My Application is in a Kubernetes cluster and I'm using Java v12 SDK to interact with the Blob Storage. To authorize against Blob Storage I'm using Managed Identities.
My application needs to copy blobs within one container. I haven't found any particular recommendations or examples of how SDK should be used to do the copy.
I figured that the following approach works when I'm working with the emulator
copyBlobClient.copyFromUrl(sourceBlobClient.getBlobUrl());
However, when this gets executed in the cluster I get the following error
<Error>
<Code>CannotVerifyCopySource</Code>
<Message>The specified resource does not exist. RequestId: __ Time: __ </Message>
</Error>
Message says "resource does not exist" but the blob is clearly there. My container has private access, though.
Now when I change the public access level to "Blob(anonymous read access for blobs only)" everything works as excepted. However, public access not acceptable to me.
Main question - what are the right ways to implement copy blob using Java v12 SDK.
What I could miss or misconfigured in my situation?
And the last is the error message itself. There is a part which says "CannotVerifyCopySource" which kind of helps you understand that there is something with access, but the message part is clearly misleading. Shouldn't it be more explicit about the error?