Filter by tags

[EmmaZhu]

This is an uncompleted PR which is only to show how the basic logic works.
I'll still need to:

1. Add comments on why implementation looks like this.
2. Add support for ifTags condition for all blob operations
3. Add documents about limitation and best practice.
4. Add more cases for testing.
5. Make error report more accurate.

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[bbattezzati]

Hi @blueww @EmmaZhu, any update about this?
Is there anyway I could help?

[bbattezzati]

hi @blueww @EmmaZhu

I've forked [EmmaZhu:filter_by_tags_tablequeryway] branch and worked on top of it.
I worked on 2 point - support for ifTags condition for all blob operations.

Just submitted another PR.

[laurencenairne-work]

Is this now a dead PR, given it's six months old? Has the plan changed? What does the roadmap for adding endpoints for azure storage look like, because we still appear to be missing quite a bit.

[EmmaZhu]

Hi @laurencenairne-work , I'm still work on this, will update progress recently.

[AlexMunoz]

Do you need help @EmmaZhu? We are developing something and we need this feature.

[AlexMunoz]

Hello @EmmaZhu I've tested the lastest changes locally and it looks really good! findBlobsByTags works perfectly! Let me know if you need anything else from me to help move this forward.

[EmmaZhu]

Hi @AlexMunoz ,

We are trying to get this feature ready, thanks a lot for trying it and sharing your result. It'd be very helpful if you can share which scenario you have tested, and any defects seen.

Thanks a lot.

[AlexMunoz]

Hello @EmmaZhu Our scenario is not complex, we do this:

1. We create a blob and assign 3 tags to it.

On request:

1. Using findBlobsByTags, we get all the blobs that match one of two specific tags.
2. The resulting blob list is filtered by the values of the extra tag.
3. At the end we download the content of the remaining blobs.

findBlobsByTags was the functionality we needed for local development and the implementation in your PR works for our use case.

[EmmaZhu]

Change the filter by blob feature from unsupported to preview

[EmmaZhu]

Check SAS permission for filter blob by tags, get tags and set tags.