[Micronaut Native Picocli] How to disable debug logs from io.micronaut?

[Nahuel92]

Hi there!

I built a small CLI tool that works well in both Jar/native mode. I use the Micronaut Launch to create a CLI app with Picocli, and selected GraalVM. I had to manually add the Maven plugin because the generated project didn't add it for me.

The only thing that's driving me crazy is that, for some unknown reason, the native binary shows debug logs from io.micronaut.* packages when I run it (which ends up burying my CLI output), and I don't know how to turn it off.

I built it under Windows, in case that matters.

Output example

I only show a very tiny portion of the output, because it logs a lot:

11:13:48.468 [main] DEBUG io.micronaut.serde.ObjectMappers$ObjectMapperContext$1 -- Environment deduction is using the default of: true
11:13:48.469 [main] DEBUG io.micronaut.serde.ObjectMappers$ObjectMapperContext$1 -- Starting environment io.micronaut.serde.ObjectMappers$ObjectMapperContext$1@5f5eeb44 for active names []
11:13:48.469 [main] DEBUG io.micronaut.context.DefaultBeanContext -- Finding candidate beans for type: DefaultEnvironment
11:13:48.469 [main] DEBUG io.micronaut.context.DefaultBeanContext -- No bean candidates found for type: DefaultEnvironment
11:13:48.470 [main] DEBUG io.micronaut.context.DefaultBeanContext -- Starting BeanContext
11:13:48.472 [main] DEBUG io.micronaut.context.DefaultBeanContext -- Finding candidate beans for type: BeanCreatedEventListener
11:13:48.472 [main] DEBUG io.micronaut.context.DefaultBeanContext -- No bean candidates found for type: BeanCreatedEventListener
11:13:48.472 [main] DEBUG io.micronaut.context.DefaultBeanContext -- Finding candidate beans for type: BeanInitializedEventListener
11:13:48.472 [main] DEBUG io.micronaut.context.DefaultBeanContext -- No bean candidates found for type: BeanInitializedEventListener
11:13:48.473 [main] DEBUG io.micronaut.context.DefaultBeanContext -- Resolving beans for type: io.micronaut.core.convert.TypeConverter
11:13:48.473 [main] DEBUG io.micronaut.context.DefaultBeanContext -- Finding candidate beans for type: TypeConverter
11:13:48.473 [main] DEBUG io.micronaut.context.DefaultBeanContext -- No bean candidates found for type: TypeConverter
11:13:48.473 [main] DEBUG io.micronaut.context.DefaultBeanContext -- Resolving beans for type: io.micronaut.core.convert.TypeConverterRegistrar
11:13:48.473 [main] DEBUG io.micronaut.context.DefaultBeanContext -- Finding candidate beans for type: TypeConverterRegistrar
11:13:48.473 [main] DEBUG io.micronaut.context.DefaultBeanContext -- No bean candidates found for type: TypeConverterRegistrar
11:13:48.474 [main] DEBUG io.micronaut.context.DefaultBeanContext -- BeanContext Started.

Can someone help me please?
Thank you in advance!

[Nahuel92]

Ok, I used a workaround to remove the debug logging. The downside is that this will get rid of all logs, not only the debug ones from io.micronaut.*

pom.xml

Replace:

<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-classic</artifactId>
    <scope>runtime</scope>
</dependency>

With:

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-nop</artifactId>
    <version>2.0.16</version>
    <scope>runtime</scope>
</dependency>