Peeking updates (#1607)

* Add unpeek

* Don't allow peeks into encrypted rooms

* Fix send tests

* Update consumers

roomserver/api/api.go

@@ -42,6 +42,12 @@ type RoomserverInternalAPI interface {
 		res *PerformPeekResponse,
 	)
 
+	PerformUnpeek(
+		ctx context.Context,
+		req *PerformUnpeekRequest,
+		res *PerformUnpeekResponse,
+	)
+
 	PerformPublish(
 		ctx context.Context,
 		req *PerformPublishRequest,

roomserver/api/api_trace.go

@@ -46,6 +46,15 @@ func (t *RoomserverInternalAPITrace) PerformPeek(
 	util.GetLogger(ctx).Infof("PerformPeek req=%+v res=%+v", js(req), js(res))
 }
 
+func (t *RoomserverInternalAPITrace) PerformUnpeek(
+	ctx context.Context,
+	req *PerformUnpeekRequest,
+	res *PerformUnpeekResponse,
+) {
+	t.Impl.PerformUnpeek(ctx, req, res)
+	util.GetLogger(ctx).Infof("PerformUnpeek req=%+v res=%+v", js(req), js(res))
+}
+
 func (t *RoomserverInternalAPITrace) PerformJoin(
 	ctx context.Context,
 	req *PerformJoinRequest,

roomserver/api/output.go

@@ -51,6 +51,8 @@ const (
 
 	// OutputTypeNewPeek indicates that the kafka event is an OutputNewPeek
 	OutputTypeNewPeek OutputType = "new_peek"
+	// OutputTypeRetirePeek indicates that the kafka event is an OutputRetirePeek
+	OutputTypeRetirePeek OutputType = "retire_peek"
 )
 
 // An OutputEvent is an entry in the roomserver output kafka log.
@@ -70,6 +72,8 @@ type OutputEvent struct {
 	RedactedEvent *OutputRedactedEvent `json:"redacted_event,omitempty"`
 	// The content of event with type OutputTypeNewPeek
 	NewPeek *OutputNewPeek `json:"new_peek,omitempty"`
+	// The content of event with type OutputTypeRetirePeek
+	RetirePeek *OutputRetirePeek `json:"retire_peek,omitempty"`
 }
 
 // Type of the OutputNewRoomEvent.
@@ -240,3 +244,10 @@ type OutputNewPeek struct {
 	UserID   string
 	DeviceID string
 }
+
+// An OutputRetirePeek is written whenever a user stops peeking into a room.
+type OutputRetirePeek struct {
+	RoomID   string
+	UserID   string
+	DeviceID string
+}

roomserver/api/perform.go

@@ -123,6 +123,17 @@ type PerformPeekResponse struct {
 	Error *PerformError
 }
 
+type PerformUnpeekRequest struct {
+	RoomID   string `json:"room_id"`
+	UserID   string `json:"user_id"`
+	DeviceID string `json:"device_id"`
+}
+
+type PerformUnpeekResponse struct {
+	// If non-nil, the join request failed. Contains more information why it failed.
+	Error *PerformError
+}
+
 // PerformBackfillRequest is a request to PerformBackfill.
 type PerformBackfillRequest struct {
 	// The room to backfill