Remove eduserver (#2306)

* Move receipt sending to own JetStream producer

* Move SendToDevice to producer

* Remove most parts of the EDU server

* Fix SendToDevice & copyrights

* Move structs, cleanup EDU Server traces

* Use HeadersOnly subscription

* Missing file

* Fix linter issues

* Move consumers to own files

* Rename durable consumer; Consumer cleanup

* Docs/config cleanup

1 files changed, 120 insertions, 4 deletions

diff --git a/clientapi/producers/syncapi.go b/clientapi/producers/syncapi.go
index 9ab90391..2dee04e3 100644
--- a/clientapi/producers/syncapi.go
+++ b/clientapi/producers/syncapi.go
@@ -15,24 +15,34 @@
 package producers
 
 import (
+	"context"
 	"encoding/json"
+	"strconv"
 
 	"github.com/matrix-org/dendrite/internal/eventutil"
 	"github.com/matrix-org/dendrite/setup/jetstream"
+	"github.com/matrix-org/dendrite/syncapi/types"
+	userapi "github.com/matrix-org/dendrite/userapi/api"
+	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/nats-io/nats.go"
 	log "github.com/sirupsen/logrus"
 )
 
 // SyncAPIProducer produces events for the sync API server to consume
 type SyncAPIProducer struct {
-	Topic     string
-	JetStream nats.JetStreamContext
+	TopicClientData        string
+	TopicReceiptEvent      string
+	TopicSendToDeviceEvent string
+	TopicTypingEvent       string
+	JetStream              nats.JetStreamContext
+	ServerName             gomatrixserverlib.ServerName
+	UserAPI                userapi.UserInternalAPI
 }
 
 // SendData sends account data to the sync API server
 func (p *SyncAPIProducer) SendData(userID string, roomID string, dataType string, readMarker *eventutil.ReadMarkerJSON) error {
 	m := &nats.Msg{
-		Subject: p.Topic,
+		Subject: p.TopicClientData,
 		Header:  nats.Header{},
 	}
 	m.Header.Set(jetstream.UserID, userID)
@@ -52,8 +62,114 @@ func (p *SyncAPIProducer) SendData(userID string, roomID string, dataType string
 		"user_id":   userID,
 		"room_id":   roomID,
 		"data_type": dataType,
-	}).Tracef("Producing to topic '%s'", p.Topic)
+	}).Tracef("Producing to topic '%s'", p.TopicClientData)
 
 	_, err = p.JetStream.PublishMsg(m)
 	return err
 }
+
+func (p *SyncAPIProducer) SendReceipt(
+	ctx context.Context,
+	userID, roomID, eventID, receiptType string, timestamp gomatrixserverlib.Timestamp,
+) error {
+	m := &nats.Msg{
+		Subject: p.TopicReceiptEvent,
+		Header:  nats.Header{},
+	}
+	m.Header.Set(jetstream.UserID, userID)
+	m.Header.Set(jetstream.RoomID, roomID)
+	m.Header.Set(jetstream.EventID, eventID)
+	m.Header.Set("type", receiptType)
+	m.Header.Set("timestamp", strconv.Itoa(int(timestamp)))
+
+	log.WithFields(log.Fields{}).Tracef("Producing to topic '%s'", p.TopicReceiptEvent)
+	_, err := p.JetStream.PublishMsg(m, nats.Context(ctx))
+	return err
+}
+
+func (p *SyncAPIProducer) SendToDevice(
+	ctx context.Context, sender, userID, deviceID, eventType string,
+	message interface{},
+) error {
+	devices := []string{}
+	_, domain, err := gomatrixserverlib.SplitID('@', userID)
+	if err != nil {
+		return err
+	}
+
+	// If the event is targeted locally then we want to expand the wildcard
+	// out into individual device IDs so that we can send them to each respective
+	// device. If the event isn't targeted locally then we can't expand the
+	// wildcard as we don't know about the remote devices, so instead we leave it
+	// as-is, so that the federation sender can send it on with the wildcard intact.
+	if domain == p.ServerName && deviceID == "*" {
+		var res userapi.QueryDevicesResponse
+		err = p.UserAPI.QueryDevices(context.TODO(), &userapi.QueryDevicesRequest{
+			UserID: userID,
+		}, &res)
+		if err != nil {
+			return err
+		}
+		for _, dev := range res.Devices {
+			devices = append(devices, dev.ID)
+		}
+	} else {
+		devices = append(devices, deviceID)
+	}
+
+	js, err := json.Marshal(message)
+	if err != nil {
+		return err
+	}
+
+	log.WithFields(log.Fields{
+		"user_id":     userID,
+		"num_devices": len(devices),
+		"type":        eventType,
+	}).Tracef("Producing to topic '%s'", p.TopicSendToDeviceEvent)
+	for _, device := range devices {
+		ote := &types.OutputSendToDeviceEvent{
+			UserID:   userID,
+			DeviceID: device,
+			SendToDeviceEvent: gomatrixserverlib.SendToDeviceEvent{
+				Sender:  sender,
+				Type:    eventType,
+				Content: js,
+			},
+		}
+
+		eventJSON, err := json.Marshal(ote)
+		if err != nil {
+			log.WithError(err).Error("sendToDevice failed json.Marshal")
+			return err
+		}
+		m := &nats.Msg{
+			Subject: p.TopicSendToDeviceEvent,
+			Data:    eventJSON,
+			Header:  nats.Header{},
+		}
+		m.Header.Set("sender", sender)
+		m.Header.Set(jetstream.UserID, userID)
+		if _, err = p.JetStream.PublishMsg(m, nats.Context(ctx)); err != nil {
+			log.WithError(err).Error("sendToDevice failed t.Producer.SendMessage")
+			return err
+		}
+	}
+	return nil
+}
+
+func (p *SyncAPIProducer) SendTyping(
+	ctx context.Context, userID, roomID string, typing bool, timeoutMS int64,
+) error {
+	m := &nats.Msg{
+		Subject: p.TopicTypingEvent,
+		Header:  nats.Header{},
+	}
+	m.Header.Set(jetstream.UserID, userID)
+	m.Header.Set(jetstream.RoomID, roomID)
+	m.Header.Set("typing", strconv.FormatBool(typing))
+	m.Header.Set("timeout_ms", strconv.Itoa(int(timeoutMS)))
+
+	_, err := p.JetStream.PublishMsg(m, nats.Context(ctx))
+	return err
+}