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This PR introduces support for multiple versions of the ndc-spec by adding a new `VersionedSchemaAndCapabilities` enum variant under the `DataConnectorLink` in OpenDD. This allows the capture of both ndc v0.1.* and v0.2.* schema and capabilities. This is achieved by referencing the `ndc-models` crate twice, once for `v0.1.4` and once for the first commit after `v0.1.4`. That commit was chosen to avoid actual v0.2.0 breaking changes for now, while we lay in this multiple version support plumbing. Future PRs will use a newer commit and adopt the breaking changes where necessary. The `VersionedSchemaAndCapabilities::V02` variant uses the the v0.2 reference of `ndc-models`. Then, during metadata resolve, when we resolve the `DataConnectorContext` from `DataConnectorLink`, we perform a migration of v0.1 types to v0.2 types and store and use the v0.2 types during metadata resolve. This migration is performed in the new module `ndc_migration`. We also record the `NdcVersion` (either `V01` or `V02`) in the `DataConnectorLink`. The `execute` crate will need to use this to determine which version to send to the connector at runtime (to be implemented in a future PR). The new changes to OpenDD are hidden from the JSON Schema via a new `UnstableFeatures` flag, and the use of the new variant is gated behind it in metadata resolve, since we don't yet support it upstream in the `execute` crate. V3_GIT_ORIGIN_REV_ID: d6d8a768ea3537c0b5e620799e94d3dd1e529526 |
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