Updated auth interface (#1384)

* Updated  auth interface

* Add Rule

* Remove Rule

* Return token from Renew

* Renew => Refresh

* Implement Tokens & Default Auth Implementation

* Change default auth to noop

* Change default auth to noop

* Move token.Token to auth.Token

* Remove Token from Account

* Auth service implementation

* Decode JWT locally

* Cookie for secret

* Move string to bottom of interface definition

* Depricate auth_exclude

* Update auth wrappers

* Update go.sum

Co-authored-by: Ben Toogood <ben@micro.mu>

api/server/auth/auth.go

@@ -43,44 +43,42 @@ func (h authHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 	} else {
 		// Get the token out the cookies if not provided in headers
 		if c, err := req.Cookie("micro-token"); err == nil && c != nil {
-			token = strings.TrimPrefix(c.Value, auth.CookieName+"=")
+			token = strings.TrimPrefix(c.Value, auth.TokenCookieName+"=")
 			req.Header.Set("Authorization", BearerScheme+token)
 		}
 	}
 
-	// Return if the user disabled auth on this endpoint
+	// Get the account using the token, fallback to a blank account
-	excludes := h.auth.Options().Exclude
+	// since some endpoints can be unauthenticated, so the lack of an
-	excludes = append(excludes, DefaultExcludes...)
+	// account doesn't necesserially mean a forbidden request
-
+	acc, err := h.auth.Inspect(token)
-	loginURL := h.auth.Options().LoginURL
+	if err != nil {
-	if len(loginURL) > 0 {
+		acc = &auth.Account{}
-		excludes = append(excludes, loginURL)
 	}
+	err = h.auth.Verify(acc, &auth.Resource{
+		Type:     "service",
+		Name:     "go.micro.web",
+		Endpoint: req.URL.Path,
+	})
 
-	for _, e := range excludes {
+	// The account has the necessary permissions to access the
-		// is a standard exclude, e.g. /rpc
+	// resource
-		if e == req.URL.Path {
+	if err == nil {
 		h.handler.ServeHTTP(w, req)
 		return
 	}
 
-		// is a wildcard exclude, e.g. /services/*
+	// The account is set, but they don't have enough permissions,
-		wildcard := strings.Replace(e, "*", "", 1)
+	// hence we 403.
-		if strings.HasSuffix(e, "*") && strings.HasPrefix(req.URL.Path, wildcard) {
+	if len(acc.ID) > 0 {
-			h.handler.ServeHTTP(w, req)
+		w.WriteHeader(http.StatusForbidden)
-			return
-		}
-	}
-
-	// If the token is valid, allow the request
-	if _, err := h.auth.Verify(token); err == nil {
-		h.handler.ServeHTTP(w, req)
 		return
 	}
 
 	// If there is no auth login url set, 401
+	loginURL := h.auth.Options().LoginURL
 	if loginURL == "" {
-		w.WriteHeader(401)
+		w.WriteHeader(http.StatusUnauthorized)
 		return
 	}
 

auth/auth.go

@@ -4,24 +4,44 @@ package auth
 import (
 	"context"
 	"encoding/json"
+	"errors"
 	"time"
 
 	"github.com/micro/go-micro/v2/metadata"
 )
 
+var (
+	// ErrNotFound is returned when a resouce cannot be found
+	ErrNotFound = errors.New("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")
+	// ErrInvalidRole is returned when the role provided was invalid
+	ErrInvalidRole = errors.New("invalid role")
+	// ErrForbidden is returned when a user does not have the necessary roles to access a resource
+	ErrForbidden = errors.New("resource forbidden")
+)
+
 // Auth providers authentication and authorization
 type Auth interface {
-	// Init the auth package
+	// Init the auth
-	Init(opts ...Option) error
+	Init(opts ...Option)
-	// Options returns the options set
+	// Options set for auth
 	Options() Options
-	// Generate a new auth Account
+	// Generate a new account
 	Generate(id string, opts ...GenerateOption) (*Account, error)
-	// Revoke an authorization Account
+	// Grant access to a resource
-	Revoke(token string) error
+	Grant(role string, res *Resource) error
-	// Verify an account token
+	// Revoke access to a resource
-	Verify(token string) (*Account, error)
+	Revoke(role string, res *Resource) error
-	// String returns the implementation
+	// Verify an account has access to a resource
+	Verify(acc *Account, res *Resource) error
+	// Inspect a token
+	Inspect(token string) (*Account, error)
+	// Refresh an account using a secret
+	Refresh(secret string, opts ...RefreshOption) (*Token, error)
+	// String returns the name of the implementation
 	String() string
 }
 
@@ -31,40 +51,47 @@ type Resource struct {
 	Name string
 	// Type of resource, e.g.
 	Type string
-}
+	// Endpoint resource e.g NotesService.Create
-
+	Endpoint string
-// Role an account has
-type Role struct {
-	// Name of the role
-	Name string
-	// The resource it has access
-	// TODO: potentially remove
-	Resource *Resource
 }
 
 // Account provided by an auth provider
 type Account struct {
 	// ID of the account (UUIDV4, email or username)
-	Id string `json:"id"`
+	ID string `json:"id"`
-	// Token used to authenticate
+	// Secret used to renew the account
-	Token string `json:"token"`
+	Secret *Token `json:"secret"`
-	// Time of Account creation
-	Created time.Time `json:"created"`
-	// Time of Account expiry
-	Expiry time.Time `json:"expiry"`
 	// Roles associated with the Account
-	Roles []*Role `json:"roles"`
+	Roles []string `json:"roles"`
 	// Any other associated metadata
 	Metadata map[string]string `json:"metadata"`
 }
 
+// Token can be short or long lived
+type Token struct {
+	// The token itself
+	Token string `json:"token"`
+	// Type of token, e.g. JWT
+	Type string `json:"type"`
+	// Time of token creation
+	Created time.Time `json:"created"`
+	// Time of token expiry
+	Expiry time.Time `json:"expiry"`
+	// Subject of the token, e.g. the account ID
+	Subject string `json:"subject"`
+	// Roles granted to the token
+	Roles []string `json:"roles"`
+	// Metadata embedded in the token
+	Metadata map[string]string `json:"metadata"`
+}
+
 const (
-	// MetadataKey is the key used when storing the account
+	// MetadataKey is the key used when storing the account in metadata
-	// in metadata
 	MetadataKey = "auth-account"
-	// CookieName is the name of the cookie which stores the
+	// TokenCookieName is the name of the cookie which stores the auth token
-	// auth token
+	TokenCookieName = "micro-token"
-	CookieName = "micro-token"
+	// SecretCookieName is the name of the cookie which stores the auth secret
+	SecretCookieName = "micro-secret"
 )
 
 // AccountFromContext gets the account from the context, which

auth/default.go

@@ -1,122 +1,70 @@
 package auth
 
 import (
-	"encoding/base32"
+	"github.com/google/uuid"
-	"sync"
-	"time"
 )
 
 var (
 	DefaultAuth = NewAuth()
 )
 
-func genAccount(id string) *Account {
-	// return a pseudo account
-	return &Account{
-		Id:       id,
-		Token:    base32.StdEncoding.EncodeToString([]byte(id)),
-		Created:  time.Now(),
-		Expiry:   time.Now().Add(time.Hour * 24),
-		Metadata: make(map[string]string),
-	}
-}
-
-// NewAuth returns a new default registry which is memory
 func NewAuth(opts ...Option) Auth {
-	var options Options
+	return &noop{}
-	for _, o := range opts {
-		o(&options)
-	}
-
-	return &memory{
-		accounts: make(map[string]*Account),
-		opts:     options,
-	}
 }
 
-// TODO: replace with https://github.com/nats-io/nkeys
+type noop struct {
-// We'll then register public key in registry to use
-type memory struct {
 	opts Options
-	// accounts
-	sync.RWMutex
-	accounts map[string]*Account
 }
 
-func (n *memory) Init(opts ...Option) error {
+// String returns the name of the implementation
+func (n *noop) String() string {
+	return "noop"
+}
+
+// Init the auth
+func (n *noop) Init(opts ...Option) {
 	for _, o := range opts {
 		o(&n.opts)
 	}
-	return nil
 }
 
-func (n *memory) Options() Options {
+// Options set for auth
+func (n *noop) Options() Options {
 	return n.opts
 }
 
-func (n *memory) Generate(id string, opts ...GenerateOption) (*Account, error) {
+// Generate a new account
-	var options GenerateOptions
+func (n *noop) Generate(id string, opts ...GenerateOption) (*Account, error) {
-	for _, o := range opts {
+	options := NewGenerateOptions(opts...)
-		o(&options)
-	}
 
-	// return a pseudo account
-	acc := genAccount(id)
-
-	// set opts
-	if len(options.Roles) > 0 {
-		acc.Roles = options.Roles
-	}
-	if options.Metadata != nil {
-		acc.Metadata = options.Metadata
-	}
-
-	// TODO: don't overwrite
-	n.Lock()
-	// maybe save by account id?
-	n.accounts[acc.Token] = acc
-	n.Unlock()
-
-	return acc, nil
-}
-
-func (n *memory) Revoke(token string) error {
-	n.Lock()
-	delete(n.accounts, token)
-	n.Unlock()
-	return nil
-}
-
-func (n *memory) Verify(token string) (*Account, error) {
-	n.RLock()
-	defer n.RUnlock()
-
-	if len(token) == 0 {
-		// pseudo account?
-		return genAccount(""), nil
-	}
-
-	// try get the local account if it exists
-	if acc, ok := n.accounts[token]; ok {
-		return acc, nil
-	}
-
-	// decode the token otherwise
-	b, err := base32.StdEncoding.DecodeString(token)
-	if err != nil {
-		return genAccount(""), nil
-	}
-
-	// return a pseudo account based on token/id
 	return &Account{
-		Id:       string(b),
+		ID:       id,
-		Token:    token,
+		Roles:    options.Roles,
-		Created:  time.Now(),
+		Metadata: options.Metadata,
-		Expiry:   time.Now().Add(time.Hour * 24),
-		Metadata: make(map[string]string),
 	}, nil
 }
 
-func (n *memory) String() string {
+// Grant access to a resource
-	return "memory"
+func (n *noop) Grant(role string, res *Resource) error {
+	return nil
+}
+
+// Revoke access to a resource
+func (n *noop) Revoke(role string, res *Resource) error {
+	return nil
+}
+
+// Verify an account has access to a resource
+func (n *noop) Verify(acc *Account, res *Resource) error {
+	return nil
+}
+
+// Inspect a token
+func (n *noop) Inspect(token string) (*Account, error) {
+	return &Account{ID: uuid.New().String()}, nil
+}
+
+// Refresh an account using a secret
+func (n *noop) Refresh(secret string, opts ...RefreshOption) (*Token, error) {
+	return &Token{}, nil
 }

auth/jwt/jwt.go

@@ -1,133 +0,0 @@
-package jwt
-
-import (
-	"encoding/base64"
-	"errors"
-
-	"github.com/dgrijalva/jwt-go"
-	"github.com/micro/go-micro/v2/auth"
-)
-
-var (
-	// ErrInvalidPrivateKey is returned when the service provided an invalid private key
-	ErrInvalidPrivateKey = errors.New("An invalid private key was provided")
-
-	// ErrEncodingToken is returned when the service encounters an error during encoding
-	ErrEncodingToken = errors.New("An error occured while encoding the JWT")
-
-	// ErrInvalidToken is returned when the token provided is not valid
-	ErrInvalidToken = errors.New("An invalid token was provided")
-
-	// ErrMissingToken is returned when no token is provided
-	ErrMissingToken = errors.New("A valid JWT is required")
-)
-
-// NewAuth returns a new instance of the Auth service
-func NewAuth(opts ...auth.Option) auth.Auth {
-	svc := new(svc)
-	svc.Init(opts...)
-	return svc
-}
-
-// svc is the JWT implementation of the Auth interface
-type svc struct {
-	options auth.Options
-}
-
-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)
-	}
-
-	return nil
-}
-
-// AuthClaims to be encoded in the JWT
-type AuthClaims struct {
-	Roles    []*auth.Role      `json:"roles"`
-	Metadata map[string]string `json:"metadata"`
-
-	jwt.StandardClaims
-}
-
-// Generate a new JWT
-func (s *svc) Generate(id string, ops ...auth.GenerateOption) (*auth.Account, error) {
-	// decode the private key
-	priv, err := base64.StdEncoding.DecodeString(s.options.PrivateKey)
-	if err != nil {
-		return nil, err
-	}
-
-	key, err := jwt.ParseRSAPrivateKeyFromPEM(priv)
-	if err != nil {
-		return nil, ErrEncodingToken
-	}
-
-	options := auth.NewGenerateOptions(ops...)
-	account := jwt.NewWithClaims(jwt.SigningMethodRS256, AuthClaims{
-		options.Roles, options.Metadata, jwt.StandardClaims{
-			Subject:   id,
-			ExpiresAt: options.Expiry.Unix(),
-		},
-	})
-
-	token, err := account.SignedString(key)
-	if err != nil {
-		return nil, err
-	}
-
-	return &auth.Account{
-		Id:       id,
-		Token:    token,
-		Roles:    options.Roles,
-		Metadata: options.Metadata,
-	}, nil
-}
-
-// Revoke an authorization account
-func (s *svc) Revoke(token string) error {
-	return nil
-}
-
-// Verify a JWT
-func (s *svc) Verify(token string) (*auth.Account, error) {
-	if token == "" {
-		return nil, ErrMissingToken
-	}
-
-	// decode the public key
-	pub, err := base64.StdEncoding.DecodeString(s.options.PublicKey)
-	if err != nil {
-		return nil, err
-	}
-
-	res, err := jwt.ParseWithClaims(token, &AuthClaims{}, func(token *jwt.Token) (interface{}, error) {
-		return jwt.ParseRSAPublicKeyFromPEM(pub)
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	if !res.Valid {
-		return nil, ErrInvalidToken
-	}
-
-	claims, ok := res.Claims.(*AuthClaims)
-	if !ok {
-		return nil, ErrInvalidToken
-	}
-
-	return &auth.Account{
-		Id:       claims.Subject,
-		Metadata: claims.Metadata,
-		Roles:    claims.Roles,
-	}, nil
-}

auth/options.go

@@ -4,6 +4,7 @@ import (
 	"time"
 
