Merge branch 'master' into add-nats-support

.gitignore

@@ -19,6 +19,7 @@
 /_test
 /vendor/bin
 /docker/build
+/logs
 
 # Architecture specific extensions/prefixes
 *.[568vq]

.golangci.yml

@@ -102,7 +102,7 @@ linters-settings:
     #local-prefixes: github.com/org/project
   gocyclo:
     # minimal code complexity to report, 30 by default (but we recommend 10-20)
-    min-complexity: 13
+    min-complexity: 25
   maligned:
     # print struct with more effective memory layout or not, false by default
     suggest-new: true

appservice/appservice.go

@@ -16,6 +16,7 @@ package appservice
 
 import (
 	"context"
+	"crypto/tls"
 	"net/http"
 	"sync"
 	"time"
@@ -48,6 +49,15 @@ func NewInternalAPI(
 	userAPI userapi.UserInternalAPI,
 	rsAPI roomserverAPI.RoomserverInternalAPI,
 ) appserviceAPI.AppServiceQueryAPI {
+	client := &http.Client{
+		Timeout: time.Second * 30,
+		Transport: &http.Transport{
+			DisableKeepAlives: true,
+			TLSClientConfig: &tls.Config{
+				InsecureSkipVerify: base.Cfg.AppServiceAPI.DisableTLSValidation,
+			},
+		},
+	}
 	consumer, _ := kafka.SetupConsumerProducer(&base.Cfg.Global.Kafka)
 
 	// Create a connection to the appservice postgres DB
@@ -79,10 +89,8 @@ func NewInternalAPI(
 	// Create appserivce query API with an HTTP client that will be used for all
 	// outbound and inbound requests (inbound only for the internal API)
 	appserviceQueryAPI := &query.AppServiceQueryAPI{
-		HTTPClient: &http.Client{
-			Timeout: time.Second * 30,
-		},
-		Cfg: base.Cfg,
+		HTTPClient: client,
+		Cfg:        base.Cfg,
 	}
 
 	// Only consume if we actually have ASes to track, else we'll just chew cycles needlessly.
@@ -98,7 +106,7 @@ func NewInternalAPI(
 	}
 
 	// Create application service transaction workers
-	if err := workers.SetupTransactionWorkers(appserviceDB, workerStates); err != nil {
+	if err := workers.SetupTransactionWorkers(client, appserviceDB, workerStates); err != nil {
 		logrus.WithError(err).Panicf("failed to start app service transaction workers")
 	}
 	return appserviceQueryAPI

appservice/consumers/roomserver.go

@@ -85,9 +85,6 @@ func (s *OutputRoomEventConsumer) onMessage(msg *sarama.ConsumerMessage) error {
 	}
 
 	if output.Type != api.OutputTypeNewRoomEvent {
-		log.WithField("type", output.Type).Debug(
-			"roomserver output log: ignoring unknown output type",
-		)
 		return nil
 	}
 
@@ -114,6 +111,7 @@ func (s *OutputRoomEventConsumer) filterRoomserverEvents(
 				// Queue this event to be sent off to the application service
 				if err := s.asDB.StoreEvent(ctx, ws.AppService.ID, event); err != nil {
 					log.WithError(err).Warn("failed to insert incoming event into appservices database")
+					return err
 				} else {
 					// Tell our worker to send out new messages by updating remaining message
 					// count and waking them up with a broadcast
@@ -126,8 +124,43 @@ func (s *OutputRoomEventConsumer) filterRoomserverEvents(
 	return nil
 }
 
+// appserviceJoinedAtEvent returns a boolean depending on whether a given
+// appservice has membership at the time a given event was created.
+func (s *OutputRoomEventConsumer) appserviceJoinedAtEvent(ctx context.Context, event *gomatrixserverlib.HeaderedEvent, appservice config.ApplicationService) bool {
+	// TODO: This is only checking the current room state, not the state at
+	// the event in question. Pretty sure this is what Synapse does too, but
+	// until we have a lighter way of checking the state before the event that
+	// doesn't involve state res, then this is probably OK.
+	membershipReq := &api.QueryMembershipsForRoomRequest{
+		RoomID:     event.RoomID(),
+		JoinedOnly: true,
+	}
+	membershipRes := &api.QueryMembershipsForRoomResponse{}
+
+	// XXX: This could potentially race if the state for the event is not known yet
+	// e.g. the event came over federation but we do not have the full state persisted.
+	if err := s.rsAPI.QueryMembershipsForRoom(ctx, membershipReq, membershipRes); err == nil {
+		for _, ev := range membershipRes.JoinEvents {
+			var membership gomatrixserverlib.MemberContent
+			if err = json.Unmarshal(ev.Content, &membership); err != nil || ev.StateKey == nil {
+				continue
+			}
+			if appservice.IsInterestedInUserID(*ev.StateKey) {
+				return true
+			}
+		}
+	} else {
+		log.WithFields(log.Fields{
+			"room_id": event.RoomID(),
+		}).WithError(err).Errorf("Unable to get membership for room")
+	}
+	return false
+}
+
 // appserviceIsInterestedInEvent returns a boolean depending on whether a given
 // event falls within one of a given application service's namespaces.
+//
+// TODO: This should be cached, see https://github.com/matrix-org/dendrite/issues/1682
 func (s *OutputRoomEventConsumer) appserviceIsInterestedInEvent(ctx context.Context, event *gomatrixserverlib.HeaderedEvent, appservice config.ApplicationService) bool {
 	// No reason to queue events if they'll never be sent to the application
 	// service
@@ -162,5 +195,6 @@ func (s *OutputRoomEventConsumer) appserviceIsInterestedInEvent(ctx context.Cont
 		}).WithError(err).Errorf("Unable to get aliases for room")
 	}
 
-	return false
+	// Check if any of the members in the room match the appservice
+	return s.appserviceJoinedAtEvent(ctx, event, appservice)
 }

appservice/query/query.go

@@ -20,7 +20,6 @@ import (
 	"context"
 	"net/http"
 	"net/url"
-	"time"
 
 	"github.com/matrix-org/dendrite/appservice/api"
 	"github.com/matrix-org/dendrite/setup/config"
@@ -47,11 +46,6 @@ func (a *AppServiceQueryAPI) RoomAliasExists(
 	span, ctx := opentracing.StartSpanFromContext(ctx, "ApplicationServiceRoomAlias")
 	defer span.Finish()
 
-	// Create an HTTP client if one does not already exist
-	if a.HTTPClient == nil {
-		a.HTTPClient = makeHTTPClient()
-	}
-
 	// Determine which application service should handle this request
 	for _, appservice := range a.Cfg.Derived.ApplicationServices {
 		if appservice.URL != "" && appservice.IsInterestedInRoomAlias(request.Alias) {
@@ -115,11 +109,6 @@ func (a *AppServiceQueryAPI) UserIDExists(
 	span, ctx := opentracing.StartSpanFromContext(ctx, "ApplicationServiceUserID")
 	defer span.Finish()
 
-	// Create an HTTP client if one does not already exist
-	if a.HTTPClient == nil {
-		a.HTTPClient = makeHTTPClient()
-	}
-
 	// Determine which application service should handle this request
 	for _, appservice := range a.Cfg.Derived.ApplicationServices {
 		if appservice.URL != "" && appservice.IsInterestedInUserID(request.UserID) {
@@ -169,10 +158,3 @@ func (a *AppServiceQueryAPI) UserIDExists(
 	response.UserIDExists = false
 	return nil
 }
-
-// makeHTTPClient creates an HTTP client with certain options that will be used for all query requests to application services
-func makeHTTPClient() *http.Client {
-	return &http.Client{
-		Timeout: time.Second * 30,
-	}
-}

appservice/workers/transaction_scheduler.go

@@ -34,8 +34,6 @@ import (
 var (
 	// Maximum size of events sent in each transaction.
 	transactionBatchSize = 50
-	// Timeout for sending a single transaction to an application service.
-	transactionTimeout = time.Second * 60
 )
 
 // SetupTransactionWorkers spawns a separate goroutine for each application
@@ -44,6 +42,7 @@ var (
 // size), then send that off to the AS's /transactions/{txnID} endpoint. It also
 // handles exponentially backing off in case the AS isn't currently available.
 func SetupTransactionWorkers(
+	client *http.Client,
 	appserviceDB storage.Database,
 	workerStates []types.ApplicationServiceWorkerState,
 ) error {
@@ -51,7 +50,7 @@ func SetupTransactionWorkers(
 	for _, workerState := range workerStates {
 		// Don't create a worker if this AS doesn't want to receive events
 		if workerState.AppService.URL != "" {
-			go worker(appserviceDB, workerState)
+			go worker(client, appserviceDB, workerState)
 		}
 	}
 	return nil
@@ -59,17 +58,12 @@ func SetupTransactionWorkers(
 
 // worker is a goroutine that sends any queued events to the application service
 // it is given.
-func worker(db storage.Database, ws types.ApplicationServiceWorkerState) {
+func worker(client *http.Client, db storage.Database, ws types.ApplicationServiceWorkerState) {
 	log.WithFields(log.Fields{
 		"appservice": ws.AppService.ID,
-	}).Info("starting application service")
+	}).Info("Starting application service")
 	ctx := context.Background()
 
-	// Create a HTTP client for sending requests to app services
-	client := &http.Client{
-		Timeout: transactionTimeout,
-	}
-
 	// Initial check for any leftover events to send from last time
 	eventCount, err := db.CountEventsWithAppServiceID(ctx, ws.AppService.ID)
 	if err != nil {

build/docker/Dockerfile.monolith

@@ -14,7 +14,7 @@ RUN go build -trimpath -o bin/ ./cmd/generate-keys
 
 FROM alpine:latest
 
-COPY --from=base /build/bin/* /usr/bin
+COPY --from=base /build/bin/* /usr/bin/
 
 VOLUME /etc/dendrite
 WORKDIR /etc/dendrite

build/docker/Dockerfile.polylith

@@ -14,7 +14,7 @@ RUN go build -trimpath -o bin/ ./cmd/generate-keys
 
 FROM alpine:latest
 
-COPY --from=base /build/bin/* /usr/bin
+COPY --from=base /build/bin/* /usr/bin/
 
 VOLUME /etc/dendrite
 WORKDIR /etc/dendrite

build/docker/docker-compose.monolith.yml

@@ -12,6 +12,7 @@ services:
       - 8448:8448
     volumes:
       - ./config:/etc/dendrite
+      - ./media:/var/dendrite/media
     networks:
       - internal
 

build/docker/docker-compose.polylith.yml

@@ -15,6 +15,7 @@ services:
     command: mediaapi
     volumes:
       - ./config:/etc/dendrite
+      - ./media:/var/dendrite/media
     networks:
       - internal
 

build/gobind-pinecone/build.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+TARGET=""
+
+while getopts "ai" option
+do
+    case "$option"
+    in
+    a) gomobile bind -v -target android -trimpath -ldflags="-s -w" github.com/matrix-org/dendrite/build/gobind-pinecone ;;
+    i) gomobile bind -v -target ios -trimpath -ldflags="-s -w" github.com/matrix-org/dendrite/build/gobind-pinecone ;;
+    *) echo "No target specified, specify -a or -i"; exit 1 ;;
+    esac
+done

build/gobind-pinecone/monolith.go

@@ -0,0 +1,418 @@
+package gobind
+
+import (
+	"context"
+	"crypto/ed25519"
+	"crypto/rand"
+	"crypto/tls"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"log"
+	"math"
+	"net"
+	"net/http"
+	"os"
+	"sync"
+	"time"
+
+	"github.com/gorilla/mux"
+	"github.com/matrix-org/dendrite/appservice"
+	"github.com/matrix-org/dendrite/clientapi/userutil"
+	"github.com/matrix-org/dendrite/cmd/dendrite-demo-pinecone/conn"
+	"github.com/matrix-org/dendrite/cmd/dendrite-demo-pinecone/rooms"
+	"github.com/matrix-org/dendrite/cmd/dendrite-demo-yggdrasil/signing"
+	"github.com/matrix-org/dendrite/eduserver"
+	"github.com/matrix-org/dendrite/eduserver/cache"
+	"github.com/matrix-org/dendrite/federationsender"
+	"github.com/matrix-org/dendrite/federationsender/api"
+	"github.com/matrix-org/dendrite/internal/httputil"
+	"github.com/matrix-org/dendrite/keyserver"
+	"github.com/matrix-org/dendrite/roomserver"
+	"github.com/matrix-org/dendrite/setup"
+	"github.com/matrix-org/dendrite/setup/config"
+	"github.com/matrix-org/dendrite/setup/process"
+	"github.com/matrix-org/dendrite/userapi"
+	userapiAPI "github.com/matrix-org/dendrite/userapi/api"
+	"github.com/matrix-org/gomatrixserverlib"
+	"github.com/sirupsen/logrus"
+	"go.uber.org/atomic"
+	"golang.org/x/net/http2"
+	"golang.org/x/net/http2/h2c"
+
+	pineconeMulticast "github.com/matrix-org/pinecone/multicast"
+	pineconeRouter "github.com/matrix-org/pinecone/router"
+	pineconeSessions "github.com/matrix-org/pinecone/sessions"
+	"github.com/matrix-org/pinecone/types"
+	pineconeTypes "github.com/matrix-org/pinecone/types"
+)
+
+const (
+	PeerTypeRemote    = pineconeRouter.PeerTypeRemote
+	PeerTypeMulticast = pineconeRouter.PeerTypeMulticast
+	PeerTypeBluetooth = pineconeRouter.PeerTypeBluetooth
+)
+
+type DendriteMonolith struct {
+	logger             logrus.Logger
+	PineconeRouter     *pineconeRouter.Router
+	PineconeMulticast  *pineconeMulticast.Multicast
+	PineconeQUIC       *pineconeSessions.Sessions
+	StorageDirectory   string
+	CacheDirectory     string
+	staticPeerURI      string
+	staticPeerMutex    sync.RWMutex
+	staticPeerAttempts atomic.Uint32
+	listener           net.Listener
+	httpServer         *http.Server
+	processContext     *process.ProcessContext
+	userAPI            userapiAPI.UserInternalAPI
+}
+
+func (m *DendriteMonolith) BaseURL() string {
+	return fmt.Sprintf("http://%s", m.listener.Addr().String())
+}
+
+func (m *DendriteMonolith) PeerCount(peertype int) int {
+	return m.PineconeRouter.PeerCount(peertype)
+}
+
+func (m *DendriteMonolith) SessionCount() int {
+	return len(m.PineconeQUIC.Sessions())
+}
+
+func (m *DendriteMonolith) SetMulticastEnabled(enabled bool) {
+	if enabled {
+		m.PineconeMulticast.Start()
+	} else {
+		m.PineconeMulticast.Stop()
+		m.DisconnectType(pineconeRouter.PeerTypeMulticast)
+	}
+}
+
+func (m *DendriteMonolith) SetStaticPeer(uri string) {
+	m.staticPeerMutex.Lock()
+	m.staticPeerURI = uri
+	m.staticPeerMutex.Unlock()
+	m.DisconnectType(pineconeRouter.PeerTypeRemote)
+	if uri != "" {
+		m.staticPeerConnect()
+	}
+}
+
+func (m *DendriteMonolith) DisconnectType(peertype int) {
+	for _, p := range m.PineconeRouter.Peers() {
+		if peertype == p.PeerType {
+			_ = m.PineconeRouter.Disconnect(types.SwitchPortID(p.Port), nil)
+		}
+	}
+}
+
+func (m *DendriteMonolith) DisconnectZone(zone string) {
+	for _, p := range m.PineconeRouter.Peers() {
+		if zone == p.Zone {
+			_ = m.PineconeRouter.Disconnect(types.SwitchPortID(p.Port), nil)
+		}
+	}
+}
+
+func (m *DendriteMonolith) DisconnectPort(port int) error {
+	return m.PineconeRouter.Disconnect(types.SwitchPortID(port), nil)
+}
+
+func (m *DendriteMonolith) Conduit(zone string, peertype int) (*Conduit, error) {
+	l, r := net.Pipe()
+	conduit := &Conduit{conn: r, port: 0}
+	go func() {
+		conduit.portMutex.Lock()
+		defer conduit.portMutex.Unlock()
+	loop:
+		for i := 1; i <= 10; i++ {
+			logrus.Errorf("Attempting authenticated connect (attempt %d)", i)
+			var err error
+			conduit.port, err = m.PineconeRouter.AuthenticatedConnect(l, zone, peertype)
+			switch err {
+			case io.ErrClosedPipe:
+				logrus.Errorf("Authenticated connect failed due to closed pipe (attempt %d)", i)
+				return
+			case io.EOF:
+				logrus.Errorf("Authenticated connect failed due to EOF (attempt %d)", i)
+				break loop
+			case nil:
+				logrus.Errorf("Authenticated connect succeeded, connected to port %d (attempt %d)", conduit.port, i)
+				return
+			default:
+				logrus.WithError(err).Errorf("Authenticated connect failed (attempt %d)", i)
+				time.Sleep(time.Second)
+			}
+		}
+		_ = l.Close()
+		_ = r.Close()
+	}()
+	return conduit, nil
+}
+
+func (m *DendriteMonolith) RegisterUser(localpart, password string) (string, error) {
+	pubkey := m.PineconeRouter.PublicKey()
+	userID := userutil.MakeUserID(
+		localpart,
+		gomatrixserverlib.ServerName(hex.EncodeToString(pubkey[:])),
+	)
+	userReq := &userapiAPI.PerformAccountCreationRequest{
+		AccountType: userapiAPI.AccountTypeUser,
+		Localpart:   localpart,
+		Password:    password,
+	}
+	userRes := &userapiAPI.PerformAccountCreationResponse{}
+	if err := m.userAPI.PerformAccountCreation(context.Background(), userReq, userRes); err != nil {
+		return userID, fmt.Errorf("userAPI.PerformAccountCreation: %w", err)
+	}
+	return userID, nil
+}
+
+func (m *DendriteMonolith) RegisterDevice(localpart, deviceID string) (string, error) {
+	accessTokenBytes := make([]byte, 16)
+	n, err := rand.Read(accessTokenBytes)
+	if err != nil {
+		return "", fmt.Errorf("rand.Read: %w", err)
+	}
+	loginReq := &userapiAPI.PerformDeviceCreationRequest{
+		Localpart:   localpart,
+		DeviceID:    &deviceID,
+		AccessToken: hex.EncodeToString(accessTokenBytes[:n]),
+	}
+	loginRes := &userapiAPI.PerformDeviceCreationResponse{}
+	if err := m.userAPI.PerformDeviceCreation(context.Background(), loginReq, loginRes); err != nil {
+		return "", fmt.Errorf("userAPI.PerformDeviceCreation: %w", err)
+	}
+	if !loginRes.DeviceCreated {
+		return "", fmt.Errorf("device was not created")
+	}
+	return loginRes.Device.AccessToken, nil
+}
+
+func (m *DendriteMonolith) staticPeerConnect() {
+	m.staticPeerMutex.RLock()
+	uri := m.staticPeerURI
+	m.staticPeerMutex.RUnlock()
+	if uri == "" {
+		return
+	}
+	if err := conn.ConnectToPeer(m.PineconeRouter, uri); err != nil {
+		exp := time.Second * time.Duration(math.Exp2(float64(m.staticPeerAttempts.Inc())))
+		time.AfterFunc(exp, m.staticPeerConnect)
+	} else {
+		m.staticPeerAttempts.Store(0)
+	}
+}
+
+// nolint:gocyclo
+func (m *DendriteMonolith) Start() {
+	var err error
+	var sk ed25519.PrivateKey
+	var pk ed25519.PublicKey
+	keyfile := fmt.Sprintf("%s/p2p.key", m.StorageDirectory)
+	if _, err = os.Stat(keyfile); os.IsNotExist(err) {
+		if pk, sk, err = ed25519.GenerateKey(nil); err != nil {
+			panic(err)
+		}
+		if err = ioutil.WriteFile(keyfile, sk, 0644); err != nil {
+			panic(err)
+		}
+	} else if err == nil {
+		if sk, err = ioutil.ReadFile(keyfile); err != nil {
+			panic(err)
+		}
+		if len(sk) != ed25519.PrivateKeySize {
+			panic("the private key is not long enough")
+		}
+		pk = sk.Public().(ed25519.PublicKey)
+	}
+
+	m.listener, err = net.Listen("tcp", "localhost:65432")
+	if err != nil {
+		panic(err)
+	}
+
+	m.logger = logrus.Logger{
+		Out: BindLogger{},
+	}
+	m.logger.SetOutput(BindLogger{})
+	logrus.SetOutput(BindLogger{})
+
+	logger := log.New(os.Stdout, "PINECONE: ", 0)
+	m.PineconeRouter = pineconeRouter.NewRouter(logger, "dendrite", sk, pk, nil)
+	m.PineconeQUIC = pineconeSessions.NewSessions(logger, m.PineconeRouter)
+	m.PineconeMulticast = pineconeMulticast.NewMulticast(logger, m.PineconeRouter)
+
+	m.PineconeRouter.SetDisconnectedCallback(func(port pineconeTypes.SwitchPortID, public pineconeTypes.PublicKey, peertype int, err error) {
+		if peertype == pineconeRouter.PeerTypeRemote {
+			m.staticPeerAttempts.Store(0)
+			time.AfterFunc(time.Second, m.staticPeerConnect)
+		}
+	})
+
+	prefix := hex.EncodeToString(pk)
+	cfg := &config.Dendrite{}
+	cfg.Defaults()
+	cfg.Global.ServerName = gomatrixserverlib.ServerName(hex.EncodeToString(pk))
+	cfg.Global.PrivateKey = sk
+	cfg.Global.KeyID = gomatrixserverlib.KeyID(signing.KeyID)
+	cfg.Global.Kafka.UseNaffka = true
+	cfg.Global.Kafka.Database.ConnectionString = config.DataSource(fmt.Sprintf("file:%s/%s-naffka.db", m.StorageDirectory, prefix))
+	cfg.UserAPI.AccountDatabase.ConnectionString = config.DataSource(fmt.Sprintf("file:%s/%s-account.db", m.StorageDirectory, prefix))
+	cfg.UserAPI.DeviceDatabase.ConnectionString = config.DataSource(fmt.Sprintf("file:%s/%s-device.db", m.StorageDirectory, prefix))
+	cfg.MediaAPI.Database.ConnectionString = config.DataSource(fmt.Sprintf("file:%s/%s-mediaapi.db", m.CacheDirectory, prefix))
+	cfg.SyncAPI.Database.ConnectionString = config.DataSource(fmt.Sprintf("file:%s/%s-syncapi.db", m.StorageDirectory, prefix))
+	cfg.RoomServer.Database.ConnectionString = config.DataSource(fmt.Sprintf("file:%s/%s-roomserver.db", m.StorageDirectory, prefix))
+	cfg.SigningKeyServer.Database.ConnectionString = config.DataSource(fmt.Sprintf("file:%s/%s-signingkeyserver.db", m.StorageDirectory, prefix))
+	cfg.KeyServer.Database.ConnectionString = config.DataSource(fmt.Sprintf("file:%s/%s-keyserver.db", m.StorageDirectory, prefix))
+	cfg.FederationSender.Database.ConnectionString = config.DataSource(fmt.Sprintf("file:%s/%s-federationsender.db", m.StorageDirectory, prefix))
+	cfg.AppServiceAPI.Database.ConnectionString = config.DataSource(fmt.Sprintf("file:%s/%s-appservice.db", m.StorageDirectory, prefix))
+	cfg.MediaAPI.BasePath = config.Path(fmt.Sprintf("%s/media", m.CacheDirectory))
+	cfg.MediaAPI.AbsBasePath = config.Path(fmt.Sprintf("%s/media", m.CacheDirectory))
+	if err := cfg.Derive(); err != nil {
+		panic(err)
+	}
+
+	base := setup.NewBaseDendrite(cfg, "Monolith", false)
+	defer base.Close() // nolint: errcheck
+
+	accountDB := base.CreateAccountsDB()
+	federation := conn.CreateFederationClient(base, m.PineconeQUIC)
+
+	serverKeyAPI := &signing.YggdrasilKeys{}
+	keyRing := serverKeyAPI.KeyRing()
+
+	rsAPI := roomserver.NewInternalAPI(
+		base, keyRing,
+	)
+
+	fsAPI := federationsender.NewInternalAPI(
+		base, federation, rsAPI, keyRing,
+	)
+
+	keyAPI := keyserver.NewInternalAPI(&base.Cfg.KeyServer, fsAPI)
+	m.userAPI = userapi.NewInternalAPI(accountDB, &cfg.UserAPI, cfg.Derived.ApplicationServices, keyAPI)
+	keyAPI.SetUserAPI(m.userAPI)
+
+	eduInputAPI := eduserver.NewInternalAPI(
+		base, cache.New(), m.userAPI,
+	)
+
+	asAPI := appservice.NewInternalAPI(base, m.userAPI, rsAPI)
+
+	// The underlying roomserver implementation needs to be able to call the fedsender.
+	// This is different to rsAPI which can be the http client which doesn't need this dependency
+	rsAPI.SetFederationSenderAPI(fsAPI)
+
+	monolith := setup.Monolith{
+		Config:    base.Cfg,
+		AccountDB: accountDB,
+		Client:    conn.CreateClient(base, m.PineconeQUIC),
+		FedClient: federation,
+		KeyRing:   keyRing,
+
+		AppserviceAPI:          asAPI,
+		EDUInternalAPI:         eduInputAPI,
+		FederationSenderAPI:    fsAPI,
+		RoomserverAPI:          rsAPI,
+		UserAPI:                m.userAPI,
+		KeyAPI:                 keyAPI,
+		ExtPublicRoomsProvider: rooms.NewPineconeRoomProvider(m.PineconeRouter, m.PineconeQUIC, fsAPI, federation),
+	}
+	monolith.AddAllPublicRoutes(
+		base.ProcessContext,
+		base.PublicClientAPIMux,
+		base.PublicFederationAPIMux,
+		base.PublicKeyAPIMux,
+		base.PublicMediaAPIMux,
+	)
+
+	httpRouter := mux.NewRouter().SkipClean(true).UseEncodedPath()
+	httpRouter.PathPrefix(httputil.InternalPathPrefix).Handler(base.InternalAPIMux)
+	httpRouter.PathPrefix(httputil.PublicClientPathPrefix).Handler(base.PublicClientAPIMux)
+	httpRouter.PathPrefix(httputil.PublicMediaPathPrefix).Handler(base.PublicMediaAPIMux)
+
+	pMux := mux.NewRouter().SkipClean(true).UseEncodedPath()
+	pMux.PathPrefix(httputil.PublicFederationPathPrefix).Handler(base.PublicFederationAPIMux)
+	pMux.PathPrefix(httputil.PublicMediaPathPrefix).Handler(base.PublicMediaAPIMux)
+
+	pHTTP := m.PineconeQUIC.HTTP()
+	pHTTP.Mux().Handle(httputil.PublicFederationPathPrefix, pMux)
+	pHTTP.Mux().Handle(httputil.PublicMediaPathPrefix, pMux)
+
+	// Build both ends of a HTTP multiplex.
+	h2s := &http2.Server{}
+	m.httpServer = &http.Server{
+		Addr:         ":0",
+		TLSNextProto: map[string]func(*http.Server, *tls.Conn, http.Handler){},
+		ReadTimeout:  10 * time.Second,
+		WriteTimeout: 10 * time.Second,
+		IdleTimeout:  30 * time.Second,
+		BaseContext: func(_ net.Listener) context.Context {
+			return context.Background()
+		},
+		Handler: h2c.NewHandler(pMux, h2s),
+	}
+	m.processContext = base.ProcessContext
+
+	go func() {
+		m.logger.Info("Listening on ", cfg.Global.ServerName)
+		m.logger.Fatal(m.httpServer.Serve(m.PineconeQUIC))
+	}()
+	go func() {
+		logrus.Info("Listening on ", m.listener.Addr())
+		logrus.Fatal(http.Serve(m.listener, httpRouter))
+	}()
+	go func() {
+		logrus.Info("Sending wake-up message to known nodes")
+		req := &api.PerformBroadcastEDURequest{}
+		res := &api.PerformBroadcastEDUResponse{}
+		if err := fsAPI.PerformBroadcastEDU(context.TODO(), req, res); err != nil {
+			logrus.WithError(err).Error("Failed to send wake-up message to known nodes")
+		}
+	}()
+}
+
+func (m *DendriteMonolith) Stop() {
+	_ = m.listener.Close()
+	m.PineconeMulticast.Stop()
+	_ = m.PineconeQUIC.Close()
+	m.processContext.ShutdownDendrite()
+	_ = m.PineconeRouter.Close()
+}
+
+type Conduit struct {
+	conn      net.Conn
+	port      types.SwitchPortID
+	portMutex sync.Mutex
+}
+
+func (c *Conduit) Port() int {
+	c.portMutex.Lock()
+	defer c.portMutex.Unlock()
+	return int(c.port)
+}
+
+func (c *Conduit) Read(b []byte) (int, error) {
+	return c.conn.Read(b)
+}
+
+func (c *Conduit) ReadCopy() ([]byte, error) {
+	var buf [65535 * 2]byte
+	n, err := c.conn.Read(buf[:])
+	if err != nil {
+		return nil, err
+	}
+	return buf[:n], nil
+}
+
+func (c *Conduit) Write(b []byte) (int, error) {
+	return c.conn.Write(b)
+}
+
+func (c *Conduit) Close() error {
+	return c.conn.Close()
+}

