Make syncapi use userapi (#1136)

* Make syncapi use userapi

* Unbreak things

* Fix tests

* Lint

cmd/dendrite-sync-api-server/main.go

@@ -25,12 +25,11 @@ func main() {
 	defer base.Close() // nolint: errcheck
 
 	userAPI := base.UserAPIClient()
-	accountDB := base.CreateAccountsDB()
 	federation := base.CreateFederationClient()
 
 	rsAPI := base.RoomserverHTTPClient()
 
-	syncapi.AddPublicRoutes(base.PublicAPIMux, base.KafkaConsumer, userAPI, accountDB, rsAPI, federation, cfg)
+	syncapi.AddPublicRoutes(base.PublicAPIMux, base.KafkaConsumer, userAPI, rsAPI, federation, cfg)
 
 	base.SetupAndServeHTTP(string(base.Cfg.Bind.SyncAPI), string(base.Cfg.Listen.SyncAPI))
 

docs/WIRING-Current.md

@@ -39,6 +39,8 @@ Internal only               |                               `-------------------
 - 12 (FedSender -> ServerKeyAPI): Verifying event signatures of responses (e.g from send_join)
 - 13 (Roomserver -> ServerKeyAPI): Verifying event signatures of backfilled events
 
+In addition to this, all public facing components (Tier 1) talk to the `UserAPI` to verify access tokens and extract profile information where needed.
+
 ## Kafka logs
 
 ```

internal/setup/monolith.go

@@ -87,6 +87,6 @@ func (m *Monolith) AddAllPublicRoutes(publicMux *mux.Router) {
 		m.ExtPublicRoomsProvider,
 	)
 	syncapi.AddPublicRoutes(
-		publicMux, m.KafkaConsumer, m.UserAPI, m.AccountDB, m.RoomserverAPI, m.FedClient, m.Config,
+		publicMux, m.KafkaConsumer, m.UserAPI, m.RoomserverAPI, m.FedClient, m.Config,
 	)
 }

syncapi/sync/requestpool.go

@@ -21,7 +21,6 @@ import (
 	"net/http"
 	"time"
 
-	"github.com/matrix-org/dendrite/clientapi/auth/storage/accounts"
 	"github.com/matrix-org/dendrite/clientapi/jsonerror"
 	"github.com/matrix-org/dendrite/syncapi/storage"
 	"github.com/matrix-org/dendrite/syncapi/types"
@@ -34,13 +33,13 @@ import (
 // RequestPool manages HTTP long-poll connections for /sync
 type RequestPool struct {
 	db       storage.Database
-	accountDB accounts.Database
+	userAPI  userapi.UserInternalAPI
 	notifier *Notifier
 }
 
 // NewRequestPool makes a new RequestPool
-func NewRequestPool(db storage.Database, n *Notifier, adb accounts.Database) *RequestPool {
+func NewRequestPool(db storage.Database, n *Notifier, userAPI userapi.UserInternalAPI) *RequestPool {
-	return &RequestPool{db, adb, n}
+	return &RequestPool{db, userAPI, n}
 }
 
 // OnIncomingSyncRequest is called when a client makes a /sync request. This function MUST be
@@ -193,6 +192,7 @@ func (rp *RequestPool) currentSyncForUser(req syncRequest, latestPos types.Strea
 	return
 }
 
+// nolint:gocyclo
 func (rp *RequestPool) appendAccountData(
 	data *types.Response, userID string, req syncRequest, currentPos types.StreamPosition,
 	accountDataFilter *gomatrixserverlib.EventFilter,
@@ -202,25 +202,21 @@ func (rp *RequestPool) appendAccountData(
 	// data keys were set between two message. This isn't a huge issue since the
 	// duplicate data doesn't represent a huge quantity of data, but an optimisation
 	// here would be making sure each data is sent only once to the client.
-	localpart, _, err := gomatrixserverlib.SplitID('@', userID)
-	if err != nil {
-		return nil, err
-	}
-
 	if req.since == nil {
 		// If this is the initial sync, we don't need to check if a data has
 		// already been sent. Instead, we send the whole batch.
-		var global []gomatrixserverlib.ClientEvent
+		var res userapi.QueryAccountDataResponse
-		var rooms map[string][]gomatrixserverlib.ClientEvent
+		err := rp.userAPI.QueryAccountData(req.ctx, &userapi.QueryAccountDataRequest{