 	"github.com/micro/go-micro/v2/auth/provider"
+	"github.com/micro/go-micro/v2/store"
 )
 
 type Options struct {
@@ -13,20 +14,20 @@ type Options struct {
 	PublicKey string
 	// Private key base64 encoded
 	PrivateKey string
-	// Endpoints to exclude
-	Exclude []string
 	// Provider is an auth provider
 	Provider provider.Provider
 	// LoginURL is the relative url path where a user can login
 	LoginURL string
+	// Store to back auth
+	Store store.Store
 }
 
 type Option func(o *Options)
 
-// Exclude ecludes a set of endpoints from authorization
+// Store to back auth
-func Exclude(e ...string) Option {
+func Store(s store.Store) Option {
 	return func(o *Options) {
-		o.Exclude = e
+		o.Store = s
 	}
 }
 
@@ -44,8 +45,8 @@ func PrivateKey(key string) Option {
 	}
 }
 
-// Token sets an auth token
+// ServiceToken sets an auth token
-func Token(t string) Option {
+func ServiceToken(t string) Option {
 	return func(o *Options) {
 		o.Token = t
 	}
@@ -69,31 +70,31 @@ type GenerateOptions struct {
 	// Metadata associated with the account
 	Metadata map[string]string
 	// Roles/scopes associated with the account
-	Roles []*Role
+	Roles []string
-	//Expiry of the token
+	// SecretExpiry is the time the secret should live for
-	Expiry time.Time
+	SecretExpiry time.Duration
 }
 
 type GenerateOption func(o *GenerateOptions)
 
-// Metadata for the generated account
+// WithMetadata for the generated account
-func Metadata(md map[string]string) func(o *GenerateOptions) {
+func WithMetadata(md map[string]string) GenerateOption {
 	return func(o *GenerateOptions) {
 		o.Metadata = md
 	}
 }
 
-// Roles for the generated account
+// WithRoles for the generated account
-func Roles(rs []*Role) func(o *GenerateOptions) {
+func WithRoles(rs []string) GenerateOption {
 	return func(o *GenerateOptions) {
 		o.Roles = rs
 	}
 }
 
-// Expiry for the generated account's token expires
+// WithSecretExpiry for the generated account's secret expires
-func Expiry(ex time.Time) func(o *GenerateOptions) {
+func WithSecretExpiry(ex time.Duration) GenerateOption {
 	return func(o *GenerateOptions) {
-		o.Expiry = ex
+		o.SecretExpiry = ex
 	}
 }
 
@@ -103,9 +104,40 @@ func NewGenerateOptions(opts ...GenerateOption) GenerateOptions {
 	for _, o := range opts {
 		o(&options)
 	}
-	//set defualt expiry of token
+
-	if options.Expiry.IsZero() {
+	// set defualt expiry of secret
-		options.Expiry = time.Now().Add(time.Hour * 24)
+	if options.SecretExpiry == 0 {
+		options.SecretExpiry = time.Hour * 24 * 7
 	}
+
+	return options
+}
+
+type RefreshOptions struct {
+	// TokenExpiry is the time the token should live for
+	TokenExpiry time.Duration
+}
+
+type RefreshOption func(o *RefreshOptions)
+
+// WithTokenExpiry for the token
+func WithTokenExpiry(ex time.Duration) RefreshOption {
+	return func(o *RefreshOptions) {
+		o.TokenExpiry = ex
+	}
+}
+
+// NewRefreshOptions from a slice of options
+func NewRefreshOptions(opts ...RefreshOption) RefreshOptions {
+	var options RefreshOptions
+	for _, o := range opts {
+		o(&options)
+	}
+
+	// set defualt expiry of token
+	if options.TokenExpiry == 0 {
+		options.TokenExpiry = time.Minute
+	}
+
 	return options
 }

auth/service/proto/auth.pb.go

@@ -1,5 +1,5 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
-// source: micro/go-micro/auth/service/proto/auth.proto
+// source: auth/service/proto/auth.proto
 
 package go_micro_auth
 
@@ -20,13 +20,98 @@ var _ = math.Inf
 // proto package needs to be updated.
 const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
 
-type Account struct {
+type Token struct {
-	Id                   string            `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	Token                string            `protobuf:"bytes,1,opt,name=token,proto3" json:"token,omitempty"`
-	Token                string            `protobuf:"bytes,2,opt,name=token,proto3" json:"token,omitempty"`
+	Type                 string            `protobuf:"bytes,2,opt,name=type,proto3" json:"type,omitempty"`
 	Created              int64             `protobuf:"varint,3,opt,name=created,proto3" json:"created,omitempty"`
 	Expiry               int64             `protobuf:"varint,4,opt,name=expiry,proto3" json:"expiry,omitempty"`
-	Roles                []*Role           `protobuf:"bytes,5,rep,name=roles,proto3" json:"roles,omitempty"`
+	Subject              string            `protobuf:"bytes,5,opt,name=subject,proto3" json:"subject,omitempty"`
-	Metadata             map[string]string `protobuf:"bytes,6,rep,name=metadata,proto3" json:"metadata,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	Roles                []string          `protobuf:"bytes,6,rep,name=roles,proto3" json:"roles,omitempty"`
+	Metadata             map[string]string `protobuf:"bytes,7,rep,name=metadata,proto3" json:"metadata,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
+}
+
+func (m *Token) Reset()         { *m = Token{} }
+func (m *Token) String() string { return proto.CompactTextString(m) }
+func (*Token) ProtoMessage()    {}
+func (*Token) Descriptor() ([]byte, []int) {
+	return fileDescriptor_21300bfacc51fc2a, []int{0}
+}
+
+func (m *Token) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Token.Unmarshal(m, b)
+}
+func (m *Token) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Token.Marshal(b, m, deterministic)
+}
+func (m *Token) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Token.Merge(m, src)
+}
+func (m *Token) XXX_Size() int {
+	return xxx_messageInfo_Token.Size(m)
+}
+func (m *Token) XXX_DiscardUnknown() {
+	xxx_messageInfo_Token.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Token proto.InternalMessageInfo
+
+func (m *Token) GetToken() string {
+	if m != nil {
+		return m.Token
+	}
+	return ""
+}
+
+func (m *Token) GetType() string {
+	if m != nil {
+		return m.Type
+	}
+	return ""
+}
+
+func (m *Token) GetCreated() int64 {
+	if m != nil {
+		return m.Created
+	}
+	return 0
+}
+
+func (m *Token) GetExpiry() int64 {
+	if m != nil {
+		return m.Expiry
+	}
+	return 0
+}
+
+func (m *Token) GetSubject() string {
+	if m != nil {
+		return m.Subject
+	}
+	return ""
+}
+
+func (m *Token) GetRoles() []string {
+	if m != nil {
+		return m.Roles
+	}
+	return nil
+}
+
+func (m *Token) GetMetadata() map[string]string {
+	if m != nil {
+		return m.Metadata
+	}
+	return nil
+}
+
+type Account struct {
+	Id                   string            `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	Secret               *Token            `protobuf:"bytes,2,opt,name=secret,proto3" json:"secret,omitempty"`
+	Roles                []string          `protobuf:"bytes,3,rep,name=roles,proto3" json:"roles,omitempty"`
+	Metadata             map[string]string `protobuf:"bytes,4,rep,name=metadata,proto3" json:"metadata,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
 	XXX_unrecognized     []byte            `json:"-"`
 	XXX_sizecache        int32             `json:"-"`
@@ -36,7 +121,7 @@ func (m *Account) Reset()         { *m = Account{} }
 func (m *Account) String() string { return proto.CompactTextString(m) }
 func (*Account) ProtoMessage()    {}
 func (*Account) Descriptor() ([]byte, []int) {
-	return fileDescriptor_de609d4872dacc78, []int{0}
+	return fileDescriptor_21300bfacc51fc2a, []int{1}
 }
 
 func (m *Account) XXX_Unmarshal(b []byte) error {
@@ -64,28 +149,14 @@ func (m *Account) GetId() string {
 	return ""
 }
 
-func (m *Account) GetToken() string {
+func (m *Account) GetSecret() *Token {
 	if m != nil {
-		return m.Token
+		return m.Secret
 	}
-	return ""
+	return nil
 }
 
-func (m *Account) GetCreated() int64 {
+func (m *Account) GetRoles() []string {
-	if m != nil {
-		return m.Created
-	}
-	return 0
-}
-
-func (m *Account) GetExpiry() int64 {
-	if m != nil {
-		return m.Expiry
-	}
-	return 0
-}
-
-func (m *Account) GetRoles() []*Role {
 	if m != nil {
 		return m.Roles
 	}
@@ -99,56 +170,10 @@ func (m *Account) GetMetadata() map[string]string {
 	return nil
 }
 
-type Role struct {
-	Name                 string    `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
-	Resource             *Resource `protobuf:"bytes,2,opt,name=resource,proto3" json:"resource,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}  `json:"-"`
-	XXX_unrecognized     []byte    `json:"-"`
-	XXX_sizecache        int32     `json:"-"`
-}
-
-func (m *Role) Reset()         { *m = Role{} }
-func (m *Role) String() string { return proto.CompactTextString(m) }
-func (*Role) ProtoMessage()    {}
-func (*Role) Descriptor() ([]byte, []int) {
-	return fileDescriptor_de609d4872dacc78, []int{1}
-}
-
-func (m *Role) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Role.Unmarshal(m, b)
-}
-func (m *Role) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Role.Marshal(b, m, deterministic)
-}
-func (m *Role) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Role.Merge(m, src)
-}
-func (m *Role) XXX_Size() int {
-	return xxx_messageInfo_Role.Size(m)
-}
-func (m *Role) XXX_DiscardUnknown() {
-	xxx_messageInfo_Role.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Role proto.InternalMessageInfo
-
-func (m *Role) GetName() string {
-	if m != nil {
-		return m.Name
-	}
-	return ""
-}
-
-func (m *Role) GetResource() *Resource {
-	if m != nil {
-		return m.Resource
-	}
-	return nil
-}
-
 type Resource struct {
 	Name                 string   `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
 	Type                 string   `protobuf:"bytes,2,opt,name=type,proto3" json:"type,omitempty"`
+	Endpoint             string   `protobuf:"bytes,3,opt,name=endpoint,proto3" json:"endpoint,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`
@@ -158,7 +183,7 @@ func (m *Resource) Reset()         { *m = Resource{} }
 func (m *Resource) String() string { return proto.CompactTextString(m) }
 func (*Resource) ProtoMessage()    {}
 func (*Resource) Descriptor() ([]byte, []int) {
-	return fileDescriptor_de609d4872dacc78, []int{2}
+	return fileDescriptor_21300bfacc51fc2a, []int{2}
 }
 
 func (m *Resource) XXX_Unmarshal(b []byte) error {
@@ -193,8 +218,18 @@ func (m *Resource) GetType() string {
 	return ""
 }
 
+func (m *Resource) GetEndpoint() string {
+	if m != nil {
+		return m.Endpoint
+	}
+	return ""
+}
+
 type GenerateRequest struct {
-	Account              *Account `protobuf:"bytes,1,opt,name=account,proto3" json:"account,omitempty"`
+	Id                   string            `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	Roles                []string          `protobuf:"bytes,2,rep,name=roles,proto3" json:"roles,omitempty"`
+	Metadata             map[string]string `protobuf:"bytes,3,rep,name=metadata,proto3" json:"metadata,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	SecretExpiry         int64             `protobuf:"varint,4,opt,name=secret_expiry,json=secretExpiry,proto3" json:"secret_expiry,omitempty"`
 	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
 	XXX_unrecognized     []byte            `json:"-"`
 	XXX_sizecache        int32             `json:"-"`
@@ -204,7 +239,7 @@ func (m *GenerateRequest) Reset()         { *m = GenerateRequest{} }
 func (m *GenerateRequest) String() string { return proto.CompactTextString(m) }
 func (*GenerateRequest) ProtoMessage()    {}
 func (*GenerateRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_de609d4872dacc78, []int{3}
+	return fileDescriptor_21300bfacc51fc2a, []int{3}
 }
 
 func (m *GenerateRequest) XXX_Unmarshal(b []byte) error {
@@ -225,13 +260,34 @@ func (m *GenerateRequest) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_GenerateRequest proto.InternalMessageInfo
 
-func (m *GenerateRequest) GetAccount() *Account {
+func (m *GenerateRequest) GetId() string {
 	if m != nil {
-		return m.Account
+		return m.Id
+	}
+	return ""
+}
+
+func (m *GenerateRequest) GetRoles() []string {
+	if m != nil {
+		return m.Roles
 	}
 	return nil
 }
 
