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// Copyright 2022 The Matrix.org Foundation C.I.C.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package producers
import (
"encoding/json"
"github.com/nats-io/nats.go"
log "github.com/sirupsen/logrus"
"github.com/tidwall/gjson"
"github.com/matrix-org/dendrite/roomserver/acls"
"github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/dendrite/setup/jetstream"
)
var keyContentFields = map[string]string{
"m.room.join_rules": "join_rule",
"m.room.history_visibility": "history_visibility",
"m.room.member": "membership",
}
type RoomEventProducer struct {
Topic string
ACLs *acls.ServerACLs
JetStream nats.JetStreamContext
}
func (r *RoomEventProducer) ProduceRoomEvents(roomID string, updates []api.OutputEvent) error {
var err error
for _, update := range updates {
msg := nats.NewMsg(r.Topic)
msg.Header.Set(jetstream.RoomEventType, string(update.Type))
msg.Header.Set(jetstream.RoomID, roomID)
msg.Data, err = json.Marshal(update)
if err != nil {
return err
}
logger := log.WithFields(log.Fields{
"room_id": roomID,
"type": update.Type,
})
if update.NewRoomEvent != nil {
eventType := update.NewRoomEvent.Event.Type()
logger = logger.WithFields(log.Fields{
"event_type": eventType,
"event_id": update.NewRoomEvent.Event.EventID(),
"adds_state": len(update.NewRoomEvent.AddsStateEventIDs),
"removes_state": len(update.NewRoomEvent.RemovesStateEventIDs),
"send_as_server": update.NewRoomEvent.SendAsServer,
"sender": update.NewRoomEvent.Event.SenderID(),
})
if update.NewRoomEvent.Event.StateKey() != nil {
logger = logger.WithField("state_key", *update.NewRoomEvent.Event.StateKey())
}
contentKey := keyContentFields[eventType]
if contentKey != "" {
value := gjson.GetBytes(update.NewRoomEvent.Event.Content(), contentKey)
if value.Exists() {
logger = logger.WithField("content_value", value.String())
}
}
if eventType == acls.MRoomServerACL && update.NewRoomEvent.Event.StateKeyEquals("") {
ev := update.NewRoomEvent.Event.PDU
defer r.ACLs.OnServerACLUpdate(ev)
}
}
logger.Tracef("Producing to topic '%s'", r.Topic)
if _, err := r.JetStream.PublishMsg(msg); err != nil {
logger.WithError(err).Errorf("Failed to produce to topic '%s': %s", r.Topic, err)
return err
}
}
return nil
}
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