Add support for AwsSv4 for external callout - #142
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diksha-sf merged 1 commit intoSep 10, 2026
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Support the AwsSv4 External Credential protocol in the local-dev direct callout path so functions can call AWS services (e.g. S3) with SigV4 request signing injected client-side. - credentials.py: add AWS_SIG_V4 = "AwsSv4" to the AuthType enum - auth.py: sign requests in DynamicAuthHandler via a new _sign_aws_sigv4 branch — builds the canonical request, string-to-sign, and chained HMAC-SHA256 signing key; sets Authorization and x-amz-* headers. Requires aws_access_key_id, aws_secret_access_key, aws_region, and aws_service; aws_session_token is signed when present. - tests: validate signing against an independent SigV4 reference impl (frozen clock), plus empty-body hash, session-token, and missing-field cases - README: document the AwsSv4 auth type and its config keys Verified end-to-end against a live org + AWS S3 (HTTP 200).
ritaagarwala-sf
approved these changes
Sep 9, 2026
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Verified end-to-end against a live org + AWS S3 (HTTP 200).