+func (m *GenerateRequest) GetMetadata() map[string]string {
+	if m != nil {
+		return m.Metadata
+	}
+	return nil
+}
+
+func (m *GenerateRequest) GetSecretExpiry() int64 {
+	if m != nil {
+		return m.SecretExpiry
+	}
+	return 0
+}
+
 type GenerateResponse struct {
 	Account              *Account `protobuf:"bytes,1,opt,name=account,proto3" json:"account,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
@@ -243,7 +299,7 @@ func (m *GenerateResponse) Reset()         { *m = GenerateResponse{} }
 func (m *GenerateResponse) String() string { return proto.CompactTextString(m) }
 func (*GenerateResponse) ProtoMessage()    {}
 func (*GenerateResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_de609d4872dacc78, []int{4}
+	return fileDescriptor_21300bfacc51fc2a, []int{4}
 }
 
 func (m *GenerateResponse) XXX_Unmarshal(b []byte) error {
@@ -271,8 +327,87 @@ func (m *GenerateResponse) GetAccount() *Account {
 	return nil
 }
 
+type GrantRequest struct {
+	Role                 string    `protobuf:"bytes,1,opt,name=role,proto3" json:"role,omitempty"`
+	Resource             *Resource `protobuf:"bytes,2,opt,name=resource,proto3" json:"resource,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}  `json:"-"`
+	XXX_unrecognized     []byte    `json:"-"`
+	XXX_sizecache        int32     `json:"-"`
+}
+
+func (m *GrantRequest) Reset()         { *m = GrantRequest{} }
+func (m *GrantRequest) String() string { return proto.CompactTextString(m) }
+func (*GrantRequest) ProtoMessage()    {}
+func (*GrantRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_21300bfacc51fc2a, []int{5}
+}
+
+func (m *GrantRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_GrantRequest.Unmarshal(m, b)
+}
+func (m *GrantRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_GrantRequest.Marshal(b, m, deterministic)
+}
+func (m *GrantRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GrantRequest.Merge(m, src)
+}
+func (m *GrantRequest) XXX_Size() int {
+	return xxx_messageInfo_GrantRequest.Size(m)
+}
+func (m *GrantRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_GrantRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GrantRequest proto.InternalMessageInfo
+
+func (m *GrantRequest) GetRole() string {
+	if m != nil {
+		return m.Role
+	}
+	return ""
+}
+
+func (m *GrantRequest) GetResource() *Resource {
+	if m != nil {
+		return m.Resource
+	}
+	return nil
+}
+
+type GrantResponse struct {
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *GrantResponse) Reset()         { *m = GrantResponse{} }
+func (m *GrantResponse) String() string { return proto.CompactTextString(m) }
+func (*GrantResponse) ProtoMessage()    {}
+func (*GrantResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_21300bfacc51fc2a, []int{6}
+}
+
+func (m *GrantResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_GrantResponse.Unmarshal(m, b)
+}
+func (m *GrantResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_GrantResponse.Marshal(b, m, deterministic)
+}
+func (m *GrantResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GrantResponse.Merge(m, src)
+}
+func (m *GrantResponse) XXX_Size() int {
+	return xxx_messageInfo_GrantResponse.Size(m)
+}
+func (m *GrantResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_GrantResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GrantResponse proto.InternalMessageInfo
+
 type VerifyRequest struct {
-	Token                string   `protobuf:"bytes,1,opt,name=token,proto3" json:"token,omitempty"`
+	Account              *Account  `protobuf:"bytes,1,opt,name=account,proto3" json:"account,omitempty"`
+	Resource             *Resource `protobuf:"bytes,2,opt,name=resource,proto3" json:"resource,omitempty"`
 	XXX_NoUnkeyedLiteral struct{}  `json:"-"`
 	XXX_unrecognized     []byte    `json:"-"`
 	XXX_sizecache        int32     `json:"-"`
@@ -282,7 +417,7 @@ func (m *VerifyRequest) Reset()         { *m = VerifyRequest{} }
 func (m *VerifyRequest) String() string { return proto.CompactTextString(m) }
 func (*VerifyRequest) ProtoMessage()    {}
 func (*VerifyRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_de609d4872dacc78, []int{5}
+	return fileDescriptor_21300bfacc51fc2a, []int{7}
 }
 
 func (m *VerifyRequest) XXX_Unmarshal(b []byte) error {
@@ -303,15 +438,21 @@ func (m *VerifyRequest) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_VerifyRequest proto.InternalMessageInfo
 
-func (m *VerifyRequest) GetToken() string {
+func (m *VerifyRequest) GetAccount() *Account {
 	if m != nil {
-		return m.Token
+		return m.Account
 	}
-	return ""
+	return nil
+}
+
+func (m *VerifyRequest) GetResource() *Resource {
+	if m != nil {
+		return m.Resource
+	}
+	return nil
 }
 
 type VerifyResponse struct {
-	Account              *Account `protobuf:"bytes,1,opt,name=account,proto3" json:"account,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`
@@ -321,7 +462,7 @@ func (m *VerifyResponse) Reset()         { *m = VerifyResponse{} }
 func (m *VerifyResponse) String() string { return proto.CompactTextString(m) }
 func (*VerifyResponse) ProtoMessage()    {}
 func (*VerifyResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_de609d4872dacc78, []int{6}
+	return fileDescriptor_21300bfacc51fc2a, []int{8}
 }
 
 func (m *VerifyResponse) XXX_Unmarshal(b []byte) error {
@@ -342,15 +483,9 @@ func (m *VerifyResponse) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_VerifyResponse proto.InternalMessageInfo
 
-func (m *VerifyResponse) GetAccount() *Account {
-	if m != nil {
-		return m.Account
-	}
-	return nil
-}
-
 type RevokeRequest struct {
-	Token                string   `protobuf:"bytes,1,opt,name=token,proto3" json:"token,omitempty"`
+	Role                 string    `protobuf:"bytes,1,opt,name=role,proto3" json:"role,omitempty"`
+	Resource             *Resource `protobuf:"bytes,2,opt,name=resource,proto3" json:"resource,omitempty"`
 	XXX_NoUnkeyedLiteral struct{}  `json:"-"`
 	XXX_unrecognized     []byte    `json:"-"`
 	XXX_sizecache        int32     `json:"-"`
@@ -360,7 +495,7 @@ func (m *RevokeRequest) Reset()         { *m = RevokeRequest{} }
 func (m *RevokeRequest) String() string { return proto.CompactTextString(m) }
 func (*RevokeRequest) ProtoMessage()    {}
 func (*RevokeRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_de609d4872dacc78, []int{7}
+	return fileDescriptor_21300bfacc51fc2a, []int{9}
 }
 
 func (m *RevokeRequest) XXX_Unmarshal(b []byte) error {
@@ -381,13 +516,20 @@ func (m *RevokeRequest) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_RevokeRequest proto.InternalMessageInfo
 
-func (m *RevokeRequest) GetToken() string {
+func (m *RevokeRequest) GetRole() string {
 	if m != nil {
-		return m.Token
+		return m.Role
 	}
 	return ""
 }
 
+func (m *RevokeRequest) GetResource() *Resource {
+	if m != nil {
+		return m.Resource
+	}
+	return nil
+}
+
 type RevokeResponse struct {
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
@@ -398,7 +540,7 @@ func (m *RevokeResponse) Reset()         { *m = RevokeResponse{} }
 func (m *RevokeResponse) String() string { return proto.CompactTextString(m) }
 func (*RevokeResponse) ProtoMessage()    {}
 func (*RevokeResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_de609d4872dacc78, []int{8}
+	return fileDescriptor_21300bfacc51fc2a, []int{10}
 }
 
 func (m *RevokeResponse) XXX_Unmarshal(b []byte) error {
@@ -419,50 +561,235 @@ func (m *RevokeResponse) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_RevokeResponse proto.InternalMessageInfo
 
+type InspectRequest struct {
+	Token                string   `protobuf:"bytes,1,opt,name=token,proto3" json:"token,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *InspectRequest) Reset()         { *m = InspectRequest{} }
+func (m *InspectRequest) String() string { return proto.CompactTextString(m) }
+func (*InspectRequest) ProtoMessage()    {}
+func (*InspectRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_21300bfacc51fc2a, []int{11}
+}
+
+func (m *InspectRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_InspectRequest.Unmarshal(m, b)
+}
+func (m *InspectRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_InspectRequest.Marshal(b, m, deterministic)
+}
+func (m *InspectRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_InspectRequest.Merge(m, src)
+}
+func (m *InspectRequest) XXX_Size() int {
+	return xxx_messageInfo_InspectRequest.Size(m)
+}
+func (m *InspectRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_InspectRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_InspectRequest proto.InternalMessageInfo
+
+func (m *InspectRequest) GetToken() string {
+	if m != nil {
+		return m.Token
+	}
+	return ""
+}
+
+type InspectResponse struct {
+	Account              *Account `protobuf:"bytes,1,opt,name=account,proto3" json:"account,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *InspectResponse) Reset()         { *m = InspectResponse{} }
+func (m *InspectResponse) String() string { return proto.CompactTextString(m) }
+func (*InspectResponse) ProtoMessage()    {}
+func (*InspectResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_21300bfacc51fc2a, []int{12}
+}
+
+func (m *InspectResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_InspectResponse.Unmarshal(m, b)
+}
+func (m *InspectResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_InspectResponse.Marshal(b, m, deterministic)
+}
+func (m *InspectResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_InspectResponse.Merge(m, src)
+}
+func (m *InspectResponse) XXX_Size() int {
+	return xxx_messageInfo_InspectResponse.Size(m)
+}
+func (m *InspectResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_InspectResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_InspectResponse proto.InternalMessageInfo
+
+func (m *InspectResponse) GetAccount() *Account {
+	if m != nil {
+		return m.Account
+	}
+	return nil
+}
+
+type RefreshRequest struct {
+	Secret               string   `protobuf:"bytes,1,opt,name=secret,proto3" json:"secret,omitempty"`
+	TokenExpiry          int64    `protobuf:"varint,2,opt,name=token_expiry,json=tokenExpiry,proto3" json:"token_expiry,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *RefreshRequest) Reset()         { *m = RefreshRequest{} }
+func (m *RefreshRequest) String() string { return proto.CompactTextString(m) }
+func (*RefreshRequest) ProtoMessage()    {}
+func (*RefreshRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_21300bfacc51fc2a, []int{13}
+}
+
+func (m *RefreshRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_RefreshRequest.Unmarshal(m, b)
+}
+func (m *RefreshRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_RefreshRequest.Marshal(b, m, deterministic)
+}
+func (m *RefreshRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_RefreshRequest.Merge(m, src)
+}
+func (m *RefreshRequest) XXX_Size() int {
+	return xxx_messageInfo_RefreshRequest.Size(m)
+}
+func (m *RefreshRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_RefreshRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_RefreshRequest proto.InternalMessageInfo
+
+func (m *RefreshRequest) GetSecret() string {
+	if m != nil {
+		return m.Secret
+	}
+	return ""
+}
+
+func (m *RefreshRequest) GetTokenExpiry() int64 {
+	if m != nil {
+		return m.TokenExpiry
+	}
+	return 0
+}
+
+type RefreshResponse struct {
+	Token                *Token   `protobuf:"bytes,1,opt,name=token,proto3" json:"token,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *RefreshResponse) Reset()         { *m = RefreshResponse{} }
+func (m *RefreshResponse) String() string { return proto.CompactTextString(m) }
+func (*RefreshResponse) ProtoMessage()    {}
+func (*RefreshResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_21300bfacc51fc2a, []int{14}
+}
+
+func (m *RefreshResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_RefreshResponse.Unmarshal(m, b)
+}
+func (m *RefreshResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_RefreshResponse.Marshal(b, m, deterministic)
+}
+func (m *RefreshResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_RefreshResponse.Merge(m, src)
+}
+func (m *RefreshResponse) XXX_Size() int {
+	return xxx_messageInfo_RefreshResponse.Size(m)
+}
+func (m *RefreshResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_RefreshResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_RefreshResponse proto.InternalMessageInfo
+
+func (m *RefreshResponse) GetToken() *Token {
+	if m != nil {
+		return m.Token
+	}
+	return nil
+}
+
 func init() {
+	proto.RegisterType((*Token)(nil), "go.micro.auth.Token")
+	proto.RegisterMapType((map[string]string)(nil), "go.micro.auth.Token.MetadataEntry")
 	proto.RegisterType((*Account)(nil), "go.micro.auth.Account")
 	proto.RegisterMapType((map[string]string)(nil), "go.micro.auth.Account.MetadataEntry")
-	proto.RegisterType((*Role)(nil), "go.micro.auth.Role")
 	proto.RegisterType((*Resource)(nil), "go.micro.auth.Resource")
 	proto.RegisterType((*GenerateRequest)(nil), "go.micro.auth.GenerateRequest")
+	proto.RegisterMapType((map[string]string)(nil), "go.micro.auth.GenerateRequest.MetadataEntry")
 	proto.RegisterType((*GenerateResponse)(nil), "go.micro.auth.GenerateResponse")
+	proto.RegisterType((*GrantRequest)(nil), "go.micro.auth.GrantRequest")
+	proto.RegisterType((*GrantResponse)(nil), "go.micro.auth.GrantResponse")
 	proto.RegisterType((*VerifyRequest)(nil), "go.micro.auth.VerifyRequest")
 	proto.RegisterType((*VerifyResponse)(nil), "go.micro.auth.VerifyResponse")
 	proto.RegisterType((*RevokeRequest)(nil), "go.micro.auth.RevokeRequest")
 	proto.RegisterType((*RevokeResponse)(nil), "go.micro.auth.RevokeResponse")
+	proto.RegisterType((*InspectRequest)(nil), "go.micro.auth.InspectRequest")
+	proto.RegisterType((*InspectResponse)(nil), "go.micro.auth.InspectResponse")
+	proto.RegisterType((*RefreshRequest)(nil), "go.micro.auth.RefreshRequest")
+	proto.RegisterType((*RefreshResponse)(nil), "go.micro.auth.RefreshResponse")
 }
 
