CODEWITHSUNDEEP
javagoogle-app-enginegoogle-cloud-storage
Dexter
Dexter

Reputation: 1750

Appengine Image serving URL, deleteServingUrl issue

I create an imageServing url over an image file uploaded on Google cloud storage using :

String key = "/gs/<bucket-name>/<path>";
ImagesService imagesService = ImagesServiceFactory.getImagesService();
ServingUrlOptions options = ServingUrlOptions.Builder
                .withGoogleStorageFileName(key)
                .imageSize(900) // Optional.
                .crop(true); // Optional.
String servingUrl = imagesService.getServingUrl(options);

But there does not seem to be a method to delete this url. The available method "deleteServingUrl" accepts a blobKey, which I do not use.

Does this mean I do not need to delete the servingUrl ?

///////EDIT

Using Appengine with objectify. Created a servlet, UserImageEndpoint Defined it in web.xml as : 

<servlet>
    <servlet-name>UserImageEndpoint</servlet-name>
    <servlet-class>reach.backend.Servlets.UserImageEndpoint</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>UserImageEndpoint</servlet-name>
    <url-pattern>/userImageEndpoint</url-pattern>
</servlet-mapping>

Servlet class : 

public class UserImageEndpoint extends HttpServlet {

private static final Logger logger = Logger.getLogger(UserImageEndpoint.class.getName());
private static final String BUCKET_NAME_IMAGE = "xxxx-yyyy";


@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    //
    //
    //
    GcsFilename gcsFilename = new GcsFilename(BUCKET_NAME_IMAGE, actualImageId);
    GcsService gcsService = GcsServiceFactory.createGcsService();
    //this works, I get the meta-data, hence I am able to access
    logger.info(gcsService.getMetadata(gcsFilename).toString());
    BlobstoreService blobstoreService = BlobstoreServiceFactory.getBlobstoreService();
    BlobKey blobKey = blobstoreService.createGsBlobKey(
                        "/gs/" + gcsFilename.getBucketName() + "/" + gcsFilename.getObjectName());
    logger.info("Requesting fileName - " + blobKey.getKeyString());
    servingURL = ImagesServiceFactory.getImagesService().getServingUrl(
                        ServingUrlOptions.Builder.withBlobKey(blobKey));

Last line crashes with :

java.lang.IllegalArgumentException: ACCESS_DENIED: at com.google.appengine.api.images.ImagesServiceImpl.getServingUrl(ImagesServiceImpl.java:282)

//////EDIT Ling no. 282 seems to be the method deleteServingUrl(BlobKey blobKey), which I am not even calling right now...

Upvotes: 0

Views: 406

Answers (1)

Kristoffer
Kristoffer

Reputation: 26

As @konqi points out the Important-section in the docs state that you can not get a serving url if the file has already been made publicly available through Cloud Storage (cloud.google.com/appengine/docs/java/images)

I had the exact same issue but resolved it by not setting ACL to public in cloud storage before trying to create a serving url using the Blobstore API.

Upvotes: 1

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