Virtual hosting schema and logic changes (#2876)

Note that virtual users cannot federate correctly yet.

appservice/appservice.go

@@ -32,6 +32,7 @@ import (
 	"github.com/matrix-org/dendrite/setup/base"
 	"github.com/matrix-org/dendrite/setup/config"
 	userapi "github.com/matrix-org/dendrite/userapi/api"
+	"github.com/matrix-org/gomatrixserverlib"
 )
 
 // AddInternalRoutes registers HTTP handlers for internal API calls
@@ -74,7 +75,7 @@ func NewInternalAPI(
 	// events to be sent out.
 	for _, appservice := range base.Cfg.Derived.ApplicationServices {
 		// Create bot account for this AS if it doesn't already exist
-		if err := generateAppServiceAccount(userAPI, appservice); err != nil {
+		if err := generateAppServiceAccount(userAPI, appservice, base.Cfg.Global.ServerName); err != nil {
 			logrus.WithFields(logrus.Fields{
 				"appservice": appservice.ID,
 			}).WithError(err).Panicf("failed to generate bot account for appservice")
@@ -101,11 +102,13 @@ func NewInternalAPI(
 func generateAppServiceAccount(
 	userAPI userapi.AppserviceUserAPI,
 	as config.ApplicationService,
+	serverName gomatrixserverlib.ServerName,
 ) error {
 	var accRes userapi.PerformAccountCreationResponse
 	err := userAPI.PerformAccountCreation(context.Background(), &userapi.PerformAccountCreationRequest{
 		AccountType:  userapi.AccountTypeAppService,
 		Localpart:    as.SenderLocalpart,
+		ServerName:   serverName,
 		AppServiceID: as.ID,
 		OnConflict:   userapi.ConflictUpdate,
 	}, &accRes)
@@ -115,6 +118,7 @@ func generateAppServiceAccount(
 	var devRes userapi.PerformDeviceCreationResponse
 	err = userAPI.PerformDeviceCreation(context.Background(), &userapi.PerformDeviceCreationRequest{
 		Localpart:          as.SenderLocalpart,
+		ServerName:         serverName,
 		AccessToken:        as.ASToken,
 		DeviceID:           &as.SenderLocalpart,
 		DeviceDisplayName:  &as.SenderLocalpart,