I'm trying to annotate all public methods in my class annotated with my custom annotation using Byte Buddy.
I've already tried to use the code from the comment here: Add method annotation at runtime with Byte Buddy
Java version: 1.8. The app is for testing microservices. Application is running via Spring Boot. I try to annotate all needed methods in my app with annotation with value depending on method name.
<dependency>
<groupId>org.reflections</groupId>
<artifactId>reflections</artifactId>
<version>0.9.11</version>
</dependency>
<dependency>
<groupId>net.bytebuddy</groupId>
<artifactId>byte-buddy</artifactId>
<version>1.10.1</version>
</dependency>
<dependency>
<groupId>net.bytebuddy</groupId>
<artifactId>byte-buddy-agent</artifactId>
<version>1.10.1</version>
</dependency>
Working method:
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.Arrays;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
import io.qameta.allure.Step;
import net.bytebuddy.ByteBuddy;
import net.bytebuddy.asm.MemberAttributeExtension;
import net.bytebuddy.description.annotation.AnnotationDescription;
import net.bytebuddy.matcher.ElementMatchers;
import org.reflections.Reflections;
import org.reflections.scanners.ResourcesScanner;
import org.reflections.scanners.SubTypesScanner;
import org.reflections.util.ClasspathHelper;
import org.reflections.util.ConfigurationBuilder;
import org.reflections.util.FilterBuilder;
public class StackOverflowExample {
private static final String REGEX = "some-package";
public void configureAnnotation() {
Reflections reflections = getReflections();
Set<Class<?>> allClasses = reflections.getSubTypesOf(Object.class);
allClasses.forEach(clazz -> {
if (clazz.isAnnotationPresent(ConfigureSteps.class)) {
List<Method> publicMethods = Arrays.stream(clazz.getDeclaredMethods())
.filter(method -> Modifier.isPublic(method.getModifiers()))
.collect(Collectors.toList());
AnnotationDescription annotationDescription = AnnotationDescription.Builder.ofType(Step.class)
.define("value", "new annotation")
.build();
publicMethods.forEach(method -> new ByteBuddy().redefine(clazz)
.visit(new MemberAttributeExtension.ForMethod()
.annotateMethod(annotationDescription)
.on(ElementMatchers.anyOf(method)))
.make());
}
});
}
private Reflections getReflections() {
return new Reflections(new ConfigurationBuilder().setScanners(new SubTypesScanner(false), new ResourcesScanner())
.addUrls(ClasspathHelper.forJavaClassPath())
.filterInputsBy(new FilterBuilder().include(REGEX)));
}
}
I call configureAnnotation method before all the tests using JUnit @BeforeAll annotation. Method is invoked without issues but methods in my class with ConfigureSteps annotation aren't annotated with Step annotation. What is the problem? Or may be I should build Agent like it is in tutorial here: http://bytebuddy.net/#/tutorial And in this case what way should I override transform method?
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