Remove polylith/API mode (#2967)

This removes most of the code used for polylith/API mode.

This removes the `/api` internal endpoints entirely. 

Binary size change roughly 5%: 
```
51437560 Feb 13 10:15 dendrite-monolith-server # old
48759008 Feb 13 10:15 dendrite-monolith-server # new
```

18 files changed, 187 insertions, 618 deletions

diff --git a/cmd/dendrite-demo-pinecone/monolith/monolith.go b/cmd/dendrite-demo-pinecone/monolith/monolith.go
index 6f1c69a7..fe19593c 100644
--- a/cmd/dendrite-demo-pinecone/monolith/monolith.go
+++ b/cmd/dendrite-demo-pinecone/monolith/monolith.go
@@ -80,8 +80,8 @@ type P2PMonolith struct {
 func GenerateDefaultConfig(sk ed25519.PrivateKey, storageDir string, cacheDir string, dbPrefix string) *config.Dendrite {
 	cfg := config.Dendrite{}
 	cfg.Defaults(config.DefaultOpts{
-		Generate:   true,
-		Monolithic: true,
+		Generate:       true,
+		SingleDatabase: true,
 	})
 	cfg.Global.PrivateKey = sk
 	cfg.Global.JetStream.StoragePath = config.Path(fmt.Sprintf("%s/", filepath.Join(cacheDir, dbPrefix)))
@@ -121,9 +121,9 @@ func (p *P2PMonolith) SetupPinecone(sk ed25519.PrivateKey) {
 
 func (p *P2PMonolith) SetupDendrite(cfg *config.Dendrite, port int, enableRelaying bool, enableMetrics bool, enableWebsockets bool) {
 	if enableMetrics {
-		p.BaseDendrite = base.NewBaseDendrite(cfg, "Monolith")
+		p.BaseDendrite = base.NewBaseDendrite(cfg)
 	} else {
-		p.BaseDendrite = base.NewBaseDendrite(cfg, "Monolith", base.DisableMetrics)
+		p.BaseDendrite = base.NewBaseDendrite(cfg, base.DisableMetrics)
 	}
 	p.port = port
 	p.BaseDendrite.ConfigureAdminEndpoints()
@@ -236,7 +236,6 @@ func (p *P2PMonolith) Addr() string {
 
 func (p *P2PMonolith) setupHttpServers(userProvider *users.PineconeUserProvider, enableWebsockets bool) {
 	p.httpMux = mux.NewRouter().SkipClean(true).UseEncodedPath()
-	p.httpMux.PathPrefix(httputil.InternalPathPrefix).Handler(p.BaseDendrite.InternalAPIMux)
 	p.httpMux.PathPrefix(httputil.PublicClientPathPrefix).Handler(p.BaseDendrite.PublicClientAPIMux)
 	p.httpMux.PathPrefix(httputil.PublicMediaPathPrefix).Handler(p.BaseDendrite.PublicMediaAPIMux)
 	p.httpMux.PathPrefix(httputil.DendriteAdminPathPrefix).Handler(p.BaseDendrite.DendriteAdminMux)
diff --git a/cmd/dendrite-demo-yggdrasil/main.go b/cmd/dendrite-demo-yggdrasil/main.go
index 3ea4a08b..842682b4 100644
--- a/cmd/dendrite-demo-yggdrasil/main.go
+++ b/cmd/dendrite-demo-yggdrasil/main.go
@@ -117,8 +117,8 @@ func main() {
 		cfg = setup.ParseFlags(true)
 	} else {
 		cfg.Defaults(config.DefaultOpts{
-			Generate:   true,
-			Monolithic: true,
+			Generate:       true,
+			SingleDatabase: true,
 		})
 		cfg.Global.PrivateKey = sk
 		cfg.Global.JetStream.StoragePath = config.Path(filepath.Join(*instanceDir, *instanceName))
@@ -143,7 +143,7 @@ func main() {
 	cfg.Global.ServerName = gomatrixserverlib.ServerName(hex.EncodeToString(pk))
 	cfg.Global.KeyID = gomatrixserverlib.KeyID(signing.KeyID)
 
-	base := base.NewBaseDendrite(cfg, "Monolith")
+	base := base.NewBaseDendrite(cfg)
 	base.ConfigureAdminEndpoints()
 	defer base.Close() // nolint: errcheck
 
@@ -157,13 +157,11 @@ func main() {
 	serverKeyAPI := &signing.YggdrasilKeys{}
 	keyRing := serverKeyAPI.KeyRing()
 
-	rsComponent := roomserver.NewInternalAPI(
+	rsAPI := roomserver.NewInternalAPI(
 		base,
 	)
 
-	keyAPI := keyserver.NewInternalAPI(base, &base.Cfg.KeyServer, federation, rsComponent)
-
-	rsAPI := rsComponent
+	keyAPI := keyserver.NewInternalAPI(base, &base.Cfg.KeyServer, federation, rsAPI)
 
 	userAPI := userapi.NewInternalAPI(base, &cfg.UserAPI, nil, keyAPI, rsAPI, base.PushGatewayHTTPClient())
 	keyAPI.SetUserAPI(userAPI)
@@ -174,7 +172,7 @@ func main() {
 		base, federation, rsAPI, base.Caches, keyRing, true,
 	)
 
-	rsComponent.SetFederationAPI(fsAPI, keyRing)
+	rsAPI.SetFederationAPI(fsAPI, keyRing)
 
 	monolith := setup.Monolith{
 		Config:    base.Cfg,
@@ -197,7 +195,6 @@ func main() {
 	}
 
