WIP: Optimize /file route

[freddyaboulton]

Description

Current /file route will scan over all the temp file sets to check if the file is allowed. This can cause latency in demos that create a lot of files across components, e.g. stable cascade (context). Solution here is to finish the scan early as soon as we find a match.

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Install Gradio from this PR

pip install https://gradio-builds.s3.amazonaws.com/dc1429c0a4d165bc14d686730424a9aea4e3762a/gradio-4.19.0-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@dc1429c0a4d165bc14d686730424a9aea4e3762a#subdirectory=client/python"

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🦄 change detected

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WIP: Optimize /file route

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[freddyaboulton]

Looks like this is helping the stablecascade demo so going to open for review. Seems like a reasonable change to make regardless though.

[abidlabs]

Thanks @freddyaboulton for the fix. Makes sense, with tens of thousands of files, the union operator is linear in the number of files, while this solution should be linear in the number of blocks (which is fixed and small), while the look ups themselves are constant time.

[freddyaboulton]

Thanks for the review @abidlabs !