package producers import ( "context" "encoding/json" "github.com/matrix-org/dendrite/internal/eventutil" "github.com/matrix-org/dendrite/setup/jetstream" "github.com/matrix-org/dendrite/userapi/storage" "github.com/matrix-org/gomatrixserverlib" "github.com/nats-io/nats.go" log "github.com/sirupsen/logrus" ) type JetStreamPublisher interface { PublishMsg(*nats.Msg, ...nats.PubOpt) (*nats.PubAck, error) } // SyncAPI produces messages for the Sync API server to consume. type SyncAPI struct { db storage.Database producer JetStreamPublisher clientDataTopic string notificationDataTopic string } func NewSyncAPI(db storage.Database, js JetStreamPublisher, clientDataTopic string, notificationDataTopic string) *SyncAPI { return &SyncAPI{ db: db, producer: js, clientDataTopic: clientDataTopic, notificationDataTopic: notificationDataTopic, } } // SendAccountData sends account data to the Sync API server. func (p *SyncAPI) SendAccountData(userID string, data eventutil.AccountData) error { m := &nats.Msg{ Subject: p.clientDataTopic, Header: nats.Header{}, } m.Header.Set(jetstream.UserID, userID) var err error m.Data, err = json.Marshal(data) if err != nil { return err } log.WithFields(log.Fields{ "user_id": userID, "room_id": data.RoomID, "data_type": data.Type, }).Tracef("Producing to topic '%s'", p.clientDataTopic) _, err = p.producer.PublishMsg(m) return err } // GetAndSendNotificationData reads the database and sends data about unread // notifications to the Sync API server. func (p *SyncAPI) GetAndSendNotificationData(ctx context.Context, userID, roomID string) error { localpart, _, err := gomatrixserverlib.SplitID('@', userID) if err != nil { return err } ntotal, nhighlight, err := p.db.GetRoomNotificationCounts(ctx, localpart, roomID) if err != nil { return err } return p.sendNotificationData(userID, &eventutil.NotificationData{ RoomID: roomID, UnreadHighlightCount: int(nhighlight), UnreadNotificationCount: int(ntotal), }) } // sendNotificationData sends data about unread notifications to the Sync API server. func (p *SyncAPI) sendNotificationData(userID string, data *eventutil.NotificationData) error { m := &nats.Msg{ Subject: p.notificationDataTopic, Header: nats.Header{}, } m.Header.Set(jetstream.UserID, userID) var err error m.Data, err = json.Marshal(data) if err != nil { return err } log.WithFields(log.Fields{ "user_id": userID, "room_id": data.RoomID, }).Tracef("Producing to topic '%s'", p.clientDataTopic) _, err = p.producer.PublishMsg(m) return err }