Add context on Authenticate func

.gitignore

@@ -10,3 +10,5 @@
 
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
+
+vendor

auth/authenticator.go

@@ -1,11 +1,15 @@
 package auth
 
+import (
+	"context"
+)
+
 type Authenticator interface {
-	Authenticate(Credential) (Credential, error)
+	Authenticate(context.Context, Credential) (Credential, error)
 }
 
-type AuthenticatorFunc func(Credential) (Credential, error)
+type AuthenticatorFunc func(context.Context, Credential) (Credential, error)
 
-func (a AuthenticatorFunc) Authenticate(credential Credential) (Credential, error) {
-	return a(credential)
+func (a AuthenticatorFunc) Authenticate(ctx context.Context, credential Credential) (Credential, error) {
+	return a(ctx, credential)
 }

middleware/auth.go

@@ -74,17 +74,18 @@ func WithSuccessMiddleware(middleware httpware.Middleware) AuthOption {
 
 // NewAuthenticateFunc is an AuthenticateFunc that find, authenticate and hydrate credentials on the request context
 func NewAuthenticateFunc(authenticator auth.Authenticator, options ...AuthFuncOption) AuthenticateFunc {
-	config := newAuthFuncConfig(options...)
+	config := NewAuthFuncConfig(options...)
 	return func(request *http.Request) (*http.Request, error) {
+		ctx := request.Context()
 		credential := config.credentialFinder(request)
 		if authenticator != nil {
-			creds, err := authenticator.Authenticate(credential)
+			creds, err := authenticator.Authenticate(ctx, credential)
 			if err != nil {
 				return request, err
 			}
 			credential = creds
 		}
-		return request.WithContext(auth.CredentialToContext(request.Context(), credential)), nil
+		return request.WithContext(auth.CredentialToContext(ctx, credential)), nil
 	}
 }
 
@@ -101,7 +102,7 @@ func (o *AuthFuncConfig) apply(options ...AuthFuncOption) {
 	}
 }
 
-func newAuthFuncConfig(options ...AuthFuncOption) *AuthFuncConfig {
+func NewAuthFuncConfig(options ...AuthFuncOption) *AuthFuncConfig {
 	opts := &AuthFuncConfig{
 		credentialFinder: DefaultCredentialFinder,
 	}

middleware/auth_test.go

@@ -179,7 +179,7 @@ func TestNewAuthenticateFunc_WithCredentialFinder(t *testing.T) {
 	request := httptest.NewRequest(http.MethodGet, "http://fake-addr", nil)
 
 	authenticator := &mocks.Authenticator{}
-	authenticator.On("Authenticate", "my_credential_finder_value").Return("my_authenticate_credential", nil)
+	authenticator.On("Authenticate", context.TODO(), "my_credential_finder_value").Return("my_authenticate_credential", nil)
 
 	authenticateFunc := middleware.NewAuthenticateFunc(
 		authenticator,