Loopback event from invite response (#982)

* Working invite v2 support

* Fix copyright notice

* Update gomatrixserverlib

* Add fallthrough

* Add missing continue

* Update sytest-whitelist, gomatrixserverlib

* Update gomatrixserverlib to test matrix-org/gomatrixserverlib#181

* Update gomatrixserverlib

clientapi/routing/membership.go

@@ -127,9 +127,8 @@ func SendMembership(
 		returnData = struct {
 			RoomID string `json:"room_id"`
 		}{roomID}
+		fallthrough
 	default:
-	}
-
 		_, err = producer.SendEvents(
 			req.Context(),
 			[]gomatrixserverlib.HeaderedEvent{event.Headered(verRes.RoomVersion)},
@@ -140,6 +139,7 @@ func SendMembership(
 			util.GetLogger(req.Context()).WithError(err).Error("producer.SendEvents failed")
 			return jsonerror.InternalServerError()
 		}
+	}
 
 	return util.JSONResponse{
 		Code: http.StatusOK,

cmd/dendrite-demo-libp2p/main.go

@@ -153,7 +153,7 @@ func main() {
 	asQuery := appservice.SetupAppServiceAPIComponent(
 		&base.Base, accountDB, deviceDB, federation, alias, query, transactions.New(),
 	)
-	fedSenderAPI := federationsender.SetupFederationSenderComponent(&base.Base, federation, query)
+	fedSenderAPI := federationsender.SetupFederationSenderComponent(&base.Base, federation, query, input)
 
 	clientapi.SetupClientAPIComponent(
 		&base.Base, deviceDB, accountDB,

cmd/dendrite-federation-sender-server/main.go

@@ -26,10 +26,10 @@ func main() {
 
 	federation := base.CreateFederationClient()
 
-	_, _, query := base.CreateHTTPRoomserverAPIs()
+	_, input, query := base.CreateHTTPRoomserverAPIs()
 
 	federationsender.SetupFederationSenderComponent(
-		base, federation, query,
+		base, federation, query, input,
 	)
 
 	base.SetupAndServeHTTP(string(base.Cfg.Bind.FederationSender), string(base.Cfg.Listen.FederationSender))

cmd/dendrite-monolith-server/main.go

@@ -62,7 +62,7 @@ func main() {
 	asQuery := appservice.SetupAppServiceAPIComponent(
 		base, accountDB, deviceDB, federation, alias, query, transactions.New(),
 	)
-	fedSenderAPI := federationsender.SetupFederationSenderComponent(base, federation, query)
+	fedSenderAPI := federationsender.SetupFederationSenderComponent(base, federation, query, input)
 
 	clientapi.SetupClientAPIComponent(
 		base, deviceDB, accountDB,

federationsender/federationsender.go

@@ -20,6 +20,7 @@ import (
 	"github.com/matrix-org/dendrite/common/basecomponent"
 	"github.com/matrix-org/dendrite/federationsender/api"
 	"github.com/matrix-org/dendrite/federationsender/consumers"
+	"github.com/matrix-org/dendrite/federationsender/producers"
 	"github.com/matrix-org/dendrite/federationsender/query"
 	"github.com/matrix-org/dendrite/federationsender/queue"
 	"github.com/matrix-org/dendrite/federationsender/storage"
@@ -34,13 +35,16 @@ func SetupFederationSenderComponent(
 	base *basecomponent.BaseDendrite,
 	federation *gomatrixserverlib.FederationClient,
 	rsQueryAPI roomserverAPI.RoomserverQueryAPI,
+	rsInputAPI roomserverAPI.RoomserverInputAPI,
 ) api.FederationSenderQueryAPI {
 	federationSenderDB, err := storage.NewDatabase(string(base.Cfg.Database.FederationSender))
 	if err != nil {
 		logrus.WithError(err).Panic("failed to connect to federation sender db")
 	}
 
-	queues := queue.NewOutgoingQueues(base.Cfg.Matrix.ServerName, federation)
+	roomserverProducer := producers.NewRoomserverProducer(rsInputAPI, base.Cfg.Matrix.ServerName)
+
+	queues := queue.NewOutgoingQueues(base.Cfg.Matrix.ServerName, federation, roomserverProducer)
 
 	rsConsumer := consumers.NewOutputRoomEventConsumer(
 		base.Cfg, base.KafkaConsumer, queues,

