auth

func FileSource(path string, token *oauth2.Token, conf *oauth2.Config) oauth2.TokenSource

func NewAccessTokenClient(clientId, clientSecret string, ctx context.Context, accessToken string) *http.Client

func NewFileSourceClient(clientId, clientSecret string, ctx context.Context, tokenFile string, authFn authCodeFn) (*http.Client, error)

func NewRefreshTokenClient(clientId, clientSecret string, ctx context.Context, refreshToken string) *http.Client

func NewServiceAccountClient(serviceAccountFile string, ctx context.Context) (*http.Client, error)

func ReadFile(path string) ([]byte, bool, error)

func ReadToken(path string) (*oauth2.Token, bool, error)

func SaveToken(path string, token *oauth2.Token) error