109 lines
3.4 KiB
Go
109 lines
3.4 KiB
Go
// Copyright 2019 Alex Chen
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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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"encoding/json"
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"github.com/Shopify/sarama"
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"github.com/matrix-org/dendrite/eduserver/api"
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"github.com/matrix-org/dendrite/eduserver/cache"
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"github.com/matrix-org/dendrite/internal"
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"github.com/matrix-org/dendrite/setup/config"
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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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// OutputTypingEventConsumer consumes events that originated in the EDU server.
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type OutputTypingEventConsumer struct {
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typingConsumer *internal.ContinualConsumer
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eduCache *cache.EDUCache
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stream types.StreamProvider
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notifier *notifier.Notifier
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}
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// NewOutputTypingEventConsumer creates a new OutputTypingEventConsumer.
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// Call Start() to begin consuming from the EDU server.
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func NewOutputTypingEventConsumer(
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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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eduCache *cache.EDUCache,
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notifier *notifier.Notifier,
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stream types.StreamProvider,
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) *OutputTypingEventConsumer {
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consumer := internal.ContinualConsumer{
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ComponentName: "syncapi/eduserver/typing",
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Topic: string(cfg.Matrix.Kafka.TopicFor(config.TopicOutputTypingEvent)),
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Consumer: kafkaConsumer,
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PartitionStore: store,
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}
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s := &OutputTypingEventConsumer{
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typingConsumer: &consumer,
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eduCache: eduCache,
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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 consuming from EDU api
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func (s *OutputTypingEventConsumer) Start() error {
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s.eduCache.SetTimeoutCallback(func(userID, roomID string, latestSyncPosition int64) {
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pos := types.StreamPosition(latestSyncPosition)
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s.notifier.OnNewTyping(roomID, types.StreamingToken{TypingPosition: pos})
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})
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return s.typingConsumer.Start()
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}
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func (s *OutputTypingEventConsumer) onMessage(msg *sarama.ConsumerMessage) error {
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var output api.OutputTypingEvent
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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("EDU server output log: message parse failure")
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return nil
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}
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log.WithFields(log.Fields{
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"room_id": output.Event.RoomID,
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"user_id": output.Event.UserID,
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"typing": output.Event.Typing,
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}).Debug("received data from EDU server")
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var typingPos types.StreamPosition
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typingEvent := output.Event
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if typingEvent.Typing {
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typingPos = types.StreamPosition(
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s.eduCache.AddTypingUser(typingEvent.UserID, typingEvent.RoomID, output.ExpireTime),
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)
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} else {
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typingPos = types.StreamPosition(
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s.eduCache.RemoveUser(typingEvent.UserID, typingEvent.RoomID),
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)
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}
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s.stream.Advance(typingPos)
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s.notifier.OnNewTyping(output.Event.RoomID, types.StreamingToken{TypingPosition: typingPos})
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return nil
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}
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