build/gobind-yggdrasil/build.sh

@@ -0,0 +1,25 @@
+#!/bin/sh
+
+#!/bin/sh
+
+TARGET=""
+
+while getopts "ai" option
+do
+    case "$option"
+    in
+    a) TARGET="android";;
+    i) TARGET="ios";;
+    esac
+done
+
+if [[ $TARGET = "" ]];
+then
+    echo "No target specified, specify -a or -i"
+    exit 1
+fi
+
+gomobile bind -v \
+    -target $TARGET \
+    -ldflags "-X github.com/yggdrasil-network/yggdrasil-go/src/version.buildName=dendrite" \
+    github.com/matrix-org/dendrite/build/gobind-pinecone

build/gobind-yggdrasil/platform_ios.go

@@ -0,0 +1,25 @@
+// +build ios
+
+package gobind
+
+/*
+#cgo CFLAGS: -x objective-c
+#cgo LDFLAGS: -framework Foundation
+#import <Foundation/Foundation.h>
+void Log(const char *text) {
+  NSString *nss = [NSString stringWithUTF8String:text];
+  NSLog(@"%@", nss);
+}
+*/
+import "C"
+import "unsafe"
+
+type BindLogger struct {
+}
+
+func (nsl BindLogger) Write(p []byte) (n int, err error) {
+	p = append(p, 0)
+	cstr := (*C.char)(unsafe.Pointer(&p[0]))
+	C.Log(cstr)
+	return len(p), nil
+}

build/gobind-yggdrasil/platform_other.go

@@ -0,0 +1,12 @@
+// +build !ios
+
+package gobind
+
+import "log"
+
+type BindLogger struct{}
+
+func (nsl BindLogger) Write(p []byte) (n int, err error) {
+	log.Println(string(p))
+	return len(p), nil
+}

build/gobind/build.sh

@@ -1,6 +0,0 @@
-#!/bin/sh
-
-gomobile bind -v \
-    -ldflags "-X github.com/yggdrasil-network/yggdrasil-go/src/version.buildName=dendrite" \
-    -target ios \
-    github.com/matrix-org/dendrite/build/gobind

clientapi/routing/createroom.go

@@ -217,7 +217,8 @@ func createRoom(
 		roomAlias = fmt.Sprintf("#%s:%s", r.RoomAliasName, cfg.Matrix.ServerName)
 		// check it's free TODO: This races but is better than nothing
 		hasAliasReq := roomserverAPI.GetRoomIDForAliasRequest{
-			Alias: roomAlias,
+			Alias:              roomAlias,
+			IncludeAppservices: false,
 		}
 
 		var aliasResp roomserverAPI.GetRoomIDForAliasResponse

clientapi/routing/directory.go

@@ -61,9 +61,12 @@ func DirectoryRoom(
 	var res roomDirectoryResponse
 
 	// Query the roomserver API to check if the alias exists locally.
-	queryReq := roomserverAPI.GetRoomIDForAliasRequest{Alias: roomAlias}
-	var queryRes roomserverAPI.GetRoomIDForAliasResponse
-	if err = rsAPI.GetRoomIDForAlias(req.Context(), &queryReq, &queryRes); err != nil {
+	queryReq := &roomserverAPI.GetRoomIDForAliasRequest{
+		Alias:              roomAlias,
+		IncludeAppservices: true,
+	}
+	queryRes := &roomserverAPI.GetRoomIDForAliasResponse{}
+	if err = rsAPI.GetRoomIDForAlias(req.Context(), queryReq, queryRes); err != nil {
 		util.GetLogger(req.Context()).WithError(err).Error("rsAPI.GetRoomIDForAlias failed")
 		return jsonerror.InternalServerError()
 	}

clientapi/routing/getevent.go

@@ -103,8 +103,22 @@ func GetEvent(
 		}
 	}
 
+	var appService *config.ApplicationService
+	if device.AppserviceID != "" {
+		for _, as := range cfg.Derived.ApplicationServices {
+			if as.ID == device.AppserviceID {
+				appService = &as
+				break
+			}
+		}
+	}
+
 	for _, stateEvent := range stateResp.StateEvents {
-		if !stateEvent.StateKeyEquals(device.UserID) {
+		if appService != nil {
+			if !appService.IsInterestedInUserID(*stateEvent.StateKey()) {
+				continue
+			}
+		} else if !stateEvent.StateKeyEquals(device.UserID) {
 			continue
 		}
 		membership, err := stateEvent.Membership()

clientapi/routing/openid.go

@@ -0,0 +1,70 @@
+// Copyright 2021 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 routing
+
+import (
+	"net/http"
+
+	"github.com/matrix-org/dendrite/clientapi/jsonerror"
+	"github.com/matrix-org/dendrite/setup/config"
+	"github.com/matrix-org/dendrite/userapi/api"
+	"github.com/matrix-org/util"
+)
+
+type openIDTokenResponse struct {
+	AccessToken      string `json:"access_token"`
+	TokenType        string `json:"token_type"`
+	MatrixServerName string `json:"matrix_server_name"`
+	ExpiresIn        int64  `json:"expires_in"`
+}
+
+// CreateOpenIDToken creates a new OpenID Connect (OIDC) token that a Matrix user
+// can supply to an OpenID Relying Party to verify their identity
+func CreateOpenIDToken(
+	req *http.Request,
+	userAPI api.UserInternalAPI,
+	device *api.Device,
+	userID string,
+	cfg *config.ClientAPI,
+) util.JSONResponse {
+	// does the incoming user ID match the user that the token was issued for?
+	if userID != device.UserID {
+		return util.JSONResponse{
+			Code: http.StatusForbidden,
+			JSON: jsonerror.Forbidden("Cannot request tokens for other users"),
+		}
+	}
+
+	request := api.PerformOpenIDTokenCreationRequest{
+		UserID: userID, // this is the user ID from the incoming path
+	}
+	response := api.PerformOpenIDTokenCreationResponse{}
+
+	err := userAPI.PerformOpenIDTokenCreation(req.Context(), &request, &response)
+	if err != nil {
+		util.GetLogger(req.Context()).WithError(err).Error("userAPI.CreateOpenIDToken failed")
+		return jsonerror.InternalServerError()
+	}
+
+	return util.JSONResponse{
+		Code: http.StatusOK,
+		JSON: openIDTokenResponse{
+			AccessToken:      response.Token.Token,
+			TokenType:        "Bearer",
+			MatrixServerName: string(cfg.Matrix.ServerName),
+			ExpiresIn:        response.Token.ExpiresAtMS / 1000, // convert ms to s
+		},
+	}
+}

clientapi/routing/profile.go

@@ -91,7 +91,6 @@ func GetAvatarURL(
 }
 
 // SetAvatarURL implements PUT /profile/{userID}/avatar_url
-// nolint:gocyclo
 func SetAvatarURL(
 	req *http.Request, accountDB accounts.Database,
 	device *userapi.Device, userID string, cfg *config.ClientAPI, rsAPI api.RoomserverInternalAPI,
@@ -209,7 +208,6 @@ func GetDisplayName(
 }
 
 // SetDisplayName implements PUT /profile/{userID}/displayname
-// nolint:gocyclo
 func SetDisplayName(
 	req *http.Request, accountDB accounts.Database,
 	device *userapi.Device, userID string, cfg *config.ClientAPI, rsAPI api.RoomserverInternalAPI,

clientapi/routing/register.go

@@ -161,15 +161,6 @@ type userInteractiveResponse struct {
 	Session   string                 `json:"session"`
 }
 
-// legacyRegisterRequest represents the submitted registration request for v1 API.
-type legacyRegisterRequest struct {
-	Password string                      `json:"password"`
-	Username string                      `json:"user"`
-	Admin    bool                        `json:"admin"`
-	Type     authtypes.LoginType         `json:"type"`
-	Mac      gomatrixserverlib.HexString `json:"mac"`
-}
-
 // newUserInteractiveResponse will return a struct to be sent back to the client
 // during registration.
 func newUserInteractiveResponse(
@@ -496,11 +487,32 @@ func Register(
 		r.Username = strconv.FormatInt(id, 10)
 	}
 
+	// Is this an appservice registration? It will be if the access
+	// token is supplied
+	accessToken, accessTokenErr := auth.ExtractAccessToken(req)
+
 	// Squash username to all lowercase letters
 	r.Username = strings.ToLower(r.Username)
-
-	if resErr = validateUsername(r.Username); resErr != nil {
-		return *resErr
+	switch {
+	case r.Type == authtypes.LoginTypeApplicationService && accessTokenErr == nil:
+		// Spec-compliant case (the access_token is specified and the login type
+		// is correctly set, so it's an appservice registration)
+		if resErr = validateApplicationServiceUsername(r.Username); resErr != nil {
+			return *resErr
+		}
+	case accessTokenErr == nil:
+		// Non-spec-compliant case (the access_token is specified but the login
+		// type is not known or specified)
+		return util.JSONResponse{
+			Code: http.StatusBadRequest,
+			JSON: jsonerror.MissingArgument("A known registration type (e.g. m.login.application_service) must be specified if an access_token is provided"),
+		}
+	default:
+		// Spec-compliant case (neither the access_token nor the login type are
+		// specified, so it's a normal user registration)
+		if resErr = validateUsername(r.Username); resErr != nil {
+			return *resErr
+		}
 	}
 	if resErr = validatePassword(r.Password); resErr != nil {
 		return *resErr
@@ -513,7 +525,7 @@ func Register(
 		"session_id": r.Auth.Session,
 	}).Info("Processing registration request")
 
-	return handleRegistrationFlow(req, r, sessionID, cfg, userAPI)
+	return handleRegistrationFlow(req, r, sessionID, cfg, userAPI, accessToken, accessTokenErr)
 }
 
 func handleGuestRegistration(
@@ -579,6 +591,8 @@ func handleRegistrationFlow(
 	sessionID string,
 	cfg *config.ClientAPI,
 	userAPI userapi.UserInternalAPI,
+	accessToken string,
+	accessTokenErr error,
 ) util.JSONResponse {
 	// TODO: Shared secret registration (create new user scripts)
 	// TODO: Enable registration config flag
@@ -588,19 +602,22 @@ func handleRegistrationFlow(
 	// TODO: Handle mapping registrationRequest parameters into session parameters
 
 	// TODO: email / msisdn auth types.
-	accessToken, accessTokenErr := auth.ExtractAccessToken(req)
 
 	// Appservices are special and are not affected by disabled
-	// registration or user exclusivity.
-	if r.Auth.Type == authtypes.LoginTypeApplicationService ||
-		(r.Auth.Type == "" && accessTokenErr == nil) {
+	// registration or user exclusivity. We'll go onto the appservice
+	// registration flow if a valid access token was provided or if
+	// the login type specifically requests it.
+	if r.Type == authtypes.LoginTypeApplicationService && accessTokenErr == nil {
 		return handleApplicationServiceRegistration(
 			accessToken, accessTokenErr, req, r, cfg, userAPI,
 		)
 	}
 
 	if cfg.RegistrationDisabled && r.Auth.Type != authtypes.LoginTypeSharedSecret {
-		return util.MessageResponse(http.StatusForbidden, "Registration has been disabled")
+		return util.JSONResponse{
+			Code: http.StatusForbidden,
+			JSON: jsonerror.Forbidden("Registration is disabled"),
+		}
 	}
 
 	// Make sure normal user isn't registering under an exclusive application
@@ -734,85 +751,6 @@ func checkAndCompleteFlow(
 	}
 }
 
-// LegacyRegister process register requests from the legacy v1 API
-func LegacyRegister(
-	req *http.Request,
-	userAPI userapi.UserInternalAPI,
-	cfg *config.ClientAPI,
-) util.JSONResponse {
-	var r legacyRegisterRequest
-	resErr := parseAndValidateLegacyLogin(req, &r)
-	if resErr != nil {
-		return *resErr
-	}
-
-	logger := util.GetLogger(req.Context())
-	logger.WithFields(log.Fields{
-		"username":  r.Username,
-		"auth.type": r.Type,
-	}).Info("Processing registration request")
-
-	if cfg.RegistrationDisabled && r.Type != authtypes.LoginTypeSharedSecret {
-		return util.MessageResponse(http.StatusForbidden, "Registration has been disabled")
-	}
-
-	switch r.Type {
-	case authtypes.LoginTypeSharedSecret:
-		if cfg.RegistrationSharedSecret == "" {
-			return util.MessageResponse(http.StatusBadRequest, "Shared secret registration is disabled")
-		}
-
-		valid, err := isValidMacLogin(cfg, r.Username, r.Password, r.Admin, r.Mac)
-		if err != nil {
-			util.GetLogger(req.Context()).WithError(err).Error("isValidMacLogin failed")
-			return jsonerror.InternalServerError()
-		}
-
-		if !valid {
-			return util.MessageResponse(http.StatusForbidden, "HMAC incorrect")
-		}
-
-		return completeRegistration(req.Context(), userAPI, r.Username, r.Password, "", req.RemoteAddr, req.UserAgent(), false, nil, nil)
-	case authtypes.LoginTypeDummy:
-		// there is nothing to do
-		return completeRegistration(req.Context(), userAPI, r.Username, r.Password, "", req.RemoteAddr, req.UserAgent(), false, nil, nil)
-	default:
-		return util.JSONResponse{
-			Code: http.StatusNotImplemented,
-			JSON: jsonerror.Unknown("unknown/unimplemented auth type"),
-		}
-	}
-}
-
-// parseAndValidateLegacyLogin parses the request into r and checks that the
-// request is valid (e.g. valid user names, etc)
-func parseAndValidateLegacyLogin(req *http.Request, r *legacyRegisterRequest) *util.JSONResponse {
-	resErr := httputil.UnmarshalJSONRequest(req, &r)
-	if resErr != nil {
-		return resErr
-	}
-
-	// Squash username to all lowercase letters
-	r.Username = strings.ToLower(r.Username)
-
-	if resErr = validateUsername(r.Username); resErr != nil {
-		return resErr
-	}
-	if resErr = validatePassword(r.Password); resErr != nil {
-		return resErr
-	}
-
-	// All registration requests must specify what auth they are using to perform this request
-	if r.Type == "" {
-		return &util.JSONResponse{
-			Code: http.StatusBadRequest,
-			JSON: jsonerror.BadJSON("invalid type"),
-		}
-	}
-
-	return nil
-}
-
 // completeRegistration runs some rudimentary checks against the submitted
 // input, then if successful creates an account and a newly associated device
 // We pass in each individual part of the request here instead of just passing a

clientapi/routing/routing.go

@@ -89,7 +89,6 @@ func Setup(
 	).Methods(http.MethodGet, http.MethodOptions)
 
 	r0mux := publicAPIMux.PathPrefix("/r0").Subrouter()
-	v1mux := publicAPIMux.PathPrefix("/api/v1").Subrouter()
 	unstableMux := publicAPIMux.PathPrefix("/unstable").Subrouter()
 
 	r0mux.Handle("/createRoom",
@@ -306,13 +305,6 @@ func Setup(
 		return Register(req, userAPI, accountDB, cfg)
 	})).Methods(http.MethodPost, http.MethodOptions)
 
-	v1mux.Handle("/register", httputil.MakeExternalAPI("register", func(req *http.Request) util.JSONResponse {
-		if r := rateLimits.rateLimit(req); r != nil {
-			return *r
-		}
-		return LegacyRegister(req, userAPI, cfg)
-	})).Methods(http.MethodPost, http.MethodOptions)
-
 	r0mux.Handle("/register/available", httputil.MakeExternalAPI("registerAvailable", func(req *http.Request) util.JSONResponse {
 		if r := rateLimits.rateLimit(req); r != nil {
 			return *r
@@ -469,7 +461,7 @@ func Setup(
 		}),
 	).Methods(http.MethodPost, http.MethodOptions)
 
-	// Stub endpoints required by Riot
+	// Stub endpoints required by Element
 
 	r0mux.Handle("/login",
 		httputil.MakeExternalAPI("login", func(req *http.Request) util.JSONResponse {
@@ -506,7 +498,7 @@ func Setup(
 		}),
 	).Methods(http.MethodGet, http.MethodOptions)
 
-	// Riot user settings
+	// Element user settings
 
 	r0mux.Handle("/profile/{userID}",
 		httputil.MakeExternalAPI("profile", func(req *http.Request) util.JSONResponse {
@@ -592,7 +584,7 @@ func Setup(
 		}),
 	).Methods(http.MethodPost, http.MethodOptions)
 
-	// Riot logs get flooded unless this is handled
+	// Element logs get flooded unless this is handled
 	r0mux.Handle("/presence/{userID}/status",
 		httputil.MakeExternalAPI("presence", func(req *http.Request) util.JSONResponse {
 			if r := rateLimits.rateLimit(req); r != nil {
@@ -685,6 +677,19 @@ func Setup(
 		}),
 	).Methods(http.MethodGet)
 
+	r0mux.Handle("/user/{userID}/openid/request_token",
+		httputil.MakeAuthAPI("openid_request_token", userAPI, func(req *http.Request, device *userapi.Device) util.JSONResponse {
+			if r := rateLimits.rateLimit(req); r != nil {
+				return *r
+			}
+			vars, err := httputil.URLDecodeMapValues(mux.Vars(req))
+			if err != nil {
+				return util.ErrorResponse(err)
+			}
+			return CreateOpenIDToken(req, userAPI, device, vars["userID"], cfg)
+		}),
+	).Methods(http.MethodPost, http.MethodOptions)
+
 	r0mux.Handle("/user_directory/search",
 		httputil.MakeAuthAPI("userdirectory_search", userAPI, func(req *http.Request, device *userapi.Device) util.JSONResponse {
 			if r := rateLimits.rateLimit(req); r != nil {

clientapi/routing/state.go

@@ -161,7 +161,6 @@ func OnIncomingStateRequest(ctx context.Context, device *userapi.Device, rsAPI a
 // state to see if there is an event with that type and state key, if there
 // is then (by default) we return the content, otherwise a 404.
 // If eventFormat=true, sends the whole event else just the content.
-// nolint:gocyclo
 func OnIncomingStateTypeRequest(
 	ctx context.Context, device *userapi.Device, rsAPI api.RoomserverInternalAPI,
 	roomID, evType, stateKey string, eventFormat bool,

cmd/create-account/main.go

@@ -24,6 +24,7 @@ import (
 	"github.com/matrix-org/dendrite/setup/config"
 	"github.com/matrix-org/dendrite/userapi/storage/accounts"
 	"github.com/sirupsen/logrus"
+	"golang.org/x/crypto/bcrypt"
 )
 
 const usage = `Usage: %s
@@ -57,7 +58,7 @@ func main() {
 
 	accountDB, err := accounts.NewDatabase(&config.DatabaseOptions{
 		ConnectionString: cfg.UserAPI.AccountDatabase.ConnectionString,
-	}, cfg.Global.ServerName)
+	}, cfg.Global.ServerName, bcrypt.DefaultCost, cfg.UserAPI.OpenIDTokenLifetimeMS)
 	if err != nil {
 		logrus.Fatalln("Failed to connect to the database:", err.Error())
 	}

cmd/dendrite-demo-pinecone/conn/client.go

@@ -0,0 +1,81 @@
+package conn
+
+import (
+	"fmt"
+	"net"
+	"net/http"
+	"strings"
+
+	"github.com/gorilla/websocket"
+	"github.com/matrix-org/dendrite/setup"
+	"github.com/matrix-org/gomatrixserverlib"
+
+	pineconeRouter "github.com/matrix-org/pinecone/router"
+	pineconeSessions "github.com/matrix-org/pinecone/sessions"
+)
+
+func ConnectToPeer(pRouter *pineconeRouter.Router, peer string) error {
+	var parent net.Conn
+	if strings.HasPrefix(peer, "ws://") || strings.HasPrefix(peer, "wss://") {
+		c, _, err := websocket.DefaultDialer.Dial(peer, nil)
+		if err != nil {
+			return fmt.Errorf("websocket.DefaultDialer.Dial: %w", err)
+		}
+		parent = WrapWebSocketConn(c)
+	} else {
+		var err error
+		parent, err = net.Dial("tcp", peer)
+		if err != nil {
+			return fmt.Errorf("net.Dial: %w", err)
+		}
+	}
+	if parent == nil {
+		return fmt.Errorf("failed to wrap connection")
+	}
+	_, err := pRouter.AuthenticatedConnect(parent, "static", pineconeRouter.PeerTypeRemote)
+	return err
+}
+
+type RoundTripper struct {
+	inner *http.Transport
+}
+
+func (y *RoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
+	req.URL.Scheme = "http"
+	return y.inner.RoundTrip(req)
+}
+
+func createTransport(s *pineconeSessions.Sessions) *http.Transport {
+	tr := &http.Transport{}
+	tr.RegisterProtocol(
+		"matrix", &RoundTripper{
+			inner: &http.Transport{
+				DisableKeepAlives: false,
+				Dial:              s.Dial,
+				DialContext:       s.DialContext,
+				DialTLS:           s.DialTLS,
+				DialTLSContext:    s.DialTLSContext,
+			},
+		},
+	)
+	return tr
+}
+
+func CreateClient(
+	base *setup.BaseDendrite, s *pineconeSessions.Sessions,
+) *gomatrixserverlib.Client {
+	return gomatrixserverlib.NewClient(
+		gomatrixserverlib.WithTransport(createTransport(s)),
+	)
+}
+
+func CreateFederationClient(
+	base *setup.BaseDendrite, s *pineconeSessions.Sessions,
+) *gomatrixserverlib.FederationClient {
+	return gomatrixserverlib.NewFederationClient(
+		base.Cfg.Global.ServerName,
+		base.Cfg.Global.KeyID,
+		base.Cfg.Global.PrivateKey,
+		gomatrixserverlib.WithTransport(createTransport(s)),
+	)
+}

cmd/dendrite-demo-pinecone/conn/ws.go

@@ -0,0 +1,81 @@
+package conn
+
+import (
+	"io"
+	"net"
+	"time"
+
+	"github.com/gorilla/websocket"
+)
+
+func WrapWebSocketConn(c *websocket.Conn) *WebSocketConn {
+	return &WebSocketConn{c: c}
+}
+
+type WebSocketConn struct {
+	r io.Reader
+	c *websocket.Conn
+}
+
+func (c *WebSocketConn) Write(p []byte) (int, error) {
+	err := c.c.WriteMessage(websocket.BinaryMessage, p)
+	if err != nil {
+		return 0, err
+	}
+	return len(p), nil
+}
+
+func (c *WebSocketConn) Read(p []byte) (int, error) {
+	for {
+		if c.r == nil {
+			// Advance to next message.
+			var err error
+			_, c.r, err = c.c.NextReader()
+			if err != nil {
+				return 0, err
+			}
+		}
+		n, err := c.r.Read(p)
+		if err == io.EOF {
+			// At end of message.
+			c.r = nil
+			if n > 0 {
+				return n, nil
+			} else {
+				// No data read, continue to next message.
+				continue
+			}
+		}
+		return n, err
+	}
+}
+
+func (c *WebSocketConn) Close() error {
+	return c.c.Close()
+}
+
+func (c *WebSocketConn) LocalAddr() net.Addr {
+	return c.c.LocalAddr()
+}
+
+func (c *WebSocketConn) RemoteAddr() net.Addr {
+	return c.c.RemoteAddr()
+}
+
+func (c *WebSocketConn) SetDeadline(t time.Time) error {
+	if err := c.SetReadDeadline(t); err != nil {
+		return err
+	}
+	if err := c.SetWriteDeadline(t); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (c *WebSocketConn) SetReadDeadline(t time.Time) error {
+	return c.c.SetReadDeadline(t)
+}
+
+func (c *WebSocketConn) SetWriteDeadline(t time.Time) error {
+	return c.c.SetWriteDeadline(t)
+}

cmd/dendrite-demo-pinecone/embed/embed_other.go

@@ -0,0 +1,9 @@
+// +build !riotweb
+
+package embed
+
+import "github.com/gorilla/mux"
+
+func Embed(_ *mux.Router, _ int, _ string) {
+
+}

