Organize backend into product executable and shared Go modules

backend/product/app/runtime/services.go

@@ -0,0 +1,39 @@
+package runtime
+
+import (
+	"git.sendico.io/tech/sxchnge/product/app/api"
+	"git.sendico.io/tech/sxchnge/product/app/health/status"
+	"git.sendico.io/tech/sxchnge/shared/errors"
+	"git.sendico.io/tech/sxchnge/shared/service"
+	"go.uber.org/zap"
+)
+
+func (a *APIImp) installMicroservice(srv mservice.MicroService) {
+	a.services = append(a.services, srv)
+	a.logger.Info("Microservice installed", zap.String("service", srv.Name()))
+}
+
+func (a *APIImp) addMicroservice(srvf api.MicroServiceFactoryT) error {
+	srv, err := srvf(a)
+	if err != nil {
+		a.logger.Error("Failed to install a microservice", zap.Error(err))
+		return err
+	}
+
+	a.installMicroservice(srv)
+	return nil
+}
+
+func (a *APIImp) installServices() error {
+	for _, service := range a.runtime.Services {
+		if service.Factory == nil {
+			return merrors.InvalidArgument("microservice factory is required", "runtime.services")
+		}
+		if err := a.addMicroservice(service.Factory); err != nil {
+			return err
+		}
+	}
+
+	a.health.SetStatus(health.SSRunning)
+	return nil
+}