Example of C language execution from Quarkus

ExampleResource.java

package net.quarkify.cpp;

import io.quarkus.runtime.StartupEvent;
import org.graalvm.polyglot.Context;
import org.graalvm.polyglot.Source;
import org.graalvm.polyglot.Value;

import javax.enterprise.event.Observes;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import java.io.File;
import java.io.IOException;
import java.net.URL;

@Path("/hello")
public class ExampleResource {
    private Value helloMethod;

    public void onStart(@Observes StartupEvent se) {
        new Thread() {{
            final URL drawImage = getClass().getClassLoader().getResource("example");
            Context polyglot = Context.newBuilder().allowAllAccess(true).build();
            Source source = null;
            try {
                source = Source.newBuilder("llvm", drawImage).build();
            } catch (IOException e) {
                e.printStackTrace();
            }
            helloMethod = polyglot.eval(source);
        }}.start();
    }

    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String executeHello() throws IOException {
        helloMethod.execute();
        return "See terminal output :)";
    }
}