cmd/dendrite-demo-pinecone/embed/embed_riotweb.go

@@ -0,0 +1,83 @@
+// +build riotweb
+
+package embed
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"regexp"
+
+	"github.com/gorilla/mux"
+	"github.com/tidwall/sjson"
+)
+
+// From within the Riot Web directory:
+// go run github.com/mjibson/esc -o /path/to/dendrite/internal/embed/fs_riotweb.go -private -pkg embed .
+
+var cssFile = regexp.MustCompile("\\.css$")
+var jsFile = regexp.MustCompile("\\.js$")
+
+type mimeFixingHandler struct {
+	fs http.Handler
+}
+
+func (h mimeFixingHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	ruri := r.RequestURI
+	fmt.Println(ruri)
+	switch {
+	case cssFile.MatchString(ruri):
+		w.Header().Set("Content-Type", "text/css")
+	case jsFile.MatchString(ruri):
+		w.Header().Set("Content-Type", "application/javascript")
+	default:
+	}
+	h.fs.ServeHTTP(w, r)
+}
+
+func Embed(rootMux *mux.Router, listenPort int, serverName string) {
+	embeddedFS := _escFS(false)
+	embeddedServ := mimeFixingHandler{http.FileServer(embeddedFS)}
+
+	rootMux.NotFoundHandler = embeddedServ
+	rootMux.HandleFunc("/config.json", func(w http.ResponseWriter, r *http.Request) {
+		url := fmt.Sprintf("http://%s:%d", r.Header("Host"), listenPort)
+		configFile, err := embeddedFS.Open("/config.sample.json")
+		if err != nil {
+			w.WriteHeader(500)
+			io.WriteString(w, "Couldn't open the file: "+err.Error())
+			return
+		}
+		configFileInfo, err := configFile.Stat()
+		if err != nil {
+			w.WriteHeader(500)
+			io.WriteString(w, "Couldn't stat the file: "+err.Error())
+			return
+		}
+		buf := make([]byte, configFileInfo.Size())
+		n, err := configFile.Read(buf)
+		if err != nil {
+			w.WriteHeader(500)
+			io.WriteString(w, "Couldn't read the file: "+err.Error())
+			return
+		}
+		if int64(n) != configFileInfo.Size() {
+			w.WriteHeader(500)
+			io.WriteString(w, "The returned file size didn't match what we expected")
+			return
+		}
+		js, _ := sjson.SetBytes(buf, "default_server_config.m\\.homeserver.base_url", url)
+		js, _ = sjson.SetBytes(js, "default_server_config.m\\.homeserver.server_name", serverName)
+		js, _ = sjson.SetBytes(js, "brand", fmt.Sprintf("Riot %s", serverName))
+		js, _ = sjson.SetBytes(js, "disable_guests", true)
+		js, _ = sjson.SetBytes(js, "disable_3pid_login", true)
+		js, _ = sjson.DeleteBytes(js, "welcomeUserId")
+		_, _ = w.Write(js)
+	})
+
+	fmt.Println("*-------------------------------*")
+	fmt.Println("| This build includes Riot Web! |")
+	fmt.Println("*-------------------------------*")
+	fmt.Println("Point your browser to:", url)
+	fmt.Println()
+}

cmd/dendrite-demo-pinecone/main.go

@@ -0,0 +1,279 @@
+// 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 main
+
+import (
+	"context"
+	"crypto/ed25519"
+	"crypto/tls"
+	"encoding/hex"
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"math"
+	"net"
+	"net/http"
+	"os"
+	"time"
+
+	"github.com/gorilla/mux"
+	"github.com/gorilla/websocket"
+	"github.com/matrix-org/dendrite/appservice"
+	"github.com/matrix-org/dendrite/cmd/dendrite-demo-pinecone/conn"
+	"github.com/matrix-org/dendrite/cmd/dendrite-demo-pinecone/embed"
+	"github.com/matrix-org/dendrite/cmd/dendrite-demo-pinecone/rooms"
+	"github.com/matrix-org/dendrite/cmd/dendrite-demo-yggdrasil/signing"
+	"github.com/matrix-org/dendrite/eduserver"
+	"github.com/matrix-org/dendrite/eduserver/cache"
+	"github.com/matrix-org/dendrite/federationsender"
+	"github.com/matrix-org/dendrite/federationsender/api"
+	"github.com/matrix-org/dendrite/internal"
+	"github.com/matrix-org/dendrite/internal/httputil"
+	"github.com/matrix-org/dendrite/keyserver"
+	"github.com/matrix-org/dendrite/roomserver"
+	"github.com/matrix-org/dendrite/setup"
+	"github.com/matrix-org/dendrite/setup/config"
+	"github.com/matrix-org/dendrite/userapi"
+	"github.com/matrix-org/gomatrixserverlib"
+	"go.uber.org/atomic"
+
+	pineconeMulticast "github.com/matrix-org/pinecone/multicast"
+	pineconeRouter "github.com/matrix-org/pinecone/router"
+	pineconeSessions "github.com/matrix-org/pinecone/sessions"
+	pineconeTypes "github.com/matrix-org/pinecone/types"
+
+	"github.com/sirupsen/logrus"
+)
+
+var (
+	instanceName   = flag.String("name", "dendrite-p2p-pinecone", "the name of this P2P demo instance")
+	instancePort   = flag.Int("port", 8008, "the port that the client API will listen on")
+	instancePeer   = flag.String("peer", "", "the static Pinecone peer to connect to")
+	instanceListen = flag.String("listen", ":0", "the port Pinecone peers can connect to")
+)
+
+// nolint:gocyclo
+func main() {
+	flag.Parse()
+	internal.SetupPprof()
+
+	var pk ed25519.PublicKey
+	var sk ed25519.PrivateKey
+
+	keyfile := *instanceName + ".key"
+	if _, err := os.Stat(keyfile); os.IsNotExist(err) {
+		if pk, sk, err = ed25519.GenerateKey(nil); err != nil {
+			panic(err)
+		}
+		if err = ioutil.WriteFile(keyfile, sk, 0644); err != nil {
+			panic(err)
+		}
+	} else if err == nil {
+		if sk, err = ioutil.ReadFile(keyfile); err != nil {
+			panic(err)
+		}
+		if len(sk) != ed25519.PrivateKeySize {
+			panic("the private key is not long enough")
+		}
+		pk = sk.Public().(ed25519.PublicKey)
+	}
+
+	logger := log.New(os.Stdout, "", 0)
+	pRouter := pineconeRouter.NewRouter(logger, "dendrite", sk, pk, nil)
+
+	go func() {
+		listener, err := net.Listen("tcp", *instanceListen)
+		if err != nil {
+			panic(err)
+		}
+
+		fmt.Println("Listening on", listener.Addr())
+
+		for {
+			conn, err := listener.Accept()
+			if err != nil {
+				logrus.WithError(err).Error("listener.Accept failed")
+				continue
+			}
+
+			port, err := pRouter.AuthenticatedConnect(conn, "", pineconeRouter.PeerTypeRemote)
+			if err != nil {
+				logrus.WithError(err).Error("pSwitch.AuthenticatedConnect failed")
+				continue
+			}
+
+			fmt.Println("Inbound connection", conn.RemoteAddr(), "is connected to port", port)
+		}
+	}()
+
+	pQUIC := pineconeSessions.NewSessions(logger, pRouter)
+	pMulticast := pineconeMulticast.NewMulticast(logger, pRouter)
+	pMulticast.Start()
+
+	var staticPeerAttempts atomic.Uint32
+	var connectToStaticPeer func()
+	connectToStaticPeer = func() {
+		uri := *instancePeer
+		if uri == "" {
+			return
+		}
+		if err := conn.ConnectToPeer(pRouter, uri); err != nil {
+			exp := time.Second * time.Duration(math.Exp2(float64(staticPeerAttempts.Inc())))
+			time.AfterFunc(exp, connectToStaticPeer)
+		} else {
+			staticPeerAttempts.Store(0)
+		}
+	}
+	pRouter.SetDisconnectedCallback(func(port pineconeTypes.SwitchPortID, public pineconeTypes.PublicKey, peertype int, err error) {
+		if peertype == pineconeRouter.PeerTypeRemote && err != nil {
+			staticPeerAttempts.Store(0)
+			time.AfterFunc(time.Second, connectToStaticPeer)
+		}
+	})
+	go connectToStaticPeer()
+
+	cfg := &config.Dendrite{}
+	cfg.Defaults()
+	cfg.Global.ServerName = gomatrixserverlib.ServerName(hex.EncodeToString(pk))
+	cfg.Global.PrivateKey = sk
+	cfg.Global.KeyID = gomatrixserverlib.KeyID(signing.KeyID)
+	cfg.Global.Kafka.UseNaffka = true
+	cfg.UserAPI.AccountDatabase.ConnectionString = config.DataSource(fmt.Sprintf("file:%s-account.db", *instanceName))
+	cfg.UserAPI.DeviceDatabase.ConnectionString = config.DataSource(fmt.Sprintf("file:%s-device.db", *instanceName))
+	cfg.MediaAPI.Database.ConnectionString = config.DataSource(fmt.Sprintf("file:%s-mediaapi.db", *instanceName))
+	cfg.SyncAPI.Database.ConnectionString = config.DataSource(fmt.Sprintf("file:%s-syncapi.db", *instanceName))
+	cfg.RoomServer.Database.ConnectionString = config.DataSource(fmt.Sprintf("file:%s-roomserver.db", *instanceName))
+	cfg.SigningKeyServer.Database.ConnectionString = config.DataSource(fmt.Sprintf("file:%s-signingkeyserver.db", *instanceName))
+	cfg.KeyServer.Database.ConnectionString = config.DataSource(fmt.Sprintf("file:%s-keyserver.db", *instanceName))
+	cfg.FederationSender.Database.ConnectionString = config.DataSource(fmt.Sprintf("file:%s-federationsender.db", *instanceName))
+	cfg.AppServiceAPI.Database.ConnectionString = config.DataSource(fmt.Sprintf("file:%s-appservice.db", *instanceName))
+	cfg.Global.Kafka.Database.ConnectionString = config.DataSource(fmt.Sprintf("file:%s-naffka.db", *instanceName))
+	if err := cfg.Derive(); err != nil {
+		panic(err)
+	}
+
+	base := setup.NewBaseDendrite(cfg, "Monolith", false)
+	defer base.Close() // nolint: errcheck
+
+	accountDB := base.CreateAccountsDB()
+	federation := conn.CreateFederationClient(base, pQUIC)
+
+	serverKeyAPI := &signing.YggdrasilKeys{}
+	keyRing := serverKeyAPI.KeyRing()
+
+	rsComponent := roomserver.NewInternalAPI(
+		base, keyRing,
+	)
+	rsAPI := rsComponent
+	fsAPI := federationsender.NewInternalAPI(
+		base, federation, rsAPI, keyRing,
+	)
+
+	keyAPI := keyserver.NewInternalAPI(&base.Cfg.KeyServer, fsAPI)
+	userAPI := userapi.NewInternalAPI(accountDB, &cfg.UserAPI, nil, keyAPI)
+	keyAPI.SetUserAPI(userAPI)
+
+	eduInputAPI := eduserver.NewInternalAPI(
+		base, cache.New(), userAPI,
+	)
+
+	asAPI := appservice.NewInternalAPI(base, userAPI, rsAPI)
+
+	rsComponent.SetFederationSenderAPI(fsAPI)
+
+	monolith := setup.Monolith{
+		Config:    base.Cfg,
+		AccountDB: accountDB,
+		Client:    conn.CreateClient(base, pQUIC),
+		FedClient: federation,
+		KeyRing:   keyRing,
+
+		AppserviceAPI:          asAPI,
+		EDUInternalAPI:         eduInputAPI,
+		FederationSenderAPI:    fsAPI,
+		RoomserverAPI:          rsAPI,
+		UserAPI:                userAPI,
+		KeyAPI:                 keyAPI,
+		ExtPublicRoomsProvider: rooms.NewPineconeRoomProvider(pRouter, pQUIC, fsAPI, federation),
+	}
+	monolith.AddAllPublicRoutes(
+		base.ProcessContext,
+		base.PublicClientAPIMux,
+		base.PublicFederationAPIMux,
+		base.PublicKeyAPIMux,
+		base.PublicMediaAPIMux,
+	)
+
+	wsUpgrader := websocket.Upgrader{}
+	httpRouter := mux.NewRouter().SkipClean(true).UseEncodedPath()
+	httpRouter.PathPrefix(httputil.InternalPathPrefix).Handler(base.InternalAPIMux)
+	httpRouter.PathPrefix(httputil.PublicClientPathPrefix).Handler(base.PublicClientAPIMux)
+	httpRouter.PathPrefix(httputil.PublicMediaPathPrefix).Handler(base.PublicMediaAPIMux)
+	httpRouter.HandleFunc("/ws", func(w http.ResponseWriter, r *http.Request) {
+		c, err := wsUpgrader.Upgrade(w, r, nil)
+		if err != nil {
+			logrus.WithError(err).Error("Failed to upgrade WebSocket connection")
+			return
+		}
+		conn := conn.WrapWebSocketConn(c)
+		if _, err = pRouter.AuthenticatedConnect(conn, "websocket", pineconeRouter.PeerTypeRemote); err != nil {
+			logrus.WithError(err).Error("Failed to connect WebSocket peer to Pinecone switch")
+		}
+	})
+	embed.Embed(httpRouter, *instancePort, "Pinecone Demo")
+
+	pMux := mux.NewRouter().SkipClean(true).UseEncodedPath()
+	pMux.PathPrefix(httputil.PublicFederationPathPrefix).Handler(base.PublicFederationAPIMux)
+	pMux.PathPrefix(httputil.PublicMediaPathPrefix).Handler(base.PublicMediaAPIMux)
+
+	pHTTP := pQUIC.HTTP()
+	pHTTP.Mux().Handle(httputil.PublicFederationPathPrefix, pMux)
+	pHTTP.Mux().Handle(httputil.PublicMediaPathPrefix, pMux)
+
+	// Build both ends of a HTTP multiplex.
+	httpServer := &http.Server{
+		Addr:         ":0",
+		TLSNextProto: map[string]func(*http.Server, *tls.Conn, http.Handler){},
+		ReadTimeout:  10 * time.Second,
+		WriteTimeout: 10 * time.Second,
+		IdleTimeout:  60 * time.Second,
+		BaseContext: func(_ net.Listener) context.Context {
+			return context.Background()
+		},
+		Handler: pMux,
+	}
+
+	go func() {
+		pubkey := pRouter.PublicKey()
+		logrus.Info("Listening on ", hex.EncodeToString(pubkey[:]))
+		logrus.Fatal(httpServer.Serve(pQUIC))
+	}()
+	go func() {
+		httpBindAddr := fmt.Sprintf(":%d", *instancePort)
+		logrus.Info("Listening on ", httpBindAddr)
+		logrus.Fatal(http.ListenAndServe(httpBindAddr, httpRouter))
+	}()
+	go func() {
+		logrus.Info("Sending wake-up message to known nodes")
+		req := &api.PerformBroadcastEDURequest{}
+		res := &api.PerformBroadcastEDUResponse{}
+		if err := fsAPI.PerformBroadcastEDU(context.TODO(), req, res); err != nil {
+			logrus.WithError(err).Error("Failed to send wake-up message to known nodes")
+		}
+	}()
+
+	base.WaitForShutdown()
+}

cmd/dendrite-demo-pinecone/rooms/rooms.go

@@ -0,0 +1,117 @@
+// 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 rooms
+
+import (
+	"context"
+	"sync"
+	"time"
+
+	"github.com/matrix-org/dendrite/federationsender/api"
+	"github.com/matrix-org/gomatrixserverlib"
+	"github.com/matrix-org/util"
+
+	pineconeRouter "github.com/matrix-org/pinecone/router"
+	pineconeSessions "github.com/matrix-org/pinecone/sessions"
+)
+
+type PineconeRoomProvider struct {
+	r         *pineconeRouter.Router
+	s         *pineconeSessions.Sessions
+	fedSender api.FederationSenderInternalAPI
+	fedClient *gomatrixserverlib.FederationClient
+}
+
+func NewPineconeRoomProvider(
+	r *pineconeRouter.Router,
+	s *pineconeSessions.Sessions,
+	fedSender api.FederationSenderInternalAPI,
+	fedClient *gomatrixserverlib.FederationClient,
+) *PineconeRoomProvider {
+	p := &PineconeRoomProvider{
+		r:         r,
+		s:         s,
+		fedSender: fedSender,
+		fedClient: fedClient,
+	}
+	return p
+}
+
+func (p *PineconeRoomProvider) Rooms() []gomatrixserverlib.PublicRoom {
+	known := p.r.KnownNodes()
+	//known = append(known, p.s.Sessions()...)
+	list := []gomatrixserverlib.ServerName{}
+	for _, k := range known {
+		list = append(list, gomatrixserverlib.ServerName(k.String()))
+	}
+	return bulkFetchPublicRoomsFromServers(context.Background(), p.fedClient, list)
+}
+
+// bulkFetchPublicRoomsFromServers fetches public rooms from the list of homeservers.
+// Returns a list of public rooms.
+func bulkFetchPublicRoomsFromServers(
+	ctx context.Context, fedClient *gomatrixserverlib.FederationClient,
+	homeservers []gomatrixserverlib.ServerName,
+) (publicRooms []gomatrixserverlib.PublicRoom) {
+	limit := 200
+	// follow pipeline semantics, see https://blog.golang.org/pipelines for more info.
+	// goroutines send rooms to this channel
+	roomCh := make(chan gomatrixserverlib.PublicRoom, int(limit))
+	// signalling channel to tell goroutines to stop sending rooms and quit
+	done := make(chan bool)
+	// signalling to say when we can close the room channel
+	var wg sync.WaitGroup
+	wg.Add(len(homeservers))
+	// concurrently query for public rooms
+	reqctx, reqcancel := context.WithTimeout(ctx, time.Second*5)
+	for _, hs := range homeservers {
+		go func(homeserverDomain gomatrixserverlib.ServerName) {
+			defer wg.Done()
+			util.GetLogger(reqctx).WithField("hs", homeserverDomain).Info("Querying HS for public rooms")
+			fres, err := fedClient.GetPublicRooms(reqctx, homeserverDomain, int(limit), "", false, "")
+			if err != nil {
+				util.GetLogger(reqctx).WithError(err).WithField("hs", homeserverDomain).Warn(
+					"bulkFetchPublicRoomsFromServers: failed to query hs",
+				)
+				return
+			}
+			for _, room := range fres.Chunk {
+				// atomically send a room or stop
+				select {
+				case roomCh <- room:
+				case <-done:
+				case <-reqctx.Done():
+					util.GetLogger(reqctx).WithError(err).WithField("hs", homeserverDomain).Info("Interrupted whilst sending rooms")
+					return
+				}
+			}
+		}(hs)
+	}
+
+	select {
+	case <-time.After(5 * time.Second):
+	default:
+		wg.Wait()
+	}
+	reqcancel()
+	close(done)
+	close(roomCh)
+
+	for room := range roomCh {
+		publicRooms = append(publicRooms, room)
+	}
+
+	return publicRooms
+}

cmd/dendrite-demo-yggdrasil/README.md

@@ -1,6 +1,6 @@
 # Yggdrasil Demo
 
-This is the Dendrite Yggdrasil demo! It's easy to get started - all you need is Go 1.13 or later.
+This is the Dendrite Yggdrasil demo! It's easy to get started - all you need is Go 1.14 or later.
 
 To run the homeserver, start at the root of the Dendrite repository and run:
 

cmd/dendrite-demo-yggdrasil/main.go

@@ -52,7 +52,6 @@ var (
 	instancePeer = flag.String("peer", "", "an internet Yggdrasil peer to connect to")
 )
 
-// nolint:gocyclo
 func main() {
 	flag.Parse()
 	internal.SetupPprof()

cmd/dendrite-demo-yggdrasil/yggconn/node.go

@@ -73,7 +73,6 @@ func (n *Node) DialerContext(ctx context.Context, network, address string) (net.
 	return n.Dialer(network, address)
 }
 
-// nolint:gocyclo
 func Setup(instanceName, storageDirectory string) (*Node, error) {
 	n := &Node{
 		core:      &yggdrasil.Core{},

cmd/dendrite-demo-yggdrasil/yggconn/session.go

@@ -128,7 +128,6 @@ func (n *Node) Dial(network, address string) (net.Conn, error) {
 }
 
 // Implements http.Transport.DialContext
-// nolint:gocyclo
 func (n *Node) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
 	s, ok1 := n.sessions.Load(address)
 	session, ok2 := s.(*session)

cmd/furl/main.go

@@ -20,7 +20,6 @@ var requestFrom = flag.String("from", "", "the server name that the request shou
 var requestKey = flag.String("key", "matrix_key.pem", "the private key to use when signing the request")
 var requestPost = flag.Bool("post", false, "send a POST request instead of GET (pipe input into stdin or type followed by Ctrl-D)")
 
-// nolint:gocyclo
 func main() {
 	flag.Parse()
 

cmd/generate-config/main.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 
 	"github.com/matrix-org/dendrite/setup/config"
+	"golang.org/x/crypto/bcrypt"
 	"gopkg.in/yaml.v2"
 )
 
@@ -61,12 +62,14 @@ func main() {
 	}
 
 	if *defaultsForCI {
+		cfg.AppServiceAPI.DisableTLSValidation = true
 		cfg.ClientAPI.RateLimiting.Enabled = false
 		cfg.FederationSender.DisableTLSValidation = true
 		cfg.MSCs.MSCs = []string{"msc2836", "msc2946", "msc2444", "msc2753"}
 		cfg.Logging[0].Level = "trace"
 		// don't hit matrix.org when running tests!!!
 		cfg.SigningKeyServer.KeyPerspectives = config.KeyPerspectives{}
+		cfg.UserAPI.BCryptCost = bcrypt.MinCost
 	}
 
 	j, err := yaml.Marshal(cfg)

cmd/resolve-state/main.go

@@ -24,7 +24,6 @@ import (
 
 var roomVersion = flag.String("roomversion", "5", "the room version to parse events as")
 
-// nolint:gocyclo
 func main() {
 	ctx := context.Background()
 	cfg := setup.ParseFlags(true)

dendrite-config.yaml

@@ -125,6 +125,11 @@ app_service_api:
     max_idle_conns: 2
     conn_max_lifetime: -1
 
+  # Disable the validation of TLS certificates of appservices. This is
+  # not recommended in production since it may allow appservice traffic
+  # to be sent to an unverified endpoint.
+  disable_tls_validation: false
+
   # Appservice configuration files to load into this homeserver.
   config_files: []
 
@@ -235,7 +240,7 @@ media_api:
     listen: http://[::]:8074
   database:
     connection_string: file:mediaapi.db
-    max_open_conns: 10
+    max_open_conns: 5
     max_idle_conns: 2
     conn_max_lifetime: -1
 
@@ -243,7 +248,8 @@ media_api:
   base_path: ./media_store
 
   # The maximum allowed file size (in bytes) for media uploads to this homeserver
-  # (0 = unlimited).
+  # (0 = unlimited). If using a reverse proxy, ensure it allows requests at
+  # least this large (e.g. client_max_body_size in nginx.)
   max_file_size_bytes: 10485760
 
   # Whether to dynamically generate thumbnails if needed.
@@ -273,7 +279,7 @@ mscs:
   mscs: []
   database:
     connection_string: file:mscs.db
-    max_open_conns: 10
+    max_open_conns: 5
     max_idle_conns: 2
     conn_max_lifetime: -1
 
@@ -335,6 +341,13 @@ sync_api:
 
 # Configuration for the User API.
 user_api:
+  # The cost when hashing passwords on registration/login. Default: 10. Min: 4, Max: 31
+  # See https://pkg.go.dev/golang.org/x/crypto/bcrypt for more information.
+  # Setting this lower makes registration/login consume less CPU resources at the cost of security
+  # should the database be compromised. Setting this higher makes registration/login consume more
+  # CPU resources but makes it harder to brute force password hashes.
+  # This value can be low if performing tests or on embedded Dendrite instances (e.g WASM builds)
+  # bcrypt_cost: 10
   internal_api:
     listen: http://localhost:7781
     connect: http://localhost:7781
@@ -348,6 +361,11 @@ user_api:
     max_open_conns: 10
     max_idle_conns: 2
     conn_max_lifetime: -1
+  # The length of time that a token issued for a relying party from 
+  # /_matrix/client/r0/user/{userId}/openid/request_token endpoint
+  # is considered to be valid in milliseconds. 
+  # The default lifetime is 3600000ms (60 minutes).
+  # openid_token_lifetime_ms: 3600000
 
 # Configuration for Opentracing.
 # See https://github.com/matrix-org/dendrite/tree/master/docs/tracing for information on
@@ -371,4 +389,4 @@ logging:
 - type: file
   level: info
   params:
-    path: /var/log/dendrite
+    path: ./logs

docs/INSTALL.md

@@ -25,7 +25,7 @@ use in production environments just yet!
 
