spring-projects / spring-projects/spring-security

Consider Adding `Authentication.Builder.authentication(Authentication)`

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for: team-attention in: core type: enhancement
Dominant language
Java
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Description

CAUTION This is a ticket that needs to be considered by the Spring Security team and thus is not currently a candidate for a pull request.

Currently, there is a lot of duplicated logic for merging two Authentication instances that cannot be replaced (see https://github.com/spring-projects/spring-security/commit/64c9e3e210d60b775ae0bcdea004fc1fc213e1ca for the locations).

We should consider adding Authentication.Builder.authentication(Authentication) which can encapsulate the logic and allow custom Authentication.toBuilder() implementations to replace the way in which the Authentication instances are merged.

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 reviewing the duplicated Authentication-merging locations referenced in commit 64c9e3e210d60b775ae0bcdea004fc1fc213e1ca, then examine the Authentication.Builder and Authentication.toBuilder APIs described in the issue. Done would require a Spring Security team decision on whether the builder method should be added and how custom toBuilder implementations should use it.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
authentication, security
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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