/*
    * 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 org.esigate.cache;
  
  import java.io.IOException;
  import java.util.Properties;
  
  import org.apache.http.client.cache.HttpCacheEntry;
  import org.apache.http.client.cache.HttpCacheStorage;
  import org.apache.http.client.cache.HttpCacheUpdateCallback;
  import org.apache.http.client.cache.HttpCacheUpdateException;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public abstract class CacheStorage implements HttpCacheStorage {
      private static final Logger LOG = LoggerFactory.getLogger(CacheStorage.class);
  
      public abstract void init(Properties properties);
  
      private HttpCacheStorage impl;
  
      @Override
      public void putEntry(String key, HttpCacheEntry entry) throws IOException {
          LOG.debug("putEntry({},{})", key, entry);
          impl.putEntry(key, entry);
      }
  
      @Override
      public HttpCacheEntry getEntry(String key) throws IOException {
          LOG.debug("getEntry({})", key);
          return impl.getEntry(key);
      }
  
      @Override
      public void removeEntry(String key) throws IOException {
          LOG.debug("removeEntry({})", key);
          impl.removeEntry(key);
  
      }
  
      @Override
      public void updateEntry(String key, HttpCacheUpdateCallback callback) throws IOException, HttpCacheUpdateException {
          LOG.debug("updateEntry({},{})", key, callback);
          impl.updateEntry(key, callback);
      }
  
      public void setImpl(HttpCacheStorage impl) {
          this.impl = impl;
      }
  
  }