jwt

type Config struct {
	// Signing key to validate token.
	// Required if ValidationKeyGetter is nil.
	SigningKey interface{}

	// The function that will return the Key to validate the JWT.
	// It can be either a shared secret or a public key.
	// Required if SigningKey is nil.
	// First use this.
	ValidationKeyGetter jwt.Keyfunc

	// Signing method, used to verify tokens are signed with the specific signing algorithm.
	// Optional. Default: jwt.SigningMethodHS256.
	SigningMethod jwt.SigningMethod

	// The key name in the context where the user information
	// from the JWT will be stored.
	// Optional. Default: "user"
	ContextKey string

	// Claims are extendable claims data defining token content.
	// Optional. Default: jwt.MapClaims
	Claims jwt.Claims

	// Debug flag turns on debugging output
	// Optional. Default: false
	Debug bool

	// When set, all requests with the OPTIONS method will use authentication
	// Optional. Default: false
	EnableAuthOnOptions bool

	// A boolean indicating if the credentials are optional or not
	// Optional. Default: false
	CredentialsOptional bool

	// A function that extracts the token from the request
	// Optional. Default: FromAuthHeader (i.e., from Authorization header as bearer token)
	Extractor TokenExtractor

	// The function that will be called when there's an error validating the token
	// Optional. Default: OnError
	ErrorHandler ErrorHandler

	// The function that will be called before set value into context.
	// Used to customize the value will be stored into context.
	// Optional. Default: ContextValueSetClaims
	ContextValueFunc ContextValueFunc
}

type ContextValueFunc func(token *jwt.Token) (interface{}, error)

type ErrorHandler func(w http.ResponseWriter, r *http.Request, err error)

type JWT struct {
	// contains filtered or unexported fields
}

type PrintLogger interface {
	Println(v ...interface{})
}

type TokenExtractor func(r *http.Request) (string, error)