Method ServeHTTP

imageproxy.go:200–224

ServeHTTP handles incoming requests.

(w http.ResponseWriter, r *http.Request)

// ServeHTTP handles incoming requests.
func (p *Proxy) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	if r.URL.Path == "/favicon.ico" {
		return // ignore favicon requests
	}

	if r.URL.Path == "/" || r.URL.Path == "/health-check" {
		fmt.Fprint(w, "OK")
		return
	}

	if r.URL.Path == "/metrics" {
		var h = promhttp.Handler()
		h.ServeHTTP(w, r)
		return
	}

	var h http.Handler = http.HandlerFunc(p.serveImage)
	if p.Timeout > 0 {
		h = tphttp.TimeoutHandler(h, p.Timeout, "Gateway timeout waiting for remote resource.")
	}

	timer := prometheus.NewTimer(metricRequestDuration)
	defer timer.ObserveDuration()
	h.ServeHTTP(w, r)
}

// serveImage handles incoming requests for proxied images.
func (p *Proxy) serveImage(w http.ResponseWriter, r *http.Request) {