Helidon MP fails to list @Grpc annotated services on gradle

[Baron1Pampa]

Environment Details

• Helidon Version: 3.2.2
• Helidon MP
• JDK version: corretto-17
• OS: macOS Sonoma 1435
• Docker version (if applicable):

---

Problem Summary

I'm trying to run grpc server with Helidon MP using gradle(this is important). When trying to run basic example using mvn, everything works corrects

Problem Description

• Service Code (taken from helidon example here )
• Main Class code:

public class MainClass {
    public static void main(String[] args) {
        Server.builder().build().start();
    }
}

• pom.xml

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://maven.apache.org/POM/4.0.0"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <version>1.0-SNAPSHOT</version>
    <artifactId>copy-of-microprofile-grpc</artifactId>
    <name>Dummy grpc Server</name>
    <dependencies>
        <dependency>
            <groupId>io.helidon.microprofile.bundles</groupId>
            <artifactId>helidon-microprofile</artifactId>
            <version>3.2.2</version>
        </dependency>
        <dependency>
            <groupId>io.helidon.microprofile.grpc</groupId>
            <artifactId>helidon-microprofile-grpc-server</artifactId>
            <version>3.2.2</version>
        </dependency>
    </dependencies>
</project>

• gradle.build.kts

plugins {
    id("java")
    application
}

group = "org.example"
version = "1.0-SNAPSHOT"

repositories {
    mavenCentral()
}

dependencies {
    implementation("io.helidon.microprofile.bundles:helidon-microprofile:3.2.2")
    implementation("io.helidon.microprofile.grpc:helidon-microprofile-grpc-server:3.2.2")
}

application {
    mainClass.set("implicit.MainClass")
}

Output when running the example with mvn:

[Mon Jun 24 14:50:24 IDT 2024] INFO: io.helidon.common.LogConfig doConfigureLogging - Logging at initialization configured using classpath: /logging.properties 
[Mon Jun 24 14:50:24 IDT 2024] INFO: org.jboss.weld.bootstrap.WeldStartup <clinit> - WELD-000900: 4.0.3 (Final) 
[Mon Jun 24 14:50:25 IDT 2024] FINE: io.helidon.microprofile.config.ConfigCdiExtension <init> - ConfigCdiExtension instantiated 
[Mon Jun 24 14:50:25 IDT 2024] INFO: io.helidon.microprofile.openapi.OpenApiCdiExtension <init> - OpenAPI support could not locate the Jandex index file META-INF/jandex.idx so will build an in-memory index.
This slows your app start-up and, depending on CDI configuration, might omit some type information needed for a complete OpenAPI document.
Consider using the Jandex maven plug-in during your build to create the index and add it to your app. 
[Mon Jun 24 14:50:25 IDT 2024] FINE: io.helidon.microprofile.config.ConfigCdiExtension <init> - ConfigCdiExtension instantiated 
[Mon Jun 24 14:50:25 IDT 2024] INFO: org.jboss.weld.environment.deployment.discovery.DiscoveryStrategyFactory create - WELD-ENV-000020: Using jandex for bean discovery 
[Mon Jun 24 14:50:25 IDT 2024] INFO: org.jboss.weld.bootstrap.WeldStartup startContainer - WELD-000101: Transactional services not available. Injection of @Inject UserTransaction not available. Transactional observers will be invoked synchronously. 
[Mon Jun 24 14:50:25 IDT 2024] INFO: org.jboss.weld.event.ExtensionObserverMethodImpl checkRequiredTypeAnnotations - WELD-000411: Observer method [BackedAnnotatedMethod] private io.helidon.microprofile.openapi.OpenApiCdiExtension.processAnnotatedType(@Observes ProcessAnnotatedType<X>) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds. 
[Mon Jun 24 14:50:25 IDT 2024] INFO: org.jboss.weld.event.ExtensionObserverMethodImpl checkRequiredTypeAnnotations - WELD-000411: Observer method [BackedAnnotatedMethod] public org.glassfish.jersey.ext.cdi1x.internal.ProcessAllAnnotatedTypes.processAnnotatedType(@Observes ProcessAnnotatedType<?>, BeanManager) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds. 
[Mon Jun 24 14:50:26 IDT 2024] INFO: io.helidon.tracing.tracerresolver.TracerResolverBuilder build - TracerResolver not configured, tracing is disabled 
[Mon Jun 24 14:50:26 IDT 2024] INFO: io.helidon.microprofile.security.SecurityCdiExtension registerSecurity - Authentication provider is missing from security configuration, but security extension for microprofile is enabled (requires providers configuration at key security.providers). Security will not have any valid authentication provider 
[Mon Jun 24 14:50:26 IDT 2024] INFO: io.helidon.microprofile.security.SecurityCdiExtension registerSecurity - Authorization provider is missing from security configuration, but security extension for microprofile is enabled (requires providers configuration at key security.providers). ABAC provider is configured for authorization. 
[Mon Jun 24 14:50:27 IDT 2024] INFO: io.helidon.grpc.server.GrpcServerImpl deploy - gRPC server [test.server]: registered service [StringService] 
[Mon Jun 24 14:50:27 IDT 2024] INFO: io.helidon.grpc.server.GrpcServerImpl deploy - gRPC server [test.server]:       with methods [StringService/echo] 
[Mon Jun 24 14:50:27 IDT 2024] INFO: io.helidon.grpc.server.GrpcServerImpl deploy - gRPC server [test.server]:                    [StringService/join] 
[Mon Jun 24 14:50:27 IDT 2024] INFO: io.helidon.grpc.server.GrpcServerImpl deploy - gRPC server [test.server]:                    [StringService/lower] 
[Mon Jun 24 14:50:27 IDT 2024] INFO: io.helidon.grpc.server.GrpcServerImpl deploy - gRPC server [test.server]:                    [StringService/split] 
[Mon Jun 24 14:50:27 IDT 2024] INFO: io.helidon.grpc.server.GrpcServerImpl deploy - gRPC server [test.server]:                    [StringService/upper] 