 Dendrite requires:
 
-* Go 1.13 or higher
+* Go 1.14 or higher
 * Postgres 9.6 or higher (if using Postgres databases, not needed for SQLite)
 
 If you want to run a polylith deployment, you also need:

federationapi/routing/join.go

@@ -29,7 +29,6 @@ import (
 )
 
 // MakeJoin implements the /make_join API
-// nolint:gocyclo
 func MakeJoin(
 	httpReq *http.Request,
 	request *gomatrixserverlib.FederationRequest,
@@ -161,7 +160,6 @@ func MakeJoin(
 // SendJoin implements the /send_join API
 // The make-join send-join dance makes much more sense as a single
 // flow so the cyclomatic complexity is high:
-// nolint:gocyclo
 func SendJoin(
 	httpReq *http.Request,
 	request *gomatrixserverlib.FederationRequest,

federationapi/routing/leave.go

@@ -25,7 +25,6 @@ import (
 )
 
 // MakeLeave implements the /make_leave API
-// nolint:gocyclo
 func MakeLeave(
 	httpReq *http.Request,
 	request *gomatrixserverlib.FederationRequest,
@@ -118,7 +117,6 @@ func MakeLeave(
 }
 
 // SendLeave implements the /send_leave API
-// nolint:gocyclo
 func SendLeave(
 	httpReq *http.Request,
 	request *gomatrixserverlib.FederationRequest,

federationapi/routing/openid.go

@@ -0,0 +1,65 @@
+// Copyright 2021 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 routing
+
+import (
+	"net/http"
+	"time"
+
+	"github.com/matrix-org/dendrite/clientapi/jsonerror"
+	userapi "github.com/matrix-org/dendrite/userapi/api"
+	"github.com/matrix-org/util"
+)
+
+type openIDUserInfoResponse struct {
+	Sub string `json:"sub"`
+}
+
+// GetOpenIDUserInfo implements GET /_matrix/federation/v1/openid/userinfo
+func GetOpenIDUserInfo(
+	httpReq *http.Request,
+	userAPI userapi.UserInternalAPI,
+) util.JSONResponse {
+	token := httpReq.URL.Query().Get("access_token")
+	if len(token) == 0 {
+		return util.JSONResponse{
+			Code: http.StatusUnauthorized,
+			JSON: jsonerror.MissingArgument("access_token is missing"),
+		}
+	}
+
+	req := userapi.QueryOpenIDTokenRequest{
+		Token: token,
+	}
+
+	var openIDTokenAttrResponse userapi.QueryOpenIDTokenResponse
+	err := userAPI.QueryOpenIDToken(httpReq.Context(), &req, &openIDTokenAttrResponse)
+	if err != nil {
+		util.GetLogger(httpReq.Context()).WithError(err).Error("userAPI.QueryOpenIDToken failed")
+	}
+
+	var res interface{} = openIDUserInfoResponse{Sub: openIDTokenAttrResponse.Sub}
+	code := http.StatusOK
+	nowMS := time.Now().UnixNano() / int64(time.Millisecond)
+	if openIDTokenAttrResponse.Sub == "" || nowMS > openIDTokenAttrResponse.ExpiresAtMS {
+		code = http.StatusUnauthorized
+		res = jsonerror.UnknownToken("Access Token unknown or expired")
+	}
+
+	return util.JSONResponse{
+		Code: code,
+		JSON: res,
+	}
+}

federationapi/routing/publicrooms.go

@@ -111,7 +111,6 @@ func fillPublicRoomsReq(httpReq *http.Request, request *PublicRoomReq) *util.JSO
 }
 
 // due to lots of switches
-// nolint:gocyclo
 func fillInRooms(ctx context.Context, roomIDs []string, rsAPI roomserverAPI.RoomserverInternalAPI) ([]gomatrixserverlib.PublicRoom, error) {
 	avatarTuple := gomatrixserverlib.StateKeyTuple{EventType: "m.room.avatar", StateKey: ""}
 	nameTuple := gomatrixserverlib.StateKeyTuple{EventType: "m.room.name", StateKey: ""}

federationapi/routing/query.go

@@ -53,9 +53,12 @@ func RoomAliasToID(
 	var resp gomatrixserverlib.RespDirectory
 
 	if domain == cfg.Matrix.ServerName {
-		queryReq := roomserverAPI.GetRoomIDForAliasRequest{Alias: roomAlias}
-		var queryRes roomserverAPI.GetRoomIDForAliasResponse
-		if err = rsAPI.GetRoomIDForAlias(httpReq.Context(), &queryReq, &queryRes); err != nil {
+		queryReq := &roomserverAPI.GetRoomIDForAliasRequest{
+			Alias:              roomAlias,
+			IncludeAppservices: true,
+		}
+		queryRes := &roomserverAPI.GetRoomIDForAliasResponse{}
+		if err = rsAPI.GetRoomIDForAlias(httpReq.Context(), queryReq, queryRes); err != nil {
 			util.GetLogger(httpReq.Context()).WithError(err).Error("aliasAPI.GetRoomIDForAlias failed")
 			return jsonerror.InternalServerError()
 		}

federationapi/routing/routing.go

@@ -21,6 +21,7 @@ import (
 	"github.com/matrix-org/dendrite/clientapi/jsonerror"
 	eduserverAPI "github.com/matrix-org/dendrite/eduserver/api"
 	federationSenderAPI "github.com/matrix-org/dendrite/federationsender/api"
+	"github.com/matrix-org/dendrite/internal"
 	"github.com/matrix-org/dendrite/internal/httputil"
 	keyserverAPI "github.com/matrix-org/dendrite/keyserver/api"
 	roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
@@ -92,12 +93,13 @@ func Setup(
 	v2keysmux.Handle("/query", notaryKeys).Methods(http.MethodPost)
 	v2keysmux.Handle("/query/{serverName}/{keyID}", notaryKeys).Methods(http.MethodGet)
 
+	mu := internal.NewMutexByRoom()
 	v1fedmux.Handle("/send/{txnID}", httputil.MakeFedAPI(
 		"federation_send", cfg.Matrix.ServerName, keys, wakeup,
 		func(httpReq *http.Request, request *gomatrixserverlib.FederationRequest, vars map[string]string) util.JSONResponse {
 			return Send(
 				httpReq, request, gomatrixserverlib.TransactionID(vars["txnID"]),
-				cfg, rsAPI, eduAPI, keyAPI, keys, federation,
+				cfg, rsAPI, eduAPI, keyAPI, keys, federation, mu,
 			)
 		},
 	)).Methods(http.MethodPut, http.MethodOptions)
@@ -460,4 +462,10 @@ func Setup(
 			return QueryDeviceKeys(httpReq, request, keyAPI, cfg.Matrix.ServerName)
 		},
 	)).Methods(http.MethodPost)
+
+	v1fedmux.Handle("/openid/userinfo",
+		httputil.MakeExternalAPI("federation_openid_userinfo", func(req *http.Request) util.JSONResponse {
+			return GetOpenIDUserInfo(req, userAPI)
+		}),
+	).Methods(http.MethodGet)
 }

federationapi/routing/send.go

@@ -23,16 +23,71 @@ import (
 	"sync"
 	"time"
 
+	"github.com/getsentry/sentry-go"
 	"github.com/matrix-org/dendrite/clientapi/jsonerror"
 	eduserverAPI "github.com/matrix-org/dendrite/eduserver/api"
+	"github.com/matrix-org/dendrite/internal"
 	keyapi "github.com/matrix-org/dendrite/keyserver/api"
 	"github.com/matrix-org/dendrite/roomserver/api"
 	"github.com/matrix-org/dendrite/setup/config"
 	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/matrix-org/util"
+	"github.com/prometheus/client_golang/prometheus"
 	"github.com/sirupsen/logrus"
 )
 
+const (
+	// Event was passed to the roomserver
+	MetricsOutcomeOK = "ok"
+	// Event failed to be processed
+	MetricsOutcomeFail = "fail"
+	// Event failed auth checks
+	MetricsOutcomeRejected = "rejected"
+	// Terminated the transaction
+	MetricsOutcomeFatal = "fatal"
+	// The event has missing auth_events we need to fetch
+	MetricsWorkMissingAuthEvents = "missing_auth_events"
+	// No work had to be done as we had all prev/auth events
+	MetricsWorkDirect = "direct"
+	// The event has missing prev_events we need to call /g_m_e for
+	MetricsWorkMissingPrevEvents = "missing_prev_events"
+)
+
+var (
+	pduCountTotal = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Namespace: "dendrite",
+			Subsystem: "federationapi",
+			Name:      "recv_pdus",
+			Help:      "Number of incoming PDUs from remote servers with labels for success",
+		},
+		[]string{"status"}, // 'success' or 'total'
+	)
+	eduCountTotal = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Namespace: "dendrite",
+			Subsystem: "federationapi",
+			Name:      "recv_edus",
+			Help:      "Number of incoming EDUs from remote servers",
+		},
+	)
+	processEventSummary = prometheus.NewSummaryVec(
+		prometheus.SummaryOpts{
+			Namespace: "dendrite",
+			Subsystem: "federationapi",
+			Name:      "process_event",
+			Help:      "How long it takes to process an incoming event and what work had to be done for it",
+		},
+		[]string{"work", "outcome"},
+	)
+)
+
+func init() {
+	prometheus.MustRegister(
+		pduCountTotal, eduCountTotal, processEventSummary,
+	)
+}
+
 // Send implements /_matrix/federation/v1/send/{txnID}
 func Send(
 	httpReq *http.Request,
@@ -44,6 +99,7 @@ func Send(
 	keyAPI keyapi.KeyInternalAPI,
 	keys gomatrixserverlib.JSONVerifier,
 	federation *gomatrixserverlib.FederationClient,
+	mu *internal.MutexByRoom,
 ) util.JSONResponse {
 	t := txnReq{
 		rsAPI:      rsAPI,
@@ -53,6 +109,7 @@ func Send(
 		haveEvents: make(map[string]*gomatrixserverlib.HeaderedEvent),
 		newEvents:  make(map[string]bool),
 		keyAPI:     keyAPI,
+		roomsMu:    mu,
 	}
 
 	var txnEvents struct {
@@ -109,12 +166,14 @@ type txnReq struct {
 	federation   txnFederationClient
 	servers      []gomatrixserverlib.ServerName
 	serversMutex sync.RWMutex
+	roomsMu      *internal.MutexByRoom
 	// local cache of events for auth checks, etc - this may include events
 	// which the roomserver is unaware of.
 	haveEvents map[string]*gomatrixserverlib.HeaderedEvent
 	// new events which the roomserver does not know about
 	newEvents      map[string]bool
 	newEventsMutex sync.RWMutex
+	work           string // metrics
 }
 
 // A subset of FederationClient functionality that txn requires. Useful for testing.
@@ -133,6 +192,7 @@ func (t *txnReq) processTransaction(ctx context.Context) (*gomatrixserverlib.Res
 
 	pdus := []*gomatrixserverlib.HeaderedEvent{}
 	for _, pdu := range t.PDUs {
+		pduCountTotal.WithLabelValues("total").Inc()
 		var header struct {
 			RoomID string `json:"room_id"`
 		}
@@ -186,6 +246,7 @@ func (t *txnReq) processTransaction(ctx context.Context) (*gomatrixserverlib.Res
 
 	// Process the events.
 	for _, e := range pdus {
+		evStart := time.Now()
 		if err := t.processEvent(ctx, e.Unwrap()); err != nil {
 			// If the error is due to the event itself being bad then we skip
 			// it and move onto the next event. We report an error so that the
@@ -203,27 +264,40 @@ func (t *txnReq) processTransaction(ctx context.Context) (*gomatrixserverlib.Res
 			// If we bail and stop processing then we risk wedging incoming
 			// transactions from that server forever.
 			if isProcessingErrorFatal(err) {
+				sentry.CaptureException(err)
 				// Any other error should be the result of a temporary error in
 				// our server so we should bail processing the transaction entirely.
 				util.GetLogger(ctx).Warnf("Processing %s failed fatally: %s", e.EventID(), err)
 				jsonErr := util.ErrorResponse(err)
+				processEventSummary.WithLabelValues(t.work, MetricsOutcomeFatal).Observe(
+					float64(time.Since(evStart).Nanoseconds()) / 1000.,
+				)
 				return nil, &jsonErr
 			} else {
 				// Auth errors mean the event is 'rejected' which have to be silent to appease sytest
 				errMsg := ""
+				outcome := MetricsOutcomeRejected
 				_, rejected := err.(*gomatrixserverlib.NotAllowed)
 				if !rejected {
 					errMsg = err.Error()
+					outcome = MetricsOutcomeFail
 				}
 				util.GetLogger(ctx).WithError(err).WithField("event_id", e.EventID()).WithField("rejected", rejected).Warn(
 					"Failed to process incoming federation event, skipping",
 				)
+				processEventSummary.WithLabelValues(t.work, outcome).Observe(
+					float64(time.Since(evStart).Nanoseconds()) / 1000.,
+				)
 				results[e.EventID()] = gomatrixserverlib.PDUResult{
 					Error: errMsg,
 				}
 			}
 		} else {
 			results[e.EventID()] = gomatrixserverlib.PDUResult{}
+			pduCountTotal.WithLabelValues("success").Inc()
+			processEventSummary.WithLabelValues(t.work, MetricsOutcomeOK).Observe(
+				float64(time.Since(evStart).Nanoseconds()) / 1000.,
+			)
 		}
 	}
 
@@ -279,9 +353,9 @@ func (t *txnReq) haveEventIDs() map[string]bool {
 	return result
 }
 
-// nolint:gocyclo
 func (t *txnReq) processEDUs(ctx context.Context) {
 	for _, e := range t.EDUs {
+		eduCountTotal.Inc()
 		switch e.Type {
 		case gomatrixserverlib.MTyping:
 			// https://matrix.org/docs/spec/server_server/latest#typing-notifications
@@ -425,6 +499,7 @@ func (t *txnReq) getServers(ctx context.Context, roomID string) []gomatrixserver
 
 func (t *txnReq) processEvent(ctx context.Context, e *gomatrixserverlib.Event) error {
 	logger := util.GetLogger(ctx).WithField("event_id", e.EventID()).WithField("room_id", e.RoomID())
+	t.work = "" // reset from previous event
 
 	// Work out if the roomserver knows everything it needs to know to auth
 	// the event. This includes the prev_events and auth_events.
@@ -453,6 +528,7 @@ func (t *txnReq) processEvent(ctx context.Context, e *gomatrixserverlib.Event) e
 	}
 
 	if len(stateResp.MissingAuthEventIDs) > 0 {
+		t.work = MetricsWorkMissingAuthEvents
 		logger.Infof("Event refers to %d unknown auth_events", len(stateResp.MissingAuthEventIDs))
 		if err := t.retrieveMissingAuthEvents(ctx, e, &stateResp); err != nil {
 			return fmt.Errorf("t.retrieveMissingAuthEvents: %w", err)
@@ -460,9 +536,11 @@ func (t *txnReq) processEvent(ctx context.Context, e *gomatrixserverlib.Event) e
 	}
 
 	if len(stateResp.MissingPrevEventIDs) > 0 {
+		t.work = MetricsWorkMissingPrevEvents
 		logger.Infof("Event refers to %d unknown prev_events", len(stateResp.MissingPrevEventIDs))
 		return t.processEventWithMissingState(ctx, e, stateResp.RoomVersion)
 	}
+	t.work = MetricsWorkDirect
 
 	// pass the event to the roomserver which will do auth checks
 	// If the event fail auth checks, gmsl.NotAllowed error will be returned which we be silently
@@ -540,8 +618,9 @@ func checkAllowedByState(e *gomatrixserverlib.Event, stateEvents []*gomatrixserv
 	return gomatrixserverlib.Allowed(e, &authUsingState)
 }
 
-// nolint:gocyclo
-func (t *txnReq) processEventWithMissingState(ctx context.Context, e *gomatrixserverlib.Event, roomVersion gomatrixserverlib.RoomVersion) error {
+func (t *txnReq) processEventWithMissingState(
+	ctx context.Context, e *gomatrixserverlib.Event, roomVersion gomatrixserverlib.RoomVersion,
+) error {
 	// Do this with a fresh context, so that we keep working even if the
 	// original request times out. With any luck, by the time the remote
 	// side retries, we'll have fetched the missing state.
@@ -637,7 +716,9 @@ func (t *txnReq) processEventWithMissingState(ctx context.Context, e *gomatrixse
 			respStates[i] = states[i].RespState
 		}
 		// There's more than one previous state - run them all through state res
+		t.roomsMu.Lock(e.RoomID())
 		resolvedState, err = t.resolveStatesAndCheck(gmectx, roomVersion, respStates, backwardsExtremity)
+		t.roomsMu.Unlock(e.RoomID())
 		if err != nil {
 			util.GetLogger(ctx).WithError(err).Errorf("Failed to resolve state conflicts for event %s", backwardsExtremity.EventID())
 			return err
@@ -705,7 +786,7 @@ func (t *txnReq) lookupStateAfterEvent(ctx context.Context, roomVersion gomatrix
 	default:
 		return nil, false, fmt.Errorf("t.lookupEvent: %w", err)
 	}
-	t.haveEvents[h.EventID()] = h
+	t.cacheAndReturn(h)
 	if h.StateKey() != nil {
 		addedToState := false
 		for i := range respState.StateEvents {
@@ -724,6 +805,14 @@ func (t *txnReq) lookupStateAfterEvent(ctx context.Context, roomVersion gomatrix
 	return respState, false, nil
 }
 
+func (t *txnReq) cacheAndReturn(ev *gomatrixserverlib.HeaderedEvent) *gomatrixserverlib.HeaderedEvent {
+	if cached, exists := t.haveEvents[ev.EventID()]; exists {
+		return cached
+	}
+	t.haveEvents[ev.EventID()] = ev
+	return ev
+}
+
 func (t *txnReq) lookupStateAfterEventLocally(ctx context.Context, roomID, eventID string) *gomatrixserverlib.RespState {
 	var res api.QueryStateAfterEventsResponse
 	err := t.rsAPI.QueryStateAfterEvents(ctx, &api.QueryStateAfterEventsRequest{
@@ -731,15 +820,21 @@ func (t *txnReq) lookupStateAfterEventLocally(ctx context.Context, roomID, event
 		PrevEventIDs: []string{eventID},
 	}, &res)
 	if err != nil || !res.PrevEventsExist {
-		util.GetLogger(ctx).WithError(err).Warnf("failed to query state after %s locally", eventID)
+		util.GetLogger(ctx).WithField("room_id", roomID).WithError(err).Warnf("failed to query state after %s locally, prev exists=%v", eventID, res.PrevEventsExist)
 		return nil
 	}
+	stateEvents := make([]*gomatrixserverlib.HeaderedEvent, len(res.StateEvents))
 	for i, ev := range res.StateEvents {
-		t.haveEvents[ev.EventID()] = res.StateEvents[i]
+		// set the event from the haveEvents cache - this means we will share pointers with other prev_event branches for this
+		// processEvent request, which is better for memory.
+		stateEvents[i] = t.cacheAndReturn(ev)
 	}
+	// we should never access res.StateEvents again so we delete it here to make GC faster
+	res.StateEvents = nil
+
 	var authEvents []*gomatrixserverlib.Event
 	missingAuthEvents := map[string]bool{}
-	for _, ev := range res.StateEvents {
+	for _, ev := range stateEvents {
 		for _, ae := range ev.AuthEventIDs() {
 			if aev, ok := t.haveEvents[ae]; ok {
 				authEvents = append(authEvents, aev.Unwrap())
@@ -758,20 +853,19 @@ func (t *txnReq) lookupStateAfterEventLocally(ctx context.Context, roomID, event
 		queryReq := api.QueryEventsByIDRequest{
 			EventIDs: missingEventList,
 		}
-		util.GetLogger(ctx).Infof("Fetching missing auth events: %v", missingEventList)
+		util.GetLogger(ctx).WithField("count", len(missingEventList)).Infof("Fetching missing auth events")
 		var queryRes api.QueryEventsByIDResponse
 		if err = t.rsAPI.QueryEventsByID(ctx, &queryReq, &queryRes); err != nil {
 			return nil
 		}
 		for i := range queryRes.Events {
-			evID := queryRes.Events[i].EventID()
-			t.haveEvents[evID] = queryRes.Events[i]
-			authEvents = append(authEvents, queryRes.Events[i].Unwrap())
+			authEvents = append(authEvents, t.cacheAndReturn(queryRes.Events[i]).Unwrap())
 		}
+		queryRes.Events = nil
 	}
 
 	return &gomatrixserverlib.RespState{
-		StateEvents: gomatrixserverlib.UnwrapEventHeaders(res.StateEvents),
+		StateEvents: gomatrixserverlib.UnwrapEventHeaders(stateEvents),
 		AuthEvents:  authEvents,
 	}
 }
@@ -781,8 +875,6 @@ func (t *txnReq) lookupStateAfterEventLocally(ctx context.Context, roomID, event
 func (t *txnReq) lookupStateBeforeEvent(ctx context.Context, roomVersion gomatrixserverlib.RoomVersion, roomID, eventID string) (
 	*gomatrixserverlib.RespState, error) {
 
-	util.GetLogger(ctx).Infof("lookupStateBeforeEvent %s", eventID)
-
 	// Attempt to fetch the missing state using /state_ids and /events
 	return t.lookupMissingStateViaStateIDs(ctx, roomID, eventID, roomVersion)
 }
@@ -828,11 +920,6 @@ retryAllowedState:
 	}, nil
 }
 
-// getMissingEvents returns a nil backwardsExtremity if missing events were fetched and handled, else returns the new backwards extremity which we should
-// begin from. Returns an error only if we should terminate the transaction which initiated /get_missing_events
-// This function recursively calls txnReq.processEvent with the missing events, which will be processed before this function returns.
-// This means that we may recursively call this function, as we spider back up prev_events.
-// nolint:gocyclo
 func (t *txnReq) getMissingEvents(ctx context.Context, e *gomatrixserverlib.Event, roomVersion gomatrixserverlib.RoomVersion) (newEvents []*gomatrixserverlib.Event, err error) {
 	logger := util.GetLogger(ctx).WithField("event_id", e.EventID()).WithField("room_id", e.RoomID())
 	needed := gomatrixserverlib.StateNeededForAuth([]*gomatrixserverlib.Event{e})
@@ -918,7 +1005,6 @@ Event:
 		}
 	}
 
-	// we processed everything!
 	return newEvents, nil
 }
 
@@ -935,10 +1021,9 @@ func (t *txnReq) lookupMissingStateViaState(ctx context.Context, roomID, eventID
 	return &state, nil
 }
 
-// nolint:gocyclo
 func (t *txnReq) lookupMissingStateViaStateIDs(ctx context.Context, roomID, eventID string, roomVersion gomatrixserverlib.RoomVersion) (
 	*gomatrixserverlib.RespState, error) {
-	util.GetLogger(ctx).Infof("lookupMissingStateViaStateIDs %s", eventID)
+	util.GetLogger(ctx).WithField("room_id", roomID).Infof("lookupMissingStateViaStateIDs %s", eventID)
 	// fetch the state event IDs at the time of the event
 	stateIDs, err := t.federation.LookupStateIDs(ctx, t.Origin, roomID, eventID)
 	if err != nil {
@@ -967,14 +1052,16 @@ func (t *txnReq) lookupMissingStateViaStateIDs(ctx context.Context, roomID, even
 	}
 	for i := range queryRes.Events {
 		evID := queryRes.Events[i].EventID()
-		t.haveEvents[evID] = queryRes.Events[i]
+		t.cacheAndReturn(queryRes.Events[i])
 		if missing[evID] {
 			delete(missing, evID)
 		}
 	}
+	queryRes.Events = nil // allow it to be GCed
 
 	concurrentRequests := 8
 	missingCount := len(missing)
+	util.GetLogger(ctx).WithField("room_id", roomID).WithField("event_id", eventID).Infof("lookupMissingStateViaStateIDs missing %d/%d events", missingCount, len(wantIDs))
 
 	// If over 50% of the auth/state events from /state_ids are missing
 	// then we'll just call /state instead, otherwise we'll just end up
@@ -1039,7 +1126,7 @@ func (t *txnReq) lookupMissingStateViaStateIDs(ctx context.Context, roomID, even
 				return
 			}
 			haveEventsMutex.Lock()
-			t.haveEvents[h.EventID()] = h
+			t.cacheAndReturn(h)
 			haveEventsMutex.Unlock()
 		}
 

federationapi/routing/send_test.go

@@ -9,6 +9,7 @@ import (
 	"time"
 
 	eduAPI "github.com/matrix-org/dendrite/eduserver/api"
+	"github.com/matrix-org/dendrite/internal"
 	"github.com/matrix-org/dendrite/internal/test"
 	"github.com/matrix-org/dendrite/roomserver/api"
 	"github.com/matrix-org/gomatrixserverlib"
@@ -370,6 +371,7 @@ func mustCreateTransaction(rsAPI api.RoomserverInternalAPI, fedClient txnFederat
 		federation: fedClient,
 		haveEvents: make(map[string]*gomatrixserverlib.HeaderedEvent),
 		newEvents:  make(map[string]bool),
+		roomsMu:    internal.NewMutexByRoom(),
 	}
 	t.PDUs = pdus
 	t.Origin = testOrigin

federationsender/consumers/eduserver.go

@@ -212,8 +212,7 @@ func (t *OutputEDUConsumer) onReceiptEvent(msg *sarama.ConsumerMessage) error {
 		return nil
 	}
 	if receiptServerName != t.ServerName {
-		log.WithField("other_server", receiptServerName).Info("Suppressing receipt notif: originated elsewhere")
-		return nil
+		return nil // don't log, very spammy as it logs for each remote receipt
 	}
 
 	joined, err := t.db.GetJoinedHosts(context.TODO(), receipt.RoomID)

federationsender/queue/destinationqueue.go

@@ -173,7 +173,6 @@ func (oq *destinationQueue) wakeQueueIfNeeded() {
 // getPendingFromDatabase will look at the database and see if
 // there are any persisted events that haven't been sent to this
 // destination yet. If so, they will be queued up.
-// nolint:gocyclo
 func (oq *destinationQueue) getPendingFromDatabase() {
 	// Check to see if there's anything to do for this server
 	// in the database.
@@ -238,7 +237,6 @@ func (oq *destinationQueue) getPendingFromDatabase() {
 }
 
 // backgroundSend is the worker goroutine for sending events.
-// nolint:gocyclo
 func (oq *destinationQueue) backgroundSend() {
 	// Check if a worker is already running, and if it isn't, then
 	// mark it as started.
@@ -353,7 +351,6 @@ func (oq *destinationQueue) backgroundSend() {
 // nextTransaction creates a new transaction from the pending event
 // queue and sends it. Returns true if a transaction was sent or
 // false otherwise.
-// nolint:gocyclo
 func (oq *destinationQueue) nextTransaction(
 	pdus []*queuedPDU,
 	edus []*queuedEDU,

federationsender/storage/postgres/joined_hosts_table.go

@@ -48,7 +48,7 @@ CREATE INDEX IF NOT EXISTS federatonsender_joined_hosts_room_id_idx
 
 const insertJoinedHostsSQL = "" +
 	"INSERT INTO federationsender_joined_hosts (room_id, event_id, server_name)" +
-	" VALUES ($1, $2, $3)"
+	" VALUES ($1, $2, $3) ON CONFLICT DO NOTHING"
 
 const deleteJoinedHostsSQL = "" +
 	"DELETE FROM federationsender_joined_hosts WHERE event_id = ANY($1)"

federationsender/storage/sqlite3/joined_hosts_table.go

@@ -47,7 +47,7 @@ CREATE INDEX IF NOT EXISTS federatonsender_joined_hosts_room_id_idx
 `
 
 const insertJoinedHostsSQL = "" +
-	"INSERT INTO federationsender_joined_hosts (room_id, event_id, server_name)" +
+	"INSERT OR IGNORE INTO federationsender_joined_hosts (room_id, event_id, server_name)" +
 	" VALUES ($1, $2, $3)"
 
 const deleteJoinedHostsSQL = "" +

go.mod

@@ -2,14 +2,15 @@ module github.com/matrix-org/dendrite
 
 require (
 	github.com/DATA-DOG/go-sqlmock v1.5.0
+	github.com/HdrHistogram/hdrhistogram-go v1.0.1 // indirect
 	github.com/S7evinK/saramajetstream v0.0.0-20210530124157-ff2a02c95ca7
 	github.com/Shopify/sarama v1.29.0
-	github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd // indirect
+	github.com/getsentry/sentry-go v0.10.0
 	github.com/gologme/log v1.2.0
 	github.com/gorilla/mux v1.8.0
+	github.com/gorilla/websocket v1.4.2
 	github.com/hashicorp/golang-lru v0.5.4
-	github.com/klauspost/compress v1.12.3 // indirect
-	github.com/lib/pq v1.8.0
+	github.com/lib/pq v1.9.0
 	github.com/libp2p/go-libp2p v0.13.0
 	github.com/libp2p/go-libp2p-circuit v0.4.0
 	github.com/libp2p/go-libp2p-core v0.8.3
@@ -18,33 +19,35 @@ require (
 	github.com/libp2p/go-libp2p-kad-dht v0.11.1
 	github.com/libp2p/go-libp2p-pubsub v0.4.1
 	github.com/libp2p/go-libp2p-record v0.1.3
-	github.com/lucas-clemente/quic-go v0.17.3
+	github.com/lucas-clemente/quic-go v0.19.3
 	github.com/matrix-org/dugong v0.0.0-20180820122854-51a565b5666b
 	github.com/matrix-org/go-http-js-libp2p v0.0.0-20200518170932-783164aeeda4
 	github.com/matrix-org/go-sqlite3-js v0.0.0-20200522092705-bc8506ccbcf3
 	github.com/matrix-org/gomatrix v0.0.0-20200827122206-7dd5e2a05bcd
-	github.com/matrix-org/gomatrixserverlib v0.0.0-20210216163908-bab1f2be20d0
-	github.com/matrix-org/naffka v0.0.0-20200901083833-bcdd62999a91
+	github.com/matrix-org/gomatrixserverlib v0.0.0-20210302161955-6142fe3f8c2c
+	github.com/matrix-org/naffka v0.0.0-20201009174903-d26a3b9cb161
+	github.com/matrix-org/pinecone v0.0.0-20210510160342-a1dfbcf4bd47
 	github.com/matrix-org/util v0.0.0-20200807132607-55161520e1d4
-	github.com/mattn/go-sqlite3 v1.14.2
+	github.com/mattn/go-sqlite3 v1.14.7-0.20210414154423-1157a4212dcb
 	github.com/nats-io/nats.go v1.11.0
 	github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646
 	github.com/ngrok/sqlmw v0.0.0-20200129213757-d5c93a81bec6
 	github.com/opentracing/opentracing-go v1.2.0
 	github.com/pkg/errors v0.9.1
-	github.com/pressly/goose v2.7.0-rc5+incompatible
-	github.com/prometheus/client_golang v1.7.1
-	github.com/sirupsen/logrus v1.7.0
-	github.com/tidwall/gjson v1.6.7
-	github.com/tidwall/sjson v1.1.4
+	github.com/pressly/goose v2.7.0+incompatible
+	github.com/prometheus/client_golang v1.9.0
+	github.com/sirupsen/logrus v1.8.0
+	github.com/tidwall/gjson v1.6.8
+	github.com/tidwall/sjson v1.1.5
 	github.com/uber/jaeger-client-go v2.25.0+incompatible
-	github.com/uber/jaeger-lib v2.2.0+incompatible
+	github.com/uber/jaeger-lib v2.4.0+incompatible
 	github.com/yggdrasil-network/yggdrasil-go v0.3.15-0.20210218094457-e77ca8019daa
-	go.uber.org/atomic v1.6.0
+	go.uber.org/atomic v1.7.0
 	golang.org/x/crypto v0.0.0-20210513164829-c07d793c2f9a
 	golang.org/x/net v0.0.0-20210525063256-abc453219eb5
-	gopkg.in/h2non/bimg.v1 v1.1.4
-	gopkg.in/yaml.v2 v2.3.0
+	golang.org/x/tools v0.0.0-20200117012304-6edc0a871e69 // indirect
+	gopkg.in/h2non/bimg.v1 v1.1.5
+	gopkg.in/yaml.v2 v2.4.0
 )
 