 	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.PathPrefix(httputil.DendriteAdminPathPrefix).Handler(base.DendriteAdminMux)
diff --git a/cmd/dendrite-monolith-server/main.go b/cmd/dendrite-monolith-server/main.go
deleted file mode 100644
index 6836b642..00000000
--- a/cmd/dendrite-monolith-server/main.go
+++ /dev/null
@@ -1,178 +0,0 @@
-// Copyright 2017 Vector Creations Ltd
-//
-// 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 (
-	"flag"
-	"os"
-
-	"github.com/sirupsen/logrus"
-
-	"github.com/matrix-org/dendrite/appservice"
-	"github.com/matrix-org/dendrite/federationapi"
-	"github.com/matrix-org/dendrite/keyserver"
-	"github.com/matrix-org/dendrite/roomserver"
-	"github.com/matrix-org/dendrite/roomserver/api"
-	"github.com/matrix-org/dendrite/setup"
-	basepkg "github.com/matrix-org/dendrite/setup/base"
-	"github.com/matrix-org/dendrite/setup/config"
-	"github.com/matrix-org/dendrite/setup/mscs"
-	"github.com/matrix-org/dendrite/userapi"
-	uapi "github.com/matrix-org/dendrite/userapi/api"
-)
-
-var (
-	httpBindAddr   = flag.String("http-bind-address", ":8008", "The HTTP listening port for the server")
-	httpsBindAddr  = flag.String("https-bind-address", ":8448", "The HTTPS listening port for the server")
-	apiBindAddr    = flag.String("api-bind-address", "localhost:18008", "The HTTP listening port for the internal HTTP APIs (if -api is enabled)")
-	certFile       = flag.String("tls-cert", "", "The PEM formatted X509 certificate to use for TLS")
-	keyFile        = flag.String("tls-key", "", "The PEM private key to use for TLS")
-	enableHTTPAPIs = flag.Bool("api", false, "Use HTTP APIs instead of short-circuiting (warning: exposes API endpoints!)")
-	traceInternal  = os.Getenv("DENDRITE_TRACE_INTERNAL") == "1"
-)
-
-func main() {
-	cfg := setup.ParseFlags(true)
-	httpAddr := config.HTTPAddress("http://" + *httpBindAddr)
-	httpsAddr := config.HTTPAddress("https://" + *httpsBindAddr)
-	httpAPIAddr := httpAddr
-	options := []basepkg.BaseDendriteOptions{}
-	if *enableHTTPAPIs {
-		logrus.Warnf("DANGER! The -api option is enabled, exposing internal APIs on %q!", *apiBindAddr)
-		httpAPIAddr = config.HTTPAddress("http://" + *apiBindAddr)
-		// If the HTTP APIs are enabled then we need to update the Listen
-		// statements in the configuration so that we know where to find
-		// the API endpoints. They'll listen on the same port as the monolith
-		// itself.
-		cfg.AppServiceAPI.InternalAPI.Connect = httpAPIAddr
-		cfg.ClientAPI.InternalAPI.Connect = httpAPIAddr
-		cfg.FederationAPI.InternalAPI.Connect = httpAPIAddr
-		cfg.KeyServer.InternalAPI.Connect = httpAPIAddr
-		cfg.MediaAPI.InternalAPI.Connect = httpAPIAddr
-		cfg.RoomServer.InternalAPI.Connect = httpAPIAddr
-		cfg.SyncAPI.InternalAPI.Connect = httpAPIAddr
-		cfg.UserAPI.InternalAPI.Connect = httpAPIAddr
-		options = append(options, basepkg.UseHTTPAPIs)
-	}
-
-	base := basepkg.NewBaseDendrite(cfg, "Monolith", options...)
-	defer base.Close() // nolint: errcheck
-
-	federation := base.CreateFederationClient()
-
-	rsImpl := roomserver.NewInternalAPI(base)
-	// call functions directly on the impl unless running in HTTP mode
-	rsAPI := rsImpl
-	if base.UseHTTPAPIs {
-		roomserver.AddInternalRoutes(base.InternalAPIMux, rsImpl, base.EnableMetrics)
-		rsAPI = base.RoomserverHTTPClient()
-	}
-	if traceInternal {
-		rsAPI = &api.RoomserverInternalAPITrace{
-			Impl: rsAPI,
-		}
-	}
-
-	fsAPI := federationapi.NewInternalAPI(
-		base, federation, rsAPI, base.Caches, nil, false,
-	)
-	fsImplAPI := fsAPI
-	if base.UseHTTPAPIs {
-		federationapi.AddInternalRoutes(base.InternalAPIMux, fsAPI, base.EnableMetrics)
-		fsAPI = base.FederationAPIHTTPClient()
-	}
-	keyRing := fsAPI.KeyRing()
-
-	keyImpl := keyserver.NewInternalAPI(base, &base.Cfg.KeyServer, fsAPI, rsAPI)
-	keyAPI := keyImpl
-	if base.UseHTTPAPIs {
-		keyserver.AddInternalRoutes(base.InternalAPIMux, keyAPI, base.EnableMetrics)
-		keyAPI = base.KeyServerHTTPClient()
-	}
-
-	pgClient := base.PushGatewayHTTPClient()
-	userImpl := userapi.NewInternalAPI(base, &cfg.UserAPI, cfg.Derived.ApplicationServices, keyAPI, rsAPI, pgClient)
-	userAPI := userImpl
-	if base.UseHTTPAPIs {
-		userapi.AddInternalRoutes(base.InternalAPIMux, userAPI, base.EnableMetrics)
-		userAPI = base.UserAPIClient()
-	}
-	if traceInternal {
-		userAPI = &uapi.UserInternalAPITrace{
-			Impl: userAPI,
-		}
-	}
-
-	// TODO: This should use userAPI, not userImpl, but the appservice setup races with
-	// the listeners and panics at startup if it tries to create appservice accounts
-	// before the listeners are up.
-	asAPI := appservice.NewInternalAPI(base, userImpl, rsAPI)
-	if base.UseHTTPAPIs {
-		appservice.AddInternalRoutes(base.InternalAPIMux, asAPI, base.EnableMetrics)
-		asAPI = base.AppserviceHTTPClient()
-	}
-
-	// 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. Other components also need updating after their dependencies are up.
-	rsImpl.SetFederationAPI(fsAPI, keyRing)
-	rsImpl.SetAppserviceAPI(asAPI)
-	rsImpl.SetUserAPI(userAPI)
-	keyImpl.SetUserAPI(userAPI)
-
-	monolith := setup.Monolith{
-		Config:    base.Cfg,
-		Client:    base.CreateClient(),
-		FedClient: federation,
-		KeyRing:   keyRing,
-
-		AppserviceAPI: asAPI,
-		// always use the concrete impl here even in -http mode because adding public routes
-		// must be done on the concrete impl not an HTTP client else fedapi will call itself
-		FederationAPI: fsImplAPI,
-		RoomserverAPI: rsAPI,
-		UserAPI:       userAPI,
-		KeyAPI:        keyAPI,
-	}
-	monolith.AddAllPublicRoutes(base)
-
-	if len(base.Cfg.MSCs.MSCs) > 0 {
