Story #2099
closed
As a user, I can sync v2 schema manifests
100%
Description
As a result of this story, Pulp Docker will support both schema versions, 1 and 2 for sync, publish and copy.
To support both schema 1 and 2 we need to:
1. during sync always make 2 requests to the registry and in each request set properly the headers.
2. as a result of 2 requests we will have to save to the DB manifest with both schemas.
3. change Tag model and add schema_version field and include it into the unit_key( having 2 instances of tags will facilitate copy operation)
4. make sure copy operation works with above changes related to Tag model.
5. write a migration for Tag model change, also write a migration to drop old index
6. in manifest schema 2 there is a config array that contains a config blob, which is treated as regular layer. In order to have a runable docker image config layer should also be present. That means that we would need to download it and store in the DB( as a regular blob layer). That means that most likely we would need to change Manifest model and add a config layer blob field to it. No migration needs to be written for this field
7. change the schema of the crane metadata file to have two manifest lists: one for schema 1, and one for schema 2
8. change publish to create the new crane metadata file, also change publish directory structure for manifests
Note:
this work will not enable support for manifest list( aka fat manifest)
Related issues
.
As a user, I can sync manifests schema version 2.
closes #2099