97 lines
3.0 KiB
Go
97 lines
3.0 KiB
Go
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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/matrix-org/dendrite/common"
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"github.com/matrix-org/dendrite/common/config"
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"github.com/matrix-org/dendrite/federationsender/queue"
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"github.com/matrix-org/dendrite/federationsender/storage"
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"github.com/matrix-org/dendrite/typingserver/api"
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"github.com/matrix-org/gomatrixserverlib"
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log "github.com/sirupsen/logrus"
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"gopkg.in/Shopify/sarama.v1"
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)
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// OutputTypingEventConsumer consumes events that originate in typing server.
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type OutputTypingEventConsumer struct {
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consumer *common.ContinualConsumer
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db *storage.Database
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queues *queue.OutgoingQueues
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ServerName gomatrixserverlib.ServerName
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}
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// NewOutputTypingEventConsumer creates a new OutputTypingEventConsumer. Call Start() to begin consuming from typing servers.
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func NewOutputTypingEventConsumer(
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cfg *config.Dendrite,
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kafkaConsumer sarama.Consumer,
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queues *queue.OutgoingQueues,
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store *storage.Database,
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) *OutputTypingEventConsumer {
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consumer := common.ContinualConsumer{
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Topic: string(cfg.Kafka.Topics.OutputTypingEvent),
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Consumer: kafkaConsumer,
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PartitionStore: store,
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}
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c := &OutputTypingEventConsumer{
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consumer: &consumer,
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queues: queues,
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db: store,
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ServerName: cfg.Matrix.ServerName,
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}
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consumer.ProcessMessage = c.onMessage
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return c
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}
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// Start consuming from typing servers
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func (t *OutputTypingEventConsumer) Start() error {
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return t.consumer.Start()
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}
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// onMessage is called for OutputTypingEvent received from the typing servers.
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// Parses the msg, creates a matrix federation EDU and sends it to joined hosts.
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func (t *OutputTypingEventConsumer) onMessage(msg *sarama.ConsumerMessage) error {
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// Extract the typing event from msg.
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var ote api.OutputTypingEvent
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if err := json.Unmarshal(msg.Value, &ote); err != nil {
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// Skip this msg but continue processing messages.
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log.WithError(err).Errorf("typingserver output log: message parse failed")
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return nil
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}
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joined, err := t.db.GetJoinedHosts(context.TODO(), ote.Event.RoomID)
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if err != nil {
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return err
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}
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names := make([]gomatrixserverlib.ServerName, len(joined))
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for i := range joined {
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names[i] = joined[i].ServerName
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}
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edu := &gomatrixserverlib.EDU{Type: ote.Event.Type}
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if edu.Content, err = json.Marshal(map[string]interface{}{
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"room_id": ote.Event.RoomID,
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"user_id": ote.Event.UserID,
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"typing": ote.Event.Typing,
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}); err != nil {
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return err
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}
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return t.queues.SendEDU(edu, t.ServerName, names)
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}
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