oauth2/google/appengine.go

49 lines
1.0 KiB
Go

// +build appengine
package google
import (
"strings"
"appengine"
"github.com/golang/oauth2"
)
type AppEngineConfig struct {
context appengine.Context
scopes []string
cache oauth2.Cache
}
func NewAppEngineConfig(context appengine.Context, scopes []string) *AppEngineConfig {
return &AppEngineConfig{context: context, scopes: scopes}
}
func (c *AppEngineConfig) NewTransport() oauth2.Transport {
return oauth2.NewAuthorizedTransport(c, nil)
}
func (c *AppEngineConfig) NewTransportWithCache(cache oauth2.Cache) (oauth2.Transport, error) {
token, err := cache.Read()
if err != nil {
return nil, err
}
c.cache = cache
return oauth2.NewAuthorizedTransport(c, token), nil
}
func (c *AppEngineConfig) FetchToken(existing *oauth2.Token) (*oauth2.Token, error) {
token, expiry, err := appengine.AccessToken(c.context, strings.Join(c.scopes, " "))
if err != nil {
return nil, err
}
return &oauth2.Token{
AccessToken: token,
Expiry: expiry,
}, nil
}
func (c *AppEngineConfig) Cache() oauth2.Cache {
return c.cache
}