property_store.h

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/*
 * Copyright 2013 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_OPT_HTTP_PROPERTY_STORE_H_
#define PAGESPEED_OPT_HTTP_PROPERTY_STORE_H_

#include "pagespeed/kernel/base/basictypes.h"
#include "pagespeed/kernel/base/callback.h"
#include "pagespeed/kernel/base/scoped_ptr.h"
#include "pagespeed/kernel/base/string.h"
#include "pagespeed/opt/http/abstract_property_store_get_callback.h"
#include "pagespeed/opt/http/property_cache.h"

namespace net_instaweb {

class AbstractMutex;
class PropertyCacheValues;
class PropertyValueProtobuf;
class Statistics;
class Timer;

class PropertyStore {
 public:
  typedef Callback1<bool> BoolCallback;
  PropertyStore();
  virtual ~PropertyStore();

  virtual void Get(
      const GoogleString& url,
      const GoogleString& options_signature_hash,
      const GoogleString& cache_key_suffix,
      const PropertyCache::CohortVector& cohort_list,
      PropertyPage* page,
      BoolCallback* done,
      AbstractPropertyStoreGetCallback** callback) = 0;

  virtual void Put(
      const GoogleString& url,
      const GoogleString& options_signature_hash,
      const GoogleString& cache_key_suffix,
      const PropertyCache::Cohort* cohort,
      const PropertyCacheValues* values,
      BoolCallback* done) = 0;

  bool enable_get_cancellation() { return enable_get_cancellation_; }
  void set_enable_get_cancellation(bool x) { enable_get_cancellation_ = x; }

  virtual GoogleString Name() const = 0;

 private:
  bool enable_get_cancellation_;
  
};

class PropertyStoreGetCallback : public AbstractPropertyStoreGetCallback {
 public:
  typedef Callback1<bool> BoolCallback;
  PropertyStoreGetCallback(
      AbstractMutex* mutex,
      PropertyPage* page,
      bool is_cancellable,
      BoolCallback* done,
      Timer* timer);
  virtual ~PropertyStoreGetCallback();

  static void InitStats(Statistics* statistics);

  virtual void FastFinishLookup();
  virtual void DeleteWhenDone();
  bool AddPropertyValueProtobufToPropertyPage(
      const PropertyCache::Cohort* cohort,
      const PropertyValueProtobuf& pcache_value,
      int64 min_write_timestamp_ms);

  void Done(bool success);

 protected:
  AbstractMutex* mutex() { return mutex_.get(); }
  PropertyPage* page() { return page_; }

 private:
  scoped_ptr<AbstractMutex> mutex_;
  PropertyPage* page_;
  const bool is_cancellable_;
  BoolCallback* done_;
  bool delete_when_done_;
  bool done_called_;
  Timer* timer_;
  int64 fast_finish_time_ms_;

  
};

}  
#endif