blob: add Content-Disposition override support for pre-signed URLs in AWS and GCP

[roseyang62]

Summary

Add optional contentDisposition field to PresignedUrlRequest to allow consumers to override the Content-Disposition header in pre-signed download URLs.

AWS E2E Test:https://docs.google.com/document/d/1a5JKPqnODjd6mKzAyqSjK8PlnxTvgp4BjExzYcrel00/edit?tab=t.0

For GCP: signUrl requires a SA private key for local signing. My OAuth credentials do not provide a private key, making it impossible to generate valid presigned URLs in test environments without a SA JSON key file.

Some conventions to follow

1. add the module name as a prefix
   • for example: add a prefix: docstore: for document store module, blobstore for Blob Store module
2. for a test only PR, add test:
3. for a perf improvement only PR, add perf:
4. for a refactoring only PR, add "refactor:"

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.98%. Comparing base (1477146) to head (9d1ec75).

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #331      +/-   ##
============================================
+ Coverage     81.97%   81.98%   +0.01%     
  Complexity      520      520              
============================================
  Files           181      181              
  Lines         11112    11119       +7     
  Branches       1477     1480       +3     
============================================
+ Hits           9109     9116       +7     
  Misses         1340     1340              
  Partials        663      663              

Flag	Coverage Δ
unittests	81.98% <100.00%> (+0.01%)	⬆️

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[sharatchandrag]

Please provide the real cloud testing scenario document for the pr