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fix(aws): configure S3 Express session provider grants - #851

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xuanwo/s3-express-session-provider-mode
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fix(aws): configure S3 Express session provider grants#851
Xuanwo wants to merge 1 commit into
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xuanwo/s3-express-session-provider-mode

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@Xuanwo Xuanwo commented Aug 24, 2026

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S3ExpressSessionProvider is the S3 Express session credential source that can be used directly by Signer, but it always requested ReadWrite. This left the typed ReadOnly and MaximumAllowed selections unavailable to automatic session refresh.

Allow the provider to bind any S3ExpressSessionGrantSelection while preserving ReadWrite as the constructor default. Refreshed sessions retain the configured selection, including omission of x-amz-create-session-mode for MaximumAllowed.

Live AWS acceptance was not run.

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Xuanwo marked this pull request as ready for review August 24, 2026 08:16
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