendrite,
|
|
kafkaConsumer sarama.Consumer,
|
|
store accounts.Database,
|
|
rsAPI api.RoomserverInternalAPI,
|
|
) *OutputRoomEventConsumer {
|
|
|
|
consumer := internal.ContinualConsumer{
|
|
Topic: string(cfg.Kafka.Topics.OutputRoomEvent),
|
|
Consumer: kafkaConsumer,
|
|
PartitionStore: store,
|
|
}
|
|
s := &OutputRoomEventConsumer{
|
|
rsConsumer: &consumer,
|
|
db: store,
|
|
rsAPI: rsAPI,
|
|
serverName: string(cfg.Matrix.ServerName),
|
|
}
|
|
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
|
|
}
|
|
|
|
if output.Type != api.OutputTypeNewRoomEvent {
|
|
log.WithField("type", output.Type).Debug(
|
|
"roomserver output log: ignoring unknown output type",
|
|
)
|
|
return nil
|
|
}
|
|
|
|
return s.db.UpdateMemberships(
|
|
context.TODO(),
|
|
gomatrixserverlib.UnwrapEventHeaders(output.NewRoomEvent.AddsState()),
|
|
output.NewRoomEvent.RemovesStateEventIDs,
|
|
)
|
|
}
|