mirror of
https://github.com/matrix-org/dendrite.git
synced 2026-01-06 13:43:09 -06:00
234 lines
7.2 KiB
Go
234 lines
7.2 KiB
Go
// Copyright 2017 Vector Creations Ltd
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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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"database/sql"
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"encoding/json"
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"fmt"
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"strings"
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"time"
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"github.com/getsentry/sentry-go"
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"github.com/matrix-org/dendrite/internal/eventutil"
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"github.com/matrix-org/dendrite/internal/fulltext"
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"github.com/matrix-org/dendrite/setup/config"
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"github.com/matrix-org/dendrite/setup/jetstream"
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"github.com/matrix-org/dendrite/setup/process"
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"github.com/matrix-org/dendrite/syncapi/notifier"
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"github.com/matrix-org/dendrite/syncapi/producers"
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"github.com/matrix-org/dendrite/syncapi/storage"
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"github.com/matrix-org/dendrite/syncapi/types"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/nats-io/nats.go"
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"github.com/sirupsen/logrus"
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log "github.com/sirupsen/logrus"
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"github.com/tidwall/gjson"
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)
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// OutputClientDataConsumer consumes events that originated in the client API server.
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type OutputClientDataConsumer struct {
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ctx context.Context
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jetstream nats.JetStreamContext
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nats *nats.Conn
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durable string
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topic string
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topicReIndex string
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db storage.Database
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stream types.StreamProvider
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notifier *notifier.Notifier
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serverName gomatrixserverlib.ServerName
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producer *producers.UserAPIReadProducer
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fts *fulltext.Search
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}
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// NewOutputClientDataConsumer creates a new OutputClientData consumer. Call Start() to begin consuming from room servers.
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func NewOutputClientDataConsumer(
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process *process.ProcessContext,
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cfg *config.SyncAPI,
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js nats.JetStreamContext,
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nats *nats.Conn,
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store storage.Database,
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notifier *notifier.Notifier,
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stream types.StreamProvider,
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producer *producers.UserAPIReadProducer,
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fts *fulltext.Search,
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) *OutputClientDataConsumer {
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return &OutputClientDataConsumer{
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ctx: process.Context(),
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jetstream: js,
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topic: cfg.Matrix.JetStream.Prefixed(jetstream.OutputClientData),
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topicReIndex: cfg.Matrix.JetStream.Prefixed(jetstream.InputFulltextReindex),
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durable: cfg.Matrix.JetStream.Durable("SyncAPIAccountDataConsumer"),
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nats: nats,
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db: store,
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notifier: notifier,
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stream: stream,
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serverName: cfg.Matrix.ServerName,
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producer: producer,
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fts: fts,
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}
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}
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// Start consuming from room servers
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func (s *OutputClientDataConsumer) Start() error {
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_, err := s.nats.Subscribe(s.topicReIndex, func(msg *nats.Msg) {
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if err := msg.Ack(); err != nil {
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return
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}
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ctx := context.Background()
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logrus.Debugf("Starting to index events")
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var offset int
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start := time.Now()
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count := 0
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for {
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evs, err := s.db.ReIndex(ctx, 1000, int64(offset))
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if err != nil {
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logrus.WithError(err).Errorf("unable to get events to index")
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return
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}
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if len(evs) == 0 {
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break
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}
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logrus.Debugf("Indexing %d events", len(evs))
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elements := make([]fulltext.IndexElement, 0, len(evs))
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for _, ev := range evs {
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e := fulltext.IndexElement{
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EventID: ev.EventID(),
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RoomID: ev.RoomID(),
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}
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switch ev.Type() {
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case "m.room.message":
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e.Content = gjson.GetBytes(ev.Content(), "body").String()
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case gomatrixserverlib.MRoomName:
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e.Content = gjson.GetBytes(ev.Content(), "name").String()
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case gomatrixserverlib.MRoomTopic:
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e.Content = gjson.GetBytes(ev.Content(), "topic").String()
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default:
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continue
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}
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if strings.TrimSpace(e.Content) == "" {
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continue
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}
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elements = append(elements, e)
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}
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if err = s.fts.BatchIndex(elements); err != nil {
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logrus.WithError(err).Error("unable to index events")
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continue
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}
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offset += len(evs)
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count += len(elements)
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}
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logrus.Debugf("Indexed %d events in %v", count, time.Since(start))
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})
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if err != nil {
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return err
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}
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return jetstream.JetStreamConsumer(
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s.ctx, s.jetstream, s.topic, s.durable, s.onMessage,
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nats.DeliverAll(), nats.ManualAck(),
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)
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}
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// onMessage is called when the sync server receives a new event from the client API server output log.
