/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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 org.apache.commons.jcs.jcache.cdi;
  
  import java.io.Serializable;
  
  import javax.annotation.Priority;
  import javax.cache.Cache;
  import javax.cache.annotation.CacheKeyInvocationContext;
  import javax.cache.annotation.CacheRemove;
  import javax.cache.annotation.CacheResolver;
  import javax.cache.annotation.CacheResolverFactory;
  import javax.cache.annotation.GeneratedCacheKey;
  import javax.inject.Inject;
  import javax.interceptor.AroundInvoke;
  import javax.interceptor.Interceptor;
  import javax.interceptor.InvocationContext;
  
  @CacheRemove
  @Interceptor
  @Priority(/*LIBRARY_BEFORE*/1000)
  public class CacheRemoveInterceptor implements Serializable
  {
      @Inject
      private CDIJCacheHelper helper;
  
      @AroundInvoke
      public Object cache(final InvocationContext ic) throws Throwable
      {
          final CDIJCacheHelper.MethodMeta methodMeta = helper.findMeta(ic);
  
          final String cacheName = methodMeta.getCacheRemoveCacheName();
  
          final CacheResolverFactory cacheResolverFactory = methodMeta.getCacheRemoveResolverFactory();
          final CacheKeyInvocationContext<CacheRemove> context = new CacheKeyInvocationContextImpl<CacheRemove>(
                  ic, methodMeta.getCacheRemove(), cacheName, methodMeta);
          final CacheResolver cacheResolver = cacheResolverFactory.getCacheResolver(context);
          final Cache<Object, Object> cache = cacheResolver.resolveCache(context);
  
          final GeneratedCacheKey cacheKey = methodMeta.getCacheRemoveKeyGenerator().generateCacheKey(context);
          final CacheRemove cacheRemove = methodMeta.getCacheRemove();
          final boolean afterInvocation = methodMeta.isCacheRemoveAfter();
  
          if (!afterInvocation)
          {
              cache.remove(cacheKey);
          }
  
          final Object result;
          try
          {
              result = ic.proceed();
          }
          catch (final Throwable t)
          {
              if (afterInvocation)
              {
                  if (helper.isIncluded(t.getClass(), cacheRemove.evictFor(), cacheRemove.noEvictFor()))
                  {
                      cache.remove(cacheKey);
                  }
              }
  
              throw t;
          }
  
          if (afterInvocation)
          {
              cache.remove(cacheKey);
          }
  
          return result;
      }
  }