-		global, rooms, err = rp.accountDB.GetAccountData(req.ctx, localpart)
+			UserID: userID,
+		}, &res)
 		if err != nil {
 			return nil, err
 		}
-		data.AccountData.Events = global
+		data.AccountData.Events = res.GlobalAccountData
 
 		for r, j := range data.Rooms.Join {
-			if len(rooms[r]) > 0 {
+			if len(res.RoomAccountData[r]) > 0 {
-				j.AccountData.Events = rooms[r]
+				j.AccountData.Events = res.RoomAccountData[r]
 				data.Rooms.Join[r] = j
 			}
 		}
@@ -256,13 +252,20 @@ func (rp *RequestPool) appendAccountData(
 		events := []gomatrixserverlib.ClientEvent{}
 		// Request the missing data from the database
 		for _, dataType := range dataTypes {
-			event, err := rp.accountDB.GetAccountDataByType(
+			var res userapi.QueryAccountDataResponse
-				req.ctx, localpart, roomID, dataType,
+			err = rp.userAPI.QueryAccountData(req.ctx, &userapi.QueryAccountDataRequest{
-			)
+				UserID:   userID,
+				RoomID:   roomID,
+				DataType: dataType,
+			}, &res)
 			if err != nil {
 				return nil, err
 			}
-			events = append(events, *event)
+			if len(res.RoomAccountData[roomID]) > 0 {
+				events = append(events, res.RoomAccountData[roomID]...)
+			} else if len(res.GlobalAccountData) > 0 {
+				events = append(events, res.GlobalAccountData...)
+			}
 		}
 
 		// Append the data to the response

syncapi/syncapi.go

@@ -21,7 +21,6 @@ import (
 	"github.com/gorilla/mux"
 	"github.com/sirupsen/logrus"
 
-	"github.com/matrix-org/dendrite/clientapi/auth/storage/accounts"
 	"github.com/matrix-org/dendrite/internal/config"
 	"github.com/matrix-org/dendrite/roomserver/api"
 	userapi "github.com/matrix-org/dendrite/userapi/api"
@@ -39,7 +38,6 @@ func AddPublicRoutes(
 	router *mux.Router,
 	consumer sarama.Consumer,
 	userAPI userapi.UserInternalAPI,
-	accountsDB accounts.Database,
 	rsAPI api.RoomserverInternalAPI,
 	federation *gomatrixserverlib.FederationClient,
 	cfg *config.Dendrite,
@@ -60,7 +58,7 @@ func AddPublicRoutes(
 		logrus.WithError(err).Panicf("failed to start notifier")
 	}
 
-	requestPool := sync.NewRequestPool(syncDB, notifier, accountsDB)
+	requestPool := sync.NewRequestPool(syncDB, notifier, userAPI)
 
 	roomConsumer := consumers.NewOutputRoomEventConsumer(
 		cfg, consumer, notifier, syncDB, rsAPI,

userapi/api/api.go

@@ -14,13 +14,18 @@
 
 package api
 
-import "context"
+import (
+	"context"
+
+	"github.com/matrix-org/gomatrixserverlib"
+)
 
 // UserInternalAPI is the internal API for information about users and devices.
 type UserInternalAPI interface {
 	QueryProfile(ctx context.Context, req *QueryProfileRequest, res *QueryProfileResponse) error
 	QueryAccessToken(ctx context.Context, req *QueryAccessTokenRequest, res *QueryAccessTokenResponse) error
 	QueryDevices(ctx context.Context, req *QueryDevicesRequest, res *QueryDevicesResponse) error
+	QueryAccountData(ctx context.Context, req *QueryAccountDataRequest, res *QueryAccountDataResponse) error
 }
 
 // QueryAccessTokenRequest is the request for QueryAccessToken
@@ -37,6 +42,22 @@ type QueryAccessTokenResponse struct {
 	Err    error // e.g ErrorForbidden
 }
 
+// QueryAccountDataRequest is the request for QueryAccountData
+type QueryAccountDataRequest struct {
+	UserID string // required: the user to get account data for.
+	// TODO: This is a terribly confusing API shape :/
+	DataType string // optional: if specified returns only a single event matching this data type.
+	// optional: Only used if DataType is set. If blank returns global account data matching the data type.
+	// If set, returns only room account data matching this data type.
