| /* |
| * 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. |
| */ |
| |
| // Author: pulkitg@google.com (Pulkit Goyal) |
| // |
| // Composes two property stores to form a two level property cache storage |
| // system. |
| // TwoLevelPropertyStore::Get() also has capability to fast return the results |
| // (i.e. results of the primary property store lookup) if cancel is called. |
| #ifndef PAGESPEED_OPT_HTTP_TWO_LEVEL_PROPERTY_STORE_H_ |
| #define PAGESPEED_OPT_HTTP_TWO_LEVEL_PROPERTY_STORE_H_ |
| |
| #include "pagespeed/kernel/base/basictypes.h" |
| #include "pagespeed/kernel/base/string.h" |
| #include "pagespeed/opt/http/abstract_property_store_get_callback.h" |
| #include "pagespeed/opt/http/property_cache.h" |
| #include "pagespeed/opt/http/property_store.h" |
| |
| namespace net_instaweb { |
| |
| class PropertyCacheValues; |
| class ThreadSystem; |
| |
| class TwoLevelPropertyStore : public PropertyStore { |
| public: |
| TwoLevelPropertyStore(PropertyStore* primary_property_store, |
| PropertyStore* secondary_propery_store, |
| ThreadSystem* thread_system); |
| virtual ~TwoLevelPropertyStore(); |
| |
| // It issues a lookup on the primary_property_store and lookup on |
| // secondary_property_store will only be issued if properties are not |
| // available in primary_property_store and lookup is not yet cancelled. |
| 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); |
| |
| // Write to both the storage system for the given key. |
| 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); |
| |
| virtual GoogleString Name() const; |
| |
| private: |
| PropertyStore* primary_property_store_; |
| PropertyStore* secondary_property_store_; |
| ThreadSystem* thread_system_; |
| DISALLOW_COPY_AND_ASSIGN(TwoLevelPropertyStore); |
| }; |
| |
| } // namespace net_instaweb |
| #endif // PAGESPEED_OPT_HTTP_TWO_LEVEL_PROPERTY_STORE_H_ |