-func init() {
+func init() { proto.RegisterFile("auth/service/proto/auth.proto", fileDescriptor_21300bfacc51fc2a) }
-	proto.RegisterFile("micro/go-micro/auth/service/proto/auth.proto", fileDescriptor_de609d4872dacc78)
-}
 
-var fileDescriptor_de609d4872dacc78 = []byte{
+var fileDescriptor_21300bfacc51fc2a = []byte{
-	// 432 bytes of a gzipped FileDescriptorProto
+	// 663 bytes of a gzipped FileDescriptorProto
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-	0x94, 0x5c, 0x5d, 0xc8, 0x97, 0x36, 0x10, 0xa5, 0xbe, 0x5c, 0x15, 0xa4, 0xf6, 0x69, 0x42, 0xab,
+	0x99, 0x39, 0x73, 0xe2, 0xc0, 0xb6, 0x9f, 0xb1, 0x8b, 0xfd, 0x14, 0xe9, 0x2c, 0x0c, 0x70, 0x3f,
-	0x5c, 0x49, 0x6d, 0x4b, 0x91, 0x09, 0x71, 0x72, 0x21, 0x23, 0x83, 0x8b, 0xea, 0x22, 0xfb, 0xe9,
+	0xa1, 0x31, 0x8b, 0xf7, 0xf9, 0x95, 0x2b, 0x8e, 0xc4, 0xfc, 0x18, 0xbb, 0xd3, 0x30, 0xa0, 0xb1,
-	0xc3, 0xf0, 0x34, 0x49, 0x64, 0x99, 0x69, 0x9c, 0x82, 0x9f, 0xae, 0x43, 0x6f, 0xe1, 0x2d, 0xef,
+	0xcb, 0x2f, 0x9d, 0xaf, 0x3a, 0x34, 0xdf, 0xc4, 0x13, 0x8c, 0xc8, 0x26, 0x34, 0x19, 0x3f, 0x58,
-	0x70, 0x3f, 0x5d, 0xe3, 0x7d, 0xe8, 0x6b, 0xb9, 0xa1, 0x2c, 0xf4, 0x4d, 0xc9, 0x26, 0x18, 0xc2,
+	0xda, 0x50, 0xdb, 0x5d, 0xf7, 0xf2, 0x80, 0x10, 0x68, 0xb0, 0x79, 0x82, 0x96, 0x2e, 0x2e, 0xc5,
-	0x30, 0x51, 0x24, 0x34, 0xad, 0xc3, 0xde, 0xc2, 0x5b, 0xf6, 0xb8, 0x4b, 0xf1, 0x18, 0x06, 0xf4,
+	0x99, 0x58, 0xd0, 0x0e, 0x28, 0xfa, 0x0c, 0xc7, 0x96, 0x31, 0xd4, 0x76, 0x0d, 0x4f, 0x85, 0x64,
-	0x23, 0x4f, 0x55, 0x15, 0x06, 0xa6, 0xd1, 0x64, 0xf8, 0x1c, 0xfa, 0x4a, 0x6e, 0xa9, 0x08, 0xfb,
+	0x0b, 0x5a, 0xf8, 0x25, 0x09, 0xe9, 0xdc, 0x6a, 0x88, 0x84, 0x8c, 0xf8, 0x8b, 0x34, 0x3b, 0xfb,
-	0x8b, 0xde, 0x72, 0x1c, 0xdf, 0x8b, 0x5a, 0x12, 0x22, 0x2e, 0xb7, 0xc4, 0x2d, 0x02, 0xdf, 0xc1,
+	0x84, 0x01, 0xb3, 0x9a, 0x02, 0x48, 0x85, 0x9c, 0x95, 0xc6, 0x97, 0x98, 0x5a, 0xad, 0xa1, 0xc1,
-	0x68, 0x47, 0x5a, 0xac, 0x85, 0x16, 0xe1, 0xc0, 0xa0, 0x9f, 0x76, 0xd0, 0x8d, 0xd8, 0xe8, 0xbc,
+	0x59, 0x45, 0x40, 0x9e, 0x40, 0x67, 0x8a, 0xcc, 0x1f, 0xfb, 0xcc, 0xb7, 0xda, 0x43, 0x63, 0xb7,
-	0x81, 0x7d, 0xca, 0xb4, 0xaa, 0xf8, 0x61, 0x6a, 0xfe, 0x16, 0x26, 0xad, 0x16, 0xce, 0xa0, 0xb7,
+	0x3b, 0x72, 0xdc, 0x4a, 0xdf, 0xae, 0xe8, 0xd9, 0x3d, 0x95, 0x45, 0xc7, 0x11, 0xa3, 0x73, 0xaf,
-	0xa1, 0xaa, 0xb1, 0x55, 0x87, 0xb5, 0xaf, 0xbd, 0xd8, 0x96, 0xe4, 0x7c, 0x99, 0xe4, 0x8d, 0xff,
+	0x78, 0x63, 0x3f, 0x02, 0xb3, 0x92, 0x22, 0x03, 0x30, 0x26, 0x38, 0x97, 0xa3, 0xf1, 0x23, 0x27,
-	0xda, 0x63, 0x9f, 0x21, 0xa8, 0xd5, 0x20, 0x42, 0x90, 0x89, 0x1d, 0x35, 0x43, 0x26, 0xc6, 0x13,
+	0x9e, 0xf9, 0x97, 0x99, 0x9a, 0x2c, 0x0f, 0x1e, 0xea, 0x0f, 0x34, 0xe7, 0xbb, 0x06, 0xed, 0xc3,
-	0x18, 0x29, 0x2a, 0x64, 0xa9, 0x12, 0x3b, 0x38, 0x8e, 0x1f, 0x74, 0x8d, 0x34, 0x6d, 0x7e, 0x00,
+	0x20, 0x88, 0xb3, 0x88, 0x91, 0x1e, 0xe8, 0xe1, 0x58, 0x3e, 0xd3, 0xc3, 0x31, 0xd9, 0x83, 0x56,
-	0xb2, 0x18, 0x46, 0xae, 0x7a, 0x23, 0x29, 0x42, 0xa0, 0xab, 0xdc, 0x29, 0x31, 0x31, 0xfb, 0x00,
+	0x8a, 0x01, 0x45, 0x26, 0x9e, 0x75, 0x47, 0x9b, 0xcb, 0xda, 0xf2, 0x64, 0xcd, 0xd5, 0x70, 0x46,
-	0x77, 0xcf, 0x28, 0x23, 0x25, 0x34, 0x71, 0xfa, 0x5e, 0x52, 0xa1, 0xf1, 0x15, 0x0c, 0x85, 0xf5,
+	0x79, 0xb8, 0xa7, 0xa5, 0xe1, 0x1a, 0x62, 0xb8, 0x3b, 0x35, 0x14, 0xc9, 0xfe, 0x6f, 0xc6, 0x7b,
-	0x6d, 0xa6, 0xc7, 0xf1, 0xf1, 0xcd, 0x57, 0xe1, 0x0e, 0xc6, 0x3e, 0xc2, 0xec, 0x0f, 0x49, 0x91,
+	0x0d, 0x1d, 0x0f, 0xd3, 0x38, 0xa3, 0x01, 0xf2, 0xed, 0x46, 0xfe, 0x14, 0xe5, 0x43, 0x71, 0x5e,
-	0xcb, 0xac, 0xa0, 0x7f, 0x60, 0x79, 0x06, 0x93, 0x2f, 0xa4, 0xd2, 0x6f, 0x95, 0x13, 0x72, 0x78,
+	0xba, 0x71, 0x1b, 0x3a, 0x18, 0x8d, 0x93, 0x38, 0x8c, 0x98, 0x58, 0xf9, 0xba, 0x57, 0xc4, 0xce,
-	0x12, 0xde, 0x95, 0x27, 0xc1, 0xde, 0xc3, 0xd4, 0xc1, 0xfe, 0x67, 0x15, 0xa7, 0xbd, 0xdc, 0xd0,
+	0x0f, 0x0d, 0xfa, 0x27, 0x18, 0x21, 0xf5, 0x19, 0x7a, 0xf8, 0x39, 0xc3, 0x74, 0x51, 0xb6, 0x42,
-	0xdf, 0x57, 0xcd, 0x60, 0xea, 0x60, 0x76, 0x55, 0xfc, 0xcb, 0x83, 0xe0, 0xb4, 0xd4, 0x97, 0x78,
+	0x08, 0xbd, 0x2c, 0xc4, 0xf3, 0x92, 0x10, 0x86, 0x10, 0x62, 0xaf, 0x26, 0x44, 0x0d, 0x77, 0x95,
-	0x0e, 0x23, 0x67, 0x19, 0x1f, 0x77, 0xd6, 0x75, 0x0e, 0x3a, 0x7f, 0x72, 0x6b, 0xdf, 0xb2, 0xb2,
+	0x20, 0xe4, 0x36, 0x98, 0xb9, 0xe4, 0x1f, 0x2a, 0xf6, 0xdb, 0xc8, 0x2f, 0x8f, 0xc5, 0xdd, 0x9f,
-	0x23, 0x3c, 0x83, 0x81, 0x35, 0x85, 0x0f, 0x3b, 0xe0, 0xd6, 0x49, 0xe6, 0x8f, 0x6e, 0xe9, 0x5e,
+	0xa9, 0x76, 0x04, 0x83, 0xab, 0x66, 0xd2, 0x24, 0x8e, 0x52, 0x24, 0xf7, 0xa1, 0xed, 0xe7, 0x9b,
-	0x25, 0xb2, 0x92, 0xaf, 0x11, 0xb5, 0x0c, 0x5f, 0x23, 0x6a, 0xfb, 0x64, 0x47, 0x5f, 0x07, 0xe6,
+	0x12, 0x18, 0xdd, 0xd1, 0xd6, 0xf2, 0x3d, 0x7a, 0xaa, 0xcc, 0x79, 0x07, 0x1b, 0x27, 0xd4, 0x8f,
-	0x07, 0x9f, 0xfc, 0x0e, 0x00, 0x00, 0xff, 0xff, 0xf0, 0x34, 0xce, 0x17, 0xf1, 0x03, 0x00, 0x00,
+	0x98, 0xd2, 0x89, 0x40, 0x83, 0x4b, 0xa1, 0xf4, 0xe7, 0x67, 0x72, 0x00, 0x1d, 0x2a, 0xf7, 0x23,
+	0x4d, 0xf6, 0x5f, 0x0d, 0x56, 0xad, 0xcf, 0x2b, 0x0a, 0x9d, 0x3e, 0x98, 0x12, 0x38, 0xef, 0xcd,
+	0x99, 0x81, 0xf9, 0x16, 0x69, 0x78, 0x3e, 0x57, 0x54, 0xbf, 0xdd, 0xec, 0xf5, 0x1a, 0x19, 0x40,
+	0x4f, 0xf1, 0xca, 0x4e, 0xde, 0x83, 0xe9, 0xe1, 0x2c, 0x9e, 0xe0, 0x5f, 0x1f, 0x7a, 0x00, 0x3d,
+	0x85, 0x2c, 0xb9, 0xee, 0x42, 0xef, 0x45, 0x94, 0x26, 0x18, 0x14, 0x0a, 0x2f, 0xfd, 0xaa, 0x39,
+	0xcf, 0xa0, 0x5f, 0xd4, 0x5d, 0x7b, 0x99, 0xaf, 0x38, 0xfd, 0x39, 0xc5, 0xf4, 0x42, 0x91, 0x6d,
+	0x15, 0x5f, 0x87, 0x9c, 0x4d, 0x7d, 0x07, 0x6e, 0xc1, 0x86, 0xe0, 0x55, 0xee, 0xd4, 0x85, 0x3b,
+	0xbb, 0xe2, 0x2e, 0x37, 0xa7, 0xf3, 0x18, 0xfa, 0x05, 0x98, 0xec, 0xe8, 0x5e, 0xb9, 0xf5, 0x55,
+	0x9f, 0x9a, 0xbc, 0x64, 0xf4, 0xcd, 0x80, 0xc6, 0x61, 0xc6, 0x2e, 0xc8, 0x29, 0x74, 0x94, 0x4f,
+	0xc9, 0xce, 0xaf, 0x7f, 0x4d, 0xf6, 0xcd, 0x95, 0x79, 0x29, 0xe7, 0x1a, 0x39, 0x82, 0xa6, 0xf0,
+	0x15, 0xf9, 0xbf, 0x5e, 0x5b, 0xb2, 0xb1, 0x7d, 0x63, 0x79, 0xb2, 0x40, 0x39, 0x81, 0x56, 0x6e,
+	0x0a, 0x52, 0xaf, 0xac, 0x78, 0xd4, 0xde, 0x5e, 0x91, 0x2d, 0x03, 0xe5, 0x1b, 0x5f, 0x00, 0xaa,
+	0x58, 0x6c, 0x01, 0xa8, 0x66, 0x93, 0x35, 0xf2, 0x12, 0xda, 0xd2, 0x00, 0xa4, 0x5e, 0x5b, 0x35,
+	0x90, 0xbd, 0xb3, 0x2a, 0x5d, 0xc6, 0x92, 0xab, 0x23, 0x8b, 0xbc, 0x65, 0x7f, 0x2c, 0x60, 0xd5,
+	0x36, 0xee, 0xac, 0x9d, 0xb5, 0xc4, 0x9f, 0xf4, 0xc1, 0xcf, 0x00, 0x00, 0x00, 0xff, 0xff, 0xb7,
+	0xf8, 0x55, 0xb6, 0xc5, 0x07, 0x00, 0x00,
 }

auth/service/proto/auth.pb.micro.go

@@ -1,5 +1,5 @@
 // Code generated by protoc-gen-micro. DO NOT EDIT.
-// source: micro/go-micro/auth/service/proto/auth.proto
+// source: auth/service/proto/auth.proto
 
 package go_micro_auth
 
@@ -35,8 +35,11 @@ var _ server.Option
 
 type AuthService interface {
 	Generate(ctx context.Context, in *GenerateRequest, opts ...client.CallOption) (*GenerateResponse, error)
+	Grant(ctx context.Context, in *GrantRequest, opts ...client.CallOption) (*GrantResponse, error)
 	Verify(ctx context.Context, in *VerifyRequest, opts ...client.CallOption) (*VerifyResponse, error)
 	Revoke(ctx context.Context, in *RevokeRequest, opts ...client.CallOption) (*RevokeResponse, error)
+	Inspect(ctx context.Context, in *InspectRequest, opts ...client.CallOption) (*InspectResponse, error)
+	Refresh(ctx context.Context, in *RefreshRequest, opts ...client.CallOption) (*RefreshResponse, error)
 }
 
 type authService struct {
@@ -61,6 +64,16 @@ func (c *authService) Generate(ctx context.Context, in *GenerateRequest, opts ..
 	return out, nil
 }
 