-		if err := mscs.Enable(base, &monolith); err != nil {
-			logrus.WithError(err).Fatalf("Failed to enable MSCs")
-		}
-	}
-
-	// Expose the matrix APIs directly rather than putting them under a /api path.
-	go func() {
-		base.SetupAndServeHTTP(
-			httpAPIAddr, // internal API
-			httpAddr,    // external API
-			nil, nil,    // TLS settings
-		)
-	}()
-	// Handle HTTPS if certificate and key are provided
-	if *certFile != "" && *keyFile != "" {
-		go func() {
-			base.SetupAndServeHTTP(
-				basepkg.NoListener, // internal API
-				httpsAddr,          // external API
-				certFile, keyFile,  // TLS settings
-			)
-		}()
-	}
-
-	// We want to block forever to let the HTTP and HTTPS handler serve the APIs
-	base.WaitForShutdown()
-}
diff --git a/cmd/dendrite-polylith-multi/main.go b/cmd/dendrite-polylith-multi/main.go
deleted file mode 100644
index c6a560b1..00000000
--- a/cmd/dendrite-polylith-multi/main.go
+++ /dev/null
@@ -1,77 +0,0 @@
-// 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 (
-	"flag"
-	"os"
-	"strings"
-
-	"github.com/matrix-org/dendrite/cmd/dendrite-polylith-multi/personalities"
-	"github.com/matrix-org/dendrite/setup"
-	"github.com/matrix-org/dendrite/setup/base"
-	"github.com/matrix-org/dendrite/setup/config"
-	"github.com/sirupsen/logrus"
-)
-
-type entrypoint func(base *base.BaseDendrite, cfg *config.Dendrite)
-
-func main() {
-	cfg := setup.ParseFlags(false)
-
-	component := ""
-	if flag.NFlag() > 0 {
-		component = flag.Arg(0) // ./dendrite-polylith-multi --config=... clientapi
-	} else if len(os.Args) > 1 {
-		component = os.Args[1] // ./dendrite-polylith-multi clientapi
-	}
-
-	components := map[string]entrypoint{
-		"appservice":    personalities.Appservice,
-		"clientapi":     personalities.ClientAPI,
-		"federationapi": personalities.FederationAPI,
-		"keyserver":     personalities.KeyServer,
-		"mediaapi":      personalities.MediaAPI,
-		"roomserver":    personalities.RoomServer,
-		"syncapi":       personalities.SyncAPI,
-		"userapi":       personalities.UserAPI,
-	}
-
-	start, ok := components[component]
-	if !ok {
-		if component == "" {
-			logrus.Errorf("No component specified")
-			logrus.Info("The first argument on the command line must be the name of the component to run")
-		} else {
-			logrus.Errorf("Unknown component %q specified", component)
-		}
-
-		var list []string
-		for c := range components {
-			list = append(list, c)
-		}
-		logrus.Infof("Valid components: %s", strings.Join(list, ", "))
-
-		os.Exit(1)
-	}
-
-	logrus.Infof("Starting %q component", component)
-
-	base := base.NewBaseDendrite(cfg, component, base.PolylithMode) // TODO
-	defer base.Close()                                              // nolint: errcheck
-
-	go start(base, cfg)
-	base.WaitForShutdown()
-}
diff --git a/cmd/dendrite-polylith-multi/personalities/appservice.go b/cmd/dendrite-polylith-multi/personalities/appservice.go
deleted file mode 100644
index 0547d57f..00000000
--- a/cmd/dendrite-polylith-multi/personalities/appservice.go
+++ /dev/null
@@ -1,36 +0,0 @@
-// 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 personalities
-
-import (
-	"github.com/matrix-org/dendrite/appservice"
-	"github.com/matrix-org/dendrite/setup/base"
-	basepkg "github.com/matrix-org/dendrite/setup/base"
-	"github.com/matrix-org/dendrite/setup/config"
-)
-
-func Appservice(base *base.BaseDendrite, cfg *config.Dendrite) {
-	userAPI := base.UserAPIClient()
-	rsAPI := base.RoomserverHTTPClient()
-
-	intAPI := appservice.NewInternalAPI(base, userAPI, rsAPI)
-	appservice.AddInternalRoutes(base.InternalAPIMux, intAPI, base.EnableMetrics)
-
-	base.SetupAndServeHTTP(
-		base.Cfg.AppServiceAPI.InternalAPI.Listen, // internal listener
-		basepkg.NoListener,                        // external listener
-		nil, nil,
-	)
-}
diff --git a/cmd/dendrite-polylith-multi/personalities/clientapi.go b/cmd/dendrite-polylith-multi/personalities/clientapi.go
deleted file mode 100644
index a5d69d07..00000000
--- a/cmd/dendrite-polylith-multi/personalities/clientapi.go
+++ /dev/null
@@ -1,44 +0,0 @@
-// 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 personalities
-
-import (
-	"github.com/matrix-org/dendrite/clientapi"
-	"github.com/matrix-org/dendrite/internal/transactions"
-	basepkg "github.com/matrix-org/dendrite/setup/base"
-	"github.com/matrix-org/dendrite/setup/config"
-)
-
-func ClientAPI(base *basepkg.BaseDendrite, cfg *config.Dendrite) {
-	federation := base.CreateFederationClient()
-
-	asQuery := base.AppserviceHTTPClient()
-	rsAPI := base.RoomserverHTTPClient()
-	fsAPI := base.FederationAPIHTTPClient()
-	userAPI := base.UserAPIClient()
-	keyAPI := base.KeyServerHTTPClient()
-
-	clientapi.AddPublicRoutes(
-		base, federation, rsAPI, asQuery,
-		transactions.New(), fsAPI, userAPI, userAPI,
-		keyAPI, nil,
-	)
-
-	base.SetupAndServeHTTP(
-		base.Cfg.ClientAPI.InternalAPI.Listen,
-		base.Cfg.ClientAPI.ExternalAPI.Listen,
-		nil, nil,
-	)
-}
diff --git a/cmd/dendrite-polylith-multi/personalities/federationapi.go b/cmd/dendrite-polylith-multi/personalities/federationapi.go
deleted file mode 100644
index 48da42fb..00000000
--- a/cmd/dendrite-polylith-multi/personalities/federationapi.go
+++ /dev/null
@@ -1,44 +0,0 @@
-// 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 personalities
-
-import (
-	"github.com/matrix-org/dendrite/federationapi"
-	basepkg "github.com/matrix-org/dendrite/setup/base"
-	"github.com/matrix-org/dendrite/setup/config"
-)
-
-func FederationAPI(base *basepkg.BaseDendrite, cfg *config.Dendrite) {
-	userAPI := base.UserAPIClient()
