Migration Plugin

Problem¶

Currently a task is created for every pulp3 repo, regardless whether it is fully migrated or not. If everything has been migrated , task won't perform much work but there are still DB calls with attempts to create some resources or to check their existence.

Solution¶

1. Check whether there are any unmigrated resources. If not, finish migration task, don't trigger any child ones.
2. Before creating a task check whether all resources have been migrated for the specified pulp 3 repo. If at least one requires a migration, create a task.

Resources to check: pulp2repository, pulp2importer, pulp2distributor. https://github.com/pulp/pulp-2to3-migration/blob/master/pulp_2to3_migration/app/migration.py#L270