Page Speed Optimization Libraries  1.8.31.2
net/instaweb/http/public/url_async_fetcher.h
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00001 /*
00002  * Copyright 2010 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_URL_ASYNC_FETCHER_H_
00020 #define NET_INSTAWEB_HTTP_PUBLIC_URL_ASYNC_FETCHER_H_
00021 
00022 #include "net/instaweb/util/public/basictypes.h"
00023 #include "net/instaweb/util/public/string.h"
00024 
00025 namespace net_instaweb {
00026 
00027 class AsyncFetch;
00028 class MessageHandler;
00029 
00033 class UrlAsyncFetcher {
00034  public:
00035   static const int64 kUnspecifiedTimeout;
00036 
00038   static const char kStatisticsGroup[];
00039 
00040   virtual ~UrlAsyncFetcher();
00041 
00051   virtual void Fetch(const GoogleString& url,
00052                      MessageHandler* message_handler,
00053                      AsyncFetch* fetch) = 0;
00054 
00057   virtual bool SupportsHttps() const { return true; }
00058 
00061   virtual int64 timeout_ms() { return kUnspecifiedTimeout; }
00062 
00067   virtual void ShutDown();
00068 
00071   void set_fetch_with_gzip(bool x) { fetch_with_gzip_ = x; }
00072   bool fetch_with_gzip() const { return fetch_with_gzip_; }
00073 
00076   AsyncFetch* EnableInflation(AsyncFetch* fetch) const;
00077 
00078  protected:
00081   UrlAsyncFetcher() : fetch_with_gzip_(false) {}
00082 
00083  private:
00084   bool fetch_with_gzip_;
00085 
00086   DISALLOW_COPY_AND_ASSIGN(UrlAsyncFetcher);
00087 };
00088 
00089 }  
00090 
00091 #endif  ///< NET_INSTAWEB_HTTP_PUBLIC_URL_ASYNC_FETCHER_H_
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