Working Group Proposal for Reference Types #335
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jdolitsky
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@opencontainers/distribution-spec-maintainers given the size of this, we are giving this 2 weeks for any objections before merging. It was presented on the OCI call today and hopefully a recording will be posted soon. After merging it still won't be a tagged release, so if there are any issues raised, we can always open another PR. |
This was referenced Aug 11, 2022
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| *Note: this feature was added in distibution-spec 1.1. | ||
| Registries should see [Enabling the Referrers API](#enabling-the-referrers-api) before enabling this.* | ||
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| To fetch the list of referrers, perform a `GET` request to a path in the following format: `/v2/<name>/referrers/<reference>` <sup>[end-12a](#endpoints)</sup>. |
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Reading through this and the examples below, I'm not actually clear on what string <reference> actually is. Media Type? digest? arbitrary value?
vbatts
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| Example request with filtering: | ||
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| ``` | ||
| GET /v2/<name>/referrers/<ref>?artifactType=application/vnd.example.sbom.v1 |
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it's <ref> here, but <reference> everywhere else
vbatts
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| ### Backwards Compatibility | ||
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| Client implementations MUST support registries that implement partial or older versions of the OCI Distribution Spec. | ||
| This section describes client fallback procedures that MUST be implemented when a new/optional API is not available from a Registry. |
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right, so, if there is a backward-compat condition, then is it required that this feature bumps the version to 1.1?
vbatts
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| This tag should return an Image Index matching the expected response of the [Referrers API](#listing-referrers). | ||
| Maintaining the content of this tag is the responsibility of clients pushing and deleting Image and Artifact Manifests that contain a `refers` field. | ||
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| Multiple clients could attempt to update the tag simultaneously resulting in race conditions and data loss. |
sudo-bmitch
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This is a culmination of many people's work over the last few months to introduce reference types to OCI as part of the [OCI Reference Types WG](oci-ref-type-wg). This PR contains the changes from our chosen proposal, [Proposal E][proposal-e]. [oci-ref-type-wg]: https://github.com/opencontainers/tob/blob/main/proposals/wg-reference-types.md [proposal-e]: https://github.com/opencontainers/wg-reference-types/blob/main/docs/proposals/PROPOSAL_E.md Co-authored-by: Josh Dolitsky <[email protected]> Co-authored-by: Josh Dolitsky <[email protected]> Co-authored-by: Michael Brown <[email protected]> Signed-off-by: Brandon Mitchell <[email protected]>
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This was referenced Sep 15, 2022
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This is a culmination of many people's work over the last few months to introduce reference types to OCI as part of the OCI Reference Types WG.
This PR contains the changes from our chosen proposal, Proposal E, relevant to the distribution-spec. We're looking forward to hearing feedback from distribution-spec maintainers on these changes!
We have also opened a similar PR for the
image-spec: opencontainers/image-spec#934