federationsender/producers/roomserver.go

@@ -0,0 +1,66 @@
+// Copyright 2020 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 (
+	"context"
+
+	"github.com/matrix-org/dendrite/roomserver/api"
+	"github.com/matrix-org/gomatrixserverlib"
+)
+
+// RoomserverProducer produces events for the roomserver to consume.
+type RoomserverProducer struct {
+	InputAPI   api.RoomserverInputAPI
+	serverName gomatrixserverlib.ServerName
+}
+
+// NewRoomserverProducer creates a new RoomserverProducer
+func NewRoomserverProducer(
+	inputAPI api.RoomserverInputAPI, serverName gomatrixserverlib.ServerName,
+) *RoomserverProducer {
+	return &RoomserverProducer{
+		InputAPI:   inputAPI,
+		serverName: serverName,
+	}
+}
+
+// SendInviteResponse drops an invite response back into the roomserver so that users
+// already in the room will be notified of the new invite. The invite response is signed
+// by the remote side.
+func (c *RoomserverProducer) SendInviteResponse(
+	ctx context.Context, res gomatrixserverlib.RespInviteV2, roomVersion gomatrixserverlib.RoomVersion,
+) (string, error) {
+	ev := res.Event.Headered(roomVersion)
+	ire := api.InputRoomEvent{
+		Kind:          api.KindNew,
+		Event:         ev,
+		AuthEventIDs:  ev.AuthEventIDs(),
+		SendAsServer:  string(c.serverName),
+		TransactionID: nil,
+	}
+	return c.SendInputRoomEvents(ctx, []api.InputRoomEvent{ire})
+}
+
+// SendInputRoomEvents writes the given input room events to the roomserver input API.
+func (c *RoomserverProducer) SendInputRoomEvents(
+	ctx context.Context, ires []api.InputRoomEvent,
+) (eventID string, err error) {
+	request := api.InputRoomEventsRequest{InputRoomEvents: ires}
+	var response api.InputRoomEventsResponse
+	err = c.InputAPI.InputRoomEvents(ctx, &request, &response)
+	eventID = response.EventID
+	return
+}

federationsender/queue/destinationqueue.go

@@ -21,6 +21,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/matrix-org/dendrite/federationsender/producers"
 	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/matrix-org/util"
 	log "github.com/sirupsen/logrus"
@@ -32,6 +33,7 @@ import (
 // ensures that only one request is in flight to a given destination
 // at a time.
 type destinationQueue struct {
+	rsProducer  *producers.RoomserverProducer
 	client      *gomatrixserverlib.FederationClient
 	origin      gomatrixserverlib.ServerName
 	destination gomatrixserverlib.ServerName
@@ -165,18 +167,38 @@ func (oq *destinationQueue) nextInvites() bool {
 	}
 
 	for _, inviteReq := range oq.pendingInvites {
-		ev := inviteReq.Event()
+		ev, roomVersion := inviteReq.Event(), inviteReq.RoomVersion()
 
-		if _, err := oq.client.SendInviteV2(
+		log.WithFields(log.Fields{
+			"event_id":     ev.EventID(),
+			"room_version": roomVersion,
+			"destination":  oq.destination,
+		}).Info("sending invite")
+
+		inviteRes, err := oq.client.SendInviteV2(
 			context.TODO(),
 			oq.destination,
 			*inviteReq,
-		); err != nil {
+		)
+		if err != nil {
 			log.WithFields(log.Fields{
 				"event_id":    ev.EventID(),
 				"state_key":   ev.StateKey(),
 				"destination": oq.destination,
 			}).WithError(err).Error("failed to send invite")
+			continue
+		}
+
+		if _, err = oq.rsProducer.SendInviteResponse(
+			context.TODO(),
+			inviteRes,
+			roomVersion,
+		); err != nil {
+			log.WithFields(log.Fields{
+				"event_id":    ev.EventID(),
+				"state_key":   ev.StateKey(),
+				"destination": oq.destination,
+			}).WithError(err).Error("failed to return signed invite to roomserver")
 		}
 	}
 

federationsender/queue/queue.go

@@ -18,6 +18,7 @@ import (
 	"fmt"
 	"sync"
 
+	"github.com/matrix-org/dendrite/federationsender/producers"
 	"github.com/matrix-org/gomatrixserverlib"
 	log "github.com/sirupsen/logrus"
 )
@@ -25,6 +26,7 @@ import (
 // OutgoingQueues is a collection of queues for sending transactions to other
 // matrix servers
 type OutgoingQueues struct {
+	rsProducer *producers.RoomserverProducer
 	origin     gomatrixserverlib.ServerName
 	client     *gomatrixserverlib.FederationClient
 	// The queuesMutex protects queues
@@ -33,8 +35,13 @@ type OutgoingQueues struct {
 }
 
