From ad11e893b8c3eda4b2f7e473baf65c59d1701f52 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ignacio=20G=C3=B3mez?= <iegomez@uc.cl>
Date: Wed, 24 May 2023 01:13:58 -0300
Subject: [PATCH] Fix implementation.

---
 backends/grpc.go      | 15 +++++++++++----
 backends/grpc_test.go |  6 ++++++
 2 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/backends/grpc.go b/backends/grpc.go
index 481ef78..d851eea 100644
--- a/backends/grpc.go
+++ b/backends/grpc.go
@@ -28,6 +28,7 @@ type GRPC struct {
 	dialOptions      []grpc.DialOption
 	hostname         string
 	timeout          int
+	name             string
 }
 
 const defaultGRPCTimeoutMs = 500
@@ -140,11 +141,17 @@ func (o *GRPC) CheckAcl(username, topic, clientid string, acc int32) (bool, erro
 
 // GetName gets the gRPC backend's name.
 func (o *GRPC) GetName() string {
-	resp, err := o.client.GetName(context.Background(), &empty.Empty{})
-	if err != nil {
-		return "grpc get name error"
+	if len(o.name) == 0 {
+		resp, err := o.client.GetName(context.Background(), &empty.Empty{})
+
+		if err != nil {
+			o.name = "gRPC"
+		} else {
+			o.name = resp.Name
+		}
 	}
-	return resp.Name
+
+	return o.name
 }
 
 // Halt signals the gRPC backend that mosquitto is halting.
diff --git a/backends/grpc_test.go b/backends/grpc_test.go
index 0772e23..640a7d6 100644
--- a/backends/grpc_test.go
+++ b/backends/grpc_test.go
@@ -113,6 +113,9 @@ func TestGRPC(t *testing.T) {
 					auth, err := g.GetUser(grpcUsername, grpcPassword, grpcClientId)
 					So(err, ShouldNotBeNil)
 					c.So(auth, ShouldBeFalse)
+
+					name := g.GetName()
+					So(name, ShouldEqual, "gRPC")
 				})
 
 				Convey("it should work after the service comes back up", func(c C) {
@@ -125,6 +128,9 @@ func TestGRPC(t *testing.T) {
 					auth, err := g.GetUser(grpcUsername, grpcPassword, grpcClientId)
 					So(err, ShouldBeNil)
 					c.So(auth, ShouldBeTrue)
+
+					name := g.GetName()
+					So(name, ShouldEqual, "MyGRPCBackend")
 				})
 			})
 		})