mirror of
https://github.com/matrix-org/dendrite
synced 2024-12-13 06:43:09 +01:00
ca5bbffd8d
* Add a new component: currentstateserver - Add a skeleton for it, with databases and a single query method. - Add integration tests for it. - Add listen/address fields in the config (breaking as this will force people to specify this to validate) Not currently hooked up to anything yet. * Unbreak config tests * Add current_state to sample config * comments
140 lines
3.7 KiB
Go
140 lines
3.7 KiB
Go
// Copyright 2020 The Matrix.org Foundation C.I.C.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package consumers
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import (
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"context"
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"encoding/json"
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"github.com/Shopify/sarama"
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"github.com/matrix-org/dendrite/currentstateserver/storage"
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"github.com/matrix-org/dendrite/internal"
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"github.com/matrix-org/dendrite/roomserver/api"
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"github.com/matrix-org/dendrite/syncapi/types"
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"github.com/matrix-org/gomatrixserverlib"
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log "github.com/sirupsen/logrus"
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)
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type OutputRoomEventConsumer struct {
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rsConsumer *internal.ContinualConsumer
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db storage.Database
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}
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func NewOutputRoomEventConsumer(topicName string, kafkaConsumer sarama.Consumer, store storage.Database) *OutputRoomEventConsumer {
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consumer := &internal.ContinualConsumer{
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Topic: topicName,
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Consumer: kafkaConsumer,
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PartitionStore: store,
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}
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s := &OutputRoomEventConsumer{
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rsConsumer: consumer,
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db: store,
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}
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consumer.ProcessMessage = s.onMessage
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return s
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}
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func (c *OutputRoomEventConsumer) onMessage(msg *sarama.ConsumerMessage) error {
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// Parse out the event JSON
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var output api.OutputEvent
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if err := json.Unmarshal(msg.Value, &output); err != nil {
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// If the message was invalid, log it and move on to the next message in the stream
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log.WithError(err).Errorf("roomserver output log: message parse failure")
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return nil
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}
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switch output.Type {
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case api.OutputTypeNewRoomEvent:
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return c.onNewRoomEvent(context.TODO(), *output.NewRoomEvent)
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case api.OutputTypeNewInviteEvent:
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case api.OutputTypeRetireInviteEvent:
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default:
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log.WithField("type", output.Type).Debug(
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"roomserver output log: ignoring unknown output type",
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)
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}
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return nil
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}
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func (c *OutputRoomEventConsumer) onNewRoomEvent(
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ctx context.Context, msg api.OutputNewRoomEvent,
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) error {
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ev := msg.Event
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addsStateEvents := msg.AddsState()
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ev, err := c.updateStateEvent(ev)
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if err != nil {
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return err
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}
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for i := range addsStateEvents {
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addsStateEvents[i], err = c.updateStateEvent(addsStateEvents[i])
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if err != nil {
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return err
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}
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}
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err = c.db.StoreStateEvents(
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ctx,
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addsStateEvents,
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msg.RemovesStateEventIDs,
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)
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if err != nil {
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// panic rather than continue with an inconsistent database
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log.WithFields(log.Fields{
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"event": string(ev.JSON()),
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log.ErrorKey: err,
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"add": msg.AddsStateEventIDs,
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"del": msg.RemovesStateEventIDs,
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}).Panicf("roomserver output log: write event failure")
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}
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return nil
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}
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// Start consuming from room servers
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func (c *OutputRoomEventConsumer) Start() error {
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return c.rsConsumer.Start()
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}
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func (c *OutputRoomEventConsumer) updateStateEvent(event gomatrixserverlib.HeaderedEvent) (gomatrixserverlib.HeaderedEvent, error) {
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var stateKey string
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if event.StateKey() == nil {
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stateKey = ""
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} else {
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stateKey = *event.StateKey()
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}
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prevEvent, err := c.db.GetStateEvent(
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context.TODO(), event.RoomID(), event.Type(), stateKey,
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)
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if err != nil {
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return event, err
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}
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if prevEvent == nil {
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return event, nil
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}
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prev := types.PrevEventRef{
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PrevContent: prevEvent.Content(),
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ReplacesState: prevEvent.EventID(),
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PrevSender: prevEvent.Sender(),
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}
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event.Event, err = event.SetUnsigned(prev)
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return event, err
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}
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