Protobuf GraalVM Feature

Simple library to register protobuf generated classes for runtime reflection.

More details on the topic can be found here

Content

• Usage
• Configuration

Usage

1) Add jitpack.io repository

Gradle (Groovy)

repositories {
  maven { url 'https://jitpack.io' }
}

Gradle (Kotlin):

repositories {
  maven { url = uri("https://jitpack.io") }
}

Maven

<repositories>
	<repository>
	    <id>jitpack.io</id>
	    <url>https://jitpack.io</url>
	</repository>
</repositories>

2) Add dependency into your project:

Gradle (Groovy)

implementation 'com.github.ricantech:protobuf-graalvm-feature:${version}'

Gradle (Kotlin):

implementation("com.github.ricantech:protobuf-graalvm-feature:${version}")

Maven

<dependency>
    <groupId>com.github.ricantech</groupId>
    <artifactId>protobuf-graalvm-feature</artifactId>
    <version>${version}</version>
</dependency>

That's it

Feature should be auto-registered thanks to native-image.properties In case of any troubles, you can try to register the feature manually with:

--features=io.github.ricantech.ProtobufFeature

Configuration

By default, all classes which extends com.google.protobuf.GeneratedMessageV3 and com.google.protobuf.GeneratedMessageV3.Builder are registered for runtime reflection.

If you need only subset of the generated classes, you can create file protobug-packages.properties file under folder resources/features and define packages to be scanned for the generated classes.

Example file can be found here - At this case we would only register classes within package.a and package.b