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Micronaut Platform 4.8.0

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@sdelamo sdelamo released this 01 Apr 09:20
· 1 commit to 4.8.x since this release
v4.8.0
0076563

Micronaut Core Improvements

SourceGen integration

Micronaut Core 4.8.x has rewritten some of its internals leveraging Micronaut SourceGen. For example, Micronaut SourceGen powers bytecode generation of internal metadata and expressions.

Dependency Injection Debugging

Micronaut 4.8.0 allows you to activate dependency injection tracing to help you understand what Micronaut is doing at startup and when a particular bean is created.

@Client definitionType member

definitionType, a new member of the @Client annotation, helps in scenarios where you want to share an interface between client and server.

Bean Mappers Merging

Bean Mappers support merging:

@Introspected
record ChristmasPresent(
    String packagingColor,
    String type,
    Float weight,
    String greetingCard
) {
}

@Introspected
record PresentPackaging(
    Float weight,
    String color
) {
}

@Introspected
record Present(
    Float weight,
    String type
) {
}
public interface ChristmasMappers {
    @Mapping(from = "packaging.color", to = "packagingColor")
    @Mapping(from = "#{packaging.weight + present.weight}", to = "weight")
    @Mapping(from = "#{'Merry christmas'}", to = "greetingCard")
    ChristmasPresent merge(PresentPackaging packaging, Present present);

}

Liveness Probe for Deadlocked Threads

Thanks to a community contribution, Micronaut 4.8.0 ships a new liveness probe that uses the ThreadMXBean to check for deadlocked threads.

Improved Kubernetes Integration

The Micronaut Kubernetes Client OpenApi is a Kubernetes client that uses Micronaut Netty HTTP Client and the generated APIs and modules from the OpenApi Spec of the official Java client library for Kubernetes.
Advantages of this client over the official Java client library for Kubernetes:

  • No extra dependencies needed (OkHttp, Bouncy Castle, Kotlin, etc.)
  • Unified configuration with Micronaut HTTP client
  • Support for plugging in filters
  • Native Image compatibility

Runtimes

Update to Jetty 12.

Jetty 11 contains an open CVE 2024-6763. That CVE is only addressed in Jetty 12. Because of that, we did a major upgrade of Micronaut Servlet updating to Jetty 12.0.18, Tomcat 11.0.5, and Undertow 2.3.18.Final.

Modules such as io.micronaut.aws:micronaut-function-aws-test, io.micronaut.gcp:micronaut-gcp-function-http-test, io.micronaut.azure:micronaut-azure-function-http-test, and io.micronaut.oraclecloud:micronaut-oraclecloud-function-http-test allow you to test and run during development your serverless HTTP triggered function as if you were using a runtime such as netty. We migrated these modules to use a built-in Java HTTP server instead of relying on a Jetty 11 bridge.

Runtime based on Built-In Java HTTP Server

This release introduces a new Server runtime based on the Built-In Java HTTP Server. It is now possible to have a Micronaut Application leveraging the built-in HTTP Server and HTTP Client available in Java without any extra dependencies.

Tracing, Observation, and Distributed Configuration

Micronaut Tracing updates to OpenTelemetry 1.48.0.

Micronaut Micrometer adds:

Micronaut Discovery Client allows you to create a Consult watch to detect distributed configuration changes.

Build and Source Generation

Micronaut Gradle Plugins

Update the Micronaut Gradle Plugins version to use the latest version (as of this writing 4.5.1)

Generation of Sources from a JSON Schema

Source Generation

Persistence

  • Micronaut SQL updates ojdbc to 23.7.0.25.01, MariaDB to 3.5.1, and MySQL Connector to 9.2.0, Hikari to 6.2.1, and Tomcat JDBC to 11.0.5.
  • Micronaut Coherence 5.x updates to Coherence 25.03.

Database Migration

Cloud

Reactive Libraries

Persistence

Security

  • Micronaut Security improves Oracle Cloud Identity Domain OpenID Connect integration and it adds support for the end-session endpoint when using Microsoft login.

Miscellaneous

Assets 4
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