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Issue #3541

Updated by milan over 3 years ago

h3. General Problem:

Some plugins have validation requirements for the membership of content units in a repository. The validation required depends on the plugin and the content type. Currently add/remove is done with a POST to v3/repositories/1234/versions/. `v3/repositories/1234/versions/`. This does not involve the plugins at all, so there is no opportunity for plugins to create these validations.

h3. Example Problem with Docker:

ManifestLists cannot be added unless the Manifests they refer to are also in the repository.
L1 is ManifestList, and it refers to (contains) 2 Manifests, M1, M2. The repository is considered corrupt if it contains L1, but not M1 and M2. M1 and M2 could be in the repository without L1.

h2. Solutions:

There are currently several proposed solutions [0] that fall into two categories.

# plugin-controlled add/remove endpoints. POST to v3/repositories/1234/versions/ should be disabled, each plugin will need to provide an add/remove endpoint. There are a few ideas for how to namespace these endpoints, and what kind of tooling can be provided by core.
# validation hooks. The core endpoint will remain and will validate using hooks that plugin writers optionally provide.

https://www.redhat.com/archives/pulp-dev/2018-March/msg00066.html

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