mirror of
https://github.com/matrix-org/dendrite.git
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112 lines
3.5 KiB
Go
112 lines
3.5 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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"encoding/json"
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"github.com/Shopify/sarama"
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"github.com/getsentry/sentry-go"
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"github.com/matrix-org/dendrite/internal"
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"github.com/matrix-org/dendrite/internal/eventutil"
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"github.com/matrix-org/dendrite/setup/config"
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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/storage"
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"github.com/matrix-org/dendrite/syncapi/types"
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log "github.com/sirupsen/logrus"
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)
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// OutputNotificationDataConsumer consumes events that originated in
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// the Push server.
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type OutputNotificationDataConsumer struct {
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consumer *internal.ContinualConsumer
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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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}
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// NewOutputNotificationDataConsumer creates a new consumer. Call
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// Start() to begin consuming.
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func NewOutputNotificationDataConsumer(
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process *process.ProcessContext,
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cfg *config.SyncAPI,
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kafkaConsumer sarama.Consumer,
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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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) *OutputNotificationDataConsumer {
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consumer := internal.ContinualConsumer{
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Process: process,
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ComponentName: "syncapi/pushserver",
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Topic: string(cfg.Matrix.Kafka.TopicFor(config.TopicOutputNotificationData)),
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Consumer: kafkaConsumer,
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PartitionStore: store,
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}
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s := &OutputNotificationDataConsumer{
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consumer: &consumer,
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db: store,
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notifier: notifier,
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stream: stream,
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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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// Start starts consumption.
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func (s *OutputNotificationDataConsumer) Start() error {
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return s.consumer.Start()
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}
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// onMessage is called when the Sync server receives a new event from
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// the push server. It is not safe for this function to be called from
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// multiple goroutines, or else the sync stream position may race and
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// be incorrectly calculated.
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func (s *OutputNotificationDataConsumer) onMessage(msg *sarama.ConsumerMessage) error {
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ctx := context.Background()
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userID := string(msg.Key)
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// Parse out the event JSON
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var data eventutil.NotificationData
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if err := json.Unmarshal(msg.Value, &data); err != nil {
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sentry.CaptureException(err)
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log.WithField("user_id", userID).WithError(err).Error("push server consumer: message parse failure")
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return nil
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}
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streamPos, err := s.db.UpsertRoomUnreadNotificationCounts(ctx, userID, data.RoomID, data.UnreadNotificationCount, data.UnreadHighlightCount)
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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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"user_id": userID,
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"room_id": data.RoomID,
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}).WithError(err).Panic("Could not save notification counts")
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}
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s.stream.Advance(streamPos)
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s.notifier.OnNewNotificationData(userID, types.StreamingToken{NotificationDataPosition: streamPos})
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log.WithFields(log.Fields{
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"user_id": userID,
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"room_id": data.RoomID,
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"streamPos": streamPos,
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}).Info("Received data from Push server")
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return nil
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}
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