Auth Wrapper (#1174)

* Auth Wrapper

* Tweak cmd flag

* auth_excludes => auth_exclude

* Make Auth.Excludes variadic

* Use metadata.Get (passes through http and http2 it will go through various case formats)

* fix auth wrapper auth.Auth interface initialisation

Co-authored-by: Asim Aslam <asim@aslam.me>

auth/auth.go

@@ -11,6 +11,8 @@ type Auth interface {
 	String() string
 	// Init the auth package
 	Init(opts ...Option) error
+	// Options returns the options set
+	Options() Options
 	// Generate a new auth Account
 	Generate(id string, opts ...GenerateOption) (*Account, error)
 	// Revoke an authorization Account

auth/default.go

@@ -18,6 +18,11 @@ func (a *noop) Init(...Option) error {
 	return nil
 }
 
+// Options set in init
+func (a *noop) Options() Options {
+	return a.options
+}
+
 // Generate a new auth Account
 func (a *noop) Generate(id string, ops ...GenerateOption) (*Account, error) {
 	return nil, nil

auth/jwt/jwt.go

@@ -33,6 +33,10 @@ func (s *svc) String() string {
 	return "jwt"
 }
 
+func (s *svc) Options() auth.Options {
+	return s.options
+}
+
 func (s *svc) Init(opts ...auth.Option) error {
 	for _, o := range opts {
 		o(&s.options)

auth/options.go

@@ -7,10 +7,18 @@ import (
 type Options struct {
 	PublicKey  []byte
 	PrivateKey []byte
+	Excludes   []string
 }
 
 type Option func(o *Options)
 
+// Excludes endpoints from auth
+func Excludes(excludes ...string) Option {
+	return func(o *Options) {
+		o.Excludes = excludes
+	}
+}
+
 // PublicKey is the JWT public key
 func PublicKey(key string) Option {
 	return func(o *Options) {

auth/service/service.go

@@ -37,6 +37,10 @@ func (s *svc) Init(opts ...auth.Option) error {
 	return nil
 }
 
+func (s *svc) Options() auth.Options {
+	return s.options
+}
+
 // Generate a new auth account
 func (s *svc) Generate(id string, opts ...auth.GenerateOption) (*auth.Account, error) {
 	// construct the request