jamesfredley opened a new pull request, #16302: URL: https://github.com/apache/grails-core/pull/16302
## Description Fixes https://github.com/apache/grails-core/issues/16162. This is a real memory leak, not user error. `FormFieldsTemplateService` is a singleton, and template lookup caching is on by default. `findTemplateCached` was `@Memoized` with a `BeanPropertyAccessor` argument. `BeanPropertyAccessorImpl` is `@Canonical` and includes `rootBean` and `value`, so each request creates a unique unbounded cache key. Those accessors (and their beans) cannot be collected while the service lives, which grows into heap exhaustion on command objects and other non-domain forms. `findTemplate` now builds the candidate template path list first and memoizes only that list of strings. Distinct accessors for the same property shape share one cache entry, and request beans are no longer retained. Theme-first then default fallback order is unchanged. ## Contributor Checklist Please review the following checklist before submitting your pull request. Pull requests that do not meet these requirements may be closed without review. ### Issue and Scope - [x] This PR is linked to an existing issue that has been **acknowledged or approved** by the project team. If no approved issue exists, please give background on why this change is necessary. Tickets are preferred for release change log history. - [x] This PR addresses the **complete scope** of the linked issue. Partial implementations or unfinished work should not be submitted for review. - [x] This PR contains a **single, focused change**. Unrelated changes should be submitted as separate pull requests. - [x] This PR targets the **correct branch** for the type of change: - **Patch release branches** (e.g., `7.0.x`): Bug fixes only. No new features or API changes. - **Minor release branches** (e.g., `7.1.x`): New features are welcome, but breaking existing APIs must be avoided. - **Major release branches** (e.g., `8.0.x`): Reserved for major changes. Breaking API changes are permitted. ### Code Quality - [x] I have **added or updated tests** that cover the changes introduced in this PR. All code contributions are expected to include appropriate test coverage. - [ ] I have verified that all existing tests pass by running `./gradlew build --rerun-tasks`. - [x] My code follows the project's **code style** guidelines. I have run `./gradlew codeStyle` and resolved any violations. See [Code Style](../CONTRIBUTING.md#code-style) for details. - [x] This PR does **not** include mass reformatting, style-only changes, or large-scale refactoring unless it was **explicitly approved** in the linked issue. Unsolicited reformatting will not be accepted. - [x] If generative AI tooling was used in preparing this contribution, a quality model was used to ensure contributions are **consistent with the project's quality standards**. ### Licensing and Attribution - [x] All contributed code is provided under the [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0), and new source files include the appropriate **Apache license header**. - [x] I have the necessary rights to submit this contribution and confirm it is my own original work (see [Legal Notice](../CONTRIBUTING.md#i-want-to-contribute)). - [x] If generative AI tooling was used in preparing this contribution, I have followed the [Apache Software Foundation's policy on generative tooling](https://www.apache.org/legal/generative-tooling.html) and have properly attributed its use. ### Documentation - [ ] If this PR introduces user-facing changes, I have included or updated the relevant documentation. - [ ] If this PR adds a new feature, I have updated the **What's New** section of the Grails Guide. - [ ] If this PR introduces breaking changes or changes that require user action during an upgrade, I have updated the **Upgrade Notes** for the corresponding version in the Grails Guide. - [x] The PR description clearly explains **what** was changed and **why**. ## Generative AI attribution Generative AI tooling (Cursor Grok 4.6 with GPT review) was used to draft the implementation and tests. The change was reviewed, tested in `grails-fields` (`./gradlew :grails-fields:test` and `:grails-fields:codeStyle`), and edited before submission. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
