[Snyk] Security upgrade io.vertx:vertx-core from 3.8.5 to 4.0.0

[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
	Improperly Controlled Modification of Dynamically-Determined Object Attributes SNYK-JAVA-COMFASTERXMLJACKSONCORE-17457695	738	io.vertx:vertx-core: 3.8.5 -> 4.0.0 Major version upgrade Proof of Concept

Breaking Change Risk

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🦉 Improperly Controlled Modification of Dynamically-Determined Object Attributes

[benjaminhuo]

The upgrade from Vert.x 3.8.5 to 4.0.0 is a major version change with significant breaking changes that require code modifications.

Key Breaking Changes:

• Asynchronous Programming Model: Vert.x 4 introduces a Future-based model for asynchronous operations alongside the traditional callback approach. While callbacks are still supported to ease migration, many APIs have changed. The Future.completer() method has been removed as Future<T> now directly implements Handler<AsyncResult<T>>. [1]
• API Removals and Behavioral Changes:
  • WriteStream: The write and end methods are no longer fluent (i.e., they do not return the stream instance). This is a breaking change that requires updating any chained calls. [1, 14]
  • Multi-Threaded Workers: The option to deploy multi-threaded worker verticles has been removed. The recommended replacement is to use Vertx.executeBlocking() with an unordered queue. [1]
  • HTTP: The synchronous HttpServerRequest.upgrade() method has been removed and replaced by the asynchronous HttpServerRequest.toWebSocket() method. [1]
  • EventBus: Some request-response send methods have been removed from the EventBus. [1]
• Dependency Changes: The jackson-databind library is no longer a default dependency. If your application performs object mapping from JSON, you must now explicitly add it to your project's dependencies. [1, 5]

Recommendation: This upgrade requires a thorough review and refactoring of the application code. Developers must consult the official migration guide to address the numerous breaking changes across the asynchronous programming model, HTTP layer, and other core components.

Source: Vert.x 3 to 4 Migration Guide

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

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