delegating_cache_callback.h

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/*
 * Copyright 2012 Google 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.
 */


#ifndef PAGESPEED_KERNEL_CACHE_DELEGATING_CACHE_CALLBACK_H_
#define PAGESPEED_KERNEL_CACHE_DELEGATING_CACHE_CALLBACK_H_

#include "pagespeed/kernel/base/basictypes.h"
#include "pagespeed/kernel/base/string.h"
#include "pagespeed/kernel/cache/cache_interface.h"

namespace net_instaweb {

class DelegatingCacheCallback : public CacheInterface::Callback {
 public:
  explicit DelegatingCacheCallback(CacheInterface::Callback* callback);
  virtual ~DelegatingCacheCallback();

  virtual bool ValidateCandidate(const GoogleString& key,
                                 CacheInterface::KeyState state);

  virtual void Done(CacheInterface::KeyState state);

 private:
  CacheInterface::Callback* callback_;
  bool validate_candidate_called_;

  
};

}  

#endif