improve shutdown and app service boilerplate

pkg/demo/demogrpc/server.go

@@ -0,0 +1,30 @@
+package demogrpc
+
+import (
+	"gitea.libretechconsulting.com/rmcguire/go-app/pkg/srv/grpc/opts"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+
+	demoAppPb "gitea.libretechconsulting.com/rmcguire/go-server-with-otel/api/demo/app/v1alpha1"
+)
+
+func (ds *DemoGRPCServer) GetDialOpts() []grpc.DialOption {
+	return []grpc.DialOption{
+		// NOTE: Necessary for grpc-gateway to connect to grpc server
+		// Update if grpc service has credentials, tls, etc..
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+	}
+}
+
+func (ds *DemoGRPCServer) GetServices() []*opts.GRPCService {
+	return []*opts.GRPCService{
+		{
+			Name:    "Demo App",
+			Type:    &demoAppPb.DemoAppService_ServiceDesc,
+			Service: ds,
+			GwRegistrationFuncs: []opts.GwRegistrationFunc{
+				demoAppPb.RegisterDemoAppServiceHandler,
+			},
+		},
+	}
+}