// shouldRetry returns a boolean as to whether this resp and err
// deserve to be retried. It returns the err as a convenience
func (f *Fs) shouldRetry(resp *http.Response, err error) (bool, error) {
if resp != nil {
if resp.StatusCode == 401 {
f.ts.Invalidate()
fs.Log(f, "401 error received - invalidating token")
return true, err
}
// Work around receiving this error sporadically on authentication
//
// HTTP code 403: "403 Forbidden", reponse body: {"message":"Authorization header requires 'Credential' parameter. Authorization header requires 'Signature' parameter. Authorization header requires 'SignedHeaders' parameter. Authorization header requires existence of either a 'X-Amz-Date' or a 'Date' header. Authorization=Bearer"}
if resp.StatusCode == 403 && strings.Contains(err.Error(), "Authorization header requires") {
fs.Log(f, "403 \"Authorization header requires...\" error received - retry")
return true, err
}
}
return fs.ShouldRetry(err) || fs.ShouldRetryHTTP(resp, retryErrorCodes), err
}
// shouldRetry determines whehter a given err rates being retried
func shouldRetry(err error) (again bool, errOut error) {
again = false
if err != nil {
if fs.ShouldRetry(err) {
again = true
} else {
switch gerr := err.(type) {
case *googleapi.Error:
if gerr.Code >= 500 && gerr.Code < 600 {
// All 5xx errors should be retried
again = true
} else if len(gerr.Errors) > 0 {
reason := gerr.Errors[0].Reason
if reason == "rateLimitExceeded" || reason == "userRateLimitExceeded" {
again = true
}
}
}
}
}
return again, err
}
// shouldRetryNoAuth returns a boolean as to whether this resp and err
// deserve to be retried. It returns the err as a convenience
func (f *Fs) shouldRetryNoReauth(resp *http.Response, err error) (bool, error) {
// For 429 or 503 errors look at the Retry-After: header and
// set the retry appropriately, starting with a minimum of 1
// second if it isn't set.
if resp != nil && (resp.StatusCode == 429 || resp.StatusCode == 503) {
var retryAfter = 1
retryAfterString := resp.Header.Get(retryAfterHeader)
if retryAfterString != "" {
var err error
retryAfter, err = strconv.Atoi(retryAfterString)
if err != nil {
fs.ErrorLog(f, "Malformed %s header %q: %v", retryAfterHeader, retryAfterString, err)
}
}
retryAfterDuration := time.Duration(retryAfter) * time.Second
if f.pacer.GetSleep() < retryAfterDuration {
fs.Debug(f, "Setting sleep to %v after error: %v", retryAfterDuration, err)
// We set 1/2 the value here because the pacer will double it immediately
f.pacer.SetSleep(retryAfterDuration / 2)
}
return true, err
}
return fs.ShouldRetry(err) || fs.ShouldRetryHTTP(resp, retryErrorCodes), err
}
// shouldRetry returns a boolean as to whether this resp and err
// deserve to be retried. It returns the err as a convenience
func shouldRetry(resp *http.Response, err error) (bool, error) {
return fs.ShouldRetry(err) || fs.ShouldRetryHTTP(resp, retryErrorCodes), err
}