Example #1
0
func GetServingUrl(c *gin.Context) {
	r := c.Request
	ctx := appengine.NewContext(r)
	blobKey := appengine.BlobKey(c.Param("blobKey"))
	var err_msg string
	url, err := image.ServingURL(ctx, blobKey, nil)
	if err != nil {
		err_msg = "failed"
	}
	c.JSON(http.StatusOK, gin.H{"err": err_msg, "url": url, "blobKey": url.String()})
}
Example #2
0
func serveThumb(w http.ResponseWriter, r *http.Request, m map[string]interface{}) {

	c := appengine.NewContext(r)

	// c := appengine.NewContext(r)
	k := appengine.BlobKey(r.FormValue("blobkey"))

	var o image.ServingURLOptions = *new(image.ServingURLOptions)
	o.Size = 200
	o.Crop = true
	url, err := image.ServingURL(c, k, &o)

	loghttp.E(w, r, err, false)

	http.Redirect(w, r, url.String(), http.StatusFound)
}
Example #3
0
// GetServingURL gets URL to serve GCS file to users.
func GetServingURL(c context.Context, filename string) (servingURL *url.URL, err error) {

	blobKey, err := blobstore.BlobKeyForFile(c, filename)
	if err != nil {
		log.Errorf(c, "error for file %s:  %s", filename, err.Error())
		return nil, err
	}

	opts := &image.ServingURLOptions{Secure: true}
	servingURL, err = image.ServingURL(c, blobKey, opts)
	if err != nil {
		log.Errorf(c, "failed to get serving URL: %s", err.Error())
		return nil, err
	}

	return servingURL, nil
}
Example #4
0
func handleImages(w http.ResponseWriter, r *http.Request) {
	c := appengine.NewContext(r)

	switch r.Method {
	case "POST":
		blobs, vals, err := blobstore.ParseUpload(r)
		if err != nil {
			http.Error(w, "bad request", http.StatusBadRequest)
			log.Errorf(c, "bad request: %s", err.Error())
			return
		}
		bucketID := vals.Get("BucketID")
		if bucketID == "" {
			http.Error(w, "BucketID query parameter is required", http.StatusBadRequest)
			return
		}
		url, err := blobstore.UploadURL(c, "/admin/images", nil)
		if err == nil {
			w.Header().Set("UploadURL", url.String())
		}
		imgs := make([]Image, 0, 20)
		for _, infos := range blobs {
			for _, info := range infos {
				var img Image
				img.Name = info.Filename
				imgUrl, err := aimage.ServingURL(c, info.BlobKey, nil)
				if err != nil {
					log.Errorf(c, "failed to get serving url for blob '%s': %s", info.BlobKey, err.Error())
					http.Error(w, err.Error(), http.StatusInternalServerError)
					return
				}
				img.URL = imgUrl.String()
				img.ID = string(info.BlobKey)
				ir := blobstore.NewReader(c, info.BlobKey)
				cfg, _, err := image.DecodeConfig(ir)
				if err != nil {
					log.Warningf(c, "decode image '%s': %s", info.BlobKey, err.Error())
					err = blobstore.Delete(c, info.BlobKey)
					if err != nil {
						log.Errorf(c, "delete blob '%s': %s", info.BlobKey, err.Error())
					}
					continue
				}
				img.Height = cfg.Height
				img.Width = cfg.Width
				imgs = append(imgs, img)
			}
		}

		// add images to bucket and dtore
		err = datastore.RunInTransaction(c, func(c context.Context) error {
			bucketKey := datastore.NewKey(c, "Bucket", bucketID, 0, nil)
			var b Bucket
			err := datastore.Get(c, bucketKey, &b)
			if err != nil {
				return err
			}
			if b.Images == nil {
				b.Images = make([]string, 0, len(imgs))
			}
			for _, img := range imgs {
				_, err = datastore.Put(c, datastore.NewKey(c, "Image", img.ID, 0, nil), &img)
				if err != nil {
					return err
				}
				b.Images = append(b.Images, img.ID)
			}
			_, err = datastore.Put(c, bucketKey, &b)
			return err
		}, &datastore.TransactionOptions{XG: true})

		if err == datastore.ErrNoSuchEntity {
			for _, img := range imgs {
				err = blobstore.Delete(c, appengine.BlobKey(img.ID))
				if err != nil {
					log.Warningf(c, "delete blob '%s': %s", img.ID, err.Error())
				}
			}
			http.NotFound(w, r)
			return
		}
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			log.Errorf(c, "update datastore: %s", err.Error())
			return
		}

		w.Header().Set("Content-Type", "application/json")
		err = json.NewEncoder(w).Encode(&imgs)
		if err != nil {
			log.Errorf(c, "json encode: %s", err.Error())
		}
	case "GET":
		var imgs []Image
		_, err := datastore.NewQuery("Image").GetAll(c, &imgs)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			log.Errorf(c, "query images: %s", err.Error())
			return
		}
		w.Header().Set("Content-Type", "application/json")
		if imgs == nil {
			imgs = []Image{}
		}
		err = json.NewEncoder(w).Encode(&imgs)
		if err != nil {
			log.Errorf(c, "json encode: %s", err.Error())
		}
	default:
		http.Error(w, "Valid methods are GET and POST", http.StatusMethodNotAllowed)
		return
	}
}