Struct statResponseWriter

io.go:36–45

statResponseWriter collects the amount of bytes written. The wrapped ResponseWriter must implement http.CloseNotifier. Additionally it caches response status code.

//
// Additionally it caches response status code.
type statResponseWriter struct {
	http.ResponseWriter

	statusCode int
	// wroteHeader tells whether the header's been written to
	// the original ResponseWriter
	wroteHeader bool

	bytesWritten prometheus.Counter
}

const (
	XCacheHit  = "HIT"