content: /*
   * Copyright 2010 Proofpoint, Inc.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package io.airlift.bootstrap;
  
  import com.google.common.collect.ArrayListMultimap;
  import com.google.common.collect.Multimap;
  import jakarta.annotation.PostConstruct;
  import jakarta.annotation.PreDestroy;
  
  import java.lang.annotation.Annotation;
  import java.lang.reflect.Method;
  import java.util.Collection;
  import java.util.HashSet;
  import java.util.Set;
  
  import static java.lang.String.format;
  
  class LifeCycleMethods
  {
      private final Multimap<Class<? extends Annotation>, Method> methodMap = ArrayListMultimap.create();
  
      LifeCycleMethods(Class<?> clazz)
      {
          addLifeCycleMethods(clazz, new HashSet<>(), new HashSet<>());
      }
  
      boolean hasFor(Class<? extends Annotation> annotation)
      {
          return methodMap.containsKey(annotation);
      }
  
      Collection<Method> methodsFor(Class<? extends Annotation> annotation)
      {
          return methodMap.get(annotation);
      }
  
      private void addLifeCycleMethods(Class<?> clazz, Set<String> usedConstructNames, Set<String> usedDestroyNames)
      {
          if (clazz == null) {
              return;
          }
  
          for (Method method : clazz.getDeclaredMethods()) {
              if (method.isSynthetic() || method.isBridge()) {
                  continue;
              }
  
              processMethod(method, PostConstruct.class, usedConstructNames);
              processMethod(method, PreDestroy.class, usedDestroyNames);
          }
  
          addLifeCycleMethods(clazz.getSuperclass(), usedConstructNames, usedDestroyNames);
          for (Class<?> face : clazz.getInterfaces()) {
              addLifeCycleMethods(face, usedConstructNames, usedDestroyNames);
          }
      }
  
      private void processMethod(Method method, Class<? extends Annotation> annotationClass, Set<String> usedSet)
      {
          if (method.isAnnotationPresent(annotationClass)) {
              if (!usedSet.contains(method.getName())) {
                  if (method.getParameterTypes().length != 0) {
                      throw new UnsupportedOperationException(format("@PostConstruct/@PreDestroy methods cannot have arguments: %s",
                              method.getDeclaringClass().getName() + "." + method.getName() + "(...)"));
                  }
  
                  method.setAccessible(true);
                  usedSet.add(method.getName());
                  methodMap.put(annotationClass, method);
              }
          }
      }
  }
  