Page Speed Optimization Libraries  1.7.30.4
net/instaweb/http/public/simulated_delay_fetcher.h
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00001 /*
00002  * Copyright 2014 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_HTTP_PUBLIC_SIMULATED_DELAY_FETCHER_H_
00020 #define NET_INSTAWEB_HTTP_PUBLIC_SIMULATED_DELAY_FETCHER_H_
00021 
00022 #include <map>
00023 
00024 #include "net/instaweb/http/public/url_async_fetcher.h"
00025 #include "net/instaweb/util/public/basictypes.h"
00026 #include "net/instaweb/util/public/string.h"
00027 #include "net/instaweb/util/public/string_util.h"
00028 #include "pagespeed/kernel/base/file_system.h"
00029 #include "pagespeed/kernel/base/scoped_ptr.h"
00030 #include "pagespeed/kernel/base/thread_annotations.h"
00031 
00032 namespace net_instaweb {
00033 
00034 class AbstractMutex;
00035 class AsyncFetch;
00036 class MessageHandler;
00037 class Scheduler;
00038 class ThreadSystem;
00039 class Timer;
00040 
00044 class SimulatedDelayFetcher : public UrlAsyncFetcher {
00045  public:
00047   static const char kPayload[];
00048 
00055   SimulatedDelayFetcher(ThreadSystem* thread_system,
00056                         Timer* timer,
00057                         Scheduler* scheduler,
00058                         MessageHandler* handler,
00059                         FileSystem* file_system,
00060                         StringPiece delay_map_path,
00061                         StringPiece request_log_path,
00062                         int request_log_flush_frequency);
00063 
00064   virtual ~SimulatedDelayFetcher();
00065 
00066   virtual void Fetch(const GoogleString& url,
00067                      MessageHandler* message_handler,
00068                      AsyncFetch* fetch);
00069 
00070  private:
00071   typedef std::map<GoogleString, int> DelayMap;
00072   void ProduceReply(AsyncFetch* fetch);
00073   void ParseDelayMap(StringPiece delay_map_path);
00074 
00075   Timer* timer_;
00076   Scheduler* scheduler_;
00077   MessageHandler* message_handler_;
00078   FileSystem* file_system_;
00079   DelayMap delays_ms_;
00080   int request_log_flush_frequency_;
00081 
00082   scoped_ptr<AbstractMutex> mutex_;
00083   int request_log_outstanding_ GUARDED_BY(mutex_.get());
00084   FileSystem::OutputFile* request_log_ PT_GUARDED_BY(mutex_.get());
00085 
00086   DISALLOW_COPY_AND_ASSIGN(SimulatedDelayFetcher);
00087 };
00088 
00089 }  
00090 
00091 #endif  ///< NET_INSTAWEB_HTTP_PUBLIC_SIMULATED_DELAY_FETCHER_H_
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