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);
        }
      }
    }
Example #2
0
 public static void accept(URLClassLoader ucl, Visitor visitor) throws IOException {
   accept(ucl, ucl.getURLs(), visitor);
 }