-go 1.13
+go 1.14

go.sum

@@ -13,30 +13,68 @@ github.com/Arceliar/phony v0.0.0-20191006174943-d0c68492aca0 h1:p3puK8Sl2xK+2Fnn
 github.com/Arceliar/phony v0.0.0-20191006174943-d0c68492aca0/go.mod h1:6Lkn+/zJilRMsKmbmG1RPoamiArC6HS73xbwRyp3UyI=
 github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/CloudyKit/fastprinter v0.0.0-20200109182630-33d98a066a53/go.mod h1:+3IMCy2vIlbG1XG/0ggNQv0SvxCAIpPM5b1nCz56Xno=
+github.com/CloudyKit/jet/v3 v3.0.0/go.mod h1:HKQPgSJmdK8hdoAbKUUWajkHyHo4RaU5rMdUywE7VMo=
 github.com/DATA-DOG/go-sqlmock v1.5.0 h1:Shsta01QNfFxHCfpW6YH2STWB0MudeXXEWMr20OEh60=
 github.com/DATA-DOG/go-sqlmock v1.5.0/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
+github.com/HdrHistogram/hdrhistogram-go v1.0.1 h1:GX8GAYDuhlFQnI2fRDHQhTlkHMz8bEn0jTI6LJU0mpw=
+github.com/HdrHistogram/hdrhistogram-go v1.0.1/go.mod h1:BWJ+nMSHY3L41Zj7CA3uXnloDp7xxV0YvstAE7nKTaM=
+github.com/Joker/hpp v1.0.0/go.mod h1:8x5n+M1Hp5hC0g8okX3sR3vFQwynaX/UgSOM9MeBKzY=
+github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
 github.com/Kubuxu/go-os-helper v0.0.1/go.mod h1:N8B+I7vPCT80IcP58r50u4+gEEcsZETFUpAzWW2ep1Y=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/PuerkitoBio/goquery v1.5.1/go.mod h1:GsLWisAFVj4WgDibEWF4pvYnkVQBpKBKeU+7zCJoLcc=
-github.com/S7evinK/saramajetstream v0.0.0-20210530122524-8dd36dca6508 h1:0iQic2qSZvgEQa7FFv+XVPSSBaFVXDTmwBvsvlrKrwM=
-github.com/S7evinK/saramajetstream v0.0.0-20210530122524-8dd36dca6508/go.mod h1:qsW9egh12Sj8Qk+mQvDuu+J3XLUaQFniSRmuKef8SNc=
+github.com/RoaringBitmap/roaring v0.4.7/go.mod h1:8khRDP4HmeXns4xIj9oGrKSz7XTQiJx2zgh7AcNke4w=
+github.com/RyanCarrier/dijkstra v1.0.0/go.mod h1:5agGUBNEtUAGIANmbw09fuO3a2htPEkc1jNH01qxCWA=
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 github.com/S7evinK/saramajetstream v0.0.0-20210530124157-ff2a02c95ca7 h1:Jd59mc2EvHBWmpQDOWsBPRFZJ8XhBByxe2afHmScBys=
 github.com/S7evinK/saramajetstream v0.0.0-20210530124157-ff2a02c95ca7/go.mod h1:ne+jkLlzafIzaE4Q0Ze81T27dNgXe1wxovVEoAtSHTc=
+github.com/Shopify/goreferrer v0.0.0-20181106222321-ec9c9a553398/go.mod h1:a1uqRtAwp2Xwc6WNPJEufxJ7fx3npB4UV/JOLmbu5I0=
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 github.com/Shopify/sarama v1.26.1/go.mod h1:NbSGBSSndYaIhRcBtY9V0U7AyH+x71bG668AuWys/yU=
-github.com/Shopify/sarama v1.28.0/go.mod h1:j/2xTrU39dlzBmsxF1eQ2/DdWrxyBCl6pzz7a81o/ZY=
 github.com/Shopify/sarama v1.29.0 h1:ARid8o8oieau9XrHI55f/L3EoRAhm9px6sonbD7yuUE=
 github.com/Shopify/sarama v1.29.0/go.mod h1:2QpgD79wpdAESqNQMxNc0KYMkycd4slxGdV3TWSVqrU=
 github.com/Shopify/toxiproxy v2.1.4+incompatible h1:TKdv8HiTLgE5wdJuEML90aBgNWsokNbMijUGhmcoBJc=
 github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
 github.com/VividCortex/ewma v1.1.1/go.mod h1:2Tkkvm3sRDVXaiyucHiACn4cqf7DpdyLvmxzcbUokwA=
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 github.com/andybalholm/cascadia v1.1.0/go.mod h1:GsXiBklL0woXo1j/WYWtSYYC4ouU9PqHO0sqidkEA4Y=
 github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
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+github.com/apache/thrift v0.13.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
+github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
+github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
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@@ -178,45 +266,76 @@ github.com/google/gopacket v1.1.18/go.mod h1:UdDNZ1OO62aGYVnPhxT1U6aI7ukYtA/kB8v
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@@ -260,6 +379,11 @@ github.com/ipfs/go-log/v2 v2.0.3/go.mod h1:O7P1lJt27vWHhOwQmcFEvlmo49ry2VY2+JfBW
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@@ -798,13 +1029,25 @@ github.com/tidwall/pretty v1.0.1/go.mod h1:XNkn88O1ChpSDQmQeStsy+sBenx6DDtFZJxhV
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@@ -820,32 +1063,50 @@ github.com/whyrusleeping/multiaddr-filter v0.0.0-20160516205228-e903e4adabd7 h1:
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@@ -855,6 +1116,7 @@ golang.org/x/build v0.0.0-20190111050920-041ab4dc3f9d/go.mod h1:OWs+y06UdEOHN4y+
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@@ -866,11 +1128,14 @@ golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8U
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@@ -881,6 +1146,7 @@ golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL
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@@ -891,23 +1157,35 @@ golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73r
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@@ -1004,6 +1302,7 @@ golang.zx2c4.com/wireguard/windows v0.3.5/go.mod h1:ATrIFNoq3rsK735WJiQzfWYyNFc9
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@@ -1015,14 +1314,20 @@ google.golang.org/genproto v0.0.0-20181202183823-bd91e49a0898/go.mod h1:7Ep/1NZk
 google.golang.org/genproto v0.0.0-20190306203927-b5d61aea6440/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
+google.golang.org/genproto v0.0.0-20190530194941-fb225487d101/go.mod h1:z3L6/3dTEVtUr6QSP8miRzeRqwQOioJ9I66odjN4I7s=
 google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
 google.golang.org/grpc v1.14.0/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=
 google.golang.org/grpc v1.16.0/go.mod h1:0JHn/cJsOMiMfNA9+DeHDlAU7KAAB5GDlYFpa9MZMio=
 google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
+google.golang.org/grpc v1.20.0/go.mod h1:chYK+tFQF0nDUGJgXMSgLCQk3phJEuONr2DCgLDdAQM=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
+google.golang.org/grpc v1.21.0/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
+google.golang.org/grpc v1.22.1/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
+google.golang.org/grpc v1.23.1/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
+google.golang.org/grpc v1.26.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.28.1/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKal+60=
 google.golang.org/grpc v1.31.1 h1:SfXqXS5hkufcdZ/mHtYCh53P2b+92WQq/DZcKLgsFRs=
 google.golang.org/grpc v1.31.1/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
@@ -1039,16 +1344,22 @@ gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLks
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
+gopkg.in/cheggaaa/pb.v1 v1.0.25/go.mod h1:V/YB90LKu/1FcN3WVnfiiE5oMCibMjukxqG/qStrOgw=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
-gopkg.in/h2non/bimg.v1 v1.1.4 h1:zUjVbPzrc/dFxlpb0JkFovMO08kEjbvNul/o5gHXhXw=
-gopkg.in/h2non/bimg.v1 v1.1.4/go.mod h1:PgsZL7dLwUbsGm1NYps320GxGgvQNTnecMCZqxV11So=
+gopkg.in/gcfg.v1 v1.2.3/go.mod h1:yesOnuUOFQAhST5vPY4nbZsb/huCgGGXlipJsBn0b3o=
+gopkg.in/go-playground/assert.v1 v1.2.1/go.mod h1:9RXL0bg/zibRAgZUYszZSwO/z8Y/a8bDuhia5mkpMnE=
+gopkg.in/go-playground/validator.v8 v8.18.2/go.mod h1:RX2a/7Ha8BgOhfk7j780h4/u/RRjR0eouCJSH80/M2Y=
+gopkg.in/h2non/bimg.v1 v1.1.5 h1:w0KZvuIj2FQR0GedFZJNbISxk+oO5tDpkSLi9nuIrfQ=
+gopkg.in/h2non/bimg.v1 v1.1.5/go.mod h1:PgsZL7dLwUbsGm1NYps320GxGgvQNTnecMCZqxV11So=
 gopkg.in/h2non/gock.v1 v1.0.14 h1:fTeu9fcUvSnLNacYvYI54h+1/XEteDyHvrVCZEEEYNM=
 gopkg.in/h2non/gock.v1 v1.0.14/go.mod h1:sX4zAkdYX1TRGJ2JY156cFspQn4yRWn6p9EMdODlynE=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
+gopkg.in/ini.v1 v1.51.1/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/jcmturner/aescts.v1 v1.0.1/go.mod h1:nsR8qBOg+OucoIW+WMhB3GspUQXq9XorLnQb9XtvcOo=
 gopkg.in/jcmturner/dnsutils.v1 v1.0.1/go.mod h1:m3v+5svpVOhtFAP/wSz+yzh4Mc0Fg7eRhxkJMWSIz9Q=
 gopkg.in/jcmturner/goidentity.v3 v3.0.0/go.mod h1:oG2kH0IvSYNIu80dVAyu/yoefjq1mNfM5bm88whjWx4=
@@ -1056,18 +1367,25 @@ gopkg.in/jcmturner/gokrb5.v7 v7.5.0/go.mod h1:l8VISx+WGYp+Fp7KRbsiUuXTTOnxIc3Tuv
 gopkg.in/jcmturner/rpc.v1 v1.1.0/go.mod h1:YIdkC4XfD6GXbzje11McwsDuOlZQSb9W4vfLvuNnlv8=
 gopkg.in/macaroon.v2 v2.1.0 h1:HZcsjBCzq9t0eBPMKqTN/uSN6JOm78ZJ2INbqcBQOUI=
 gopkg.in/macaroon.v2 v2.1.0/go.mod h1:OUb+TQP/OP0WOerC2Jp/3CwhIKyIa9kQjuc7H24e6/o=
+gopkg.in/mgo.v2 v2.0.0-20180705113604-9856a29383ce/go.mod h1:yeKp02qBN3iKW1OzL3MGk2IdtZzaj7SFntXj72NppTA=
+gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
 gopkg.in/src-d/go-cli.v0 v0.0.0-20181105080154-d492247bbc0d/go.mod h1:z+K8VcOYVYcSwSjGebuDL6176A1XskgbtNl64NSg+n8=
 gopkg.in/src-d/go-log.v1 v1.0.1/go.mod h1:GN34hKP0g305ysm2/hctJ0Y8nWP3zxXXJ8GFabTyABE=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
+gopkg.in/warnings.v0 v0.1.2/go.mod h1:jksf8JmL6Qr/oQM2OXTHunEvvTAsrWBLb6OOjuVWRNI=
+gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.0-20191120175047-4206685974f2/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 grpc.go4.org v0.0.0-20170609214715-11d0a25b4919/go.mod h1:77eQGdRu53HpSqPFJFmuJdjuHRquDANNeA4x7B8WQ9o=
@@ -1079,5 +1397,7 @@ honnef.co/go/tools v0.0.1-2019.2.3 h1:3JgtbtFHMiCmsznwGVTUWbgGov+pVqnlf1dEJTNAXe
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
 rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
+sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=
+sourcegraph.com/sourcegraph/appdash v0.0.0-20190731080439-ebfcffb1b5c0/go.mod h1:hI742Nqp5OhwiqlzhgfbWU4mW4yO10fP+LoT9WOswdU=
 sourcegraph.com/sourcegraph/go-diff v0.5.0/go.mod h1:kuch7UrkMzY0X+p9CRK03kfuPQ2zzQcaEFbx8wA8rck=
 sourcegraph.com/sqs/pbtypes v0.0.0-20180604144634-d3ebe8f20ae4/go.mod h1:ketZ/q3QxT9HOBeFhu6RdvsftgpsbFHBF5Cas6cDKZ0=

internal/httputil/httpapi.go

@@ -16,6 +16,7 @@ package httputil
 
 import (
 	"context"
+	"fmt"
 	"io"
 	"net/http"
 	"net/http/httptest"
@@ -25,6 +26,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/getsentry/sentry-go"
 	"github.com/gorilla/mux"
 	"github.com/matrix-org/dendrite/clientapi/auth"
 	federationsenderAPI "github.com/matrix-org/dendrite/federationsender/api"
@@ -59,8 +61,29 @@ func MakeAuthAPI(
 		logger := util.GetLogger((req.Context()))
 		logger = logger.WithField("user_id", device.UserID)
 		req = req.WithContext(util.ContextWithLogger(req.Context(), logger))
+		// add the user to Sentry, if enabled
+		hub := sentry.GetHubFromContext(req.Context())
+		if hub != nil {
+			hub.Scope().SetTag("user_id", device.UserID)
+			hub.Scope().SetTag("device_id", device.ID)
+		}
+		defer func() {
+			if r := recover(); r != nil {
+				if hub != nil {
+					hub.CaptureException(fmt.Errorf("%s panicked", req.URL.Path))
+				}
+				// re-panic to return the 500
+				panic(r)
+			}
+		}()
 
-		return f(req, device)
+		jsonRes := f(req, device)
+		// do not log 4xx as errors as they are client fails, not server fails
+		if hub != nil && jsonRes.Code >= 500 {
+			hub.Scope().SetExtra("response", jsonRes)
+			hub.CaptureException(fmt.Errorf("%s returned HTTP %d", req.URL.Path, jsonRes.Code))
+		}
+		return jsonRes
 	}
 	return MakeExternalAPI(metricsName, h)
 }
@@ -195,13 +218,34 @@ func MakeFedAPI(
 		if fedReq == nil {
 			return errResp
 		}
+		// add the user to Sentry, if enabled
+		hub := sentry.GetHubFromContext(req.Context())
+		if hub != nil {
+			hub.Scope().SetTag("origin", string(fedReq.Origin()))
+			hub.Scope().SetTag("uri", fedReq.RequestURI())
+		}
+		defer func() {
+			if r := recover(); r != nil {
+				if hub != nil {
+					hub.CaptureException(fmt.Errorf("%s panicked", req.URL.Path))
+				}
+				// re-panic to return the 500
+				panic(r)
+			}
+		}()
 		go wakeup.Wakeup(req.Context(), fedReq.Origin())
 		vars, err := URLDecodeMapValues(mux.Vars(req))
 		if err != nil {
-			return util.ErrorResponse(err)
+			return util.MatrixErrorResponse(400, "M_UNRECOGNISED", "badly encoded query params")
 		}
 
-		return f(req, fedReq, vars)
+		jsonRes := f(req, fedReq, vars)
+		// do not log 4xx as errors as they are client fails, not server fails
+		if hub != nil && jsonRes.Code >= 500 {
+			hub.Scope().SetExtra("response", jsonRes)
+			hub.CaptureException(fmt.Errorf("%s returned HTTP %d", req.URL.Path, jsonRes.Code))
+		}
+		return jsonRes
 	}
 	return MakeExternalAPI(metricsName, h)
 }

internal/mutex.go

@@ -0,0 +1,38 @@
+package internal
+
+import "sync"
+
+type MutexByRoom struct {
+	mu       *sync.Mutex // protects the map
+	roomToMu map[string]*sync.Mutex
+}
+
+func NewMutexByRoom() *MutexByRoom {
+	return &MutexByRoom{
+		mu:       &sync.Mutex{},
+		roomToMu: make(map[string]*sync.Mutex),
+	}
+}
+
+func (m *MutexByRoom) Lock(roomID string) {
+	m.mu.Lock()
+	roomMu := m.roomToMu[roomID]
+	if roomMu == nil {
+		roomMu = &sync.Mutex{}
+	}
+	m.roomToMu[roomID] = roomMu
+	m.mu.Unlock()
+	// don't lock inside m.mu else we can deadlock
+	roomMu.Lock()
+}
+
+func (m *MutexByRoom) Unlock(roomID string) {
+	m.mu.Lock()
+	roomMu := m.roomToMu[roomID]
+	if roomMu == nil {
+		panic("MutexByRoom: Unlock before Lock")
+	}
+	m.mu.Unlock()
+
+	roomMu.Unlock()
+}

keyserver/internal/device_list_update.go

@@ -26,9 +26,28 @@ import (
 	"github.com/matrix-org/dendrite/keyserver/api"
 	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/matrix-org/util"
+	"github.com/prometheus/client_golang/prometheus"
 	"github.com/sirupsen/logrus"
 )
 
+var (
+	deviceListUpdateCount = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Namespace: "dendrite",
+			Subsystem: "keyserver",
+			Name:      "device_list_update",
+			Help:      "Number of times we have attempted to update device lists from this server",
+		},
+		[]string{"server"},
+	)
+)
+
+func init() {
+	prometheus.MustRegister(
+		deviceListUpdateCount,
+	)
+}
+
 // DeviceListUpdater handles device list updates from remote servers.
 //
 // In the case where we have the prev_id for an update, the updater just stores the update (after acquiring a per-user lock).
@@ -53,10 +72,8 @@ import (
 //     we guarantee we will get around to it. Also, more users on a given server does not increase the number of requests
 //     (as /keys/query allows multiple users to be specified) so being stuck behind matrix.org won't materially be any worse
 //     than being stuck behind foo.bar
-// In the event that the query fails, the worker spins up a short-lived goroutine whose sole purpose is to inject the server
-// name back into the channel after a certain amount of time. If in the interim the device lists have been updated, then
-// the database query will return no stale lists. Reinjection into the channel continues until success or the server terminates,
-// when it will be reloaded on startup.
+// In the event that the query fails, a lock is acquired and the server name along with the time to wait before retrying is
+// set in a map. A restarter goroutine periodically probes this map and injects servers which are ready to be retried.
 type DeviceListUpdater struct {
 	// A map from user_id to a mutex. Used when we are missing prev IDs so we don't make more than 1
 	// request to the remote server and race.
@@ -278,47 +295,44 @@ func (u *DeviceListUpdater) clearChannel(userID string) {
 }
 
 func (u *DeviceListUpdater) worker(ch chan gomatrixserverlib.ServerName) {
-	// It's possible to get many of the same server name in the channel, so in order
-	// to prevent processing the same server over and over we keep track of when we
-	// last made a request to the server. If we get the server name during the cooloff
-	// period, we'll ignore the poke.
-	lastProcessed := make(map[gomatrixserverlib.ServerName]time.Time)
-	// this can't be too long else sytest will give up trying to do a test
-	cooloffPeriod := 500 * time.Millisecond
-	shouldProcess := func(srv gomatrixserverlib.ServerName) bool {
-		// we should process requests when now is after the last process time + cooloff
-		return time.Now().After(lastProcessed[srv].Add(cooloffPeriod))
-	}
-
-	// on failure, spin up a short-lived goroutine to inject the server name again.
-	scheduledRetries := make(map[gomatrixserverlib.ServerName]time.Time)
-	inject := func(srv gomatrixserverlib.ServerName, duration time.Duration) {
-		time.Sleep(duration)
-		ch <- srv
-	}
-
-	for serverName := range ch {
-		if !shouldProcess(serverName) {
-			if time.Now().Before(scheduledRetries[serverName]) {
-				// do not inject into the channel as we know there will be a sleeping goroutine
-				// which will do it after the cooloff period expires
-				continue
-			} else {
-				scheduledRetries[serverName] = time.Now().Add(cooloffPeriod)
-				go inject(serverName, cooloffPeriod)
-				continue
+	retries := make(map[gomatrixserverlib.ServerName]time.Time)
+	retriesMu := &sync.Mutex{}
+	// restarter goroutine which will inject failed servers into ch when it is time
+	go func() {
+		for {
+			var serversToRetry []gomatrixserverlib.ServerName
+			time.Sleep(time.Second)
+			retriesMu.Lock()
+			now := time.Now()
+			for srv, retryAt := range retries {
+				if now.After(retryAt) {
+					serversToRetry = append(serversToRetry, srv)
+				}
+			}
+			for _, srv := range serversToRetry {
+				delete(retries, srv)
+			}
+			retriesMu.Unlock()
+			for _, srv := range serversToRetry {
+				ch <- srv
 			}
 		}
-		lastProcessed[serverName] = time.Now()
+	}()
+	for serverName := range ch {
 		waitTime, shouldRetry := u.processServer(serverName)
 		if shouldRetry {
-			scheduledRetries[serverName] = time.Now().Add(waitTime)
-			go inject(serverName, waitTime)
+			retriesMu.Lock()
+			_, exists := retries[serverName]
+			if !exists {
+				retries[serverName] = time.Now().Add(waitTime)
+			}
+			retriesMu.Unlock()
 		}
 	}
 }
 
 func (u *DeviceListUpdater) processServer(serverName gomatrixserverlib.ServerName) (time.Duration, bool) {
+	deviceListUpdateCount.WithLabelValues(string(serverName)).Inc()
 	requestTimeout := time.Second * 30 // max amount of time we want to spend on each request
 	ctx, cancel := context.WithTimeout(context.Background(), requestTimeout)
 	defer cancel()
@@ -330,16 +344,16 @@ func (u *DeviceListUpdater) processServer(serverName gomatrixserverlib.ServerNam
 		logger.WithError(err).Error("failed to load stale device lists")
 		return waitTime, true
 	}
-	hasFailures := false
+	failCount := 0
 	for _, userID := range userIDs {
 		if ctx.Err() != nil {
 			// we've timed out, give up and go to the back of the queue to let another server be processed.
-			hasFailures = true
+			failCount += 1
 			break
 		}
 		res, err := u.fedClient.GetUserDevices(ctx, serverName, userID)
 		if err != nil {
-			logger.WithError(err).WithField("user_id", userID).Error("failed to query device keys for user")
+			failCount += 1
 			fcerr, ok := err.(*fedsenderapi.FederationClientError)
 			if ok {
 				if fcerr.RetryAfter > 0 {
@@ -347,21 +361,26 @@ func (u *DeviceListUpdater) processServer(serverName gomatrixserverlib.ServerNam
 				} else if fcerr.Blacklisted {
 					waitTime = time.Hour * 8
 				}
+			} else {
+				waitTime = time.Hour
+				logger.WithError(err).Warn("GetUserDevices returned unknown error type")
 			}
-			hasFailures = true
 			continue
 		}
 		err = u.updateDeviceList(&res)
 		if err != nil {
 			logger.WithError(err).WithField("user_id", userID).Error("fetched device list but failed to store/emit it")
-			hasFailures = true
+			failCount += 1
 		}
 	}
+	if failCount > 0 {
+		logger.WithField("total", len(userIDs)).WithField("failed", failCount).WithField("wait", waitTime).Error("failed to query device keys for some users")
+	}
 	for _, userID := range userIDs {
 		// always clear the channel to unblock Update calls regardless of success/failure
 		u.clearChannel(userID)
 	}
-	return waitTime, hasFailures
+	return waitTime, failCount > 0
 }
 
 func (u *DeviceListUpdater) updateDeviceList(res *gomatrixserverlib.RespUserDevices) error {

mediaapi/routing/upload.go

@@ -158,6 +158,12 @@ func (r *uploadRequest) doUpload(
 		}
 	}
 
+	// Check if temp file size exceeds max file size configuration
+	if bytesWritten > types.FileSizeBytes(*cfg.MaxFileSizeBytes) {
+		fileutils.RemoveDir(tmpDir, r.Logger) // delete temp file
+		return requestEntityTooLargeJSONResponse(*cfg.MaxFileSizeBytes)
+	}
+
 	// Look up the media by the file hash. If we already have the file but under a
 	// different media ID then we won't upload the file again - instead we'll just
 	// add a new metadata entry that refers to the same file.
@@ -219,26 +225,17 @@ func (r *uploadRequest) doUpload(
 	)
 }
 
+func requestEntityTooLargeJSONResponse(maxFileSizeBytes config.FileSizeBytes) *util.JSONResponse {
+	return &util.JSONResponse{
+		Code: http.StatusRequestEntityTooLarge,
+		JSON: jsonerror.Unknown(fmt.Sprintf("HTTP Content-Length is greater than the maximum allowed upload size (%v).", maxFileSizeBytes)),
+	}
+}
+
 // Validate validates the uploadRequest fields
 func (r *uploadRequest) Validate(maxFileSizeBytes config.FileSizeBytes) *util.JSONResponse {
-	if r.MediaMetadata.FileSizeBytes < 1 {
-		return &util.JSONResponse{
-			Code: http.StatusLengthRequired,
-			JSON: jsonerror.Unknown("HTTP Content-Length request header must be greater than zero."),
-		}
-	}
 	if maxFileSizeBytes > 0 && r.MediaMetadata.FileSizeBytes > types.FileSizeBytes(maxFileSizeBytes) {
-		return &util.JSONResponse{
-			Code: http.StatusRequestEntityTooLarge,
-			JSON: jsonerror.Unknown(fmt.Sprintf("HTTP Content-Length is greater than the maximum allowed upload size (%v).", maxFileSizeBytes)),
-		}
-	}
-	// TODO: Check if the Content-Type is a valid type?
-	if r.MediaMetadata.ContentType == "" {
-		return &util.JSONResponse{
-			Code: http.StatusBadRequest,
-			JSON: jsonerror.Unknown("HTTP Content-Type request header must be set."),
-		}
+		return requestEntityTooLargeJSONResponse(maxFileSizeBytes)
 	}
 	if strings.HasPrefix(string(r.MediaMetadata.UploadName), "~") {
 		return &util.JSONResponse{

roomserver/api/alias.go

@@ -34,6 +34,9 @@ type SetRoomAliasResponse struct {
 type GetRoomIDForAliasRequest struct {
 	// Alias we want to lookup
 	Alias string `json:"alias"`
+	// Should we ask appservices for their aliases as a part of
+	// the request?
+	IncludeAppservices bool `json:"include_appservices"`
 }
 