+func (c *authService) Grant(ctx context.Context, in *GrantRequest, opts ...client.CallOption) (*GrantResponse, error) {
+	req := c.c.NewRequest(c.name, "Auth.Grant", in)
+	out := new(GrantResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *authService) Verify(ctx context.Context, in *VerifyRequest, opts ...client.CallOption) (*VerifyResponse, error) {
 	req := c.c.NewRequest(c.name, "Auth.Verify", in)
 	out := new(VerifyResponse)
@@ -81,19 +94,45 @@ func (c *authService) Revoke(ctx context.Context, in *RevokeRequest, opts ...cli
 	return out, nil
 }
 
+func (c *authService) Inspect(ctx context.Context, in *InspectRequest, opts ...client.CallOption) (*InspectResponse, error) {
+	req := c.c.NewRequest(c.name, "Auth.Inspect", in)
+	out := new(InspectResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *authService) Refresh(ctx context.Context, in *RefreshRequest, opts ...client.CallOption) (*RefreshResponse, error) {
+	req := c.c.NewRequest(c.name, "Auth.Refresh", in)
+	out := new(RefreshResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // Server API for Auth service
 
 type AuthHandler interface {
 	Generate(context.Context, *GenerateRequest, *GenerateResponse) error
+	Grant(context.Context, *GrantRequest, *GrantResponse) error
 	Verify(context.Context, *VerifyRequest, *VerifyResponse) error
 	Revoke(context.Context, *RevokeRequest, *RevokeResponse) error
+	Inspect(context.Context, *InspectRequest, *InspectResponse) error
+	Refresh(context.Context, *RefreshRequest, *RefreshResponse) error
 }
 
 func RegisterAuthHandler(s server.Server, hdlr AuthHandler, opts ...server.HandlerOption) error {
 	type auth interface {
 		Generate(ctx context.Context, in *GenerateRequest, out *GenerateResponse) error
+		Grant(ctx context.Context, in *GrantRequest, out *GrantResponse) error
 		Verify(ctx context.Context, in *VerifyRequest, out *VerifyResponse) error
 		Revoke(ctx context.Context, in *RevokeRequest, out *RevokeResponse) error
+		Inspect(ctx context.Context, in *InspectRequest, out *InspectResponse) error
+		Refresh(ctx context.Context, in *RefreshRequest, out *RefreshResponse) error
 	}
 	type Auth struct {
 		auth
@@ -110,6 +149,10 @@ func (h *authHandler) Generate(ctx context.Context, in *GenerateRequest, out *Ge
 	return h.AuthHandler.Generate(ctx, in, out)
 }
 
+func (h *authHandler) Grant(ctx context.Context, in *GrantRequest, out *GrantResponse) error {
+	return h.AuthHandler.Grant(ctx, in, out)
+}
+
 func (h *authHandler) Verify(ctx context.Context, in *VerifyRequest, out *VerifyResponse) error {
 	return h.AuthHandler.Verify(ctx, in, out)
 }
@@ -117,3 +160,11 @@ func (h *authHandler) Verify(ctx context.Context, in *VerifyRequest, out *Verify
 func (h *authHandler) Revoke(ctx context.Context, in *RevokeRequest, out *RevokeResponse) error {
 	return h.AuthHandler.Revoke(ctx, in, out)
 }
+
+func (h *authHandler) Inspect(ctx context.Context, in *InspectRequest, out *InspectResponse) error {
+	return h.AuthHandler.Inspect(ctx, in, out)
+}
+
+func (h *authHandler) Refresh(ctx context.Context, in *RefreshRequest, out *RefreshResponse) error {
+	return h.AuthHandler.Refresh(ctx, in, out)
+}

auth/service/proto/auth.proto

@@ -4,47 +4,81 @@ package go.micro.auth;
 
 service Auth {
 	rpc Generate(GenerateRequest) returns (GenerateResponse) {};
+	rpc Grant(GrantRequest) returns (GrantResponse) {};
 	rpc Verify(VerifyRequest) returns (VerifyResponse) {};
 	rpc Revoke(RevokeRequest)  returns (RevokeResponse) {};
+	rpc Inspect(InspectRequest)  returns (InspectResponse) {};		
+	rpc Refresh(RefreshRequest)  returns (RefreshResponse) {};
 }
 
-message Account{
+message Token {
-	string id = 1;
+	string token = 1;
-	string token = 2;
+	string type = 2;
 	int64 created = 3;
 	int64 expiry = 4;
-	repeated Role roles = 5;
+	string subject = 5;
-	map<string, string> metadata = 6;
+	repeated string roles = 6;
+	map<string, string> metadata = 7;
 }
 
-message Role {
+message Account {
-	string name = 1;
+	string id = 1;
-	Resource resource = 2;
+	Token secret = 2;
+	repeated string roles = 3;
+	map<string, string> metadata = 4;
 }
 
 message Resource{
 	string name = 1;
 	string type = 2;
+	string endpoint = 3;
 }
 
 message GenerateRequest {
-	Account account = 1;
+	string id = 1;
+	repeated string roles = 2;
+	map<string, string> metadata = 3;
+	int64 secret_expiry = 4;
 }
 
 message GenerateResponse {
 	Account account = 1;
 }
 
-message VerifyRequest {
+message GrantRequest {
-	string token = 1;
+	string role = 1;
+	Resource resource = 2;
 }
 
-message VerifyResponse {
+message GrantResponse {}
+
+message VerifyRequest {
 	Account account = 1;
+	Resource resource = 2;
 }
 
+message VerifyResponse {}
+
 message RevokeRequest {
-	string token = 1;
+	string role = 1;
+	Resource resource = 2;
 }
 
 message RevokeResponse {}
+
+message InspectRequest {
+	string token = 1;
+}
+
+message InspectResponse {
+	Account account = 1;
+}
+
+message RefreshRequest {
+	string secret = 1;
+	int64 token_expiry = 2;
+}
+
+message RefreshResponse {
+	Token token = 1;
+}

auth/service/service.go

@@ -2,10 +2,13 @@ package service
 
 import (
 	"context"
+	"strings"
 	"time"
 
 	"github.com/micro/go-micro/v2/auth"
 	pb "github.com/micro/go-micro/v2/auth/service/proto"
+	"github.com/micro/go-micro/v2/auth/token"
+	"github.com/micro/go-micro/v2/auth/token/jwt"
 	"github.com/micro/go-micro/v2/client"
 )
 
@@ -20,13 +23,14 @@ func NewAuth(opts ...auth.Option) auth.Auth {
 type svc struct {
 	options auth.Options
 	auth    pb.AuthService
+	jwt     token.Provider
 }
 
 func (s *svc) String() string {
 	return "service"
 }
 
-func (s *svc) Init(opts ...auth.Option) error {
+func (s *svc) Init(opts ...auth.Option) {
 	for _, o := range opts {
 		o(&s.options)
 	}
@@ -34,99 +38,140 @@ func (s *svc) Init(opts ...auth.Option) error {
 	dc := client.DefaultClient
 	s.auth = pb.NewAuthService("go.micro.auth", dc)
 
-	return nil
+	// if we have a JWT public key passed as an option,
+	// we can decode tokens with the type "JWT" locally
+	// and not have to make an RPC call
+	if key := s.options.PublicKey; len(key) > 0 {
+		s.jwt = jwt.NewTokenProvider(token.WithPublicKey(key))
+	}
 }
 
 func (s *svc) Options() auth.Options {
 	return s.options
 }
 
-// Generate a new auth account
+// Generate a new account
 func (s *svc) Generate(id string, opts ...auth.GenerateOption) (*auth.Account, error) {
-	// construct the request
 	options := auth.NewGenerateOptions(opts...)
-	sa := &auth.Account{
+
+	rsp, err := s.auth.Generate(context.TODO(), &pb.GenerateRequest{
 		Id:           id,
 		Roles:        options.Roles,
 		Metadata:     options.Metadata,
-	}
+		SecretExpiry: int64(options.SecretExpiry.Seconds()),
-	req := &pb.GenerateRequest{Account: serializeAccount(sa)}
+	})
-
-	// execute the request
-	resp, err := s.auth.Generate(context.Background(), req)
 	if err != nil {
 		return nil, err
 	}
 
-	// format the response
+	return serializeAccount(rsp.Account), nil
-	return deserializeAccount(resp.Account), nil
 }
 
-// Revoke an authorization account
+// Grant access to a resource
-func (s *svc) Revoke(token string) error {
+func (s *svc) Grant(role string, res *auth.Resource) error {
-	// contruct the request
+	_, err := s.auth.Grant(context.TODO(), &pb.GrantRequest{
-	req := &pb.RevokeRequest{Token: token}
+		Role: role,
-
+		Resource: &pb.Resource{
-	// execute the request
+			Type:     res.Type,
-	_, err := s.auth.Revoke(context.Background(), req)
+			Name:     res.Name,
+			Endpoint: res.Endpoint,
+		},
+	})
 	return err
 }
 
-// Verify an account token
+// Revoke access to a resource
-func (s *svc) Verify(token string) (*auth.Account, error) {
+func (s *svc) Revoke(role string, res *auth.Resource) error {
-	resp, err := s.auth.Verify(context.Background(), &pb.VerifyRequest{Token: token})
+	_, err := s.auth.Revoke(context.TODO(), &pb.RevokeRequest{
+		Role: role,
+		Resource: &pb.Resource{
+			Type:     res.Type,
+			Name:     res.Name,
+			Endpoint: res.Endpoint,
+		},
+	})
+	return err
+}
+
+// Verify an account has access to a resource
+func (s *svc) Verify(acc *auth.Account, res *auth.Resource) error {
+	_, err := s.auth.Verify(context.TODO(), &pb.VerifyRequest{
+		Account: &pb.Account{
+			Id:    acc.ID,
+			Roles: acc.Roles,
+		},
+		Resource: &pb.Resource{
+			Type:     res.Type,
+			Name:     res.Name,
+			Endpoint: res.Endpoint,
+		},
+	})
+	return err
+}
+
+// Inspect a token
+func (s *svc) Inspect(token string) (*auth.Account, error) {
+	// try to decode JWT locally and fall back to srv if an error
+	// occurs, TODO: find a better way of determining if the token
+	// is a JWT, possibly update the interface to take an auth.Token
+	// and not just the string
+	if len(strings.Split(token, ".")) == 3 && s.jwt != nil {
+		if tok, err := s.jwt.Inspect(token); err == nil {
+			return &auth.Account{
+				ID:       tok.Subject,
+				Roles:    tok.Roles,
+				Metadata: tok.Metadata,
+			}, nil
+		}
+	}
+
+	rsp, err := s.auth.Inspect(context.TODO(), &pb.InspectRequest{
+		Token: token,
+	})
 	if err != nil {
 		return nil, err
 	}
 
-	return deserializeAccount(resp.Account), nil
+	return serializeAccount(rsp.Account), nil
 }
 
-func serializeAccount(sa *auth.Account) *pb.Account {
+// Refresh an account using a secret
-	roles := make([]*pb.Role, len(sa.Roles))
+func (s *svc) Refresh(secret string, opts ...auth.RefreshOption) (*auth.Token, error) {
-	for i, r := range sa.Roles {
+	options := auth.NewRefreshOptions(opts...)
-		roles[i] = &pb.Role{
+
-			Name: r.Name,
+	rsp, err := s.auth.Refresh(context.Background(), &pb.RefreshRequest{
+		Secret:      secret,
+		TokenExpiry: int64(options.TokenExpiry.Seconds()),
+	})
+	if err != nil {
+		return nil, err
 	}
 
-		if r.Resource != nil {
+	return serializeToken(rsp.Token), nil
-			roles[i].Resource = &pb.Resource{
+}
-				Name: r.Resource.Name,
-				Type: r.Resource.Type,
-			}
-		}
-	}
 
