Previously, we would retrieve the EntityManagerFactory’s DataSource as
soon as it was being post-processed. When the native
EntityManagerFactory is being bootstrapped asynchronously, this
retrieval would block until bootstrapping had completed. This negated
some of the benefits of asynchronous bootstrapping.
This commit updates DataSourceInitializedPublisher so that it only
accesses the EntityManagerFactory’s DataSource once its bootstrapping
has completed. This is achieved using a decorated JpaVendorAdapter
that is called one the boostrapping has completed.
Closes gh-14061
30ee481c98