尝试getServingUrl存储在GCS中的图像时OBJECT_NOT_FOUND [英] OBJECT_NOT_FOUND when trying to getServingUrl of an image stored in GCS

问题描述

我已经写了一个Servlet，用于从 blobstore （来自GCS的另一个图像）读取图像，然后在这两个图像上应用合成后，我将合成图像回到GCS。

我的代码运行良好，直到这里。

之后，当我尝试获取合成图像的服务URL时，我得到 OBJECT_NOT_FOUND 。

为了试验，我手动上传了GCS中的图片，并给了所有必要的权限。添加了作为OWNER的serviceaccount，并授予所有用户的READ访问权限。然后，我再次尝试获取服务网址。以下是我的代码： - $ /
$ b $ pre $ BlobKey newImageKey = blobstoreService.createGsBlobKey（gcsPath）;
//log.severe(\"GCS PATH：+ gcsPath +BlobKey：+ newImageKey）;

ServingUrlOptions选项= ServingUrlOptions.Builder.withBlobKey（newImageKey）;
字符串profilePicLink = imgService.getServingUrl（options）;


我也尝试了下面的代码： - $ /

  ServingUrlOptions选项= ServingUrlOptions.Builder.withGoogleStorageFileName（gcsPath）; 
字符串profilePicLink = imgService.getServingUrl（options）; 
  

在这两种情况下，这都是我得到的错误：

/ controller javax.servlet.ServletException：
java.lang.IllegalArgumentException：OBJECT_NOT_FOUND：

顺便说一句，我没有启用计费，因为我正在使用带有免费配额的默认存储桶。这还在开发中，所以免费配额适用于我。

好的，我找到了发生异常的位置......

[] responseBytes = ApiProxy.makeSyncCall（PACKAGE，GetUrlBase，
request.build（）。toByteArray（））;

以及抛出的异常是：

ApiProxy.ApplicationException应用程序错误8

启用结算和尝试过，仍然没用：（b / b）

一直试图解决这一整天，并试图在任何地方搜索解决方案。

如果在GCSFileOptions中添加.acl（public-read ）。

一旦ac l通过以上两种方法之一应用，在GCS云控制台中，您可以看到图像共享公开链接复选框以短划线形式出现，并且表示您没有权限编辑权限。看到它我感到困惑，因为我期待复选框被检查。

但即使在上述情况下，公共共享链接也可以正常工作： -

http://storage.googleapis.com/ [bucket_name] / [gcs_object_name]

如果有人能解释为什么getServingUrl不起作用，我仍然会很感激。是的，它仍然没有工作后设置默认acl读。

谢谢，
Sukalpo。

I have written a Servlet where I am reading an image from blobstore, another image from GCS and then after applying a composite on both these images I am storing the composite image back in GCS.

My code works well till here.

After that, when I am trying to get the serving url for the composite image, I am getting an OBJECT_NOT_FOUND.

Just to experiment I manually uploaded a image in GCS and gave all the necessary permissions. Added the serviceaccount as OWNER and gave READ access to All users. And then again I am just trying to get the serving url. Following is my code:-

BlobKey newImageKey = blobstoreService.createGsBlobKey(gcsPath);
//log.severe("GCS PATH: " + gcsPath + " BlobKey: " + newImageKey);

ServingUrlOptions options = ServingUrlOptions.Builder.withBlobKey(newImageKey);
String profilePicLink = imgService.getServingUrl(options);

I also tried the below code:-

ServingUrlOptions options = ServingUrlOptions.Builder.withGoogleStorageFileName(gcsPath);
String profilePicLink = imgService.getServingUrl(options);

And in both the cases this is the error that I am getting:

/controller javax.servlet.ServletException: java.lang.IllegalArgumentException: OBJECT_NOT_FOUND:

Btw, I have not enable billing as I am using the default bucket with the free quota. This is still in development so the free quota works for me.

OK, so I found out where exactly the exception is happening...

byte[] responseBytes = ApiProxy.makeSyncCall(PACKAGE, "GetUrlBase", request.build().toByteArray());

and the exception it is throwing is :

ApiProxy.ApplicationException Application Error 8

Enabled billing and tried, still of no use :(

Have been trying to solve this the whole day and tried to search a solution everywhere.

解决方案

Though this actually does not answer my original question but I have found a workaround. I installed python and gsutil and set the default acl of my bucket to read. Now when I am saving an image file in GCS I am just showing the public url link.

The above can also be achieved if in the GCSFileOptions we add .acl("public-read").

Once the acl is applied by either of the above two methods, in the GCS cloud console you can see the images shared publicly link check box comes as a dash and it says you do not have permission to edit permissions. I was getting confused seeing it, as I was expecting the checkbox to be checked.

But even in the above scenario the publicly shared link will work which is:-

http://storage.googleapis.com/[bucket_name]/[gcs_object_name]

I would still appreciate if someone can explain why the getServingUrl is not not working. Yes, it is still not working after set default acl to read.

Thanks, Sukalpo.

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