-	federation := base.CreateFederationClient()
-	rsAPI := base.RoomserverHTTPClient()
-	keyAPI := base.KeyServerHTTPClient()
-	fsAPI := federationapi.NewInternalAPI(base, federation, rsAPI, base.Caches, nil, true)
-	keyRing := fsAPI.KeyRing()
-
-	federationapi.AddPublicRoutes(
-		base,
-		userAPI, federation, keyRing,
-		rsAPI, fsAPI, keyAPI, nil,
-	)
-
-	federationapi.AddInternalRoutes(base.InternalAPIMux, fsAPI, base.EnableMetrics)
-
-	base.SetupAndServeHTTP(
-		base.Cfg.FederationAPI.InternalAPI.Listen,
-		base.Cfg.FederationAPI.ExternalAPI.Listen,
-		nil, nil,
-	)
-}
diff --git a/cmd/dendrite-polylith-multi/personalities/keyserver.go b/cmd/dendrite-polylith-multi/personalities/keyserver.go
deleted file mode 100644
index ad0bd0e5..00000000
--- a/cmd/dendrite-polylith-multi/personalities/keyserver.go
+++ /dev/null
@@ -1,36 +0,0 @@
-// 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 personalities
-
-import (
-	"github.com/matrix-org/dendrite/keyserver"
-	basepkg "github.com/matrix-org/dendrite/setup/base"
-	"github.com/matrix-org/dendrite/setup/config"
-)
-
-func KeyServer(base *basepkg.BaseDendrite, cfg *config.Dendrite) {
-	fsAPI := base.FederationAPIHTTPClient()
-	rsAPI := base.RoomserverHTTPClient()
-	intAPI := keyserver.NewInternalAPI(base, &base.Cfg.KeyServer, fsAPI, rsAPI)
-	intAPI.SetUserAPI(base.UserAPIClient())
-
-	keyserver.AddInternalRoutes(base.InternalAPIMux, intAPI, base.EnableMetrics)
-
-	base.SetupAndServeHTTP(
-		base.Cfg.KeyServer.InternalAPI.Listen, // internal listener
-		basepkg.NoListener,                    // external listener
-		nil, nil,
-	)
-}
diff --git a/cmd/dendrite-polylith-multi/personalities/mediaapi.go b/cmd/dendrite-polylith-multi/personalities/mediaapi.go
deleted file mode 100644
index 69d5fd5a..00000000
--- a/cmd/dendrite-polylith-multi/personalities/mediaapi.go
+++ /dev/null
@@ -1,36 +0,0 @@
-// 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 personalities
-
-import (
-	"github.com/matrix-org/dendrite/mediaapi"
-	basepkg "github.com/matrix-org/dendrite/setup/base"
-	"github.com/matrix-org/dendrite/setup/config"
-)
-
-func MediaAPI(base *basepkg.BaseDendrite, cfg *config.Dendrite) {
-	userAPI := base.UserAPIClient()
-	client := base.CreateClient()
-
-	mediaapi.AddPublicRoutes(
-		base, userAPI, client,
-	)
-
-	base.SetupAndServeHTTP(
-		base.Cfg.MediaAPI.InternalAPI.Listen,
-		base.Cfg.MediaAPI.ExternalAPI.Listen,
-		nil, nil,
-	)
-}
diff --git a/cmd/dendrite-polylith-multi/personalities/roomserver.go b/cmd/dendrite-polylith-multi/personalities/roomserver.go
deleted file mode 100644
index 974559bd..00000000
--- a/cmd/dendrite-polylith-multi/personalities/roomserver.go
+++ /dev/null
@@ -1,36 +0,0 @@
-// 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 personalities
-
-import (
-	"github.com/matrix-org/dendrite/roomserver"
-	basepkg "github.com/matrix-org/dendrite/setup/base"
-	"github.com/matrix-org/dendrite/setup/config"
-)
-
-func RoomServer(base *basepkg.BaseDendrite, cfg *config.Dendrite) {
-	asAPI := base.AppserviceHTTPClient()
-	fsAPI := base.FederationAPIHTTPClient()
-	rsAPI := roomserver.NewInternalAPI(base)
-	rsAPI.SetFederationAPI(fsAPI, fsAPI.KeyRing())
-	rsAPI.SetAppserviceAPI(asAPI)
-	roomserver.AddInternalRoutes(base.InternalAPIMux, rsAPI, base.EnableMetrics)
-
-	base.SetupAndServeHTTP(
-		base.Cfg.RoomServer.InternalAPI.Listen, // internal listener
-		basepkg.NoListener,                     // external listener
-		nil, nil,
-	)
-}
diff --git a/cmd/dendrite-polylith-multi/personalities/syncapi.go b/cmd/dendrite-polylith-multi/personalities/syncapi.go
deleted file mode 100644
index 41637fe1..00000000
--- a/cmd/dendrite-polylith-multi/personalities/syncapi.go
+++ /dev/null
@@ -1,39 +0,0 @@
-// 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 personalities
-
-import (
-	basepkg "github.com/matrix-org/dendrite/setup/base"
-	"github.com/matrix-org/dendrite/setup/config"
-	"github.com/matrix-org/dendrite/syncapi"
-)
-
-func SyncAPI(base *basepkg.BaseDendrite, cfg *config.Dendrite) {
-	userAPI := base.UserAPIClient()
-
-	rsAPI := base.RoomserverHTTPClient()
-
-	syncapi.AddPublicRoutes(
-		base,
-		userAPI, rsAPI,
-		base.KeyServerHTTPClient(),
-	)
-
-	base.SetupAndServeHTTP(
-		base.Cfg.SyncAPI.InternalAPI.Listen,
-		base.Cfg.SyncAPI.ExternalAPI.Listen,
-		nil, nil,
-	)
-}
diff --git a/cmd/dendrite-polylith-multi/personalities/userapi.go b/cmd/dendrite-polylith-multi/personalities/userapi.go
deleted file mode 100644
index 1bc88cb5..00000000
--- a/cmd/dendrite-polylith-multi/personalities/userapi.go
+++ /dev/null
@@ -1,37 +0,0 @@
-// 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 personalities
-
-import (
-	basepkg "github.com/matrix-org/dendrite/setup/base"
-	"github.com/matrix-org/dendrite/setup/config"
-	"github.com/matrix-org/dendrite/userapi"
-)
-
-func UserAPI(base *basepkg.BaseDendrite, cfg *config.Dendrite) {
-	userAPI := userapi.NewInternalAPI(
-		base, &cfg.UserAPI, cfg.Derived.ApplicationServices,
-		base.KeyServerHTTPClient(), base.RoomserverHTTPClient(),
-		base.PushGatewayHTTPClient(),
-	)
-
-	userapi.AddInternalRoutes(base.InternalAPIMux, userAPI, base.EnableMetrics)
-
-	base.SetupAndServeHTTP(
-		base.Cfg.UserAPI.InternalAPI.Listen, // internal listener
-		basepkg.NoListener,                  // external listener
-		nil, nil,
-	)
-}
diff --git a/cmd/dendrite-upgrade-tests/main.go b/cmd/dendrite-upgrade-tests/main.go
index 39b9320c..174a80a3 100644
--- a/cmd/dendrite-upgrade-tests/main.go
+++ b/cmd/dendrite-upgrade-tests/main.go
@@ -45,6 +45,10 @@ var (
 
