Page Speed Optimization Libraries  1.2.24.1
net/instaweb/automatic/public/proxy_interface.h
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00001 /*
00002  * Copyright 2011 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 
00026 
00027 #ifndef NET_INSTAWEB_AUTOMATIC_PUBLIC_PROXY_INTERFACE_H_
00028 #define NET_INSTAWEB_AUTOMATIC_PUBLIC_PROXY_INTERFACE_H_
00029 
00030 #include "net/instaweb/http/public/url_async_fetcher.h"
00031 #include "net/instaweb/util/public/basictypes.h"
00032 #include "net/instaweb/util/public/scoped_ptr.h"
00033 #include "net/instaweb/util/public/string.h"
00034 #include "net/instaweb/util/public/string_util.h"
00035 
00036 namespace net_instaweb {
00037 
00038 class AsyncFetch;
00039 class GoogleUrl;
00040 class MessageHandler;
00041 class ProxyFetchPropertyCallbackCollector;
00042 class ProxyFetchFactory;
00043 class ServerContext;
00044 class RewriteOptions;
00045 class Statistics;
00046 class TimedVariable;
00047 class Timer;
00048 
00050 class ProxyInterface : public UrlAsyncFetcher {
00051  public:
00052   ProxyInterface(const StringPiece& hostname, int port,
00053                  ServerContext* manager, Statistics* stats);
00054   virtual ~ProxyInterface();
00055 
00057   static void InitStats(Statistics* statistics);
00058 
00062   virtual void Fetch(const GoogleString& requested_url,
00063                      MessageHandler* handler,
00064                      AsyncFetch* async_fetch);
00065 
00068   void ProxyRequestCallback(
00069       bool is_resource_fetch,
00070       GoogleUrl* request_url,
00071       AsyncFetch* async_fetch,
00072       RewriteOptions* domain_options,
00073       RewriteOptions* query_options,
00074       MessageHandler* handler);
00075 
00077   bool IsWellFormedUrl(const GoogleUrl& url);
00078 
00079   static const char kBlinkRequestCount[];
00080   static const char kBlinkCriticalLineRequestCount[];
00081 
00083   virtual ProxyFetchPropertyCallbackCollector* InitiatePropertyCacheLookup(
00084       bool is_resource_fetch,
00085       const GoogleUrl& request_url,
00086       RewriteOptions* options,
00087       AsyncFetch* async_fetch);
00088 
00089  private:
00090   friend class ProxyInterfaceTest;
00091 
00095   void ProxyRequest(bool is_resource_fetch,
00096                     const GoogleUrl& requested_url,
00097                     AsyncFetch* async_fetch,
00098                     MessageHandler* handler);
00099 
00102   bool UrlAndPortMatchThisServer(const GoogleUrl& url);
00103 
00105   ServerContext* server_context_; 
00106   UrlAsyncFetcher* fetcher_; 
00107   Timer* timer_; 
00108   MessageHandler* handler_; 
00109 
00113   const GoogleString hostname_;
00114   const int port_;
00115 
00118   TimedVariable* all_requests_;
00120   TimedVariable* pagespeed_requests_;
00122   TimedVariable* blink_requests_;
00124   TimedVariable* blink_critical_line_requests_;
00126   TimedVariable* rejected_requests_;
00127 
00128   scoped_ptr<ProxyFetchFactory> proxy_fetch_factory_;
00129 
00130   DISALLOW_COPY_AND_ASSIGN(ProxyInterface);
00131 };
00132 
00133 }  
00134 
00135 #endif  ///< NET_INSTAWEB_AUTOMATIC_PUBLIC_PROXY_INTERFACE_H_
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