func respRemoteImgHandler(w http.ResponseWriter, r *http.Request) {
var body []byte
vars := mux.Vars(r)
imagePath := vars["path"]
domain := vars["domain"]
// Set up options
opts := optimizer.Options{
Mime: mime.TypeByExtension(path.Ext(imagePath)),
}
opts.SetFromRequest(r)
opts.Optimize()
// Try to fetch cached iamge.
if err := serveCachedRespImg(w, r, domain, imagePath, opts); err == nil {
return
}
body, statusCode, err := getImageFromUpstream(domain, imagePath)
if err != nil {
imgHeaders(&w, r)
http.Error(w, http.StatusText(statusCode), statusCode)
return
}
optimizeAndServeImg(w, r, opts, domain, imagePath, body)
return
}
func respLocalImgHandler(w http.ResponseWriter, r *http.Request) {
domain := r.Host
imagePath := r.RequestURI
opts := optimizer.Options{
Mime: mime.TypeByExtension(path.Ext(imagePath)),
}
opts.SetFromRequest(r)
opts.Optimize()
// Try to fetch cached iamge.
if err := serveCachedRespImg(w, r, domain, imagePath, opts); err == nil {
imgHeaders(&w, r)
return
}
body, err := getImageFromCache(fmt.Sprintf("%s/%s", documentRoot, imagePath))
if err != nil {
http.Error(w, http.StatusText(404), 404)
return
}
optimizeAndServeImg(w, r, opts, domain, imagePath, body)
}