 const HEAD = "HEAD"
 
+// The binary was renamed after v0.11.1, so everything after that should use the new name
+var binaryChangeVersion, _ = semver.NewVersion("v0.11.1")
+var latest, _ = semver.NewVersion("v6.6.6") // Dummy version, used as "HEAD"
+
 // Embed the Dockerfile to use when building dendrite versions.
 // We cannot use the dockerfile associated with the repo with each version sadly due to changes in
 // Docker versions. Specifically, earlier Dendrite versions are incompatible with newer Docker clients
@@ -54,12 +58,13 @@ const HEAD = "HEAD"
 const DockerfilePostgreSQL = `FROM golang:1.18-stretch as build
 RUN apt-get update && apt-get install -y postgresql
 WORKDIR /build
+ARG BINARY
 
 # Copy the build context to the repo as this is the right dendrite code. This is different to the
 # Complement Dockerfile which wgets a branch.
 COPY . .
 
-RUN go build ./cmd/dendrite-monolith-server
+RUN go build ./cmd/${BINARY}
 RUN go build ./cmd/generate-keys
 RUN go build ./cmd/generate-config
 RUN go build ./cmd/create-account
@@ -88,22 +93,24 @@ done \n\
  \n\
 sed -i "s/server_name: localhost/server_name: ${SERVER_NAME}/g" dendrite.yaml \n\
 PARAMS="--tls-cert server.crt --tls-key server.key --config dendrite.yaml" \n\
-./dendrite-monolith-server --really-enable-open-registration ${PARAMS} || ./dendrite-monolith-server ${PARAMS} \n\
+./${BINARY} --really-enable-open-registration ${PARAMS} || ./${BINARY} ${PARAMS} \n\
 ' > run_dendrite.sh && chmod +x run_dendrite.sh
 
 ENV SERVER_NAME=localhost
+ENV BINARY=dendrite
 EXPOSE 8008 8448
-CMD /build/run_dendrite.sh `
+CMD /build/run_dendrite.sh`
 
 const DockerfileSQLite = `FROM golang:1.18-stretch as build
 RUN apt-get update && apt-get install -y postgresql
 WORKDIR /build
+ARG BINARY
 
 # Copy the build context to the repo as this is the right dendrite code. This is different to the
 # Complement Dockerfile which wgets a branch.
 COPY . .
 