-	return &pb.Account{
+func serializeToken(t *pb.Token) *auth.Token {
-		Id:       sa.Id,
+	return &auth.Token{
-		Roles:    roles,
+		Token:    t.Token,
-		Metadata: sa.Metadata,
+		Type:     t.Type,
+		Created:  time.Unix(t.Created, 0),
+		Expiry:   time.Unix(t.Expiry, 0),
+		Subject:  t.Subject,
+		Roles:    t.Roles,
+		Metadata: t.Metadata,
 	}
 }
 
-func deserializeAccount(a *pb.Account) *auth.Account {
+func serializeAccount(a *pb.Account) *auth.Account {
-	// format the response
+	var secret *auth.Token
-	sa := &auth.Account{
+	if a.Secret != nil {
-		Id:       a.Id,
+		secret = serializeToken(a.Secret)
-		Token:    a.Token,
+	}
-		Created:  time.Unix(a.Created, 0),
+
-		Expiry:   time.Unix(a.Expiry, 0),
+	return &auth.Account{
+		ID:       a.Id,
+		Roles:    a.Roles,
 		Metadata: a.Metadata,
+		Secret:   secret,
 	}
-
-	sa.Roles = make([]*auth.Role, len(a.Roles))
-	for i, r := range a.Roles {
-		sa.Roles[i] = &auth.Role{
-			Name: r.Name,
-		}
-
-		if r.Resource != nil {
-			sa.Roles[i].Resource = &auth.Resource{
-				Name: r.Resource.Name,
-				Type: r.Resource.Type,
-			}
-		}
-	}
-
-	return sa
 }

auth/store/rules.go

@@ -0,0 +1,72 @@
+package store
+
+import (
+	"encoding/json"
+	"strings"
+
+	"github.com/micro/go-micro/v2/auth"
+	"github.com/micro/go-micro/v2/store"
+)
+
+// Rule is an access control rule
+type Rule struct {
+	Role     string         `json:"rule"`
+	Resource *auth.Resource `json:"resource"`
+}
+
+// Key to be used when written to the store
+func (r *Rule) Key() string {
+	comps := []string{r.Resource.Type, r.Resource.Name, r.Resource.Endpoint, r.Role}
+	return strings.Join(comps, "/")
+}
+
+// Bytes returns json encoded bytes
+func (r *Rule) Bytes() []byte {
+	bytes, _ := json.Marshal(r)
+	return bytes
+}
+
+// isValidRule returns a bool, indicating if a rule permits access to a
+// resource for a given account
+func isValidRule(rule Rule, acc *auth.Account, res *auth.Resource) bool {
+	if rule.Role == "*" {
+		return true
+	}
+
+	for _, role := range acc.Roles {
+		if rule.Role == role {
+			return true
+		}
+
+		// allow user.anything if role is user.*
+		if strings.HasSuffix(rule.Role, ".*") && strings.HasPrefix(rule.Role, role+".") {
+			return true
+		}
+	}
+
+	return false
+}
+
+// listRules gets all the rules from the store which have a key
+// prefix matching the filters
+func (s *Store) listRules(filters ...string) ([]Rule, error) {
+	// get the records from the store
+	prefix := strings.Join(filters, "/")
+	recs, err := s.opts.Store.Read(prefix, store.ReadPrefix())
+	if err != nil {
+		return nil, err
+	}
+
+	// unmarshal the records
+	rules := make([]Rule, 0, len(recs))
+	for _, rec := range recs {
+		var r Rule
+		if err := json.Unmarshal(rec.Value, &r); err != nil {
+			return nil, err
+		}
+		rules = append(rules, r)
+	}
+
+	// return the rules
+	return rules, nil
+}

auth/store/store.go

@@ -1,130 +1,159 @@
 package store
 
 import (
-	"bytes"
-	"encoding/gob"
-	"time"
-
-	"github.com/google/uuid"
 	"github.com/micro/go-micro/v2/auth"
-	"github.com/micro/go-micro/v2/errors"
+	"github.com/micro/go-micro/v2/auth/token"
+	"github.com/micro/go-micro/v2/auth/token/basic"
 	"github.com/micro/go-micro/v2/store"
+	memStore "github.com/micro/go-micro/v2/store/memory"
 )
 
-type Auth struct {
+// NewAuth returns a new default registry which is store
-	store store.Store
+func NewAuth(opts ...auth.Option) auth.Auth {
+	var s Store
+	s.Init(opts...)
+	return &s
+}
+
+// Store implementation of auth
+type Store struct {
+	secretProvider token.Provider
+	tokenProvider  token.Provider
 	opts           auth.Options
 }
 
-// NewAuth returns an instance of store auth
+// String returns store
-func NewAuth(opts ...auth.Option) auth.Auth {
+func (s *Store) String() string {
-	var options auth.Options
+	return "store"
+}
 
+// Init the auth
+func (s *Store) Init(opts ...auth.Option) {
 	for _, o := range opts {
-		o(&options)
+		o(&s.opts)
 	}
 
-	return &Auth{
+	// use the default store as a fallback
-		store: store.DefaultStore,
+	if s.opts.Store == nil {
-		opts:  options,
+		s.opts.Store = store.DefaultStore
+	}
+
+	// noop will not work for auth
+	if s.opts.Store.String() == "noop" {
+		s.opts.Store = memStore.NewStore()
+	}
+
+	if s.tokenProvider == nil {
+		s.tokenProvider = basic.NewTokenProvider(token.WithStore(s.opts.Store))
+	}
+	if s.secretProvider == nil {
+		s.secretProvider = basic.NewTokenProvider(token.WithStore(s.opts.Store))
 	}
 }
 
-// Init the auth package
+// Options returns the options
-func (a *Auth) Init(opts ...auth.Option) error {
+func (s *Store) Options() auth.Options {
-	for _, o := range opts {
+	return s.opts
-		o(&a.opts)
-	}
-	return nil
 }
 
-// Options returns the options set
+// Generate a new account
-func (a *Auth) Options() auth.Options {
+func (s *Store) Generate(id string, opts ...auth.GenerateOption) (*auth.Account, error) {
-	return a.opts
-}
-
-// Generate a new auth Account
-func (a *Auth) Generate(id string, opts ...auth.GenerateOption) (*auth.Account, error) {
-	// generate the token
-	token, err := uuid.NewUUID()
-	if err != nil {
-		return nil, err
-	}
-
 	// parse the options
 	options := auth.NewGenerateOptions(opts...)
 
-	// construct the account
+	// Generate a long-lived secret
-	sa := auth.Account{
+	secretOpts := []token.GenerateOption{
-		Id:       id,
+		token.WithExpiry(options.SecretExpiry),
-		Token:    token.String(),
+		token.WithMetadata(options.Metadata),
-		Created:  time.Now(),
+		token.WithRoles(options.Roles),
-		Metadata: options.Metadata,
-		Roles:    options.Roles,
 	}
-
+	secret, err := s.secretProvider.Generate(id, secretOpts...)
-	// encode the data to bytes
-	// TODO: replace with json
-	buf := &bytes.Buffer{}
-	e := gob.NewEncoder(buf)
-	if err := e.Encode(sa); err != nil {
-		return nil, err
-	}
-
-	// write to the store
-	err = a.store.Write(&store.Record{
-		Key:   token.String(),
-		Value: buf.Bytes(),
-	})
 	if err != nil {
 		return nil, err
 	}
 
-	// return the result
+	// return the account
-	return &sa, nil
+	return &auth.Account{
+		ID:       id,
+		Roles:    options.Roles,
+		Metadata: options.Metadata,
+		Secret:   secret,
+	}, nil
 }
 
-// Revoke an authorization Account
+// Grant access to a resource
-func (a *Auth) Revoke(token string) error {
+func (s *Store) Grant(role string, res *auth.Resource) error {
-	records, err := a.store.Read(token, store.ReadSuffix())
+	r := Rule{role, res}
+	return s.opts.Store.Write(&store.Record{Key: r.Key(), Value: r.Bytes()})
+}
+
+// Revoke access to a resource
+func (s *Store) Revoke(role string, res *auth.Resource) error {
+	r := Rule{role, res}
+
+	err := s.opts.Store.Delete(r.Key())
+	if err == store.ErrNotFound {
+		return auth.ErrNotFound
+	}
+
+	return err
+}
+
+// Verify an account has access to a resource
+func (s *Store) Verify(acc *auth.Account, res *auth.Resource) error {
+	queries := [][]string{
+		{res.Type, "*"},                         // check for wildcard resource type, e.g. service.*
+		{res.Type, res.Name, "*"},               // check for wildcard name, e.g. service.foo*
+		{res.Type, res.Name, res.Endpoint, "*"}, // check for wildcard endpoints, e.g. service.foo.ListFoo:*
+		{res.Type, res.Name, res.Endpoint},      // check for specific role, e.g. service.foo.ListFoo:admin
+	}
+
+	for _, q := range queries {
+		rules, err := s.listRules(q...)
 		if err != nil {
 			return err
 		}
-	if len(records) == 0 {
-		return errors.BadRequest("go.micro.auth", "token not found")
-	}
-
-	for _, r := range records {
-		if err := a.store.Delete(r.Key); err != nil {
-			return errors.InternalServerError("go.micro.auth", "error deleting from store")
-		}
-	}
 
+		for _, rule := range rules {
+			if isValidRule(rule, acc, res) {
 				return nil
-}
+			}
-
+		}
-// Verify an account token
-func (a *Auth) Verify(token string) (*auth.Account, error) {
-	// lookup the record by token
-	records, err := a.store.Read(token, store.ReadSuffix())
-	if err == store.ErrNotFound || len(records) == 0 {
-		return nil, errors.Unauthorized("go.micro.auth", "invalid token")
-	} else if err != nil {
-		return nil, errors.InternalServerError("go.micro.auth", "error reading store")
 	}
 
-	// decode the result
+	return auth.ErrForbidden
-	// TODO: replace with json
-	b := bytes.NewBuffer(records[0].Value)
-	decoder := gob.NewDecoder(b)
-	var sa auth.Account
-	err = decoder.Decode(&sa)
-
-	// return the result
-	return &sa, err
 }
 
-// String returns the implementation
+// Inspect a token
-func (a *Auth) String() string {
+func (s *Store) Inspect(t string) (*auth.Account, error) {
-	return "store"
+	tok, err := s.tokenProvider.Inspect(t)
+	if err == token.ErrInvalidToken || err == token.ErrNotFound {
+		return nil, auth.ErrInvalidToken
+	} else if err != nil {
+		return nil, err
+	}
+
+	return &auth.Account{
+		ID:       tok.Subject,
+		Roles:    tok.Roles,
+		Metadata: tok.Metadata,
+	}, nil
+}
+
+// Refresh an account using a secret
+func (s *Store) Refresh(secret string, opts ...auth.RefreshOption) (*auth.Token, error) {
+	sec, err := s.secretProvider.Inspect(secret)
+	if err == token.ErrInvalidToken || err == token.ErrNotFound {
+		return nil, auth.ErrInvalidToken
+	} else if err != nil {
+		return nil, err
+	}
+
+	options := auth.NewRefreshOptions(opts...)
+
+	return s.tokenProvider.Generate(sec.Subject,
+		token.WithExpiry(options.TokenExpiry),
+		token.WithMetadata(sec.Metadata),
+		token.WithRoles(sec.Roles),
+	)
 }

