Exemplo n.º 1
0
// TODO: this can be optimized significantly..........
// Ping / DecodeConfig ... do we have to use image magick.......?
func GetImageInfo(ctx context.Context, w http.ResponseWriter, r *http.Request) {
	url := r.URL.Query().Get("url")
	if url == "" {
		respond.ApiError(w, 422, errors.New("no image url"))
		return
	}

	response, err := app.Fetcher.Get(ctx, url)
	if err != nil {
		respond.ApiError(w, 422, err)
		return
	}
	data := response.Data

	ng := imagick.Engine{}
	imfo, err := ng.GetImageInfo(data)
	if err != nil {
		respond.ApiError(w, 422, err)
		return
	}
	imfo.URL = response.URL.String()
	imfo.Mimetype = MimeTypes[imfo.Format]

	w.Header().Set("X-Meta-Width", fmt.Sprintf("%d", imfo.Width))
	w.Header().Set("X-Meta-Height", fmt.Sprintf("%d", imfo.Height))
	w.Header().Set("Cache-Control", fmt.Sprintf("public, max-age=%d", app.Config.CacheMaxAge))
	respond.JSON(w, 200, imfo)
}
Exemplo n.º 2
0
func (im *Image) LoadImage() (err error) {
	defer metrics.MeasureSince([]string{"fn.image.LoadImage"}, time.Now())

	// TODO: throttle the number of images we load at a given time..
	// this should be configurable...

	defer func() {
		if r := recover(); r != nil {
			var ok bool
			err, ok = r.(error)
			if !ok {
				err = fmt.Errorf("imgry: %v", r)
			}
		}
	}()

	var formatHint string
	if im.SrcFileExtension() == "ico" {
		formatHint = "ico"
	}

	ng := imagick.Engine{}
	im.img, err = ng.LoadBlob(im.Data, formatHint)
	if err != nil {
		if err == imagick.ErrEngineFailure {
			lg.Fatalf("**** ENGINE FAILURE on %s", im.SrcUrl)
		}
		return err
	}

	im.sync()

	return nil
}