 // GetRoomIDForAliasResponse is a response to GetRoomIDForAlias

roomserver/api/query.go

@@ -151,7 +151,9 @@ type QueryMembershipsForRoomRequest struct {
 	JoinedOnly bool `json:"joined_only"`
 	// ID of the room to fetch memberships from
 	RoomID string `json:"room_id"`
-	// ID of the user sending the request
+	// Optional - ID of the user sending the request, for checking if the
+	// user is allowed to see the memberships. If not specified then all
+	// room memberships will be returned.
 	Sender string `json:"sender"`
 }
 

roomserver/api/wrapper.go

@@ -172,7 +172,6 @@ func IsServerBannedFromRoom(ctx context.Context, rsAPI RoomserverInternalAPI, ro
 // PopulatePublicRooms extracts PublicRoom information for all the provided room IDs. The IDs are not checked to see if they are visible in the
 // published room directory.
 // due to lots of switches
-// nolint:gocyclo
 func PopulatePublicRooms(ctx context.Context, roomIDs []string, rsAPI RoomserverInternalAPI) ([]gomatrixserverlib.PublicRoom, error) {
 	avatarTuple := gomatrixserverlib.StateKeyTuple{EventType: "m.room.avatar", StateKey: ""}
 	nameTuple := gomatrixserverlib.StateKeyTuple{EventType: "m.room.name", StateKey: ""}

roomserver/internal/alias.go

@@ -88,31 +88,35 @@ func (r *RoomserverInternalAPI) GetRoomIDForAlias(
 ) error {
 	// Look up the room ID in the database
 	roomID, err := r.DB.GetRoomIDForAlias(ctx, request.Alias)
-	if err != nil {
-		return err
+	if err == nil && roomID != "" {
+		response.RoomID = roomID
+		return nil
 	}
 
-	if r.asAPI != nil { // appservice component is wired in
-		if roomID == "" {
-			// No room found locally, try our application services by making a call to
-			// the appservice component
-			aliasReq := asAPI.RoomAliasExistsRequest{Alias: request.Alias}
-			var aliasResp asAPI.RoomAliasExistsResponse
-			if err = r.asAPI.RoomAliasExists(ctx, &aliasReq, &aliasResp); err != nil {
+	// Check appservice on err, but only if the appservice API is
+	// wired in and no room ID was found.
+	if r.asAPI != nil && request.IncludeAppservices && roomID == "" {
+		// No room found locally, try our application services by making a call to
+		// the appservice component
+		aliasReq := &asAPI.RoomAliasExistsRequest{
+			Alias: request.Alias,
+		}
+		aliasRes := &asAPI.RoomAliasExistsResponse{}
+		if err = r.asAPI.RoomAliasExists(ctx, aliasReq, aliasRes); err != nil {
+			return err
+		}
+
+		if aliasRes.AliasExists {
+			roomID, err = r.DB.GetRoomIDForAlias(ctx, request.Alias)
+			if err != nil {
 				return err
 			}
-
-			if aliasResp.AliasExists {
-				roomID, err = r.DB.GetRoomIDForAlias(ctx, request.Alias)
-				if err != nil {
-					return err
-				}
-			}
+			response.RoomID = roomID
+			return nil
 		}
 	}
 
-	response.RoomID = roomID
-	return nil
+	return err
 }
 
 // GetAliasesForRoomID implements alias.RoomserverInternalAPI

roomserver/internal/api.go

@@ -4,6 +4,7 @@ import (
 	"context"
 
 	"github.com/Shopify/sarama"
+	"github.com/getsentry/sentry-go"
 	asAPI "github.com/matrix-org/dendrite/appservice/api"
 	fsAPI "github.com/matrix-org/dendrite/federationsender/api"
 	"github.com/matrix-org/dendrite/internal/caching"
@@ -89,6 +90,7 @@ func (r *RoomserverInternalAPI) SetFederationSenderAPI(fsAPI fsAPI.FederationSen
 		Cfg:        r.Cfg,
 		DB:         r.DB,
 		FSAPI:      r.fsAPI,
+		RSAPI:      r,
 		Inputer:    r.Inputer,
 	}
 	r.Peeker = &perform.Peeker{
@@ -144,6 +146,7 @@ func (r *RoomserverInternalAPI) PerformInvite(
 ) error {
 	outputEvents, err := r.Inviter.PerformInvite(ctx, req, res)
 	if err != nil {
+		sentry.CaptureException(err)
 		return err
 	}
 	if len(outputEvents) == 0 {
@@ -159,6 +162,7 @@ func (r *RoomserverInternalAPI) PerformLeave(
 ) error {
 	outputEvents, err := r.Leaver.PerformLeave(ctx, req, res)
 	if err != nil {
+		sentry.CaptureException(err)
 		return err
 	}
 	if len(outputEvents) == 0 {

roomserver/internal/helpers/helpers.go

@@ -270,7 +270,6 @@ func CheckServerAllowedToSeeEvent(
 }
 
 // TODO: Remove this when we have tests to assert correctness of this function
-// nolint:gocyclo
 func ScanEventTree(
 	ctx context.Context, db storage.Database, info types.RoomInfo, front []string, visited map[string]bool, limit int,
 	serverName gomatrixserverlib.ServerName,

roomserver/internal/input/input.go

@@ -22,6 +22,7 @@ import (
 	"time"
 
 	"github.com/Shopify/sarama"
+	"github.com/getsentry/sentry-go"
 	"github.com/matrix-org/dendrite/internal/hooks"
 	"github.com/matrix-org/dendrite/roomserver/acls"
 	"github.com/matrix-org/dendrite/roomserver/api"
@@ -64,6 +65,8 @@ func (w *inputWorker) start() {
 			_, task.err = w.r.processRoomEvent(task.ctx, task.event)
 			if task.err == nil {
 				hooks.Run(hooks.KindNewEventPersisted, task.event.Event)
+			} else {
+				sentry.CaptureException(task.err)
 			}
 			task.wg.Done()
 		case <-time.After(time.Second * 5):

roomserver/internal/perform/perform_backfill.go

@@ -381,7 +381,6 @@ func (b *backfillRequester) StateBeforeEvent(ctx context.Context, roomVer gomatr
 // It returns a list of servers which can be queried for backfill requests. These servers
 // will be servers that are in the room already. The entries at the beginning are preferred servers
 // and will be tried first. An empty list will fail the request.
-// nolint:gocyclo
 func (b *backfillRequester) ServersAtEvent(ctx context.Context, roomID, eventID string) []gomatrixserverlib.ServerName {
 	// eventID will be a prev_event ID of a backwards extremity, meaning we will not have a database entry for it. Instead, use
 	// its successor, so look it up.

roomserver/internal/perform/perform_invite.go

@@ -37,7 +37,6 @@ type Inviter struct {
 	Inputer *input.Inputer
 }
 
-// nolint:gocyclo
 func (r *Inviter) PerformInvite(
 	ctx context.Context,
 	req *api.PerformInviteRequest,

roomserver/internal/perform/perform_join.go

@@ -21,9 +21,11 @@ import (
 	"strings"
 	"time"
 
+	"github.com/getsentry/sentry-go"
 	fsAPI "github.com/matrix-org/dendrite/federationsender/api"
 	"github.com/matrix-org/dendrite/internal/eventutil"
 	"github.com/matrix-org/dendrite/roomserver/api"
+	rsAPI "github.com/matrix-org/dendrite/roomserver/api"
 	"github.com/matrix-org/dendrite/roomserver/internal/helpers"
 	"github.com/matrix-org/dendrite/roomserver/internal/input"
 	"github.com/matrix-org/dendrite/roomserver/storage"
@@ -36,6 +38,7 @@ type Joiner struct {
 	ServerName gomatrixserverlib.ServerName
 	Cfg        *config.RoomServer
 	FSAPI      fsAPI.FederationSenderInternalAPI
+	RSAPI      rsAPI.RoomserverInternalAPI
 	DB         storage.Database
 
 	Inputer *input.Inputer
@@ -49,6 +52,7 @@ func (r *Joiner) PerformJoin(
 ) {
 	roomID, joinedVia, err := r.performJoin(ctx, req)
 	if err != nil {
+		sentry.CaptureException(err)
 		perr, ok := err.(*api.PerformError)
 		if ok {
 			res.Error = perr
@@ -121,11 +125,17 @@ func (r *Joiner) performJoinRoomByAlias(
 		roomID = dirRes.RoomID
 		req.ServerNames = append(req.ServerNames, dirRes.ServerNames...)
 	} else {
+		var getRoomReq = rsAPI.GetRoomIDForAliasRequest{
+			Alias:              req.RoomIDOrAlias,
+			IncludeAppservices: true,
+		}
+		var getRoomRes = rsAPI.GetRoomIDForAliasResponse{}
 		// Otherwise, look up if we know this room alias locally.
-		roomID, err = r.DB.GetRoomIDForAlias(ctx, req.RoomIDOrAlias)
+		err = r.RSAPI.GetRoomIDForAlias(ctx, &getRoomReq, &getRoomRes)
 		if err != nil {
 			return "", "", fmt.Errorf("Lookup room alias %q failed: %w", req.RoomIDOrAlias, err)
 		}
+		roomID = getRoomRes.RoomID
 	}
 
 	// If the room ID is empty then we failed to look up the alias.
@@ -139,11 +149,20 @@ func (r *Joiner) performJoinRoomByAlias(
 }
 
 // TODO: Break this function up a bit
-// nolint:gocyclo
 func (r *Joiner) performJoinRoomByID(
 	ctx context.Context,
 	req *api.PerformJoinRequest,
 ) (string, gomatrixserverlib.ServerName, error) {
+	// The original client request ?server_name=... may include this HS so filter that out so we
+	// don't attempt to make_join with ourselves
+	for i := 0; i < len(req.ServerNames); i++ {
+		if req.ServerNames[i] == r.Cfg.Matrix.ServerName {
+			// delete this entry
+			req.ServerNames = append(req.ServerNames[:i], req.ServerNames[i+1:]...)
+			i--
+		}
+	}
+
 	// Get the domain part of the room ID.
 	_, domain, err := gomatrixserverlib.SplitID('!', req.RoomIDOrAlias)
 	if err != nil {

roomserver/internal/query/query.go

@@ -49,7 +49,6 @@ func (r *Queryer) QueryLatestEventsAndState(
 }
 
 // QueryStateAfterEvents implements api.RoomserverInternalAPI
-// nolint:gocyclo
 func (r *Queryer) QueryStateAfterEvents(
 	ctx context.Context,
 	request *api.QueryStateAfterEventsRequest,
@@ -242,6 +241,30 @@ func (r *Queryer) QueryMembershipsForRoom(
 	if err != nil {
 		return err
 	}
+	if info == nil {
+		return nil
+	}
+
+	// If no sender is specified then we will just return the entire
+	// set of memberships for the room, regardless of whether a specific
+	// user is allowed to see them or not.
+	if request.Sender == "" {
+		var events []types.Event
+		var eventNIDs []types.EventNID
+		eventNIDs, err = r.DB.GetMembershipEventNIDsForRoom(ctx, info.RoomNID, request.JoinedOnly, false)
+		if err != nil {
+			return fmt.Errorf("r.DB.GetMembershipEventNIDsForRoom: %w", err)
+		}
+		events, err = r.DB.Events(ctx, eventNIDs)
+		if err != nil {
+			return fmt.Errorf("r.DB.Events: %w", err)
+		}
+		for _, event := range events {
+			clientEvent := gomatrixserverlib.ToClientEvent(event.Event, gomatrixserverlib.FormatAll)
+			response.JoinEvents = append(response.JoinEvents, clientEvent)
+		}
+		return nil
+	}
 
 	membershipEventNID, stillInRoom, isRoomforgotten, err := r.DB.GetMembership(ctx, info.RoomNID, request.Sender)
 	if err != nil {
@@ -372,7 +395,6 @@ func (r *Queryer) QueryServerAllowedToSeeEvent(
 }
 
 // QueryMissingEvents implements api.RoomserverInternalAPI
-// nolint:gocyclo
 func (r *Queryer) QueryMissingEvents(
 	ctx context.Context,
 	request *api.QueryMissingEventsRequest,

roomserver/state/state.go

@@ -770,7 +770,6 @@ func (v *StateResolution) resolveConflictsV1(
 // Returns a list that combines the entries without conflicts with the result of state resolution for the entries with conflicts.
 // The returned list is sorted by state key tuple.
 // Returns an error if there was a problem talking to the database.
-// nolint:gocyclo
 func (v *StateResolution) resolveConflictsV2(
 	ctx context.Context,
 	notConflicted, conflicted []types.StateEntry,

roomserver/storage/postgres/deltas/20201028212440_add_forgotten_column.go

@@ -24,6 +24,7 @@ import (
 
 func LoadFromGoose() {
 	goose.AddMigration(UpAddForgottenColumn, DownAddForgottenColumn)
+	goose.AddMigration(UpStateBlocksRefactor, DownStateBlocksRefactor)
 }
 
 func LoadAddForgottenColumn(m *sqlutil.Migrations) {

roomserver/storage/postgres/deltas/2021041615092700_state_blocks_refactor.go

@@ -0,0 +1,223 @@
+// 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 deltas
+
+import (
+	"database/sql"
+	"fmt"
+
+	"github.com/lib/pq"
+	"github.com/matrix-org/dendrite/internal/sqlutil"
+	"github.com/matrix-org/dendrite/roomserver/types"
+	"github.com/matrix-org/util"
+	"github.com/sirupsen/logrus"
+)
+
+type stateSnapshotData struct {
+	StateSnapshotNID types.StateSnapshotNID
+	RoomNID          types.RoomNID
+}
+
+type stateBlockData struct {
+	stateSnapshotData
+	StateBlockNID types.StateBlockNID
+	EventNIDs     types.EventNIDs
+}
+
+func LoadStateBlocksRefactor(m *sqlutil.Migrations) {
+	m.AddMigration(UpStateBlocksRefactor, DownStateBlocksRefactor)
+}
+
+// nolint:gocyclo
+func UpStateBlocksRefactor(tx *sql.Tx) error {
+	logrus.Warn("Performing state storage upgrade. Please wait, this may take some time!")
+	defer logrus.Warn("State storage upgrade complete")
+
+	var snapshotcount int
+	var maxsnapshotid int
+	var maxblockid int
+	if err := tx.QueryRow(`SELECT COUNT(DISTINCT state_snapshot_nid) FROM roomserver_state_snapshots;`).Scan(&snapshotcount); err != nil {
+		return fmt.Errorf("tx.QueryRow.Scan (count snapshots): %w", err)
+	}
+	if err := tx.QueryRow(`SELECT COALESCE(MAX(state_snapshot_nid),0) FROM roomserver_state_snapshots;`).Scan(&maxsnapshotid); err != nil {
+		return fmt.Errorf("tx.QueryRow.Scan (count snapshots): %w", err)
+	}
+	if err := tx.QueryRow(`SELECT COALESCE(MAX(state_block_nid),0) FROM roomserver_state_block;`).Scan(&maxblockid); err != nil {
+		return fmt.Errorf("tx.QueryRow.Scan (count snapshots): %w", err)
+	}
+	maxsnapshotid++
+	maxblockid++
+
+	if _, err := tx.Exec(`ALTER TABLE roomserver_state_block RENAME TO _roomserver_state_block;`); err != nil {
+		return fmt.Errorf("tx.Exec: %w", err)
+	}
+	if _, err := tx.Exec(`ALTER TABLE roomserver_state_snapshots RENAME TO _roomserver_state_snapshots;`); err != nil {
+		return fmt.Errorf("tx.Exec: %w", err)
+	}
+	// We create new sequences starting with the maximum state snapshot and block NIDs.
+	// This means that all newly created snapshots and blocks by the migration will have
+	// NIDs higher than these values, so that when we come to update the references to
+	// these NIDs using UPDATE statements, we can guarantee we are only ever updating old
+	// values and not accidentally overwriting new ones.
+	if _, err := tx.Exec(fmt.Sprintf(`CREATE SEQUENCE roomserver_state_block_nid_sequence START WITH %d;`, maxblockid)); err != nil {
+		return fmt.Errorf("tx.Exec: %w", err)
+	}
+	if _, err := tx.Exec(fmt.Sprintf(`CREATE SEQUENCE roomserver_state_snapshot_nid_sequence START WITH %d;`, maxsnapshotid)); err != nil {
+		return fmt.Errorf("tx.Exec: %w", err)
+	}
+	_, err := tx.Exec(`
+		CREATE TABLE IF NOT EXISTS roomserver_state_block (
+			state_block_nid bigint PRIMARY KEY DEFAULT nextval('roomserver_state_block_nid_sequence'),
+			state_block_hash BYTEA UNIQUE,
+			event_nids bigint[] NOT NULL
+		);
+	`)
+	if err != nil {
+		return fmt.Errorf("tx.Exec (create blocks table): %w", err)
+	}
+	_, err = tx.Exec(`
+		CREATE TABLE IF NOT EXISTS roomserver_state_snapshots (
+			state_snapshot_nid bigint PRIMARY KEY DEFAULT nextval('roomserver_state_snapshot_nid_sequence'),
+			state_snapshot_hash BYTEA UNIQUE,
+			room_nid bigint NOT NULL,
+			state_block_nids bigint[] NOT NULL
+		);
+	`)
+	if err != nil {
+		return fmt.Errorf("tx.Exec (create snapshots table): %w", err)
+	}
+	logrus.Warn("New tables created...")
+
+	batchsize := 100
+	for batchoffset := 0; batchoffset < snapshotcount; batchoffset += batchsize {
+		var snapshotrows *sql.Rows
+		snapshotrows, err = tx.Query(`
+			SELECT
+				state_snapshot_nid,
+				room_nid,
+				state_block_nid,
+				ARRAY_AGG(event_nid) AS event_nids
+			FROM (
+				SELECT
+					_roomserver_state_snapshots.state_snapshot_nid,
+					_roomserver_state_snapshots.room_nid,
+					_roomserver_state_block.state_block_nid,
+					_roomserver_state_block.event_nid
+				FROM
+					_roomserver_state_snapshots
+					JOIN _roomserver_state_block ON _roomserver_state_block.state_block_nid = ANY (_roomserver_state_snapshots.state_block_nids)
+				WHERE
+					_roomserver_state_snapshots.state_snapshot_nid = ANY ( SELECT DISTINCT
+							_roomserver_state_snapshots.state_snapshot_nid
+						FROM
+							_roomserver_state_snapshots
+						LIMIT $1 OFFSET $2)) AS _roomserver_state_block
+			GROUP BY
+				state_snapshot_nid,
+				room_nid,
+				state_block_nid;
+		`, batchsize, batchoffset)
+		if err != nil {
+			return fmt.Errorf("tx.Query: %w", err)
+		}
+
+		logrus.Warnf("Rewriting snapshots %d-%d of %d...", batchoffset, batchoffset+batchsize, snapshotcount)
+		var snapshots []stateBlockData
+
+		for snapshotrows.Next() {
+			var snapshot stateBlockData
+			var eventsarray pq.Int64Array
+			if err = snapshotrows.Scan(&snapshot.StateSnapshotNID, &snapshot.RoomNID, &snapshot.StateBlockNID, &eventsarray); err != nil {
+				return fmt.Errorf("rows.Scan: %w", err)
+			}
+			for _, e := range eventsarray {
+				snapshot.EventNIDs = append(snapshot.EventNIDs, types.EventNID(e))
+			}
+			snapshot.EventNIDs = snapshot.EventNIDs[:util.SortAndUnique(snapshot.EventNIDs)]
+			snapshots = append(snapshots, snapshot)
+		}
+
+		if err = snapshotrows.Close(); err != nil {
+			return fmt.Errorf("snapshots.Close: %w", err)
+		}
+
+		newsnapshots := map[stateSnapshotData]types.StateBlockNIDs{}
+
+		for _, snapshot := range snapshots {
+			var eventsarray pq.Int64Array
+			for _, e := range snapshot.EventNIDs {
+				eventsarray = append(eventsarray, int64(e))
+			}
+
+			var blocknid types.StateBlockNID
+			err = tx.QueryRow(`
+				INSERT INTO roomserver_state_block (state_block_hash, event_nids)
+					VALUES ($1, $2)
+					ON CONFLICT (state_block_hash) DO UPDATE SET event_nids=$2
+					RETURNING state_block_nid
+			`, snapshot.EventNIDs.Hash(), eventsarray).Scan(&blocknid)
+			if err != nil {
+				return fmt.Errorf("tx.QueryRow.Scan (insert new block with %d events): %w", len(eventsarray), err)
+			}
+			index := stateSnapshotData{snapshot.StateSnapshotNID, snapshot.RoomNID}
+			newsnapshots[index] = append(newsnapshots[index], blocknid)
+		}
+
+		for snapshotdata, newblocks := range newsnapshots {
+			var newblocksarray pq.Int64Array
+			for _, b := range newblocks {
+				newblocksarray = append(newblocksarray, int64(b))
+			}
+
+			var newNID types.StateSnapshotNID
+			err = tx.QueryRow(`
+				INSERT INTO roomserver_state_snapshots (state_snapshot_hash, room_nid, state_block_nids)
+					VALUES ($1, $2, $3)
+					ON CONFLICT (state_snapshot_hash) DO UPDATE SET room_nid=$2
+					RETURNING state_snapshot_nid
+			`, newblocks.Hash(), snapshotdata.RoomNID, newblocksarray).Scan(&newNID)
+			if err != nil {
+				return fmt.Errorf("tx.QueryRow.Scan (insert new snapshot): %w", err)
+			}
+
+			if _, err = tx.Exec(`UPDATE roomserver_events SET state_snapshot_nid=$1 WHERE state_snapshot_nid=$2 AND state_snapshot_nid<$3`, newNID, snapshotdata.StateSnapshotNID, maxsnapshotid); err != nil {
+				return fmt.Errorf("tx.Exec (update events): %w", err)
+			}
+
+			if _, err = tx.Exec(`UPDATE roomserver_rooms SET state_snapshot_nid=$1 WHERE state_snapshot_nid=$2 AND state_snapshot_nid<$3`, newNID, snapshotdata.StateSnapshotNID, maxsnapshotid); err != nil {
+				return fmt.Errorf("tx.Exec (update rooms): %w", err)
+			}
+		}
+	}
+
+	if _, err = tx.Exec(`
+		DROP TABLE _roomserver_state_snapshots;
+		DROP SEQUENCE roomserver_state_snapshot_nid_seq;
+	`); err != nil {
+		return fmt.Errorf("tx.Exec (delete old snapshot table): %w", err)
+	}
+	if _, err = tx.Exec(`
+		DROP TABLE _roomserver_state_block;
+		DROP SEQUENCE roomserver_state_block_nid_seq;
+	`); err != nil {
+		return fmt.Errorf("tx.Exec (delete old block table): %w", err)
+	}
+
+	return nil
+}
+
+func DownStateBlocksRefactor(tx *sql.Tx) error {
+	panic("Downgrading state storage is not supported")
+}

roomserver/storage/postgres/event_json_table.go

@@ -59,12 +59,14 @@ type eventJSONStatements struct {
 	bulkSelectEventJSONStmt *sql.Stmt
 }
 
-func NewPostgresEventJSONTable(db *sql.DB) (tables.EventJSON, error) {
-	s := &eventJSONStatements{}
+func createEventJSONTable(db *sql.DB) error {
 	_, err := db.Exec(eventJSONSchema)
-	if err != nil {
-		return nil, err
-	}
+	return err
+}
+
+func prepareEventJSONTable(db *sql.DB) (tables.EventJSON, error) {
+	s := &eventJSONStatements{}
+
 	return s, shared.StatementList{
 		{&s.insertEventJSONStmt, insertEventJSONSQL},
 		{&s.bulkSelectEventJSONStmt, bulkSelectEventJSONSQL},

roomserver/storage/postgres/event_state_keys_table.go

@@ -77,12 +77,14 @@ type eventStateKeyStatements struct {
 	bulkSelectEventStateKeyStmt    *sql.Stmt
 }
 
-func NewPostgresEventStateKeysTable(db *sql.DB) (tables.EventStateKeys, error) {
-	s := &eventStateKeyStatements{}
+func createEventStateKeysTable(db *sql.DB) error {
 	_, err := db.Exec(eventStateKeysSchema)
-	if err != nil {
-		return nil, err
-	}
+	return err
+}
+
+func prepareEventStateKeysTable(db *sql.DB) (tables.EventStateKeys, error) {
+	s := &eventStateKeyStatements{}
+
 	return s, shared.StatementList{
 		{&s.insertEventStateKeyNIDStmt, insertEventStateKeyNIDSQL},
 		{&s.selectEventStateKeyNIDStmt, selectEventStateKeyNIDSQL},

roomserver/storage/postgres/event_types_table.go

@@ -100,12 +100,13 @@ type eventTypeStatements struct {
 	bulkSelectEventTypeNIDStmt *sql.Stmt
 }
 
-func NewPostgresEventTypesTable(db *sql.DB) (tables.EventTypes, error) {
-	s := &eventTypeStatements{}
+func createEventTypesTable(db *sql.DB) error {
 	_, err := db.Exec(eventTypesSchema)
-	if err != nil {
-		return nil, err
-	}
+	return err
+}
+
+func prepareEventTypesTable(db *sql.DB) (tables.EventTypes, error) {
+	s := &eventTypeStatements{}
 
 	return s, shared.StatementList{
 		{&s.insertEventTypeNIDStmt, insertEventTypeNIDSQL},

roomserver/storage/postgres/events_table.go

@@ -19,6 +19,7 @@ import (
 	"context"
 	"database/sql"
 	"fmt"
+	"sort"
 
 	"github.com/lib/pq"
 	"github.com/matrix-org/dendrite/internal"
@@ -88,6 +89,16 @@ const bulkSelectStateEventByIDSQL = "" +
 	" WHERE event_id = ANY($1)" +
 	" ORDER BY event_type_nid, event_state_key_nid ASC"
 
+// Bulk look up of events by event NID, optionally filtering by the event type
+// or event state key NIDs if provided. (The CARDINALITY check will return true
+// if the provided arrays are empty, ergo no filtering).
+const bulkSelectStateEventByNIDSQL = "" +
+	"SELECT event_type_nid, event_state_key_nid, event_nid FROM roomserver_events" +
+	" WHERE event_nid = ANY($1)" +
+	" AND (CARDINALITY($2::bigint[]) = 0 OR event_type_nid = ANY($2))" +
+	" AND (CARDINALITY($3::bigint[]) = 0 OR event_state_key_nid = ANY($3))" +
+	" ORDER BY event_type_nid, event_state_key_nid ASC"
+
 const bulkSelectStateAtEventByIDSQL = "" +
 	"SELECT event_type_nid, event_state_key_nid, event_nid, state_snapshot_nid, is_rejected FROM roomserver_events" +
 	" WHERE event_id = ANY($1)"
@@ -127,6 +138,7 @@ type eventStatements struct {
 	insertEventStmt                        *sql.Stmt
 	selectEventStmt                        *sql.Stmt
 	bulkSelectStateEventByIDStmt           *sql.Stmt
+	bulkSelectStateEventByNIDStmt          *sql.Stmt
 	bulkSelectStateAtEventByIDStmt         *sql.Stmt
 	updateEventStateStmt                   *sql.Stmt
 	selectEventSentToOutputStmt            *sql.Stmt
@@ -140,17 +152,19 @@ type eventStatements struct {
 	selectRoomNIDsForEventNIDsStmt         *sql.Stmt
 }
 