+	RoomID string
+}
+
+// QueryAccountDataResponse is the response for QueryAccountData
+type QueryAccountDataResponse struct {
+	GlobalAccountData []gomatrixserverlib.ClientEvent
+	RoomAccountData   map[string][]gomatrixserverlib.ClientEvent
+}
+
 // QueryDevicesRequest is the request for QueryDevices
 type QueryDevicesRequest struct {
 	UserID string

userapi/internal/api.go

@@ -73,6 +73,39 @@ func (a *UserInternalAPI) QueryDevices(ctx context.Context, req *api.QueryDevice
 	return nil
 }
 
+func (a *UserInternalAPI) QueryAccountData(ctx context.Context, req *api.QueryAccountDataRequest, res *api.QueryAccountDataResponse) error {
+	local, domain, err := gomatrixserverlib.SplitID('@', req.UserID)
+	if err != nil {
+		return err
+	}
+	if domain != a.ServerName {
+		return fmt.Errorf("cannot query account data of remote users: got %s want %s", domain, a.ServerName)
+	}
+	if req.DataType != "" {
+		var event *gomatrixserverlib.ClientEvent
+		event, err = a.AccountDB.GetAccountDataByType(ctx, local, req.RoomID, req.DataType)
+		if err != nil {
+			return err
+		}
+		if event != nil {
+			if req.RoomID != "" {
+				res.RoomAccountData = make(map[string][]gomatrixserverlib.ClientEvent)
+				res.RoomAccountData[req.RoomID] = []gomatrixserverlib.ClientEvent{*event}
+			} else {
+				res.GlobalAccountData = append(res.GlobalAccountData, *event)
+			}
+		}
+		return nil
+	}
+	global, rooms, err := a.AccountDB.GetAccountData(ctx, local)
+	if err != nil {
+		return err
+	}
+	res.RoomAccountData = rooms
+	res.GlobalAccountData = global
+	return nil
+}
+
 func (a *UserInternalAPI) QueryAccessToken(ctx context.Context, req *api.QueryAccessTokenRequest, res *api.QueryAccessTokenResponse) error {
 	if req.AppServiceUserID != "" {
 		appServiceDevice, err := a.queryAppServiceToken(ctx, req.AccessToken, req.AppServiceUserID)

userapi/inthttp/client.go

@@ -29,6 +29,7 @@ const (
 	QueryProfilePath     = "/userapi/queryProfile"
 	QueryAccessTokenPath = "/userapi/queryAccessToken"
 	QueryDevicesPath     = "/userapi/queryDevices"
+	QueryAccountDataPath = "/userapi/queryAccountData"
 )
 
 // NewUserAPIClient creates a UserInternalAPI implemented by talking to a HTTP POST API.
@@ -82,3 +83,11 @@ func (h *httpUserInternalAPI) QueryDevices(ctx context.Context, req *api.QueryDe
 	apiURL := h.apiURL + QueryDevicesPath
 	return httputil.PostJSON(ctx, span, h.httpClient, apiURL, req, res)
 }
+
+func (h *httpUserInternalAPI) QueryAccountData(ctx context.Context, req *api.QueryAccountDataRequest, res *api.QueryAccountDataResponse) error {
+	span, ctx := opentracing.StartSpanFromContext(ctx, "QueryAccountData")
+	defer span.Finish()
+
+	apiURL := h.apiURL + QueryAccountDataPath
+	return httputil.PostJSON(ctx, span, h.httpClient, apiURL, req, res)
+}

userapi/inthttp/server.go

@@ -64,4 +64,17 @@ func AddRoutes(internalAPIMux *mux.Router, s api.UserInternalAPI) {
 			return util.JSONResponse{Code: http.StatusOK, JSON: &response}
 		}),
 	)
+	internalAPIMux.Handle(QueryAccountDataPath,
+		httputil.MakeInternalAPI("queryAccountData", func(req *http.Request) util.JSONResponse {
+			request := api.QueryAccountDataRequest{}
+			response := api.QueryAccountDataResponse{}
+			if err := json.NewDecoder(req.Body).Decode(&request); err != nil {
+				return util.MessageResponse(http.StatusBadRequest, err.Error())
+			}
+			if err := s.QueryAccountData(req.Context(), &request, &response); err != nil {
+				return util.ErrorResponse(err)
+			}
+			return util.JSONResponse{Code: http.StatusOK, JSON: &response}
+		}),
+	)
 }