BlobURL : getProperties : HEAD

[tiagocpontesp]

There seems to be no mapping to check for the existence of block blobs.

[XiaoningLiu]

Hi @tiagocpontesp

Well, you are correct. Methods provided in BlobURL and other XXURL classes are 1:1 mapping to Azure Storage all provided RESTful APIs. There is not "check blob existing" RESTful API provided, so not in the SDK.

The easy way is for a quick check is to call BlobURL.getProperties() and catch the error, if the statusCode is 404. So the blob doesn't exist.

BTW, in which scenario, do you need to check a blob existence?

[tiagocpontesp]

Hi @XiaoningLiu :)
I'm developing a migration process. I'd rather not re-upload previously uploaded blobs, and this would save me some work.
BlobURL.getProperties(Aborter.timeout(TIMEOUT)) seems to hang when nonexistent -- It should get rejected with the error, right?

[tiagocpontesp]

I can't replicate this anymore. All's good -- getting back a RestError.