Fix lint issues

Signed-off-by: amaslennikov <amaslennikov@nvidia.com>

pkg/resources/server.go

@@ -51,6 +51,7 @@ type resourceServer struct {
 const (
 	rsWatchInterval    = 5 * time.Second
 	serverStartTimeout = 5 * time.Second
+	unix               = "unix"
 )
 
 // NewResourceServer returns an instance of ResourceServer
@@ -77,7 +78,7 @@ func NewResourceServer(prefix, suffix string, pluginWatch, useCdi bool, rp types
 }
 
 func (rs *resourceServer) register() error {
-	kubeletEndpoint := "unix:" + filepath.Join(types.DeprecatedSockDir, types.KubeEndPoint)
+	kubeletEndpoint := unix + ":" + filepath.Join(types.DeprecatedSockDir, types.KubeEndPoint)
 	conn, err := grpc.Dial(kubeletEndpoint, grpc.WithTransportCredentials(insecure.NewCredentials()))
 	if err != nil {
 		glog.Errorf("%s device plugin unable connect to Kubelet : %v", rs.resourcePool.GetResourceName(), err)
@@ -252,7 +253,7 @@ func (rs *resourceServer) Start() error {
 	}
 
 	glog.Infof("starting %s device plugin endpoint at: %s\n", resourceName, rs.endPoint)
-	lis, err := net.Listen("unix", rs.sockPath)
+	lis, err := net.Listen(unix, rs.sockPath)
 	if err != nil {
 		glog.Errorf("error starting %s device plugin endpoint: %v", resourceName, err)
 		return err
@@ -273,7 +274,7 @@ func (rs *resourceServer) Start() error {
 	// Wait for server to start by launching a blocking connection
 	ctx, _ := context.WithTimeout(context.TODO(), serverStartTimeout)
 	conn, err := grpc.DialContext(
-		ctx, "unix:"+rs.sockPath, grpc.WithTransportCredentials(insecure.NewCredentials()), grpc.WithBlock())
+		ctx, unix+":"+rs.sockPath, grpc.WithTransportCredentials(insecure.NewCredentials()), grpc.WithBlock())
 
 	if err != nil {
 		glog.Errorf("error. unable to establish test connection with %s gRPC server: %v", resourceName, err)

pkg/resources/testing.go

@@ -127,7 +127,7 @@ func (s *fakeRegistrationServer) Register(
 }
 
 func (s *fakeRegistrationServer) start() {
-	l, err := net.Listen("unix", path.Join(s.sockDir, types.KubeEndPoint))
+	l, err := net.Listen(unix, path.Join(s.sockDir, types.KubeEndPoint))
 	if err != nil {
 		panic(err)
 	}
@@ -145,7 +145,7 @@ func (s *fakeRegistrationServer) waitForServer(timeout time.Duration) error {
 		if time.Now().After(maxWaitTime) {
 			return fmt.Errorf("waiting for the fake registration server timed out")
 		}
-		c, err := net.DialTimeout("unix", path.Join(s.sockDir, types.KubeEndPoint), time.Second)
+		c, err := net.DialTimeout(unix, path.Join(s.sockDir, types.KubeEndPoint), time.Second)
 		if err == nil {
 			return c.Close()
 		}

pkg/utils/utils.go

@@ -42,6 +42,7 @@ const (
 	classIDBitSize       = 64
 	maxVendorName        = 20
 	maxProductName       = 40
+	ellipsis             = "..."
 )
 
 // DetectPluginWatchMode returns true if plugins registry directory exist
@@ -504,7 +505,7 @@ func HasDefaultRoute(pciAddr string) (bool, error) {
 func NormalizeVendorName(vendor string) string {
 	vendorName := vendor
 	if len(vendor) > maxVendorName {
-		vendorName = string([]byte(vendorName)[0:17]) + "..."
+		vendorName = string([]byte(vendorName)[0:17]) + ellipsis
 	}
 	return vendorName
 }
@@ -513,7 +514,7 @@ func NormalizeVendorName(vendor string) string {
 func NormalizeProductName(product string) string {
 	productName := product
 	if len(product) > maxProductName {
-		productName = string([]byte(productName)[0:37]) + "..."
+		productName = string([]byte(productName)[0:37]) + ellipsis
 	}
 	return productName
 }