Move out the token package to util

util/token/token.go

@@ -0,0 +1,33 @@
+package token
+
+import (
+	"errors"
+	"time"
+
+	"github.com/micro/go-micro/v2/auth"
+)
+
+var (
+	// ErrNotFound is returned when a token cannot be found
+	ErrNotFound = errors.New("token not found")
+	// ErrEncodingToken is returned when the service encounters an error during encoding
+	ErrEncodingToken = errors.New("error encoding the token")
+	// ErrInvalidToken is returned when the token provided is not valid
+	ErrInvalidToken = errors.New("invalid token provided")
+)
+
+// Provider generates and inspects tokens
+type Provider interface {
+	Generate(account *auth.Account, opts ...GenerateOption) (*Token, error)
+	Inspect(token string) (*auth.Account, error)
+	String() string
+}
+
+type Token struct {
+	// The actual token
+	Token string `json:"token"`
+	// Time of token creation
+	Created time.Time `json:"created"`
+	// Time of token expiry
+	Expiry time.Time `json:"expiry"`
+}