feat: user service

gateway/cmd/gateway/main.go

@@ -13,6 +13,7 @@ import (
 	"galaxy/gateway/internal/authn"
 	"galaxy/gateway/internal/config"
 	"galaxy/gateway/internal/downstream"
+	"galaxy/gateway/internal/downstream/userservice"
 	"galaxy/gateway/internal/events"
 	"galaxy/gateway/internal/grpcapi"
 	"galaxy/gateway/internal/logging"
@@ -184,12 +185,27 @@ func newAuthenticatedGRPCDependencies(ctx context.Context, cfg config.Config, lo
 		)
 	}
 
+	userRoutes, closeUserServiceRoutes, err := userservice.NewRoutes(cfg.UserService.BaseURL)
+	if err != nil {
+		closeErr := errors.Join(
+			fallbackSessionCache.Close(),
+			replayStore.Close(),
+			sessionSubscriber.Close(),
+			clientEventSubscriber.Close(),
+		)
+		return grpcapi.ServerDependencies{}, nil, nil, errors.Join(
+			fmt.Errorf("build authenticated grpc dependencies: user service routes: %w", err),
+			closeErr,
+		)
+	}
+
 	cleanup := func() error {
 		return errors.Join(
 			fallbackSessionCache.Close(),
 			replayStore.Close(),
 			sessionSubscriber.Close(),
 			clientEventSubscriber.Close(),
+			closeUserServiceRoutes(),
 		)
 	}
 
@@ -227,7 +243,7 @@ func newAuthenticatedGRPCDependencies(ctx context.Context, cfg config.Config, lo
 
 	return grpcapi.ServerDependencies{
 		Service:        grpcapi.NewFanOutPushStreamService(pushHub, responseSigner, nil, logger),
-		Router:         downstream.NewStaticRouter(nil),
+		Router:         downstream.NewStaticRouter(userRoutes),
 		ResponseSigner: responseSigner,
 		SessionCache:   sessionCache,
 		ReplayStore:    replayStore,