func (m *RoundTripMetrics) recordStatusCode(a request.Attempt) {
if a.GetResponse() == nil {
return
}
statusCode := a.GetResponse().StatusCode
if c, ok := m.statusCodes[statusCode]; ok {
c.Inc()
return
}
c, err := m.newCounter()
if err != nil {
log.Errorf("failed to create a counter: %v", err)
return
}
c.Inc()
m.statusCodes[statusCode] = c
}