spring-projects / spring-projects/spring-framework

Introduce dedicated contract for contributing runtime hints for a bean

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in: core theme: aot type: enhancement
Dominant language
Java
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Description

As discussed in https://github.com/spring-projects/spring-framework/issues/35500#issuecomment-3334284774 there is a desire to create a dedicated hook point for contributing runtime hints (and runtime hints only) for a bean.

Right now we use BeanRegistrationAotProcessor for the lack of a better option but the callback provides the whole code generation machinery that such implementations do not need. Having a dedicated callback should achieve the following:

  • Ease unit testing as we only need to provide RuntimeHints
  • Clarify the scope so that we can not invoke such implementations at all if runtime hints aren't required.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading the linked discussion and locating the current BeanRegistrationAotProcessor implementations that contribute runtime hints. Define the dedicated runtime-hints-only contract and update its integration so implementations receive RuntimeHints without the broader code-generation machinery. Done means unit tests can provide only RuntimeHints and hint-only implementations are skipped when runtime hints are not required.

Written by the indexing model from the issue text.

Assessment

Tech stack
java, spring
Domain
backend
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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