documentation/src/content/slf4j-knight.adoc

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= Arthur SLF4J Knights

Arthur Slf4j knight is responsible to force some SLF4j and SLF4J-JUL class initialization at build time.

== Coordinates

[source,xml]
----
<dependency>
  <groupId>org.apache.geronimo.arthur.knights</groupId>
  <artifactId>slf4j-knight</artifactId>
  <version>${arthur.version}</version>
</dependency>
----

== Usage

The `slf4j-knight` handles some build time initialization to make `slf4j-jdk14` working with graalvm compilation.


You must register the slf4j knight in `arthur-maven-plugin`:


[source,xml]
----
<plugin>
  <groupId>org.apache.geronimo.arthur</groupId>
  <artifactId>arthur-maven-plugin</artifactId>
  <version>${arthur.version}</version>
  <configuration>
    <main>org.company.Main</main>
    <graalExtensions>
      <graalExtension>slf4j</graalExtension>
    </graalExtensions>
  </configuration>
</plugin>
----

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