[Snyk] Security upgrade io.vertx:vertx-core from 3.8.5 to 4.5.28

[benjaminhuo]

Snyk has created this PR to fix 1 vulnerabilities in the maven dependencies of this project.

Snyk changed the following file(s):

• builders/testdata/java/vertx-helloworld/pom.xml

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score	Upgrade
	Allocation of Resources Without Limits or Throttling SNYK-JAVA-COMFASTERXMLJACKSONCORE-18517159	828	io.vertx:vertx-core: 3.8.5 -> 4.5.28 Major version upgrade Proof of Concept

Breaking Change Risk

Notice: This assessment is enhanced by AI.

---

Important

• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.

---

Note: You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs.

For more information:
🧐 View latest project report
📜 Customise PR templates
🛠 Adjust project settings
📚 Read about Snyk's upgrade logic

---

Learn how to fix vulnerabilities with free interactive lessons:

🦉 Allocation of Resources Without Limits or Throttling

[benjaminhuo]

The upgrade from Vert.x 3.8.5 to 4.5.28 is a major version jump that introduces significant and breaking API changes, requiring code modifications. The core asynchronous programming model has been updated, and numerous APIs have been changed or removed.

Key Breaking Changes:

• Asynchronous Operations with Futures: Vert.x 4 fully embraces a Future-based model for asynchronous operations. While many callback-based methods are still present to ease migration, many method signatures have changed. For example, methods that were previously fluent (returning this) now often return Future<Void>.
• WriteStream API: The WriteStream.write() and WriteStream.end() methods are no longer fluent and now return void or Future<Void>. This will break any chained calls on these methods.
• EventBus API: The request-response send() methods on the EventBus have been removed. Code must be updated to use the request() method instead.
• API Removals: All APIs that were marked as deprecated in the Vert.x 3.x series have been removed in version 4. Code using these deprecated methods will fail to compile.
• Future API Change: The Future.completer() method has been removed. In Vert.x 4, the Future<T> object itself implements Handler<AsyncResult<T>> and can be used directly as a handler.

Source: Vert.x 3 to 4 Migration Guide

Recommendation: This is a high-risk upgrade that requires significant code review and refactoring. Developers must follow the official migration guide carefully to update asynchronous handling, replace removed APIs, and adapt to new method signatures. A direct dependency replacement will lead to compilation and runtime errors.

Notice 🤖: This content was augmented using artificial intelligence. AI-generated content may contain errors and should be reviewed for accuracy before use.