Send-to-device support (#1072)

* Groundwork for send-to-device messaging

* Update sample config

* Add unstable routing for now

* Send to device consumer in sync API

* Start the send-to-device consumer

* fix indentation in dendrite-config.yaml

* Create send-to-device database tables, other tweaks

* Add some logic for send-to-device messages, add them into sync stream

* Handle incoming send-to-device messages, count them with EDU stream pos

* Undo changes to test

* pq.Array

* Fix sync

* Logging

* Fix a couple of transaction things, fix client API

* Add send-to-device test, hopefully fix bugs

* Comments

* Refactor a bit

* Fix schema

* Fix queries

* Debug logging

* Fix storing and retrieving of send-to-device messages

* Try to avoid database locks

* Update sync position

* Use latest sync position

* Jiggle about sync a bit

* Fix tests

* Break out the retrieval from the update/delete behaviour

* Comments

* nolint on getResponseWithPDUsForCompleteSync

* Try to line up sync tokens again

* Implement wildcard

* Add all send-to-device tests to whitelist, what could possibly go wrong?

* Only care about wildcard when targeted locally

* Deduplicate transactions

* Handle tokens properly, return immediately if waiting send-to-device messages

* Fix sync

* Update sytest-whitelist

* Fix copyright notice (need to do more of this)

* Comments, copyrights

* Return errors from Do, fix dendritejs

* Review comments

* Comments

* Constructor for TransactionWriter

* defletions

* Update gomatrixserverlib, sytest-blacklist

1 files changed, 26 insertions, 0 deletions

diff --git a/clientapi/producers/eduserver.go b/clientapi/producers/eduserver.go
index 30c40fb7..102c1fad 100644
--- a/clientapi/producers/eduserver.go
+++ b/clientapi/producers/eduserver.go
@@ -14,6 +14,7 @@ package producers
 
 import (
 	"context"
+	"encoding/json"
 	"time"
 
 	"github.com/matrix-org/dendrite/eduserver/api"
@@ -52,3 +53,28 @@ func (p *EDUServerProducer) SendTyping(
 
 	return err
 }
+
+// SendToDevice sends a typing event to EDU server
+func (p *EDUServerProducer) SendToDevice(
+	ctx context.Context, sender, userID, deviceID, eventType string,
+	message interface{},
+) error {
+	js, err := json.Marshal(message)
+	if err != nil {
+		return err
+	}
+	requestData := api.InputSendToDeviceEvent{
+		UserID:   userID,
+		DeviceID: deviceID,
+		SendToDeviceEvent: gomatrixserverlib.SendToDeviceEvent{
+			Sender:  sender,
+			Type:    eventType,
+			Content: js,
+		},
+	}
+	request := api.InputSendToDeviceEventRequest{
+		InputSendToDeviceEvent: requestData,
+	}
+	response := api.InputSendToDeviceEventResponse{}
+	return p.InputAPI.InputSendToDeviceEvent(ctx, &request, &response)
+}