-RUN go build ./cmd/dendrite-monolith-server
+RUN go build ./cmd/${BINARY}
 RUN go build ./cmd/generate-keys
 RUN go build ./cmd/generate-config
 RUN go build ./cmd/create-account
@@ -118,10 +125,11 @@ RUN sed -i "s%connection_string:.file:%connection_string: file:\/var\/lib\/postg
 RUN echo '\
 sed -i "s/server_name: localhost/server_name: ${SERVER_NAME}/g" dendrite.yaml \n\
 PARAMS="--tls-cert server.crt --tls-key server.key --config dendrite.yaml" \n\
-./dendrite-monolith-server --really-enable-open-registration ${PARAMS} || ./dendrite-monolith-server ${PARAMS} \n\
+./${BINARY} --really-enable-open-registration ${PARAMS} || ./${BINARY} ${PARAMS} \n\
 ' > run_dendrite.sh && chmod +x run_dendrite.sh
 
 ENV SERVER_NAME=localhost
+ENV BINARY=dendrite
 EXPOSE 8008 8448
 CMD /build/run_dendrite.sh `
 
@@ -182,7 +190,7 @@ func downloadArchive(cli *http.Client, tmpDir, archiveURL string, dockerfile []b
 }
 
 // buildDendrite builds Dendrite on the branchOrTagName given. Returns the image ID or an error
-func buildDendrite(httpClient *http.Client, dockerClient *client.Client, tmpDir, branchOrTagName string) (string, error) {
+func buildDendrite(httpClient *http.Client, dockerClient *client.Client, tmpDir string, branchOrTagName, binary string) (string, error) {
 	var tarball *bytes.Buffer
 	var err error
 	// If a custom HEAD location is given, use that, else pull from github. Mostly useful for CI
@@ -216,6 +224,9 @@ func buildDendrite(httpClient *http.Client, dockerClient *client.Client, tmpDir,
 	log.Printf("%s: Building version %s\n", branchOrTagName, branchOrTagName)
 	res, err := dockerClient.ImageBuild(context.Background(), tarball, types.ImageBuildOptions{
 		Tags: []string{"dendrite-upgrade"},
+		BuildArgs: map[string]*string{
+			"BINARY": &binary,
+		},
 	})
 	if err != nil {
 		return "", fmt.Errorf("failed to start building image: %s", err)
@@ -272,7 +283,7 @@ func getAndSortVersionsFromGithub(httpClient *http.Client) (semVers []*semver.Ve
 	return semVers, nil
 }
 
-func calculateVersions(cli *http.Client, from, to string, direct bool) []string {
+func calculateVersions(cli *http.Client, from, to string, direct bool) []*semver.Version {
 	semvers, err := getAndSortVersionsFromGithub(cli)
 	if err != nil {
 		log.Fatalf("failed to collect semvers from github: %s", err)
@@ -320,28 +331,25 @@ func calculateVersions(cli *http.Client, from, to string, direct bool) []string
 		}
 		semvers = semvers[:i+1]
 	}
-	var versions []string
-	for _, sv := range semvers {
-		versions = append(versions, sv.Original())
-	}
+
 	if to == HEAD {
-		versions = append(versions, HEAD)
+		semvers = append(semvers, latest)
 	}
 	if direct {
-		versions = []string{versions[0], versions[len(versions)-1]}
+		semvers = []*semver.Version{semvers[0], semvers[len(semvers)-1]}
 	}
-	return versions
+	return semvers
 }
 
-func buildDendriteImages(httpClient *http.Client, dockerClient *client.Client, baseTempDir string, concurrency int, branchOrTagNames []string) map[string]string {
+func buildDendriteImages(httpClient *http.Client, dockerClient *client.Client, baseTempDir string, concurrency int, versions []*semver.Version) map[string]string {
 	// concurrently build all versions, this can be done in any order. The mutex protects the map
 	branchToImageID := make(map[string]string)
 	var mu sync.Mutex
 
 	var wg sync.WaitGroup
 	wg.Add(concurrency)
-	ch := make(chan string, len(branchOrTagNames))
-	for _, branchName := range branchOrTagNames {
+	ch := make(chan *semver.Version, len(versions))
+	for _, branchName := range versions {
 		ch <- branchName
 	}
 	close(ch)
@@ -349,11 +357,13 @@ func buildDendriteImages(httpClient *http.Client, dockerClient *client.Client, b
 	for i := 0; i < concurrency; i++ {
 		go func() {
 			defer wg.Done()
-			for branchName := range ch {
+			for version := range ch {
+				branchName, binary := versionToBranchAndBinary(version)
+				log.Printf("Building version %s with binary %s", branchName, binary)
 				tmpDir := baseTempDir + alphaNumerics.ReplaceAllString(branchName, "")
-				imgID, err := buildDendrite(httpClient, dockerClient, tmpDir, branchName)
+				imgID, err := buildDendrite(httpClient, dockerClient, tmpDir, branchName, binary)
 				if err != nil {
-					log.Fatalf("%s: failed to build dendrite image: %s", branchName, err)
+					log.Fatalf("%s: failed to build dendrite image: %s", version, err)
 				}
 				mu.Lock()
 				branchToImageID[branchName] = imgID
@@ -365,13 +375,14 @@ func buildDendriteImages(httpClient *http.Client, dockerClient *client.Client, b
 	return branchToImageID
 }
 
-func runImage(dockerClient *client.Client, volumeName, version, imageID string) (csAPIURL, containerID string, err error) {
-	log.Printf("%s: running image %s\n", version, imageID)
+func runImage(dockerClient *client.Client, volumeName string, branchNameToImageID map[string]string, version *semver.Version) (csAPIURL, containerID string, err error) {
+	branchName, binary := versionToBranchAndBinary(version)
+	imageID := branchNameToImageID[branchName]
 	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Minute)
 	defer cancel()
 	body, err := dockerClient.ContainerCreate(ctx, &container.Config{
 		Image: imageID,
-		Env:   []string{"SERVER_NAME=hs1"},
+		Env:   []string{"SERVER_NAME=hs1", fmt.Sprintf("BINARY=%s", binary)},
 		Labels: map[string]string{
 			dendriteUpgradeTestLabel: "yes",
 		},
@@ -384,7 +395,7 @@ func runImage(dockerClient *client.Client, volumeName, version, imageID string)
 				Target: "/var/lib/postgresql/9.6/main",
 			},
 		},
-	}, nil, nil, "dendrite_upgrade_test_"+version)
+	}, nil, nil, "dendrite_upgrade_test_"+branchName)
 	if err != nil {
 		return "", "", fmt.Errorf("failed to ContainerCreate: %s", err)
 	}
@@ -451,8 +462,8 @@ func destroyContainer(dockerClient *client.Client, containerID string) {
 	}
 }
 
