private synchronized void registerActorClasses() {
if (actorClasses.isEmpty()) {
try {
final ClassLoader classLoader =
userClassLoader != null ? userClassLoader : this.getClass().getClassLoader();
ClassLoaderUtil.accept(
(URLClassLoader) classLoader,
new ClassLoaderUtil.Visitor() {
@Override
public final void visit(String resource, URL url, ClassLoader cl) {
if (packagePrefixes != null) {
boolean found = false;
for (final String packagePrefix : packagePrefixes) {
if (packagePrefix != null
&& resource.startsWith(packagePrefix.replace('.', '/'))) {
found = true;
break;
}
}
if (!found) return;
}
if (!ClassLoaderUtil.isClassFile(resource)) return;
final String className = ClassLoaderUtil.resourceToClass(resource);
try (final InputStream is = cl.getResourceAsStream(resource)) {
if (AnnotationUtil.hasClassAnnotation(WebActor.class, is))
registerWebActor(cl.loadClass(className));
} catch (final IOException | ClassNotFoundException e) {
log.error(
"Exception while scanning class " + className + " for WebActor annotation",
e);
throw new RuntimeException(e);
}
}
private void registerWebActor(Class<?> c) {
actorClasses.add(c);
}
});
} catch (final IOException e) {
log.error("IOException while scanning classes for WebActor annotation", e);
}
}
}