kubernetes/staging/src/k8s.io/apiserver/pkg/authentication/token/union/union.go

type unionAuthTokenHandler …

// New returns a token authenticator that validates credentials using a chain of authenticator.Token objects.
// The entire chain is tried until one succeeds. If all fail, an aggregate error is returned.
func New(authTokenHandlers ...authenticator.Token) authenticator.Token { … }

// NewFailOnError returns a token authenticator that validates credentials using a chain of authenticator.Token objects.
// The first error short-circuits the chain.
func NewFailOnError(authTokenHandlers ...authenticator.Token) authenticator.Token { … }

// AuthenticateToken authenticates the token using a chain of authenticator.Token objects.
func (authHandler *unionAuthTokenHandler) AuthenticateToken(ctx context.Context, token string) (*authenticator.Response, bool, error) { … }