-func loadAndRunTests(dockerClient *client.Client, volumeName, v string, branchToImageID map[string]string) error {
-	csAPIURL, containerID, err := runImage(dockerClient, volumeName, v, branchToImageID[v])
+func loadAndRunTests(dockerClient *client.Client, volumeName string, v *semver.Version, branchToImageID map[string]string) error {
+	csAPIURL, containerID, err := runImage(dockerClient, volumeName, branchToImageID, v)
 	if err != nil {
 		return fmt.Errorf("failed to run container for branch %v: %v", v, err)
 	}
@@ -470,9 +481,10 @@ func loadAndRunTests(dockerClient *client.Client, volumeName, v string, branchTo
 }
 
 // test that create-account is working
-func testCreateAccount(dockerClient *client.Client, v string, containerID string) error {
-	createUser := strings.ToLower("createaccountuser-" + v)
-	log.Printf("%s: Creating account %s with create-account\n", v, createUser)
+func testCreateAccount(dockerClient *client.Client, version *semver.Version, containerID string) error {
+	branchName, _ := versionToBranchAndBinary(version)
+	createUser := strings.ToLower("createaccountuser-" + branchName)
+	log.Printf("%s: Creating account %s with create-account\n", branchName, createUser)
 
 	respID, err := dockerClient.ContainerExecCreate(context.Background(), containerID, types.ExecConfig{
 		AttachStderr: true,
@@ -504,9 +516,21 @@ func testCreateAccount(dockerClient *client.Client, v string, containerID string
 	return nil
 }
 
-func verifyTests(dockerClient *client.Client, volumeName string, versions []string, branchToImageID map[string]string) error {
+func versionToBranchAndBinary(version *semver.Version) (branchName, binary string) {
+	binary = "dendrite-monolith-server"
+	branchName = version.Original()
+	if version.GreaterThan(binaryChangeVersion) {
+		binary = "dendrite"
+		if version.Equal(latest) {
+			branchName = HEAD
+		}
+	}
+	return
+}
+
+func verifyTests(dockerClient *client.Client, volumeName string, versions []*semver.Version, branchToImageID map[string]string) error {
 	lastVer := versions[len(versions)-1]
-	csAPIURL, containerID, err := runImage(dockerClient, volumeName, lastVer, branchToImageID[lastVer])
+	csAPIURL, containerID, err := runImage(dockerClient, volumeName, branchToImageID, lastVer)
 	if err != nil {
 		return fmt.Errorf("failed to run container for branch %v: %v", lastVer, err)
 	}
diff --git a/cmd/dendrite-upgrade-tests/tests.go b/cmd/dendrite-upgrade-tests/tests.go
index 5c9589df..03438bd4 100644
--- a/cmd/dendrite-upgrade-tests/tests.go
+++ b/cmd/dendrite-upgrade-tests/tests.go
@@ -6,6 +6,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/Masterminds/semver/v3"
 	"github.com/matrix-org/gomatrix"
 	"github.com/matrix-org/gomatrixserverlib"
 )
@@ -22,7 +23,8 @@ type user struct {
 // - register alice and bob with branch name muxed into the localpart
 // - create a DM room for the 2 users and exchange messages
 // - create/join a public #global room and exchange messages
-func runTests(baseURL, branchName string) error {
+func runTests(baseURL string, v *semver.Version) error {
+	branchName, _ := versionToBranchAndBinary(v)
 	// register 2 users
 	users := []user{
 		{
@@ -164,15 +166,16 @@ func runTests(baseURL, branchName string) error {
 }
 
