Page Speed Optimization Libraries
1.8.31.2
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00001 /* 00002 * Copyright 2012 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 00023 00024 #ifndef NET_INSTAWEB_REWRITER_PUBLIC_EXPERIMENT_UTIL_H_ 00025 #define NET_INSTAWEB_REWRITER_PUBLIC_EXPERIMENT_UTIL_H_ 00026 00027 #include "net/instaweb/util/public/basictypes.h" 00028 #include "net/instaweb/util/public/string.h" 00029 #include "net/instaweb/util/public/string_util.h" 00030 00031 namespace net_instaweb { 00032 00033 class RequestHeaders; 00034 class ResponseHeaders; 00035 class RewriteOptions; 00036 00037 namespace experiment { 00038 00039 enum ExperimentState { 00048 kForceNoExperiment = -2, 00051 kExperimentNotSet = -1, 00055 kNoExperiment = 0, 00056 }; 00057 00059 const char kExperimentCookie[] = "PageSpeedExperiment"; 00060 const char kExperimentCookiePrefix[] = "PageSpeedExperiment="; 00061 00064 bool GetExperimentCookieState(const RequestHeaders& headers, int* value); 00065 00068 void RemoveExperimentCookie(RequestHeaders *headers); 00069 00073 void SetExperimentCookie(ResponseHeaders* headers, int state, 00074 const StringPiece& url, int64 expiration_time_ms); 00075 00077 int DetermineExperimentState(const RewriteOptions* options); 00078 00080 bool AnyActiveExperiments(const RewriteOptions* options); 00081 00084 GoogleString ExperimentStateToCookieString(int state); 00085 00087 int CookieStringToState(const StringPiece& cookie_str); 00088 00089 } 00090 00091 } 00092 00093 #endif ///< NET_INSTAWEB_REWRITER_PUBLIC_EXPERIMENT_UTIL_H_