-func NewPostgresEventsTable(db *sql.DB) (tables.Events, error) {
-	s := &eventStatements{}
+func createEventsTable(db *sql.DB) error {
 	_, err := db.Exec(eventsSchema)
-	if err != nil {
-		return nil, err
-	}
+	return err
+}
+
+func prepareEventsTable(db *sql.DB) (tables.Events, error) {
+	s := &eventStatements{}
 
 	return s, shared.StatementList{
 		{&s.insertEventStmt, insertEventSQL},
 		{&s.selectEventStmt, selectEventSQL},
 		{&s.bulkSelectStateEventByIDStmt, bulkSelectStateEventByIDSQL},
+		{&s.bulkSelectStateEventByNIDStmt, bulkSelectStateEventByNIDSQL},
 		{&s.bulkSelectStateAtEventByIDStmt, bulkSelectStateAtEventByIDSQL},
 		{&s.updateEventStateStmt, updateEventStateSQL},
 		{&s.updateEventSentToOutputStmt, updateEventSentToOutputSQL},
@@ -238,6 +252,42 @@ func (s *eventStatements) BulkSelectStateEventByID(
 	return results, nil
 }
 
+// bulkSelectStateEventByNID lookups a list of state events by event NID.
+// If any of the requested events are missing from the database it returns a types.MissingEventError
+func (s *eventStatements) BulkSelectStateEventByNID(
+	ctx context.Context, eventNIDs []types.EventNID,
+	stateKeyTuples []types.StateKeyTuple,
+) ([]types.StateEntry, error) {
+	tuples := stateKeyTupleSorter(stateKeyTuples)
+	sort.Sort(tuples)
+	eventTypeNIDArray, eventStateKeyNIDArray := tuples.typesAndStateKeysAsArrays()
+	rows, err := s.bulkSelectStateEventByNIDStmt.QueryContext(ctx, eventNIDsAsArray(eventNIDs), eventTypeNIDArray, eventStateKeyNIDArray)
+	if err != nil {
+		return nil, err
+	}
+	defer internal.CloseAndLogIfError(ctx, rows, "bulkSelectStateEventByID: rows.close() failed")
+	// We know that we will only get as many results as event IDs
+	// because of the unique constraint on event IDs.
+	// So we can allocate an array of the correct size now.
+	// We might get fewer results than IDs so we adjust the length of the slice before returning it.
+	results := make([]types.StateEntry, len(eventNIDs))
+	i := 0
+	for ; rows.Next(); i++ {
+		result := &results[i]
+		if err = rows.Scan(
+			&result.EventTypeNID,
+			&result.EventStateKeyNID,
+			&result.EventNID,
+		); err != nil {
+			return nil, err
+		}
+	}
+	if err = rows.Err(); err != nil {
+		return nil, err
+	}
+	return results[:i], nil
+}
+
 // bulkSelectStateAtEventByID lookups the state at a list of events by event ID.
 // If any of the requested events are missing from the database it returns a types.MissingEventError.
 // If we do not have the state for any of the requested events it returns a types.MissingEventError.

roomserver/storage/postgres/invite_table.go

@@ -82,12 +82,13 @@ type inviteStatements struct {
 	updateInviteRetiredStmt             *sql.Stmt
 }
 
-func NewPostgresInvitesTable(db *sql.DB) (tables.Invites, error) {
-	s := &inviteStatements{}
+func createInvitesTable(db *sql.DB) error {
 	_, err := db.Exec(inviteSchema)
-	if err != nil {
-		return nil, err
-	}
+	return err
+}
+
+func prepareInvitesTable(db *sql.DB) (tables.Invites, error) {
+	s := &inviteStatements{}
 
 	return s, shared.StatementList{
 		{&s.insertInviteEventStmt, insertInviteEventSQL},

roomserver/storage/postgres/membership_table.go

@@ -139,12 +139,13 @@ type membershipStatements struct {
 	updateMembershipForgetRoomStmt                  *sql.Stmt
 }
 
-func NewPostgresMembershipTable(db *sql.DB) (tables.Membership, error) {
-	s := &membershipStatements{}
+func createMembershipTable(db *sql.DB) error {
 	_, err := db.Exec(membershipSchema)
-	if err != nil {
-		return nil, err
-	}
+	return err
+}
+
+func prepareMembershipTable(db *sql.DB) (tables.Membership, error) {
+	s := &membershipStatements{}
 
 	return s, shared.StatementList{
 		{&s.insertMembershipStmt, insertMembershipSQL},
@@ -162,11 +163,6 @@ func NewPostgresMembershipTable(db *sql.DB) (tables.Membership, error) {
 	}.Prepare(db)
 }
 
-func (s *membershipStatements) execSchema(db *sql.DB) error {
-	_, err := db.Exec(membershipSchema)
-	return err
-}
-
 func (s *membershipStatements) InsertMembership(
 	ctx context.Context,
 	txn *sql.Tx, roomNID types.RoomNID, targetUserNID types.EventStateKeyNID,

roomserver/storage/postgres/previous_events_table.go

@@ -65,12 +65,13 @@ type previousEventStatements struct {
 	selectPreviousEventExistsStmt *sql.Stmt
 }
 
-func NewPostgresPreviousEventsTable(db *sql.DB) (tables.PreviousEvents, error) {
-	s := &previousEventStatements{}
+func createPrevEventsTable(db *sql.DB) error {
 	_, err := db.Exec(previousEventSchema)
-	if err != nil {
-		return nil, err
-	}
+	return err
+}
+
+func preparePrevEventsTable(db *sql.DB) (tables.PreviousEvents, error) {
+	s := &previousEventStatements{}
 
 	return s, shared.StatementList{
 		{&s.insertPreviousEventStmt, insertPreviousEventSQL},

roomserver/storage/postgres/published_table.go

@@ -50,12 +50,14 @@ type publishedStatements struct {
 	selectPublishedStmt    *sql.Stmt
 }
 
-func NewPostgresPublishedTable(db *sql.DB) (tables.Published, error) {
-	s := &publishedStatements{}
+func createPublishedTable(db *sql.DB) error {
 	_, err := db.Exec(publishedSchema)
-	if err != nil {
-		return nil, err
-	}
+	return err
+}
+
+func preparePublishedTable(db *sql.DB) (tables.Published, error) {
+	s := &publishedStatements{}
+
 	return s, shared.StatementList{
 		{&s.upsertPublishedStmt, upsertPublishedSQL},
 		{&s.selectAllPublishedStmt, selectAllPublishedSQL},

roomserver/storage/postgres/redactions_table.go

@@ -60,12 +60,13 @@ type redactionStatements struct {
 	markRedactionValidatedStmt                  *sql.Stmt
 }
 
-func NewPostgresRedactionsTable(db *sql.DB) (tables.Redactions, error) {
-	s := &redactionStatements{}
+func createRedactionsTable(db *sql.DB) error {
 	_, err := db.Exec(redactionsSchema)
-	if err != nil {
-		return nil, err
-	}
+	return err
+}
+
+func prepareRedactionsTable(db *sql.DB) (tables.Redactions, error) {
+	s := &redactionStatements{}
 
 	return s, shared.StatementList{
 		{&s.insertRedactionStmt, insertRedactionSQL},

roomserver/storage/postgres/room_aliases_table.go

@@ -62,12 +62,14 @@ type roomAliasesStatements struct {
 	deleteRoomAliasStmt          *sql.Stmt
 }
 
-func NewPostgresRoomAliasesTable(db *sql.DB) (tables.RoomAliases, error) {
-	s := &roomAliasesStatements{}
+func createRoomAliasesTable(db *sql.DB) error {
 	_, err := db.Exec(roomAliasesSchema)
-	if err != nil {
-		return nil, err
-	}
+	return err
+}
+
+func prepareRoomAliasesTable(db *sql.DB) (tables.RoomAliases, error) {
+	s := &roomAliasesStatements{}
+
 	return s, shared.StatementList{
 		{&s.insertRoomAliasStmt, insertRoomAliasSQL},
 		{&s.selectRoomIDFromAliasStmt, selectRoomIDFromAliasSQL},

roomserver/storage/postgres/rooms_table.go

@@ -96,12 +96,14 @@ type roomStatements struct {
 	bulkSelectRoomNIDsStmt             *sql.Stmt
 }
 
-func NewPostgresRoomsTable(db *sql.DB) (tables.Rooms, error) {
-	s := &roomStatements{}
+func createRoomsTable(db *sql.DB) error {
 	_, err := db.Exec(roomsSchema)
-	if err != nil {
-		return nil, err
-	}
+	return err
+}
+
+func prepareRoomsTable(db *sql.DB) (tables.Rooms, error) {
+	s := &roomStatements{}
+
 	return s, shared.StatementList{
 		{&s.insertRoomNIDStmt, insertRoomNIDSQL},
 		{&s.selectRoomNIDStmt, selectRoomNIDSQL},

roomserver/storage/postgres/state_block_table.go

@@ -41,141 +41,88 @@ const stateDataSchema = `
 -- which in turn makes it easier to merge state data blocks.
 CREATE SEQUENCE IF NOT EXISTS roomserver_state_block_nid_seq;
 CREATE TABLE IF NOT EXISTS roomserver_state_block (
-    -- Local numeric ID for this state data.
-    state_block_nid bigint NOT NULL,
-    event_type_nid bigint NOT NULL,
-    event_state_key_nid bigint NOT NULL,
-    event_nid bigint NOT NULL,
-    UNIQUE (state_block_nid, event_type_nid, event_state_key_nid)
+	-- The state snapshot NID that identifies this snapshot.
+	state_block_nid bigint PRIMARY KEY DEFAULT nextval('roomserver_state_block_nid_seq'),
+	-- The hash of the state block, which is used to enforce uniqueness. The hash is
+	-- generated in Dendrite and passed through to the database, as a btree index over 
+	-- this column is cheap and fits within the maximum index size.
+	state_block_hash BYTEA UNIQUE,
+	-- The event NIDs contained within the state block.
+	event_nids bigint[] NOT NULL
 );
 `
 
+// Insert a new state block. If we conflict on the hash column then
+// we must perform an update so that the RETURNING statement returns the
+// ID of the row that we conflicted with, so that we can then refer to
+// the original block.
 const insertStateDataSQL = "" +
-	"INSERT INTO roomserver_state_block (state_block_nid, event_type_nid, event_state_key_nid, event_nid)" +
-	" VALUES ($1, $2, $3, $4)"
+	"INSERT INTO roomserver_state_block (state_block_hash, event_nids)" +
+	" VALUES ($1, $2)" +
+	" ON CONFLICT (state_block_hash) DO UPDATE SET event_nids=$2" +
+	" RETURNING state_block_nid"
 
-const selectNextStateBlockNIDSQL = "" +
-	"SELECT nextval('roomserver_state_block_nid_seq')"
-
-// Bulk state lookup by numeric state block ID.
-// Sort by the state_block_nid, event_type_nid, event_state_key_nid
-// This means that all the entries for a given state_block_nid will appear
-// together in the list and those entries will sorted by event_type_nid
-// and event_state_key_nid. This property makes it easier to merge two
-// state data blocks together.
 const bulkSelectStateBlockEntriesSQL = "" +
-	"SELECT state_block_nid, event_type_nid, event_state_key_nid, event_nid" +
-	" FROM roomserver_state_block WHERE state_block_nid = ANY($1)" +
-	" ORDER BY state_block_nid, event_type_nid, event_state_key_nid"
-
-// Bulk state lookup by numeric state block ID.
-// Filters the rows in each block to the requested types and state keys.
-// We would like to restrict to particular type state key pairs but we are
-// restricted by the query language to pull the cross product of a list
-// of types and a list state_keys. So we have to filter the result in the
-// application to restrict it to the list of event types and state keys we
-// actually wanted.
-const bulkSelectFilteredStateBlockEntriesSQL = "" +
-	"SELECT state_block_nid, event_type_nid, event_state_key_nid, event_nid" +
-	" FROM roomserver_state_block WHERE state_block_nid = ANY($1)" +
-	" AND event_type_nid = ANY($2) AND event_state_key_nid = ANY($3)" +
-	" ORDER BY state_block_nid, event_type_nid, event_state_key_nid"
+	"SELECT state_block_nid, event_nids" +
+	" FROM roomserver_state_block WHERE state_block_nid = ANY($1)"
 
 type stateBlockStatements struct {
-	insertStateDataStmt                     *sql.Stmt
-	selectNextStateBlockNIDStmt             *sql.Stmt
-	bulkSelectStateBlockEntriesStmt         *sql.Stmt
-	bulkSelectFilteredStateBlockEntriesStmt *sql.Stmt
+	insertStateDataStmt             *sql.Stmt
+	bulkSelectStateBlockEntriesStmt *sql.Stmt
 }
 
-func NewPostgresStateBlockTable(db *sql.DB) (tables.StateBlock, error) {
-	s := &stateBlockStatements{}
+func createStateBlockTable(db *sql.DB) error {
 	_, err := db.Exec(stateDataSchema)
-	if err != nil {
-		return nil, err
-	}
+	return err
+}
+
+func prepareStateBlockTable(db *sql.DB) (tables.StateBlock, error) {
+	s := &stateBlockStatements{}
 
 	return s, shared.StatementList{
 		{&s.insertStateDataStmt, insertStateDataSQL},
-		{&s.selectNextStateBlockNIDStmt, selectNextStateBlockNIDSQL},
 		{&s.bulkSelectStateBlockEntriesStmt, bulkSelectStateBlockEntriesSQL},
-		{&s.bulkSelectFilteredStateBlockEntriesStmt, bulkSelectFilteredStateBlockEntriesSQL},
 	}.Prepare(db)
 }
 
 func (s *stateBlockStatements) BulkInsertStateData(
 	ctx context.Context,
 	txn *sql.Tx,
-	entries []types.StateEntry,
-) (types.StateBlockNID, error) {
-	stateBlockNID, err := s.selectNextStateBlockNID(ctx)
-	if err != nil {
-		return 0, err
+	entries types.StateEntries,
+) (id types.StateBlockNID, err error) {
+	entries = entries[:util.SortAndUnique(entries)]
+	var nids types.EventNIDs
+	for _, e := range entries {
+		nids = append(nids, e.EventNID)
 	}
-	for _, entry := range entries {
-		_, err := s.insertStateDataStmt.ExecContext(
-			ctx,
-			int64(stateBlockNID),
-			int64(entry.EventTypeNID),
-			int64(entry.EventStateKeyNID),
-			int64(entry.EventNID),
-		)
-		if err != nil {
-			return 0, err
-		}
-	}
-	return stateBlockNID, nil
-}
-
-func (s *stateBlockStatements) selectNextStateBlockNID(
-	ctx context.Context,
-) (types.StateBlockNID, error) {
-	var stateBlockNID int64
-	err := s.selectNextStateBlockNIDStmt.QueryRowContext(ctx).Scan(&stateBlockNID)
-	return types.StateBlockNID(stateBlockNID), err
+	err = s.insertStateDataStmt.QueryRowContext(
+		ctx, nids.Hash(), eventNIDsAsArray(nids),
+	).Scan(&id)
+	return
 }
 
 func (s *stateBlockStatements) BulkSelectStateBlockEntries(
-	ctx context.Context, stateBlockNIDs []types.StateBlockNID,
-) ([]types.StateEntryList, error) {
-	nids := make([]int64, len(stateBlockNIDs))
-	for i := range stateBlockNIDs {
-		nids[i] = int64(stateBlockNIDs[i])
-	}
-	rows, err := s.bulkSelectStateBlockEntriesStmt.QueryContext(ctx, pq.Int64Array(nids))
+	ctx context.Context, stateBlockNIDs types.StateBlockNIDs,
+) ([][]types.EventNID, error) {
+	rows, err := s.bulkSelectStateBlockEntriesStmt.QueryContext(ctx, stateBlockNIDsAsArray(stateBlockNIDs))
 	if err != nil {
 		return nil, err
 	}
 	defer internal.CloseAndLogIfError(ctx, rows, "bulkSelectStateBlockEntries: rows.close() failed")
 
-	results := make([]types.StateEntryList, len(stateBlockNIDs))
-	// current is a pointer to the StateEntryList to append the state entries to.
-	var current *types.StateEntryList
+	results := make([][]types.EventNID, len(stateBlockNIDs))
 	i := 0
-	for rows.Next() {
-		var (
-			stateBlockNID    int64
-			eventTypeNID     int64
-			eventStateKeyNID int64
-			eventNID         int64
-			entry            types.StateEntry
-		)
-		if err = rows.Scan(
-			&stateBlockNID, &eventTypeNID, &eventStateKeyNID, &eventNID,
-		); err != nil {
+	for ; rows.Next(); i++ {
+		var stateBlockNID types.StateBlockNID
+		var result pq.Int64Array
+		if err = rows.Scan(&stateBlockNID, &result); err != nil {
 			return nil, err
 		}
-		entry.EventTypeNID = types.EventTypeNID(eventTypeNID)
-		entry.EventStateKeyNID = types.EventStateKeyNID(eventStateKeyNID)
-		entry.EventNID = types.EventNID(eventNID)
-		if current == nil || types.StateBlockNID(stateBlockNID) != current.StateBlockNID {
-			// The state entry row is for a different state data block to the current one.
-			// So we start appending to the next entry in the list.
-			current = &results[i]
-			current.StateBlockNID = types.StateBlockNID(stateBlockNID)
-			i++
+		r := []types.EventNID{}
+		for _, e := range result {
+			r = append(r, types.EventNID(e))
 		}
-		current.StateEntries = append(current.StateEntries, entry)
+		results[i] = r
 	}
 	if err = rows.Err(); err != nil {
 		return nil, err
@@ -186,71 +133,6 @@ func (s *stateBlockStatements) BulkSelectStateBlockEntries(
 	return results, err
 }
 
-func (s *stateBlockStatements) BulkSelectFilteredStateBlockEntries(
-	ctx context.Context,
-	stateBlockNIDs []types.StateBlockNID,
-	stateKeyTuples []types.StateKeyTuple,
-) ([]types.StateEntryList, error) {
-	tuples := stateKeyTupleSorter(stateKeyTuples)
-	// Sort the tuples so that we can run binary search against them as we filter the rows returned by the db.
-	sort.Sort(tuples)
-
-	eventTypeNIDArray, eventStateKeyNIDArray := tuples.typesAndStateKeysAsArrays()
-	rows, err := s.bulkSelectFilteredStateBlockEntriesStmt.QueryContext(
-		ctx,
-		stateBlockNIDsAsArray(stateBlockNIDs),
-		eventTypeNIDArray,
-		eventStateKeyNIDArray,
-	)
-	if err != nil {
-		return nil, err
-	}
-	defer internal.CloseAndLogIfError(ctx, rows, "bulkSelectFilteredStateBlockEntries: rows.close() failed")
-
-	var results []types.StateEntryList
-	var current types.StateEntryList
-	for rows.Next() {
-		var (
-			stateBlockNID    int64
-			eventTypeNID     int64
-			eventStateKeyNID int64
-			eventNID         int64
-			entry            types.StateEntry
-		)
-		if err := rows.Scan(
-			&stateBlockNID, &eventTypeNID, &eventStateKeyNID, &eventNID,
-		); err != nil {
-			return nil, err
-		}
-		entry.EventTypeNID = types.EventTypeNID(eventTypeNID)
-		entry.EventStateKeyNID = types.EventStateKeyNID(eventStateKeyNID)
-		entry.EventNID = types.EventNID(eventNID)
-
-		// We can use binary search here because we sorted the tuples earlier
-		if !tuples.contains(entry.StateKeyTuple) {
-			// The select will return the cross product of types and state keys.
-			// So we need to check if type of the entry is in the list.
-			continue
-		}
-
-		if types.StateBlockNID(stateBlockNID) != current.StateBlockNID {
-			// The state entry row is for a different state data block to the current one.
-			// So we append the current entry to the results and start adding to a new one.
-			// The first time through the loop current will be empty.
-			if current.StateEntries != nil {
-				results = append(results, current)
-			}
-			current = types.StateEntryList{StateBlockNID: types.StateBlockNID(stateBlockNID)}
-		}
-		current.StateEntries = append(current.StateEntries, entry)
-	}
-	// Add the last entry to the list if it is not empty.
-	if current.StateEntries != nil {
-		results = append(results, current)
-	}
-	return results, rows.Err()
-}
-
 func stateBlockNIDsAsArray(stateBlockNIDs []types.StateBlockNID) pq.Int64Array {
 	nids := make([]int64, len(stateBlockNIDs))
 	for i := range stateBlockNIDs {

roomserver/storage/postgres/state_snapshot_table.go

@@ -25,6 +25,7 @@ import (
 	"github.com/matrix-org/dendrite/roomserver/storage/shared"
 	"github.com/matrix-org/dendrite/roomserver/storage/tables"
 	"github.com/matrix-org/dendrite/roomserver/types"
+	"github.com/matrix-org/util"
 )
 
 const stateSnapshotSchema = `
@@ -40,19 +41,29 @@ const stateSnapshotSchema = `
 -- the full state under single state_block_nid.
 CREATE SEQUENCE IF NOT EXISTS roomserver_state_snapshot_nid_seq;
 CREATE TABLE IF NOT EXISTS roomserver_state_snapshots (
-    -- Local numeric ID for the state.
-    state_snapshot_nid bigint PRIMARY KEY DEFAULT nextval('roomserver_state_snapshot_nid_seq'),
-    -- Local numeric ID of the room this state is for.
-    -- Unused in normal operation, but useful for background work or ad-hoc debugging.
-    room_nid bigint NOT NULL,
-    -- List of state_block_nids, stored sorted by state_block_nid.
-    state_block_nids bigint[] NOT NULL
+	-- The state snapshot NID that identifies this snapshot.
+	state_snapshot_nid bigint PRIMARY KEY DEFAULT nextval('roomserver_state_snapshot_nid_seq'),
+	-- The hash of the state snapshot, which is used to enforce uniqueness. The hash is
+	-- generated in Dendrite and passed through to the database, as a btree index over 
+	-- this column is cheap and fits within the maximum index size.
+	state_snapshot_hash BYTEA UNIQUE,
+	-- The room NID that the snapshot belongs to.
+	room_nid bigint NOT NULL,
+	-- The state blocks contained within this snapshot.
+	state_block_nids bigint[] NOT NULL
 );
 `
 
+// Insert a new state snapshot. If we conflict on the hash column then
+// we must perform an update so that the RETURNING statement returns the
+// ID of the row that we conflicted with, so that we can then refer to
+// the original snapshot.
 const insertStateSQL = "" +
-	"INSERT INTO roomserver_state_snapshots (room_nid, state_block_nids)" +
-	" VALUES ($1, $2)" +
+	"INSERT INTO roomserver_state_snapshots (state_snapshot_hash, room_nid, state_block_nids)" +
+	" VALUES ($1, $2, $3)" +
+	" ON CONFLICT (state_snapshot_hash) DO UPDATE SET room_nid=$2" +
+	// Performing an update, above, ensures that the RETURNING statement
+	// below will always return a valid state snapshot ID
 	" RETURNING state_snapshot_nid"
 
 // Bulk state data NID lookup.
@@ -67,12 +78,13 @@ type stateSnapshotStatements struct {
 	bulkSelectStateBlockNIDsStmt *sql.Stmt
 }
 
-func NewPostgresStateSnapshotTable(db *sql.DB) (tables.StateSnapshot, error) {
-	s := &stateSnapshotStatements{}
+func createStateSnapshotTable(db *sql.DB) error {
 	_, err := db.Exec(stateSnapshotSchema)
-	if err != nil {
-		return nil, err
-	}
+	return err
+}
+
+func prepareStateSnapshotTable(db *sql.DB) (tables.StateSnapshot, error) {
+	s := &stateSnapshotStatements{}
 
 	return s, shared.StatementList{
 		{&s.insertStateStmt, insertStateSQL},
@@ -81,13 +93,15 @@ func NewPostgresStateSnapshotTable(db *sql.DB) (tables.StateSnapshot, error) {
 }
 
 func (s *stateSnapshotStatements) InsertState(
-	ctx context.Context, txn *sql.Tx, roomNID types.RoomNID, stateBlockNIDs []types.StateBlockNID,
+	ctx context.Context, txn *sql.Tx, roomNID types.RoomNID, nids types.StateBlockNIDs,
 ) (stateNID types.StateSnapshotNID, err error) {
-	nids := make([]int64, len(stateBlockNIDs))
-	for i := range stateBlockNIDs {
-		nids[i] = int64(stateBlockNIDs[i])
+	nids = nids[:util.SortAndUnique(nids)]
+	var id int64
+	err = sqlutil.TxStmt(txn, s.insertStateStmt).QueryRowContext(ctx, nids.Hash(), int64(roomNID), stateBlockNIDsAsArray(nids)).Scan(&id)
+	if err != nil {
+		return 0, err
 	}
-	err = sqlutil.TxStmt(txn, s.insertStateStmt).QueryRowContext(ctx, int64(roomNID), pq.Int64Array(nids)).Scan(&stateNID)
+	stateNID = types.StateSnapshotNID(id)
 	return
 }
 

roomserver/storage/postgres/storage.go

@@ -17,6 +17,7 @@ package postgres
 
 import (
 	"database/sql"
+	"fmt"
 
 	// Import the postgres database driver.
 	_ "github.com/lib/pq"
@@ -39,20 +40,25 @@ func Open(dbProperties *config.DatabaseOptions, cache caching.RoomServerCaches)
 	var db *sql.DB
 	var err error
 	if db, err = sqlutil.Open(dbProperties); err != nil {
+		return nil, fmt.Errorf("sqlutil.Open: %w", err)
+	}
+
+	// Create the tables.
+	if err := d.create(db); err != nil {
 		return nil, err
 	}
 
-	// Create tables before executing migrations so we don't fail if the table is missing,
-	// and THEN prepare statements so we don't fail due to referencing new columns
-	ms := membershipStatements{}
-	if err := ms.execSchema(db); err != nil {
-		return nil, err
-	}
+	// Then execute the migrations. By this point the tables are created with the latest
+	// schemas.
 	m := sqlutil.NewMigrations()
 	deltas.LoadAddForgottenColumn(m)
+	deltas.LoadStateBlocksRefactor(m)
 	if err := m.RunDeltas(db, dbProperties); err != nil {
 		return nil, err
 	}
+
+	// Then prepare the statements. Now that the migrations have run, any columns referred
+	// to in the database code should now exist.
 	if err := d.prepare(db, cache); err != nil {
 		return nil, err
 	}
@@ -60,61 +66,107 @@ func Open(dbProperties *config.DatabaseOptions, cache caching.RoomServerCaches)
 	return &d, nil
 }
 