auth/store/store_test.go

@@ -0,0 +1,287 @@
+package store
+
+import (
+	"log"
+	"testing"
+
+	"github.com/micro/go-micro/v2/auth"
+	memStore "github.com/micro/go-micro/v2/store/memory"
+)
+
+func TestGenerate(t *testing.T) {
+	s := memStore.NewStore()
+	a := NewAuth(auth.Store(s))
+
+	id := "test"
+	roles := []string{"admin"}
+	metadata := map[string]string{"foo": "bar"}
+
+	opts := []auth.GenerateOption{
+		auth.WithRoles(roles),
+		auth.WithMetadata(metadata),
+	}
+
+	// generate the account
+	acc, err := a.Generate(id, opts...)
+	if err != nil {
+		t.Fatalf("Generate returned an error: %v, expected nil", err)
+	}
+	// validate the account attributes were set correctly
+	if acc.ID != id {
+		t.Errorf("Generate returned %v as the ID, expected %v", acc.ID, id)
+	}
+	if len(acc.Roles) != len(roles) {
+		t.Errorf("Generate returned %v as the roles, expected %v", acc.Roles, roles)
+	}
+	if len(acc.Metadata) != len(metadata) {
+		t.Errorf("Generate returned %v as the metadata, expected %v", acc.Metadata, metadata)
+	}
+
+	// validate the secret is valid
+	if _, err := a.Refresh(acc.Secret.Token); err != nil {
+		t.Errorf("Generate returned an invalid secret, error: %v", err)
+	}
+}
+
+func TestGrant(t *testing.T) {
+	s := memStore.NewStore()
+	a := NewAuth(auth.Store(s))
+
+	res := &auth.Resource{Type: "service", Name: "Test", Endpoint: "Foo.Bar"}
+	if err := a.Grant("users.*", res); err != nil {
+		t.Fatalf("Grant returned an error: %v, expected nil", err)
+	}
+
+	recs, err := s.List()
+	if err != nil {
+		t.Fatalf("Could not read from the store: %v", err)
+	}
+	if len(recs) != 1 {
+		t.Errorf("Expected Grant to write 1 record, actually wrote %v", len(recs))
+	}
+}
+
+func TestRevoke(t *testing.T) {
+	s := memStore.NewStore()
+	a := NewAuth(auth.Store(s))
+
+	res := &auth.Resource{Type: "service", Name: "Test", Endpoint: "Foo.Bar"}
+	if err := a.Grant("users.*", res); err != nil {
+		t.Fatalf("Grant returned an error: %v, expected nil", err)
+	}
+
+	recs, err := s.List()
+	if err != nil {
+		t.Fatalf("Could not read from the store: %v", err)
+	}
+	if len(recs) != 1 {
+		t.Fatalf("Expected Grant to write 1 record, actually wrote %v", len(recs))
+	}
+
+	if err := a.Revoke("users.*", res); err != nil {
+		t.Fatalf("Revoke returned an error: %v, expected nil", err)
+	}
+
+	recs, err = s.List()
+	if err != nil {
+		t.Fatalf("Could not read from the store: %v", err)
+	}
+	if len(recs) != 0 {
+		t.Fatalf("Expected Revoke to delete 1 record, actually deleted %v", 1-len(recs))
+	}
+}
+
+func TestInspect(t *testing.T) {
+	a := NewAuth()
+
+	t.Run("Valid Token", func(t *testing.T) {
+		id := "test"
+		roles := []string{"admin"}
+		metadata := map[string]string{"foo": "bar"}
+
+		opts := []auth.GenerateOption{
+			auth.WithRoles(roles),
+			auth.WithMetadata(metadata),
+		}
+
+		// generate and inspect the token
+		acc, err := a.Generate("test", opts...)
+		if err != nil {
+			log.Fatalf("Generate returned an error: %v, expected nil", err)
+		}
+		tok, err := a.Refresh(acc.Secret.Token)
+		if err != nil {
+			log.Fatalf("Refresh returned an error: %v, expected nil", err)
+		}
+		acc2, err := a.Inspect(tok.Token)
+		if err != nil {
+			log.Fatalf("Inspect returned an error: %v, expected nil", err)
+		}
+
+		// validate the account attributes were retrieved correctly
+		if acc2.ID != id {
+			t.Errorf("Generate returned %v as the ID, expected %v", acc.ID, id)
+		}
+		if len(acc2.Roles) != len(roles) {
+			t.Errorf("Generate returned %v as the roles, expected %v", acc.Roles, roles)
+		}
+		if len(acc2.Metadata) != len(metadata) {
+			t.Errorf("Generate returned %v as the metadata, expected %v", acc.Metadata, metadata)
+		}
+	})
+
+	t.Run("Invalid Token", func(t *testing.T) {
+		_, err := a.Inspect("invalid token")
+		if err != auth.ErrInvalidToken {
+			t.Errorf("Inspect returned %v error, expected %v", err, auth.ErrInvalidToken)
+		}
+	})
+}
+
+func TestRefresh(t *testing.T) {
+	a := NewAuth()
+
+	t.Run("Valid Secret", func(t *testing.T) {
+		roles := []string{"admin"}
+		metadata := map[string]string{"foo": "bar"}
+
+		opts := []auth.GenerateOption{
+			auth.WithRoles(roles),
+			auth.WithMetadata(metadata),
+		}
+
+		// generate the account
+		acc, err := a.Generate("test", opts...)
+		if err != nil {
+			log.Fatalf("Generate returned an error: %v, expected nil", err)
+		}
+
+		// refresh the token
+		tok, err := a.Refresh(acc.Secret.Token)
+		if err != nil {
+			log.Fatalf("Refresh returned an error: %v, expected nil", err)
+		}
+
+		// validate the account attributes were set correctly
+		if acc.ID != tok.Subject {
+			t.Errorf("Refresh returned %v as the ID, expected %v", acc.ID, tok.Subject)
+		}
+		if len(acc.Roles) != len(tok.Roles) {
+			t.Errorf("Refresh returned %v as the roles, expected %v", acc.Roles, tok.Subject)
+		}
+		if len(acc.Metadata) != len(tok.Metadata) {
+			t.Errorf("Refresh returned %v as the metadata, expected %v", acc.Metadata, tok.Metadata)
+		}
+	})
+
+	t.Run("Invalid Secret", func(t *testing.T) {
+		_, err := a.Refresh("invalid secret")
+		if err != auth.ErrInvalidToken {
+			t.Errorf("Inspect returned %v error, expected %v", err, auth.ErrInvalidToken)
+		}
+	})
+}
+
+func TestVerify(t *testing.T) {
+	testRules := []struct {
+		Role     string
+		Resource *auth.Resource
+	}{
+		{
+			Role:     "*",
+			Resource: &auth.Resource{Type: "service", Name: "go.micro.apps", Endpoint: "Apps.PublicList"},
+		},
+		{
+			Role:     "user.*",
+			Resource: &auth.Resource{Type: "service", Name: "go.micro.apps", Endpoint: "Apps.List"},
+		},
+		{
+			Role:     "user.developer",
+			Resource: &auth.Resource{Type: "service", Name: "go.micro.apps", Endpoint: "Apps.Update"},
+		},
+		{
+			Role:     "admin",
+			Resource: &auth.Resource{Type: "service", Name: "go.micro.apps", Endpoint: "Apps.Delete"},
+		},
+		{
+			Role:     "admin",
+			Resource: &auth.Resource{Type: "service", Name: "*", Endpoint: "*"},
+		},
+	}
+
+	a := NewAuth()
+	for _, r := range testRules {
+		if err := a.Grant(r.Role, r.Resource); err != nil {
+			t.Fatalf("Grant returned an error: %v, expected nil", err)
+		}
+	}
+
+	testTable := []struct {
+		Name     string
+		Roles    []string
+		Resource *auth.Resource
+		Error    error
+	}{
+		{
+			Name:     "An account with no roles accessing a public endpoint",
+			Resource: &auth.Resource{Type: "service", Name: "go.micro.apps", Endpoint: "Apps.PublicList"},
+		},
+		{
+			Name:     "An account with no roles accessing a private endpoint",
+			Resource: &auth.Resource{Type: "service", Name: "go.micro.apps", Endpoint: "Apps.Update"},
+			Error:    auth.ErrForbidden,
+		},
+		{
+			Name:     "An account with the user role accessing a user* endpoint",
+			Roles:    []string{"user"},
+			Resource: &auth.Resource{Type: "service", Name: "go.micro.apps", Endpoint: "Apps.List"},
+		},
+		{
+			Name:     "An account with the user role accessing a user.admin endpoint",
+			Roles:    []string{"user"},
+			Resource: &auth.Resource{Type: "service", Name: "go.micro.apps", Endpoint: "Apps.Delete"},
+			Error:    auth.ErrForbidden,
+		},
+		{
+			Name:     "An account with the developer role accessing a user.developer endpoint",
+			Roles:    []string{"user.developer"},
+			Resource: &auth.Resource{Type: "service", Name: "go.micro.apps", Endpoint: "Apps.Update"},
+		},
+		{
+			Name:     "An account with the developer role accessing an admin endpoint",
+			Roles:    []string{"user.developer"},
+			Resource: &auth.Resource{Type: "service", Name: "go.micro.apps", Endpoint: "Apps.Delete"},
+			Error:    auth.ErrForbidden,
+		},
+		{
+			Name:     "An admin account accessing an admin endpoint",
+			Roles:    []string{"admin"},
+			Resource: &auth.Resource{Type: "service", Name: "go.micro.apps", Endpoint: "Apps.Delete"},
+		},
+		{
+			Name:     "An admin account accessing a generic service endpoint",
+			Roles:    []string{"admin"},
+			Resource: &auth.Resource{Type: "service", Name: "go.micro.foo", Endpoint: "Foo.Bar"},
+		},
+		{
+			Name:     "An admin account accessing an unauthorised endpoint",
+			Roles:    []string{"admin"},
+			Resource: &auth.Resource{Type: "infra", Name: "go.micro.foo", Endpoint: "Foo.Bar"},
+			Error:    auth.ErrForbidden,
+		},
+		{
+			Name:     "A account with no roles accessing an unauthorised endpoint",
+			Resource: &auth.Resource{Type: "infra", Name: "go.micro.foo", Endpoint: "Foo.Bar"},
+			Error:    auth.ErrForbidden,
+		},
+	}
+
+	for _, tc := range testTable {
+		t.Run(tc.Name, func(t *testing.T) {
+			acc := &auth.Account{Roles: tc.Roles}
+			if err := a.Verify(acc, tc.Resource); err != tc.Error {
+				t.Errorf("Verify returned %v error, expected %v", err, tc.Error)
+			}
+		})
+	}
+}

auth/token/basic/basic.go

@@ -0,0 +1,95 @@
+package basic
+
+import (
+	"encoding/json"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/micro/go-micro/v2/auth"
+	"github.com/micro/go-micro/v2/auth/token"
+	"github.com/micro/go-micro/v2/store"
+)
+
+// Basic implementation of token provider, backed by the store
+type Basic struct {
+	store store.Store
+}
+
+// NewTokenProvider returns an initialized basic provider
+func NewTokenProvider(opts ...token.Option) token.Provider {
+	options := token.NewOptions(opts...)
+
+	if options.Store == nil {
+		options.Store = store.DefaultStore
+	}
+
+	return &Basic{
+		store: options.Store,
+	}
+}
+
+// Generate a token for an account
+func (b *Basic) Generate(subject string, opts ...token.GenerateOption) (*auth.Token, error) {
+	options := token.NewGenerateOptions(opts...)
+
+	// construct the token
+	token := auth.Token{
+		Subject:  subject,
+		Type:     b.String(),
+		Token:    uuid.New().String(),
+		Created:  time.Now(),
+		Expiry:   time.Now().Add(options.Expiry),
+		Metadata: options.Metadata,
+		Roles:    options.Roles,
+	}
+
+	// marshal the account to bytes
+	bytes, err := json.Marshal(token)
+	if err != nil {
+		return nil, err
+	}
+
+	// write to the store
+	err = b.store.Write(&store.Record{
+		Key:    token.Token,
+		Value:  bytes,
+		Expiry: options.Expiry,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	// return the token
+	return &token, nil
+}
+
+// Inspect a token
+func (b *Basic) Inspect(t string) (*auth.Token, error) {
+	// lookup the token in the store
+	recs, err := b.store.Read(t)
+	if err == store.ErrNotFound {
+		return nil, token.ErrInvalidToken
+	} else if err != nil {
+		return nil, err
+	}
+	bytes := recs[0].Value
+
+	// unmarshal the bytes
+	var tok *auth.Token
+	if err := json.Unmarshal(bytes, &tok); err != nil {
+		return nil, err
+	}
+
+	// ensure the token hasn't expired, the store should
+	// expire the token but we're checking again
+	if tok.Expiry.Unix() < time.Now().Unix() {
+		return nil, token.ErrInvalidToken
+	}
+
+	return tok, err
+}
+
+// String returns basic
+func (b *Basic) String() string {
+	return "basic"
+}

auth/token/basic/basic_test.go

@@ -0,0 +1,80 @@
+package basic
+
+import (
+	"testing"
+	"time"
+
+	"github.com/micro/go-micro/v2/auth/token"
+	"github.com/micro/go-micro/v2/store/memory"
+)
+
+func TestGenerate(t *testing.T) {
+	store := memory.NewStore()
+	b := NewTokenProvider(token.WithStore(store))
+
+	_, err := b.Generate("test")
+	if err != nil {
+		t.Fatalf("Generate returned %v error, expected nil", err)
+	}
+
+	recs, err := store.List()
+	if err != nil {
+		t.Fatalf("Unable to read from store: %v", err)
+	}
+	if len(recs) != 1 {
+		t.Errorf("Generate didn't write to the store, expected 1 record, got %v", len(recs))
+	}
+}
+
+func TestInspect(t *testing.T) {
+	store := memory.NewStore()
+	b := NewTokenProvider(token.WithStore(store))
+
+	t.Run("Valid token", func(t *testing.T) {
+		md := map[string]string{"foo": "bar"}
+		roles := []string{"admin"}
+		subject := "test"
+
+		opts := []token.GenerateOption{
+			token.WithMetadata(md),
+			token.WithRoles(roles),
+		}
+
+		tok, err := b.Generate(subject, opts...)
+		if err != nil {
+			t.Fatalf("Generate returned %v error, expected nil", err)
+		}
+
+		tok2, err := b.Inspect(tok.Token)
+		if err != nil {
+			t.Fatalf("Inspect returned %v error, expected nil", err)
+		}
+		if tok2.Subject != subject {
+			t.Errorf("Inspect returned %v as the token subject, expected %v", tok2.Subject, subject)
+		}
+		if len(tok2.Roles) != len(roles) {
+			t.Errorf("Inspect returned %v roles, expected %v", len(tok2.Roles), len(roles))
+		}
+		if len(tok2.Metadata) != len(md) {
+			t.Errorf("Inspect returned %v as the token metadata, expected %v", tok2.Metadata, md)
+		}
+	})
+
+	t.Run("Expired token", func(t *testing.T) {
+		tok, err := b.Generate("foo", token.WithExpiry(-10*time.Second))
+		if err != nil {
+			t.Fatalf("Generate returned %v error, expected nil", err)
+		}
+
+		if _, err = b.Inspect(tok.Token); err != token.ErrInvalidToken {
+			t.Fatalf("Inspect returned %v error, expected %v", err, token.ErrInvalidToken)
+		}
+	})
+
+	t.Run("Invalid token", func(t *testing.T) {
+		_, err := b.Inspect("Invalid token")
+		if err != token.ErrInvalidToken {
+			t.Fatalf("Inspect returned %v error, expected %v", err, token.ErrInvalidToken)
+		}
+	})
+}