 // verifyTestsRan checks that the HS has the right rooms/messages
-func verifyTestsRan(baseURL string, branchNames []string) error {
+func verifyTestsRan(baseURL string, versions []*semver.Version) error {
 	log.Println("Verifying tests....")
 	// check we can login as all users
 	var resp *gomatrix.RespLogin
-	for _, branchName := range branchNames {
+	for _, version := range versions {
 		client, err := gomatrix.NewClient(baseURL, "", "")
 		if err != nil {
 			return err
 		}
+		branchName, _ := versionToBranchAndBinary(version)
 		userLocalparts := []string{
 			"alice" + branchName,
 			"bob" + branchName,
@@ -224,7 +227,7 @@ func verifyTestsRan(baseURL string, branchNames []string) error {
 			msgCount += 1
 		}
 	}
-	wantMsgCount := len(branchNames) * 4
+	wantMsgCount := len(versions) * 4
 	if msgCount != wantMsgCount {
 		return fmt.Errorf("got %d messages in global room, want %d", msgCount, wantMsgCount)
 	}
diff --git a/cmd/dendrite/main.go b/cmd/dendrite/main.go
new file mode 100644
index 00000000..35bfc1d6
--- /dev/null
+++ b/cmd/dendrite/main.go
@@ -0,0 +1,109 @@
+// Copyright 2017 Vector Creations Ltd
+//
+// 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 (
+	"flag"
+
+	"github.com/sirupsen/logrus"
+
+	"github.com/matrix-org/dendrite/appservice"
+	"github.com/matrix-org/dendrite/federationapi"
+	"github.com/matrix-org/dendrite/keyserver"
+	"github.com/matrix-org/dendrite/roomserver"
+	"github.com/matrix-org/dendrite/setup"
+	basepkg "github.com/matrix-org/dendrite/setup/base"
+	"github.com/matrix-org/dendrite/setup/config"
+	"github.com/matrix-org/dendrite/setup/mscs"
+	"github.com/matrix-org/dendrite/userapi"
+)
+
+var (
+	httpBindAddr  = flag.String("http-bind-address", ":8008", "The HTTP listening port for the server")
+	httpsBindAddr = flag.String("https-bind-address", ":8448", "The HTTPS listening port for the server")
+	certFile      = flag.String("tls-cert", "", "The PEM formatted X509 certificate to use for TLS")
+	keyFile       = flag.String("tls-key", "", "The PEM private key to use for TLS")
+)
+
+func main() {
+	cfg := setup.ParseFlags(true)
+	httpAddr := config.HTTPAddress("http://" + *httpBindAddr)
+	httpsAddr := config.HTTPAddress("https://" + *httpsBindAddr)
+	options := []basepkg.BaseDendriteOptions{}
+
+	base := basepkg.NewBaseDendrite(cfg, options...)
+	defer base.Close() // nolint: errcheck
+
+	federation := base.CreateFederationClient()
+
+	rsAPI := roomserver.NewInternalAPI(base)
+
+	fsAPI := federationapi.NewInternalAPI(
+		base, federation, rsAPI, base.Caches, nil, false,
+	)
+
+	keyRing := fsAPI.KeyRing()
+
+	keyAPI := keyserver.NewInternalAPI(base, &base.Cfg.KeyServer, fsAPI, rsAPI)
+
+	pgClient := base.PushGatewayHTTPClient()
+	userAPI := userapi.NewInternalAPI(base, &cfg.UserAPI, cfg.Derived.ApplicationServices, keyAPI, rsAPI, pgClient)
+
+	asAPI := appservice.NewInternalAPI(base, 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. Other components also need updating after their dependencies are up.
+	rsAPI.SetFederationAPI(fsAPI, keyRing)
+	rsAPI.SetAppserviceAPI(asAPI)
+	rsAPI.SetUserAPI(userAPI)
+	keyAPI.SetUserAPI(userAPI)
+
+	monolith := setup.Monolith{
+		Config:    base.Cfg,
+		Client:    base.CreateClient(),
+		FedClient: federation,
+		KeyRing:   keyRing,
+
+		AppserviceAPI: asAPI,
+		// always use the concrete impl here even in -http mode because adding public routes
+		// must be done on the concrete impl not an HTTP client else fedapi will call itself
+		FederationAPI: fsAPI,
+		RoomserverAPI: rsAPI,
+		UserAPI:       userAPI,
+		KeyAPI:        keyAPI,
+	}
+	monolith.AddAllPublicRoutes(base)
+
+	if len(base.Cfg.MSCs.MSCs) > 0 {
+		if err := mscs.Enable(base, &monolith); err != nil {
+			logrus.WithError(err).Fatalf("Failed to enable MSCs")
+		}
+	}
+
+	// Expose the matrix APIs directly rather than putting them under a /api path.
+	go func() {
+		base.SetupAndServeHTTP(httpAddr, nil, nil)
+	}()
+	// Handle HTTPS if certificate and key are provided
+	if *certFile != "" && *keyFile != "" {
+		go func() {
+			base.SetupAndServeHTTP(httpsAddr, certFile, keyFile)
+		}()
+	}
+
+	// We want to block forever to let the HTTP and HTTPS handler serve the APIs
+	base.WaitForShutdown()
+}
diff --git a/cmd/dendrite-monolith-server/main_test.go b/cmd/dendrite/main_test.go
index efa1a926..efa1a926 100644
--- a/cmd/dendrite-monolith-server/main_test.go
+++ b/cmd/dendrite/main_test.go
diff --git a/cmd/generate-config/main.go b/cmd/generate-config/main.go
index 56a14565..b0707be1 100644
--- a/cmd/generate-config/main.go
+++ b/cmd/generate-config/main.go
@@ -18,7 +18,6 @@ func main() {
 	dbURI := flag.String("db", "", "The DB URI to use for all components (PostgreSQL only)")
 	dirPath := flag.String("dir", "./", "The folder to use for paths (like SQLite databases, media storage)")
 	normalise := flag.String("normalise", "", "Normalise an existing configuration file by adding new/missing options and defaults")
-	polylith := flag.Bool("polylith", false, "Generate a config that makes sense for polylith deployments")
 	flag.Parse()
 
 	var cfg *config.Dendrite
@@ -27,14 +26,14 @@ func main() {
 			Version: config.Version,
 		}
 		cfg.Defaults(config.DefaultOpts{
-			Generate:   true,
-			Monolithic: !*polylith,
+			Generate:       true,
+			SingleDatabase: true,
 		})
 		if *serverName != "" {
 			cfg.Global.ServerName = gomatrixserverlib.ServerName(*serverName)
 		}
 		uri := config.DataSource(*dbURI)
-		if *polylith || uri.IsSQLite() || uri == "" {
+		if uri.IsSQLite() || uri == "" {
 			for name, db := range map[string]*config.DatabaseOptions{
 				"federationapi": &cfg.FederationAPI.Database,
 				"keyserver":     &cfg.KeyServer.Database,
@@ -43,6 +42,7 @@ func main() {
 				"roomserver":    &cfg.RoomServer.Database,
 				"syncapi":       &cfg.SyncAPI.Database,
 				"userapi":       &cfg.UserAPI.AccountDatabase,
+				"relayapi":      &cfg.RelayAPI.Database,
 			} {
 				if uri == "" {
 					path := filepath.Join(*dirPath, fmt.Sprintf("dendrite_%s.db", name))
@@ -96,7 +96,7 @@ func main() {
 		}
 	} else {
 		var err error
-		if cfg, err = config.Load(*normalise, !*polylith); err != nil {
+		if cfg, err = config.Load(*normalise); err != nil {
 			panic(err)
 		}
 	}
diff --git a/cmd/resolve-state/main.go b/cmd/resolve-state/main.go
index f8bb130c..59c66aed 100644
--- a/cmd/resolve-state/main.go
+++ b/cmd/resolve-state/main.go
@@ -40,7 +40,7 @@ func main() {
 		Level: "error",
 	})
 	cfg.ClientAPI.RegistrationDisabled = true
-	base := base.NewBaseDendrite(cfg, "ResolveState", base.DisableMetrics)
+	base := base.NewBaseDendrite(cfg, base.DisableMetrics)
 	args := flag.Args()
 
 	fmt.Println("Room version", *roomVersion)