refactor nanoid package (networkservicemesh#1608)

Signed-off-by: denis-tingaikin <denis.tingajkin@xored.com>

pkg/networkservice/common/mechanisms/kernel/client.go

@@ -42,7 +42,7 @@ type kernelMechanismClient struct {
 // NewClient - returns client that sets kernel preferred mechanism
 func NewClient(opts ...Option) networkservice.NetworkServiceClient {
 	o := &options{
-		interfaceNameGenerator: nanoid.LinuxInterfaceNameGenerator,
+		interfaceNameGenerator: nanoid.GenerateLinuxInterfaceName,
 	}
 	for _, opt := range opts {
 		opt(o)

pkg/networkservice/common/mechanisms/kernel/server.go

@@ -40,7 +40,7 @@ type kernelMechanismServer struct {
 // NewServer - creates a NetworkServiceServer that requests a kernel interface and populates the netns inode
 func NewServer(opts ...Option) networkservice.NetworkServiceServer {
 	o := &options{
-		interfaceNameGenerator: nanoid.LinuxInterfaceNameGenerator,
+		interfaceNameGenerator: nanoid.GenerateLinuxInterfaceName,
 	}
 	for _, opt := range opts {
 		opt(o)

pkg/tools/nanoid/generator.go

@@ -59,16 +59,9 @@ func generateRandomBuffer(generator io.Reader, step int) ([]byte, error) {
 	return buffer, nil
 }
 
-// New creates a new nanoid generator with specified options
-func New(opt ...Option) func(int) (string, error) {
-	return func(size int) (string, error) {
-		return RandomString(size, opt...)
-	}
-}
-
-// RandomString generates a random string based on size.
+// GenerateString generates a random string based on size.
 // Original JavaScript implementation: https://github.com/ai/nanoid/blob/main/README.md
-func RandomString(size int, opt ...Option) (string, error) {
+func GenerateString(size int, opt ...Option) (string, error) {
 	opts := &generatorOpts{
 		alphabet:            DefaultAlphabet,
 		randomByteGenerator: rand.Reader,

pkg/tools/nanoid/generator_test.go

@@ -32,7 +32,7 @@ const (
 func TestNoCollisions(t *testing.T) {
 	used := make(map[string]bool)
 	for i := 0; i < 50*1000; i++ {
-		id, err := nanoid.RandomString(idLen)
+		id, err := nanoid.GenerateString(idLen)
 		require.NoError(t, err)
 		_, ok := used[id]
 		require.False(t, ok, "Collision detected for id: %s", id)
@@ -45,7 +45,7 @@ func TestFlatDistribution(t *testing.T) {
 
 	chars := make(map[rune]int)
 	for i := 0; i < count; i++ {
-		id, err := nanoid.RandomString(idLen)
+		id, err := nanoid.GenerateString(idLen)
 		require.NoError(t, err, "Error generating nanoid")
 		for _, char := range id {
 			chars[char]++
@@ -71,7 +71,7 @@ func TestFlatDistribution(t *testing.T) {
 
 func TestCustomAlphabet(t *testing.T) {
 	alphabet := "abcd"
-	id, err := nanoid.RandomString(idLen, nanoid.WithAlphabet(alphabet))
+	id, err := nanoid.GenerateString(idLen, nanoid.WithAlphabet(alphabet))
 	require.NoError(t, err)
 
 	for _, c := range id {

pkg/tools/nanoid/utils.go

@@ -26,11 +26,11 @@ const (
 	ifPrefix = "nsm"
 )
 
-// LinuxInterfaceNameGenerator - returns a random interface name with "nsm" prefix
+// GenerateLinuxInterfaceName - returns a random interface name with "nsm" prefix
 // to achieve a 1% chance of name collision, you need to generate approximately 68 billon names
-func LinuxInterfaceNameGenerator() (string, error) {
+func GenerateLinuxInterfaceName() (string, error) {
 	ifIDLen := kernelmech.LinuxIfMaxLength - len(ifPrefix)
-	id, err := RandomString(ifIDLen)
+	id, err := GenerateString(ifIDLen)
 	if err != nil {
 		return "", err
 	}