Story #5008

Updated by ttereshc about 2 years ago

RemoveDuplicates stage provides the opportunity to enforce uniqueness constraints for content at the sync time.
The duplicate problem can be encountered at any time content is added to a repository, not only at sync time.
E.g. Content was uploaded, or content was synced as a part of other repo, and now it's added/copied to a new repository.

It would be good if some check/validation happened for any added content, e.g. "at this stage":

Examples for where uniqueness might be needed in a repo version:
- only one content unit with a certain characteristics should be present in a repo (only one advisory with the same id, only one module_defaults for a module, etc)

This issue was discussed on this thread:

h3. Solution

On the plugin content model define a @repo_key@ - one or more fields which must be unique within a repo version.

Check uniqueness of the @repo_key@ for each added content type at the repository version creation time
Whether it's sync, copy, or upload, @repo_key@ uniqueness will be ensured if core/plugin devs use @with RepositoryVersion.create(...)@ context manager.