-// nolint: gocyclo
-func (d *Database) prepare(db *sql.DB, cache caching.RoomServerCaches) (err error) {
-	eventStateKeys, err := NewPostgresEventStateKeysTable(db)
+func (d *Database) create(db *sql.DB) error {
+	if err := createEventStateKeysTable(db); err != nil {
+		return err
+	}
+	if err := createEventTypesTable(db); err != nil {
+		return err
+	}
+	if err := createEventJSONTable(db); err != nil {
+		return err
+	}
+	if err := createEventsTable(db); err != nil {
+		return err
+	}
+	if err := createRoomsTable(db); err != nil {
+		return err
+	}
+	if err := createTransactionsTable(db); err != nil {
+		return err
+	}
+	if err := createStateBlockTable(db); err != nil {
+		return err
+	}
+	if err := createStateSnapshotTable(db); err != nil {
+		return err
+	}
+	if err := createPrevEventsTable(db); err != nil {
+		return err
+	}
+	if err := createRoomAliasesTable(db); err != nil {
+		return err
+	}
+	if err := createInvitesTable(db); err != nil {
+		return err
+	}
+	if err := createMembershipTable(db); err != nil {
+		return err
+	}
+	if err := createPublishedTable(db); err != nil {
+		return err
+	}
+	if err := createRedactionsTable(db); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (d *Database) prepare(db *sql.DB, cache caching.RoomServerCaches) error {
+	eventStateKeys, err := prepareEventStateKeysTable(db)
 	if err != nil {
 		return err
 	}
-	eventTypes, err := NewPostgresEventTypesTable(db)
+	eventTypes, err := prepareEventTypesTable(db)
 	if err != nil {
 		return err
 	}
-	eventJSON, err := NewPostgresEventJSONTable(db)
+	eventJSON, err := prepareEventJSONTable(db)
 	if err != nil {
 		return err
 	}
-	events, err := NewPostgresEventsTable(db)
+	events, err := prepareEventsTable(db)
 	if err != nil {
 		return err
 	}
-	rooms, err := NewPostgresRoomsTable(db)
+	rooms, err := prepareRoomsTable(db)
 	if err != nil {
 		return err
 	}
-	transactions, err := NewPostgresTransactionsTable(db)
+	transactions, err := prepareTransactionsTable(db)
 	if err != nil {
 		return err
 	}
-	stateBlock, err := NewPostgresStateBlockTable(db)
+	stateBlock, err := prepareStateBlockTable(db)
 	if err != nil {
 		return err
 	}
-	stateSnapshot, err := NewPostgresStateSnapshotTable(db)
+	stateSnapshot, err := prepareStateSnapshotTable(db)
 	if err != nil {
 		return err
 	}
-	roomAliases, err := NewPostgresRoomAliasesTable(db)
+	prevEvents, err := preparePrevEventsTable(db)
 	if err != nil {
 		return err
 	}
-	prevEvents, err := NewPostgresPreviousEventsTable(db)
+	roomAliases, err := prepareRoomAliasesTable(db)
 	if err != nil {
 		return err
 	}
-	invites, err := NewPostgresInvitesTable(db)
+	invites, err := prepareInvitesTable(db)
 	if err != nil {
 		return err
 	}
-	membership, err := NewPostgresMembershipTable(db)
+	membership, err := prepareMembershipTable(db)
 	if err != nil {
 		return err
 	}
-	published, err := NewPostgresPublishedTable(db)
+	published, err := preparePublishedTable(db)
 	if err != nil {
 		return err
 	}
-	redactions, err := NewPostgresRedactionsTable(db)
+	redactions, err := prepareRedactionsTable(db)
 	if err != nil {
 		return err
 	}

roomserver/storage/postgres/transactions_table.go

@@ -54,12 +54,13 @@ type transactionStatements struct {
 	selectTransactionEventIDStmt *sql.Stmt
 }
 
-func NewPostgresTransactionsTable(db *sql.DB) (tables.Transactions, error) {
-	s := &transactionStatements{}
+func createTransactionsTable(db *sql.DB) error {
 	_, err := db.Exec(transactionsSchema)
-	if err != nil {
-		return nil, err
-	}
+	return err
+}
+
+func prepareTransactionsTable(db *sql.DB) (tables.Transactions, error) {
+	s := &transactionStatements{}
 
 	return s, shared.StatementList{
 		{&s.insertTransactionStmt, insertTransactionSQL},

roomserver/storage/shared/storage.go

@@ -118,9 +118,24 @@ func (d *Database) StateEntriesForTuples(
 	stateBlockNIDs []types.StateBlockNID,
 	stateKeyTuples []types.StateKeyTuple,
 ) ([]types.StateEntryList, error) {
-	return d.StateBlockTable.BulkSelectFilteredStateBlockEntries(
-		ctx, stateBlockNIDs, stateKeyTuples,
+	entries, err := d.StateBlockTable.BulkSelectStateBlockEntries(
+		ctx, stateBlockNIDs,
 	)
+	if err != nil {
+		return nil, fmt.Errorf("d.StateBlockTable.BulkSelectStateBlockEntries: %w", err)
+	}
+	lists := []types.StateEntryList{}
+	for i, entry := range entries {
+		entries, err := d.EventsTable.BulkSelectStateEventByNID(ctx, entry, stateKeyTuples)
+		if err != nil {
+			return nil, fmt.Errorf("d.EventsTable.BulkSelectStateEventByNID: %w", err)
+		}
+		lists = append(lists, types.StateEntryList{
+			StateBlockNID: stateBlockNIDs[i],
+			StateEntries:  entries,
+		})
+	}
+	return lists, nil
 }
 
 func (d *Database) RoomInfo(ctx context.Context, roomID string) (*types.RoomInfo, error) {
@@ -141,8 +156,28 @@ func (d *Database) AddState(
 	stateBlockNIDs []types.StateBlockNID,
 	state []types.StateEntry,
 ) (stateNID types.StateSnapshotNID, err error) {
+	if len(stateBlockNIDs) > 0 {
+		// Check to see if the event already appears in any of the existing state
+		// blocks. If it does then we should not add it again, as this will just
+		// result in excess state blocks and snapshots.
+		// TODO: Investigate why this is happening - probably input_events.go!
+		blocks, berr := d.StateBlockTable.BulkSelectStateBlockEntries(ctx, stateBlockNIDs)
+		if berr != nil {
+			return 0, fmt.Errorf("d.StateBlockTable.BulkSelectStateBlockEntries: %w", berr)
+		}
+		for i := len(state) - 1; i >= 0; i-- {
+			for _, events := range blocks {
+				for _, event := range events {
+					if state[i].EventNID == event {
+						state = append(state[:i], state[i+1:]...)
+					}
+				}
+			}
+		}
+	}
 	err = d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
 		if len(state) > 0 {
+			// If there's any state left to add then let's add new blocks.
 			var stateBlockNID types.StateBlockNID
 			stateBlockNID, err = d.StateBlockTable.BulkInsertStateData(ctx, txn, state)
 			if err != nil {
@@ -237,7 +272,24 @@ func (d *Database) StateBlockNIDs(
 func (d *Database) StateEntries(
 	ctx context.Context, stateBlockNIDs []types.StateBlockNID,
 ) ([]types.StateEntryList, error) {
-	return d.StateBlockTable.BulkSelectStateBlockEntries(ctx, stateBlockNIDs)
+	entries, err := d.StateBlockTable.BulkSelectStateBlockEntries(
+		ctx, stateBlockNIDs,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("d.StateBlockTable.BulkSelectStateBlockEntries: %w", err)
+	}
+	lists := make([]types.StateEntryList, 0, len(entries))
+	for i, entry := range entries {
+		eventNIDs, err := d.EventsTable.BulkSelectStateEventByNID(ctx, entry, nil)
+		if err != nil {
+			return nil, fmt.Errorf("d.EventsTable.BulkSelectStateEventByNID: %w", err)
+		}
+		lists = append(lists, types.StateEntryList{
+			StateBlockNID: stateBlockNIDs[i],
+			StateEntries:  eventNIDs,
+		})
+	}
+	return lists, nil
 }
 
 func (d *Database) SetRoomAlias(ctx context.Context, alias string, roomID string, creatorUserID string) error {
@@ -412,7 +464,6 @@ func (d *Database) GetLatestEventsForUpdate(
 	return updater, err
 }
 
-// nolint:gocyclo
 func (d *Database) StoreEvent(
 	ctx context.Context, event *gomatrixserverlib.Event,
 	txnAndSessionID *api.TransactionID, authEventNIDs []types.EventNID, isRejected bool,
@@ -672,7 +723,6 @@ func extractRoomVersionFromCreateEvent(event *gomatrixserverlib.Event) (
 // to cross-reference with other tables when loading.
 //
 // Returns the redaction event and the event ID of the redacted event if this call resulted in a redaction.
-// nolint:gocyclo
 func (d *Database) handleRedactions(
 	ctx context.Context, txn *sql.Tx, eventNID types.EventNID, event *gomatrixserverlib.Event,
 ) (*gomatrixserverlib.Event, string, error) {
@@ -802,7 +852,6 @@ func (d *Database) loadEvent(ctx context.Context, eventID string) *types.Event {
 // GetStateEvent returns the current state event of a given type for a given room with a given state key
 // If no event could be found, returns nil
 // If there was an issue during the retrieval, returns an error
-// nolint:gocyclo
 func (d *Database) GetStateEvent(ctx context.Context, roomID, evType, stateKey string) (*gomatrixserverlib.HeaderedEvent, error) {
 	roomInfo, err := d.RoomInfo(ctx, roomID)
 	if err != nil {
@@ -893,7 +942,6 @@ func (d *Database) GetRoomsByMembership(ctx context.Context, userID, membership
 
 // GetBulkStateContent returns all state events which match a given room ID and a given state key tuple. Both must be satisfied for a match.
 // If a tuple has the StateKey of '*' and allowWildcards=true then all state events with the EventType should be returned.
-// nolint:gocyclo
 func (d *Database) GetBulkStateContent(ctx context.Context, roomIDs []string, tuples []gomatrixserverlib.StateKeyTuple, allowWildcards bool) ([]tables.StrippedEvent, error) {
 	eventTypes := make([]string, 0, len(tuples))
 	for _, tuple := range tuples {

roomserver/storage/sqlite3/deltas/20201028212440_add_forgotten_column.go

@@ -24,6 +24,7 @@ import (
 
 func LoadFromGoose() {
 	goose.AddMigration(UpAddForgottenColumn, DownAddForgottenColumn)
+	goose.AddMigration(UpStateBlocksRefactor, DownStateBlocksRefactor)
 }
 
 func LoadAddForgottenColumn(m *sqlutil.Migrations) {

roomserver/storage/sqlite3/deltas/2021041615092700_state_blocks_refactor.go

@@ -0,0 +1,168 @@
+// 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 deltas
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"fmt"
+
+	"github.com/matrix-org/dendrite/internal"
+	"github.com/matrix-org/dendrite/internal/sqlutil"
+	"github.com/matrix-org/dendrite/roomserver/types"
+	"github.com/matrix-org/util"
+	"github.com/sirupsen/logrus"
+)
+
+func LoadStateBlocksRefactor(m *sqlutil.Migrations) {
+	m.AddMigration(UpStateBlocksRefactor, DownStateBlocksRefactor)
+}
+
+func UpStateBlocksRefactor(tx *sql.Tx) error {
+	logrus.Warn("Performing state storage upgrade. Please wait, this may take some time!")
+	defer logrus.Warn("State storage upgrade complete")
+
+	var maxsnapshotid int
+	var maxblockid int
+	if err := tx.QueryRow(`SELECT IFNULL(MAX(state_snapshot_nid),0) FROM roomserver_state_snapshots;`).Scan(&maxsnapshotid); err != nil {
+		return fmt.Errorf("tx.QueryRow.Scan (count snapshots): %w", err)
+	}
+	if err := tx.QueryRow(`SELECT IFNULL(MAX(state_block_nid),0) FROM roomserver_state_block;`).Scan(&maxblockid); err != nil {
+		return fmt.Errorf("tx.QueryRow.Scan (count snapshots): %w", err)
+	}
+	maxsnapshotid++
+	maxblockid++
+
+	if _, err := tx.Exec(`ALTER TABLE roomserver_state_block RENAME TO _roomserver_state_block;`); err != nil {
+		return fmt.Errorf("tx.Exec: %w", err)
+	}
+	if _, err := tx.Exec(`ALTER TABLE roomserver_state_snapshots RENAME TO _roomserver_state_snapshots;`); err != nil {
+		return fmt.Errorf("tx.Exec: %w", err)
+	}
+	_, err := tx.Exec(`
+		CREATE TABLE IF NOT EXISTS roomserver_state_block (
+			state_block_nid INTEGER PRIMARY KEY AUTOINCREMENT,
+			state_block_hash BLOB UNIQUE,
+			event_nids TEXT NOT NULL DEFAULT '[]'
+		);
+	`)
+	if err != nil {
+		return fmt.Errorf("tx.Exec: %w", err)
+	}
+	_, err = tx.Exec(`
+		CREATE TABLE IF NOT EXISTS roomserver_state_snapshots (
+			state_snapshot_nid INTEGER PRIMARY KEY AUTOINCREMENT,
+			state_snapshot_hash BLOB UNIQUE,
+			room_nid INTEGER NOT NULL,
+			state_block_nids TEXT NOT NULL DEFAULT '[]'
+	  	);
+	`)
+	if err != nil {
+		return fmt.Errorf("tx.Exec: %w", err)
+	}
+	snapshotrows, err := tx.Query(`SELECT state_snapshot_nid, room_nid, state_block_nids FROM _roomserver_state_snapshots;`)
+	if err != nil {
+		return fmt.Errorf("tx.Query: %w", err)
+	}
+	defer internal.CloseAndLogIfError(context.TODO(), snapshotrows, "rows.close() failed")
+	for snapshotrows.Next() {
+		var snapshot types.StateSnapshotNID
+		var room types.RoomNID
+		var jsonblocks string
+		var blocks []types.StateBlockNID
+		if err = snapshotrows.Scan(&snapshot, &room, &jsonblocks); err != nil {
+			return fmt.Errorf("rows.Scan: %w", err)
+		}
+		if err = json.Unmarshal([]byte(jsonblocks), &blocks); err != nil {
+			return fmt.Errorf("json.Unmarshal: %w", err)
+		}
+
+		var newblocks types.StateBlockNIDs
+		for _, block := range blocks {
+			if err = func() error {
+				blockrows, berr := tx.Query(`SELECT event_nid FROM _roomserver_state_block WHERE state_block_nid = $1`, block)
+				if berr != nil {
+					return fmt.Errorf("tx.Query (event nids from old block): %w", berr)
+				}
+				defer internal.CloseAndLogIfError(context.TODO(), blockrows, "rows.close() failed")
+				events := types.EventNIDs{}
+				for blockrows.Next() {
+					var event types.EventNID
+					if err = blockrows.Scan(&event); err != nil {
+						return fmt.Errorf("rows.Scan: %w", err)
+					}
+					events = append(events, event)
+				}
+				events = events[:util.SortAndUnique(events)]
+				eventjson, eerr := json.Marshal(events)
+				if eerr != nil {
+					return fmt.Errorf("json.Marshal: %w", eerr)
+				}
+
+				var blocknid types.StateBlockNID
+				err = tx.QueryRow(`
+					INSERT INTO roomserver_state_block (state_block_nid, state_block_hash, event_nids)
+						VALUES ($1, $2, $3)
+						ON CONFLICT (state_block_hash) DO UPDATE SET event_nids=$3
+						RETURNING state_block_nid
+				`, maxblockid, events.Hash(), eventjson).Scan(&blocknid)
+				if err != nil {
+					return fmt.Errorf("tx.QueryRow.Scan (insert new block): %w", err)
+				}
+				maxblockid++
+				newblocks = append(newblocks, blocknid)
+				return nil
+			}(); err != nil {
+				return err
+			}
+
+			newblocksjson, jerr := json.Marshal(newblocks)
+			if jerr != nil {
+				return fmt.Errorf("json.Marshal (new blocks): %w", jerr)
+			}
+			var newsnapshot types.StateSnapshotNID
+			err = tx.QueryRow(`
+				INSERT INTO roomserver_state_snapshots (state_snapshot_nid, state_snapshot_hash, room_nid, state_block_nids)
+					VALUES ($1, $2, $3, $4)
+					ON CONFLICT (state_snapshot_hash) DO UPDATE SET room_nid=$3
+					RETURNING state_snapshot_nid
+			`, maxsnapshotid, newblocks.Hash(), room, newblocksjson).Scan(&newsnapshot)
+			if err != nil {
+				return fmt.Errorf("tx.QueryRow.Scan (insert new snapshot): %w", err)
+			}
+			maxsnapshotid++
+			if _, err = tx.Exec(`UPDATE roomserver_events SET state_snapshot_nid=$1 WHERE state_snapshot_nid=$2 AND state_snapshot_nid<$3`, newsnapshot, snapshot, maxsnapshotid); err != nil {
+				return fmt.Errorf("tx.Exec (update events): %w", err)
+			}
+			if _, err = tx.Exec(`UPDATE roomserver_rooms SET state_snapshot_nid=$1 WHERE state_snapshot_nid=$2 AND state_snapshot_nid<$3`, newsnapshot, snapshot, maxsnapshotid); err != nil {
+				return fmt.Errorf("tx.Exec (update rooms): %w", err)
+			}
+		}
+	}
+
+	if _, err = tx.Exec(`DROP TABLE _roomserver_state_snapshots;`); err != nil {
+		return fmt.Errorf("tx.Exec (delete old snapshot table): %w", err)
+	}
+	if _, err = tx.Exec(`DROP TABLE _roomserver_state_block;`); err != nil {
+		return fmt.Errorf("tx.Exec (delete old block table): %w", err)
+	}
+
+	return nil
+}
+
+func DownStateBlocksRefactor(tx *sql.Tx) error {
+	panic("Downgrading state storage is not supported")
+}

roomserver/storage/sqlite3/event_json_table.go

@@ -53,14 +53,16 @@ type eventJSONStatements struct {
 	bulkSelectEventJSONStmt *sql.Stmt
 }
 
-func NewSqliteEventJSONTable(db *sql.DB) (tables.EventJSON, error) {
+func createEventJSONTable(db *sql.DB) error {
+	_, err := db.Exec(eventJSONSchema)
+	return err
+}
+
+func prepareEventJSONTable(db *sql.DB) (tables.EventJSON, error) {
 	s := &eventJSONStatements{
 		db: db,
 	}
-	_, err := db.Exec(eventJSONSchema)
-	if err != nil {
-		return nil, err
-	}
+
 	return s, shared.StatementList{
 		{&s.insertEventJSONStmt, insertEventJSONSQL},
 		{&s.bulkSelectEventJSONStmt, bulkSelectEventJSONSQL},

roomserver/storage/sqlite3/event_state_keys_table.go

@@ -70,14 +70,16 @@ type eventStateKeyStatements struct {
 	bulkSelectEventStateKeyStmt    *sql.Stmt
 }
 
-func NewSqliteEventStateKeysTable(db *sql.DB) (tables.EventStateKeys, error) {
+func createEventStateKeysTable(db *sql.DB) error {
+	_, err := db.Exec(eventStateKeysSchema)
+	return err
+}
+
+func prepareEventStateKeysTable(db *sql.DB) (tables.EventStateKeys, error) {
 	s := &eventStateKeyStatements{
 		db: db,
 	}
-	_, err := db.Exec(eventStateKeysSchema)
-	if err != nil {
-		return nil, err
-	}
+
 	return s, shared.StatementList{
 		{&s.insertEventStateKeyNIDStmt, insertEventStateKeyNIDSQL},
 		{&s.selectEventStateKeyNIDStmt, selectEventStateKeyNIDSQL},

roomserver/storage/sqlite3/event_types_table.go

@@ -85,14 +85,15 @@ type eventTypeStatements struct {
 	bulkSelectEventTypeNIDStmt   *sql.Stmt
 }
 
-func NewSqliteEventTypesTable(db *sql.DB) (tables.EventTypes, error) {
+func createEventTypesTable(db *sql.DB) error {
+	_, err := db.Exec(eventTypesSchema)
+	return err
+}
+
+func prepareEventTypesTable(db *sql.DB) (tables.EventTypes, error) {
 	s := &eventTypeStatements{
 		db: db,
 	}
-	_, err := db.Exec(eventTypesSchema)
-	if err != nil {
-		return nil, err
-	}
 
 	return s, shared.StatementList{
 		{&s.insertEventTypeNIDStmt, insertEventTypeNIDSQL},

roomserver/storage/sqlite3/events_table.go

@@ -20,6 +20,7 @@ import (
 	"database/sql"
 	"encoding/json"
 	"fmt"
+	"sort"
 	"strings"
 
 	"github.com/matrix-org/dendrite/internal"
@@ -63,6 +64,11 @@ const bulkSelectStateEventByIDSQL = "" +
 	" WHERE event_id IN ($1)" +
 	" ORDER BY event_type_nid, event_state_key_nid ASC"
 
+const bulkSelectStateEventByNIDSQL = "" +
+	"SELECT event_type_nid, event_state_key_nid, event_nid FROM roomserver_events" +
+	" WHERE event_nid IN ($1)"
+	// Rest of query is built by BulkSelectStateEventByNID
+
 const bulkSelectStateAtEventByIDSQL = "" +
 	"SELECT event_type_nid, event_state_key_nid, event_nid, state_snapshot_nid, is_rejected FROM roomserver_events" +
 	" WHERE event_id IN ($1)"
@@ -115,14 +121,15 @@ type eventStatements struct {
 	//selectRoomNIDsForEventNIDsStmt           *sql.Stmt
 }
 
-func NewSqliteEventsTable(db *sql.DB) (tables.Events, error) {
+func createEventsTable(db *sql.DB) error {
+	_, err := db.Exec(eventsSchema)
+	return err
+}
+
+func prepareEventsTable(db *sql.DB) (tables.Events, error) {
 	s := &eventStatements{
 		db: db,
 	}
-	_, err := db.Exec(eventsSchema)
-	if err != nil {
-		return nil, err
-	}
 
 	return s, shared.StatementList{
 		{&s.insertEventStmt, insertEventSQL},
@@ -232,6 +239,61 @@ func (s *eventStatements) BulkSelectStateEventByID(
 	return results, err
 }
 
+// bulkSelectStateEventByID lookups a list of state events by event ID.
+// If any of the requested events are missing from the database it returns a types.MissingEventError
+func (s *eventStatements) BulkSelectStateEventByNID(
+	ctx context.Context, eventNIDs []types.EventNID,
+	stateKeyTuples []types.StateKeyTuple,
+) ([]types.StateEntry, error) {
+	tuples := stateKeyTupleSorter(stateKeyTuples)
+	sort.Sort(tuples)
+	eventTypeNIDArray, eventStateKeyNIDArray := tuples.typesAndStateKeysAsArrays()
+	params := make([]interface{}, 0, len(eventNIDs)+len(eventTypeNIDArray)+len(eventStateKeyNIDArray))
+	selectOrig := strings.Replace(bulkSelectStateEventByNIDSQL, "($1)", sqlutil.QueryVariadic(len(eventNIDs)), 1)
+	for _, v := range eventNIDs {
+		params = append(params, v)
+	}
+	if len(eventTypeNIDArray) > 0 {
+		selectOrig += " AND event_type_nid IN " + sqlutil.QueryVariadicOffset(len(eventTypeNIDArray), len(params))
+		for _, v := range eventTypeNIDArray {
+			params = append(params, v)
+		}
+	}
+	if len(eventStateKeyNIDArray) > 0 {
+		selectOrig += " AND event_state_key_nid IN " + sqlutil.QueryVariadicOffset(len(eventStateKeyNIDArray), len(params))
+		for _, v := range eventStateKeyNIDArray {
+			params = append(params, v)
+		}
+	}
+	selectOrig += " ORDER BY event_type_nid, event_state_key_nid ASC"
+	selectStmt, err := s.db.Prepare(selectOrig)
+	if err != nil {
+		return nil, fmt.Errorf("s.db.Prepare: %w", err)
+	}
+	rows, err := selectStmt.QueryContext(ctx, params...)
+	if err != nil {
+		return nil, fmt.Errorf("selectStmt.QueryContext: %w", err)
+	}
+	defer internal.CloseAndLogIfError(ctx, rows, "bulkSelectStateEventByID: rows.close() failed")
+	// We know that we will only get as many results as event IDs
+	// because of the unique constraint on event IDs.
+	// So we can allocate an array of the correct size now.
+	// We might get fewer results than IDs so we adjust the length of the slice before returning it.
+	results := make([]types.StateEntry, len(eventNIDs))
+	i := 0
+	for ; rows.Next(); i++ {
+		result := &results[i]
+		if err = rows.Scan(
+			&result.EventTypeNID,
+			&result.EventStateKeyNID,
+			&result.EventNID,
+		); err != nil {
+			return nil, err
+		}
+	}
+	return results[:i], err
+}
+
 // bulkSelectStateAtEventByID lookups the state at a list of events by event ID.
 // If any of the requested events are missing from the database it returns a types.MissingEventError.
 // If we do not have the state for any of the requested events it returns a types.MissingEventError.

roomserver/storage/sqlite3/invite_table.go

@@ -70,14 +70,15 @@ type inviteStatements struct {
 	selectInvitesAboutToRetireStmt      *sql.Stmt
 }
 
-func NewSqliteInvitesTable(db *sql.DB) (tables.Invites, error) {
+func createInvitesTable(db *sql.DB) error {
+	_, err := db.Exec(inviteSchema)
+	return err
+}
+
+func prepareInvitesTable(db *sql.DB) (tables.Invites, error) {
 	s := &inviteStatements{
 		db: db,
 	}
-	_, err := db.Exec(inviteSchema)
-	if err != nil {
-		return nil, err
-	}
 
 	return s, shared.StatementList{
 		{&s.insertInviteEventStmt, insertInviteEventSQL},

roomserver/storage/sqlite3/membership_table.go

@@ -115,7 +115,12 @@ type membershipStatements struct {
 	updateMembershipForgetRoomStmt                  *sql.Stmt
 }
 
-func NewSqliteMembershipTable(db *sql.DB) (tables.Membership, error) {
+func createMembershipTable(db *sql.DB) error {
+	_, err := db.Exec(membershipSchema)
+	return err
+}
+
+func prepareMembershipTable(db *sql.DB) (tables.Membership, error) {
 	s := &membershipStatements{
 		db: db,
 	}
@@ -135,11 +140,6 @@ func NewSqliteMembershipTable(db *sql.DB) (tables.Membership, error) {
 	}.Prepare(db)
 }
 
-func (s *membershipStatements) execSchema(db *sql.DB) error {
-	_, err := db.Exec(membershipSchema)
-	return err
-}
-
 func (s *membershipStatements) InsertMembership(
 	ctx context.Context, txn *sql.Tx,
 	roomNID types.RoomNID, targetUserNID types.EventStateKeyNID,

roomserver/storage/sqlite3/previous_events_table.go

@@ -71,14 +71,15 @@ type previousEventStatements struct {
 	selectPreviousEventExistsStmt *sql.Stmt
 }
 
-func NewSqlitePrevEventsTable(db *sql.DB) (tables.PreviousEvents, error) {
+func createPrevEventsTable(db *sql.DB) error {
+	_, err := db.Exec(previousEventSchema)
+	return err
+}
+
+func preparePrevEventsTable(db *sql.DB) (tables.PreviousEvents, error) {
 	s := &previousEventStatements{
 		db: db,
 	}
-	_, err := db.Exec(previousEventSchema)
-	if err != nil {
-		return nil, err
-	}
 
 	return s, shared.StatementList{
 		{&s.insertPreviousEventStmt, insertPreviousEventSQL},