feat(persistence): introduce AWS S3 backend#42
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smunini merged 7 commits intoHeliosSoftware:mainfrom Mar 4, 2026
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… and env-gated integration tests - Implement S3 backend behind 's3' feature using aws_sdk_s3 only - Add CRUD, vread, history, bulk export, bulk submit - Add bucket-per-tenant and prefix-per-tenant modes - Integrate with capability matrix - Add env-gated real AWS integration tests - Update documentation - No automatic bucket creation (HeadBucket validation only)
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- Fix outcome placement: error OperationOutcome now goes in response.outcome instead of being incorrectly placed at entry.resource - Add fullUrl to response entries using HFS_BASE_URL - Honor Prefer header (return=minimal, return=representation, return=OperationOutcome) in batch and transaction responses - Add lastModified, etag, and location to batch response entries by unifying batch and transaction paths through BundleEntryResult - Add 22 new integration tests in batch_conformance.rs covering all fixes
- Add S3 storage backend mode to ServerConfig and StorageBackendMode - Wire S3Backend into HFS main binary with HFS_S3_BUCKET, HFS_S3_REGION, and HFS_S3_VALIDATE_BUCKETS env vars - Add s3 feature flag to helios-hfs and helios-rest Cargo.toml - Implement stub SearchProvider and ConditionalStorage traits for S3 (returns UnsupportedCapability errors) - Improve S3 client error mapping for access denied, timeout, and dispatch failures - Add S3 backend to Inferno CI test matrix with conditional execution - Update README with S3 backend docs and env vars
smunini
approved these changes
Mar 4, 2026
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Summary
This PR introduces a new AWS S3 persistence backend behind the s3 feature flag.
The implementation integrates with the existing backend abstraction and capability matrix and is intended to provide object-storage–based persistence without claiming advanced query/index semantics.
Implemented Capabilities
Integration
Notes