 // NewOutgoingQueues makes a new OutgoingQueues
-func NewOutgoingQueues(origin gomatrixserverlib.ServerName, client *gomatrixserverlib.FederationClient) *OutgoingQueues {
+func NewOutgoingQueues(
+	origin gomatrixserverlib.ServerName,
+	client *gomatrixserverlib.FederationClient,
+	rsProducer *producers.RoomserverProducer,
+) *OutgoingQueues {
 	return &OutgoingQueues{
+		rsProducer: rsProducer,
 		origin:     origin,
 		client:     client,
 		queues:     map[gomatrixserverlib.ServerName]*destinationQueue{},
@@ -67,6 +74,7 @@ func (oqs *OutgoingQueues) SendEvent(
 		oq := oqs.queues[destination]
 		if oq == nil {
 			oq = &destinationQueue{
+				rsProducer:  oqs.rsProducer,
 				origin:      oqs.origin,
 				destination: destination,
 				client:      oqs.client,
@@ -111,6 +119,7 @@ func (oqs *OutgoingQueues) SendInvite(
 	oq := oqs.queues[destination]
 	if oq == nil {
 		oq = &destinationQueue{
+			rsProducer:  oqs.rsProducer,
 			origin:      oqs.origin,
 			destination: destination,
 			client:      oqs.client,
@@ -151,6 +160,7 @@ func (oqs *OutgoingQueues) SendEDU(
 		oq := oqs.queues[destination]
 		if oq == nil {
 			oq = &destinationQueue{
+				rsProducer:  oqs.rsProducer,
 				origin:      oqs.origin,
 				destination: destination,
 				client:      oqs.client,

go.mod

@@ -17,7 +17,7 @@ require (
 	github.com/matrix-org/go-http-js-libp2p v0.0.0-20200318135427-31631a9ef51f
 	github.com/matrix-org/go-sqlite3-js v0.0.0-20200325174927-327088cdef10
 	github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26
-	github.com/matrix-org/gomatrixserverlib v0.0.0-20200427134702-21db6d1430e3
+	github.com/matrix-org/gomatrixserverlib v0.0.0-20200428095012-a95e289995b1
 	github.com/matrix-org/naffka v0.0.0-20200422140631-181f1ee7401f
 	github.com/matrix-org/util v0.0.0-20190711121626-527ce5ddefc7
 	github.com/mattn/go-sqlite3 v2.0.2+incompatible

go.sum

@@ -367,8 +367,8 @@ github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26 h1:Hr3zjRsq2bh
 github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26/go.mod h1:3fxX6gUjWyI/2Bt7J1OLhpCzOfO/bB3AiX0cJtEKud0=
 github.com/matrix-org/gomatrixserverlib v0.0.0-20200124100636-0c2ec91d1df5 h1:kmRjpmFOenVpOaV/DRlo9p6z/IbOKlUC+hhKsAAh8Qg=
 github.com/matrix-org/gomatrixserverlib v0.0.0-20200124100636-0c2ec91d1df5/go.mod h1:FsKa2pWE/bpQql9H7U4boOPXFoJX/QcqaZZ6ijLkaZI=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20200427134702-21db6d1430e3 h1:aJMAKjfXG5I8TqPxJQbQIkGSWM770oxkpgsPHE8C06E=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20200428095012-a95e289995b1 h1:TB4V69eOtvmHdFp0+BgLNrDCcCwq6QDUOTjmi8fjC/M=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20200427134702-21db6d1430e3/go.mod h1:JsAzE1Ll3+gDWS9JSUHPJiiyAksvOOnGWF2nXdg4ZzU=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20200428095012-a95e289995b1/go.mod h1:JsAzE1Ll3+gDWS9JSUHPJiiyAksvOOnGWF2nXdg4ZzU=
 github.com/matrix-org/naffka v0.0.0-20200127221512-0716baaabaf1 h1:osLoFdOy+ChQqVUn2PeTDETFftVkl4w9t/OW18g3lnk=
 github.com/matrix-org/naffka v0.0.0-20200127221512-0716baaabaf1/go.mod h1:cXoYQIENbdWIQHt1SyCo6Bl3C3raHwJ0wgVrXHSqf+A=
 github.com/matrix-org/naffka v0.0.0-20200422140631-181f1ee7401f h1:pRz4VTiRCO4zPlEMc3ESdUOcW4PXHH4Kj+YDz1XyE+Y=

sytest-whitelist

@@ -253,3 +253,8 @@ User can invite local user to room with version 3
 User can invite local user to room with version 4
 A pair of servers can establish a join in a v2 room
 Can logout all devices
+State from remote users is included in the timeline in an incremental sync
+User can invite remote user to room with version 1
+User can invite remote user to room with version 2
+User can invite remote user to room with version 3
+User can invite remote user to room with version 4