[Mon Jun 24 14:50:27 IDT 2024] INFO: io.helidon.grpc.server.GrpcServerImpl start - gRPC server [test.server]: listening on port 1408 (TLS=false) 
[Mon Jun 24 14:50:27 IDT 2024] INFO: io.helidon.microprofile.grpc.server.GrpcServerCdiExtension lambda$startServer$3 - gRPC server started on localhost:1408 (and all other host addresses) in 150 milliseconds.

Output when running with gradle:

[Mon Jun 24 15:14:01 IDT 2024] INFO: io.helidon.common.LogConfig doConfigureLogging - Logging at initialization configured using classpath: /logging.properties 
[Mon Jun 24 15:14:01 IDT 2024] INFO: org.jboss.weld.bootstrap.WeldStartup <clinit> - WELD-000900: 4.0.3 (Final) 
[Mon Jun 24 15:14:01 IDT 2024] INFO: io.helidon.microprofile.openapi.OpenApiCdiExtension <init> - OpenAPI support could not locate the Jandex index file META-INF/jandex.idx so will build an in-memory index.
This slows your app start-up and, depending on CDI configuration, might omit some type information needed for a complete OpenAPI document.
Consider using the Jandex maven plug-in during your build to create the index and add it to your app. 
[Mon Jun 24 15:14:01 IDT 2024] FINE: io.helidon.microprofile.config.ConfigCdiExtension <init> - ConfigCdiExtension instantiated 
[Mon Jun 24 15:14:01 IDT 2024] INFO: org.jboss.weld.environment.deployment.discovery.DiscoveryStrategyFactory create - WELD-ENV-000020: Using jandex for bean discovery 
[Mon Jun 24 15:14:01 IDT 2024] INFO: org.jboss.weld.bootstrap.WeldStartup startContainer - WELD-000101: Transactional services not available. Injection of @Inject UserTransaction not available. Transactional observers will be invoked synchronously. 
[Mon Jun 24 15:14:02 IDT 2024] INFO: org.jboss.weld.event.ExtensionObserverMethodImpl checkRequiredTypeAnnotations - WELD-000411: Observer method [BackedAnnotatedMethod] public org.glassfish.jersey.ext.cdi1x.internal.ProcessAllAnnotatedTypes.processAnnotatedType(@Observes ProcessAnnotatedType<?>, BeanManager) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds. 
[Mon Jun 24 15:14:02 IDT 2024] INFO: org.jboss.weld.event.ExtensionObserverMethodImpl checkRequiredTypeAnnotations - WELD-000411: Observer method [BackedAnnotatedMethod] private io.helidon.microprofile.openapi.OpenApiCdiExtension.processAnnotatedType(@Observes ProcessAnnotatedType<X>) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds. 
[Mon Jun 24 15:14:03 IDT 2024] INFO: io.helidon.tracing.tracerresolver.TracerResolverBuilder build - TracerResolver not configured, tracing is disabled 
[Mon Jun 24 15:14:03 IDT 2024] INFO: io.helidon.microprofile.security.SecurityCdiExtension registerSecurity - Authentication provider is missing from security configuration, but security extension for microprofile is enabled (requires providers configuration at key security.providers). Security will not have any valid authentication provider 
[Mon Jun 24 15:14:03 IDT 2024] INFO: io.helidon.microprofile.security.SecurityCdiExtension registerSecurity - Authorization provider is missing from security configuration, but security extension for microprofile is enabled (requires providers configuration at key security.providers). ABAC provider is configured for authorization. 
[Mon Jun 24 15:14:03 IDT 2024] INFO: io.helidon.grpc.server.GrpcServerImpl start - gRPC server [test.server]: listening on port 1111 (TLS=false) 
[Mon Jun 24 15:14:03 IDT 2024] INFO: io.helidon.microprofile.grpc.server.GrpcServerCdiExtension lambda$startServer$3 - gRPC server started on localhost:1111 (and all other host addresses) in 181 milliseconds. 

When running with gradle, grpc services are not listed

Is there any hidden dependency the need to be specified in gradle?