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building-block-identity/docs/migration/contract-extraction-map.md

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Identity Contract Extraction Map

Source to Target Mapping

Current Source Target Group Notes
thalos-service identity token contracts Contracts/Tokens Keep payload shape behavior-compatible
thalos-service policy contracts Contracts/Policies Preserve policy semantics and required fields
thalos-service policy context contracts Contracts/Context Keep field naming stable for compatibility window
thalos-bff refresh session contracts Contracts/Sessions Candidate for shared capability standardization
provider flow metadata (JWT/Azure/Google) Contracts/Conventions Provider metadata stays transport-neutral and additive

Namespace Strategy

  • Current Thalos namespaces are mapped to BuildingBlock.Identity.Contracts.*.
  • Existing Thalos namespaces remain supported during compatibility window.

Extraction Sequence

  1. Introduce target contract namespaces in building-block-identity.
  2. Add compatibility bridge in Thalos consumers.
  3. Migrate service consumers first, then BFF consumers.
  4. Deprecate old namespace usage after compatibility window.
  5. Keep provider enum and provider-specific fields additive to avoid breaking consumers.