Page Speed Optimization Libraries
1.5.27.2
|
00001 /* 00002 * Copyright 2013 Google Inc. 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http:///www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 00018 00019 #ifndef NET_INSTAWEB_UTIL_PUBLIC_COMPRESSED_CACHE_H_ 00020 #define NET_INSTAWEB_UTIL_PUBLIC_COMPRESSED_CACHE_H_ 00021 00022 #include "net/instaweb/util/public/basictypes.h" 00023 #include "net/instaweb/util/public/cache_interface.h" 00024 #include "net/instaweb/util/public/string.h" 00025 #include "pagespeed/kernel/base/string_util.h" 00026 00027 namespace net_instaweb { 00028 00029 class Histogram; 00030 class SharedString; 00031 class Statistics; 00032 class Variable; 00033 00035 class CompressedCache : public CacheInterface { 00036 public: 00038 CompressedCache(CacheInterface* cache, Statistics* stats); 00039 virtual ~CompressedCache(); 00040 00041 static void InitStats(Statistics* stats); 00042 00043 virtual void Get(const GoogleString& key, Callback* callback); 00044 virtual void Put(const GoogleString& key, SharedString* value); 00045 virtual void Delete(const GoogleString& key); 00046 virtual GoogleString Name() const { return FormatName(cache_->Name()); } 00047 static GoogleString FormatName(StringPiece cache); 00048 virtual CacheInterface* Backend() { return cache_; } 00049 virtual bool IsBlocking() const { return cache_->IsBlocking(); } 00050 virtual bool IsHealthy() const; 00051 virtual void ShutDown(); 00052 00055 int64 CorruptPayloads() const; 00056 00059 int64 OriginalSize() const; 00060 00063 int64 CompressedSize() const; 00064 00065 private: 00066 CacheInterface* cache_; 00067 Histogram* compressed_cache_savings_; 00068 Variable* corrupt_payloads_; 00069 Variable* original_size_; 00070 Variable* compressed_size_; 00071 00072 DISALLOW_COPY_AND_ASSIGN(CompressedCache); 00073 }; 00074 00075 } 00076 00077 #endif ///< NET_INSTAWEB_UTIL_PUBLIC_COMPRESSED_CACHE_H_