auth/token/jwt/jwt.go

@@ -0,0 +1,111 @@
+package jwt
+
+import (
+	"encoding/base64"
+	"time"
+
+	"github.com/dgrijalva/jwt-go"
+	"github.com/micro/go-micro/v2/auth"
+	"github.com/micro/go-micro/v2/auth/token"
+)
+
+// authClaims to be encoded in the JWT
+type authClaims struct {
+	Roles    []string          `json:"roles"`
+	Metadata map[string]string `json:"metadata"`
+
+	jwt.StandardClaims
+}
+
+// JWT implementation of token provider
+type JWT struct {
+	opts token.Options
+}
+
+// NewTokenProvider returns an initialized basic provider
+func NewTokenProvider(opts ...token.Option) token.Provider {
+	return &JWT{
+		opts: token.NewOptions(opts...),
+	}
+}
+
+// Generate a new JWT
+func (j *JWT) Generate(subject string, opts ...token.GenerateOption) (*auth.Token, error) {
+	// decode the private key
+	priv, err := base64.StdEncoding.DecodeString(j.opts.PrivateKey)
+	if err != nil {
+		return nil, err
+	}
+
+	// parse the private key
+	key, err := jwt.ParseRSAPrivateKeyFromPEM(priv)
+	if err != nil {
+		return nil, token.ErrEncodingToken
+	}
+
+	// parse the options
+	options := token.NewGenerateOptions(opts...)
+
+	// generate the JWT
+	expiry := time.Now().Add(options.Expiry)
+	t := jwt.NewWithClaims(jwt.SigningMethodRS256, authClaims{
+		options.Roles, options.Metadata, jwt.StandardClaims{
+			Subject:   subject,
+			ExpiresAt: expiry.Unix(),
+		},
+	})
+	tok, err := t.SignedString(key)
+	if err != nil {
+		return nil, err
+	}
+
+	// return the token
+	return &auth.Token{
+		Subject:  subject,
+		Token:    tok,
+		Type:     j.String(),
+		Created:  time.Now(),
+		Expiry:   expiry,
+		Roles:    options.Roles,
+		Metadata: options.Metadata,
+	}, nil
+}
+
+// Inspect a JWT
+func (j *JWT) Inspect(t string) (*auth.Token, error) {
+	// decode the public key
+	pub, err := base64.StdEncoding.DecodeString(j.opts.PublicKey)
+	if err != nil {
+		return nil, err
+	}
+
+	// parse the public key
+	res, err := jwt.ParseWithClaims(t, &authClaims{}, func(token *jwt.Token) (interface{}, error) {
+		return jwt.ParseRSAPublicKeyFromPEM(pub)
+	})
+	if err != nil {
+		return nil, token.ErrInvalidToken
+	}
+
+	// validate the token
+	if !res.Valid {
+		return nil, token.ErrInvalidToken
+	}
+	claims, ok := res.Claims.(*authClaims)
+	if !ok {
+		return nil, token.ErrInvalidToken
+	}
+
+	// return the token
+	return &auth.Token{
+		Token:    t,
+		Subject:  claims.Subject,
+		Metadata: claims.Metadata,
+		Roles:    claims.Roles,
+	}, nil
+}
+
+// String returns JWT
+func (j *JWT) String() string {
+	return "jwt"
+}

auth/token/jwt/jwt_test.go

@@ -0,0 +1,90 @@
+package jwt
+
+import (
+	"io/ioutil"
+	"testing"
+	"time"
+
+	"github.com/micro/go-micro/v2/auth/token"
+)
+
+func TestGenerate(t *testing.T) {
+	privKey, err := ioutil.ReadFile("test/sample_key")
+	if err != nil {
+		t.Fatalf("Unable to read private key: %v", err)
+	}
+
+	j := NewTokenProvider(
+		token.WithPrivateKey(string(privKey)),
+	)
+
+	_, err = j.Generate("test")
+	if err != nil {
+		t.Fatalf("Generate returned %v error, expected nil", err)
+	}
+}
+
+func TestInspect(t *testing.T) {
+	pubKey, err := ioutil.ReadFile("test/sample_key.pub")
+	if err != nil {
+		t.Fatalf("Unable to read public key: %v", err)
+	}
+	privKey, err := ioutil.ReadFile("test/sample_key")
+	if err != nil {
+		t.Fatalf("Unable to read private key: %v", err)
+	}
+
+	j := NewTokenProvider(
+		token.WithPublicKey(string(pubKey)),
+		token.WithPrivateKey(string(privKey)),
+	)
+
+	t.Run("Valid token", func(t *testing.T) {
+		md := map[string]string{"foo": "bar"}
+		roles := []string{"admin"}
+		subject := "test"
+
+		opts := []token.GenerateOption{
+			token.WithMetadata(md),
+			token.WithRoles(roles),
+		}
+
+		tok, err := j.Generate(subject, opts...)
+		if err != nil {
+			t.Fatalf("Generate returned %v error, expected nil", err)
+		}
+
+		tok2, err := j.Inspect(tok.Token)
+		if err != nil {
+			t.Fatalf("Inspect returned %v error, expected nil", err)
+		}
+		if tok2.Subject != subject {
+			t.Errorf("Inspect returned %v as the token subject, expected %v", tok2.Subject, subject)
+		}
+		if len(tok2.Roles) != len(roles) {
+			t.Errorf("Inspect returned %v roles, expected %v", len(tok2.Roles), len(roles))
+		}
+		if len(tok2.Metadata) != len(md) {
+			t.Errorf("Inspect returned %v as the token metadata, expected %v", tok2.Metadata, md)
+		}
+	})
+
+	t.Run("Expired token", func(t *testing.T) {
+		tok, err := j.Generate("foo", token.WithExpiry(-10*time.Second))
+		if err != nil {
+			t.Fatalf("Generate returned %v error, expected nil", err)
+		}
+
+		if _, err = j.Inspect(tok.Token); err != token.ErrInvalidToken {
+			t.Fatalf("Inspect returned %v error, expected %v", err, token.ErrInvalidToken)
+		}
+	})
+
+	t.Run("Invalid token", func(t *testing.T) {
+		_, err := j.Inspect("Invalid token")
+		if err != token.ErrInvalidToken {
+			t.Fatalf("Inspect returned %v error, expected %v", err, token.ErrInvalidToken)
+		}
+	})
+
+}

auth/token/jwt/test/sample_key

@@ -0,0 +1 @@
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

auth/token/jwt/test/sample_key.pub

@@ -0,0 +1 @@
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

auth/token/options.go

@@ -0,0 +1,96 @@
+package token
+
+import (
+	"time"
+
+	"github.com/micro/go-micro/v2/store"
+)
+
+type Options struct {
+	// Store to persist the tokens
+	Store store.Store
+	// PublicKey base64 encoded, used by JWT
+	PublicKey string
+	// PrivateKey base64 encoded, used by JWT
+	PrivateKey string
+}
+
+type Option func(o *Options)
+
+// WithStore sets the token providers store
+func WithStore(s store.Store) Option {
+	return func(o *Options) {
+		o.Store = s
+	}
+}
+
+// WithPublicKey sets the JWT public key
+func WithPublicKey(key string) Option {
+	return func(o *Options) {
+		o.PublicKey = key
+	}
+}
+
+// WithPrivateKey sets the JWT private key
+func WithPrivateKey(key string) Option {
+	return func(o *Options) {
+		o.PrivateKey = key
+	}
+}
+
+func NewOptions(opts ...Option) Options {
+	var options Options
+	for _, o := range opts {
+		o(&options)
+	}
+	//set default store
+	if options.Store == nil {
+		options.Store = store.DefaultStore
+	}
+	return options
+}
+
+type GenerateOptions struct {
+	// Expiry for the token
+	Expiry time.Duration
+	// Metadata associated with the account
+	Metadata map[string]string
+	// Roles/scopes associated with the account
+	Roles []string
+}
+
+type GenerateOption func(o *GenerateOptions)
+
+// WithExpiry for the generated account's token expires
+func WithExpiry(d time.Duration) GenerateOption {
+	return func(o *GenerateOptions) {
+		o.Expiry = d
+	}
+}
+
+// WithMetadata for the token
+func WithMetadata(md map[string]string) func(o *GenerateOptions) {
+	return func(o *GenerateOptions) {
+		o.Metadata = md
+	}
+}
+
+// WithRoles for the token
+func WithRoles(rs []string) func(o *GenerateOptions) {
+	return func(o *GenerateOptions) {
+		o.Roles = rs
+	}
+}
+
+// NewGenerateOptions from a slice of options
+func NewGenerateOptions(opts ...GenerateOption) GenerateOptions {
+	var options GenerateOptions
+	for _, o := range opts {
+		o(&options)
+	}
+	//set default Expiry of token
+	if options.Expiry == 0 {
+		options.Expiry = time.Minute * 15
+	}
+	return options
+}

auth/token/token.go

@@ -0,0 +1,23 @@
+package token
+
+import (
+	"errors"
+
+	"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(subject string, opts ...GenerateOption) (*auth.Token, error)
+	Inspect(token string) (*auth.Token, error)
+	String() string
+}

config/cmd/cmd.go

@@ -70,8 +70,7 @@ import (
 	memTracer "github.com/micro/go-micro/v2/debug/trace/memory"
 
 	// auth
-	jwtAuth "github.com/micro/go-micro/v2/auth/jwt"
+	svcAuth "github.com/micro/go-micro/v2/auth/service"
-	sAuth "github.com/micro/go-micro/v2/auth/service"
 	storeAuth "github.com/micro/go-micro/v2/auth/store"
 
 	// auth providers
@@ -271,11 +270,6 @@ var (
 			EnvVars: []string{"MICRO_AUTH_PRIVATE_KEY"},
 			Usage:   "Private key for JWT auth (base64 encoded PEM)",
 		},
-		&cli.StringSliceFlag{
-			Name:    "auth_exclude",
-			EnvVars: []string{"MICRO_AUTH_EXCLUDE"},
-			Usage:   "Comma-separated list of endpoints excluded from authentication, e.g. Users.ListUsers",
-		},
 		&cli.StringFlag{
 			Name:    "auth_provider",
 			EnvVars: []string{"MICRO_AUTH_PROVIDER"},
@@ -365,9 +359,8 @@ var (
 	}
 
 	DefaultAuths = map[string]func(...auth.Option) auth.Auth{
-		"service": sAuth.NewAuth,
+		"service": svcAuth.NewAuth,
 		"store":   storeAuth.NewAuth,
-		"jwt":     jwtAuth.NewAuth,
 	}
 
 	DefaultAuthProviders = map[string]func(...provider.Option) provider.Provider{
@@ -665,7 +658,7 @@ func (c *cmd) Before(ctx *cli.Context) error {
 	}
 
 	if len(ctx.String("auth_token")) > 0 {
-		authOpts = append(authOpts, auth.Token(ctx.String("auth_token")))
+		authOpts = append(authOpts, auth.ServiceToken(ctx.String("auth_token")))
 	}
 
 	if len(ctx.String("auth_public_key")) > 0 {
@@ -676,10 +669,6 @@ func (c *cmd) Before(ctx *cli.Context) error {
 		authOpts = append(authOpts, auth.PrivateKey(ctx.String("auth_private_key")))
 	}
 
-	if len(ctx.StringSlice("auth_exclude")) > 0 {
-		authOpts = append(authOpts, auth.Exclude(ctx.StringSlice("auth_exclude")...))
-	}
-
 	if name := ctx.String("auth_provider"); len(name) > 0 {
 		p, ok := DefaultAuthProviders[name]
 		if !ok {
@@ -707,9 +696,7 @@ func (c *cmd) Before(ctx *cli.Context) error {
 	}
 
 	if len(authOpts) > 0 {
-		if err := (*c.opts.Auth).Init(authOpts...); err != nil {
+		(*c.opts.Auth).Init(authOpts...)
-			logger.Fatalf("Error configuring auth: %v", err)
-		}
 	}
 
 	if ctx.String("config") == "service" {

service.go

@@ -118,7 +118,7 @@ func (s *service) Init(opts ...Option) {
 		// May need to re-read value on change
 		// TODO: should be scoped to micro/auth/token
 		if tk, _ := config.Get("token"); len(tk) > 0 {
-			s.opts.Auth.Init(auth.Token(tk))
+			s.opts.Auth.Init(auth.ServiceToken(tk))
 		}
 	})
 }

util/wrapper/wrapper.go

@@ -164,6 +164,11 @@ func AuthHandler(fn func() auth.Auth) server.HandlerWrapper {
 				return h(ctx, req, rsp)
 			}
 
+			// Check for auth service endpoints which should be excluded from auth
+			if strings.HasPrefix(req.Endpoint(), "Auth.") {
+				return h(ctx, req, rsp)
+			}
+
 			// Extract the token if present. Note: if noop is being used
 			// then the token can be blank without erroring
 			var token string
@@ -177,29 +182,16 @@ func AuthHandler(fn func() auth.Auth) server.HandlerWrapper {
 			}
 
 			// Verify the token
-			account, authErr := a.Verify(token)
+			account, err := a.Inspect(token)
+			if err != nil {
+				return errors.Unauthorized("go.micro.auth", err.Error())
+			}
 
-			// If there is an account, set it in the context
+			// There is an account, set it in the context
-			if authErr == nil {
-				var err error
 			ctx, err = auth.ContextWithAccount(ctx, account)
-
 			if err != nil {
 				return err
 			}
-			}
-
-			// Return if the user disabled auth on this endpoint
-			for _, e := range a.Options().Exclude {
-				if e == req.Endpoint() {
-					return h(ctx, req, rsp)
-				}
-			}
-
-			// If the authErr is set, prevent the user from calling the endpoint
-			if authErr != nil {
-				return errors.Unauthorized("go.micro.auth", authErr.Error())
-			}
 
 			// The user is authorised, allow the call
 			return h(ctx, req, rsp)