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// It is not safe for this function to be called from multiple goroutines, or else the
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// sync stream position may race and be incorrectly calculated.
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func (s *OutputClientDataConsumer) onMessage(ctx context.Context, msg *nats.Msg) bool {
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// Parse out the event JSON
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userID := msg.Header.Get(jetstream.UserID)
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var output eventutil.AccountData
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if err := json.Unmarshal(msg.Data, &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("client API server output log: message parse failure")
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sentry.CaptureException(err)
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return true
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}
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log.WithFields(log.Fields{
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"type": output.Type,
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"room_id": output.RoomID,
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}).Debug("Received data from client API server")
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streamPos, err := s.db.UpsertAccountData(
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s.ctx, userID, output.RoomID, output.Type,
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)
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if err != nil {
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sentry.CaptureException(err)
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log.WithFields(log.Fields{
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"type": output.Type,
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"room_id": output.RoomID,
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log.ErrorKey: err,
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}).Panicf("could not save account data")
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}
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if err = s.sendReadUpdate(ctx, userID, output); err != nil {
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log.WithError(err).WithFields(logrus.Fields{
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"user_id": userID,
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"room_id": output.RoomID,
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}).Errorf("Failed to generate read update")
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sentry.CaptureException(err)
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return false
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}
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if output.IgnoredUsers != nil {
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if err := s.db.UpdateIgnoresForUser(ctx, userID, output.IgnoredUsers); err != nil {
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log.WithError(err).WithFields(logrus.Fields{
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"user_id": userID,
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}).Errorf("Failed to update ignored users")
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sentry.CaptureException(err)
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}
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}
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s.stream.Advance(streamPos)
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s.notifier.OnNewAccountData(userID, types.StreamingToken{AccountDataPosition: streamPos})
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return true
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}
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func (s *OutputClientDataConsumer) sendReadUpdate(ctx context.Context, userID string, output eventutil.AccountData) error {
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if output.Type != "m.fully_read" || output.ReadMarker == nil {
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return nil
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}
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_, serverName, err := gomatrixserverlib.SplitID('@', userID)
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if err != nil {
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return fmt.Errorf("gomatrixserverlib.SplitID: %w", err)
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}
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if serverName != s.serverName {
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return nil
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}
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var readPos types.StreamPosition
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var fullyReadPos types.StreamPosition
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if output.ReadMarker.Read != "" {
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if _, readPos, err = s.db.PositionInTopology(ctx, output.ReadMarker.Read); err != nil && err != sql.ErrNoRows {
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return fmt.Errorf("s.db.PositionInTopology (Read): %w", err)
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}
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}
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if output.ReadMarker.FullyRead != "" {
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if _, fullyReadPos, err = s.db.PositionInTopology(ctx, output.ReadMarker.FullyRead); err != nil && err != sql.ErrNoRows {
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return fmt.Errorf("s.db.PositionInTopology (FullyRead): %w", err)
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}
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}
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if readPos > 0 || fullyReadPos > 0 {
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if err := s.producer.SendReadUpdate(userID, output.RoomID, readPos, fullyReadPos); err != nil {
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return fmt.Errorf("s.producer.SendReadUpdate: %w", err)
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}
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}
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return nil
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}
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