Page Speed Optimization Libraries  1.4.26.1
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 <set>
00023 
00024 #include "net/instaweb/http/public/content_type.h"
00025 #include "net/instaweb/util/public/basictypes.h"
00026 #include "net/instaweb/util/public/string.h"
00027 
00028 namespace net_instaweb {
00029 
00030 class AsyncFetch;
00031 class MessageHandler;
00032 
00036 class UrlAsyncFetcher {
00037  public:
00038   static const int64 kUnspecifiedTimeout;
00039 
00041   static const char kStatisticsGroup[];
00042 
00043   virtual ~UrlAsyncFetcher();
00044 
00054   virtual void Fetch(const GoogleString& url,
00055                      MessageHandler* message_handler,
00056                      AsyncFetch* fetch) = 0;
00057 
00060   virtual bool SupportsHttps() const { return true; }
00061 
00064   virtual int64 timeout_ms() { return kUnspecifiedTimeout; }
00065 
00070   virtual void ShutDown();
00071 
00074   void set_fetch_with_gzip(bool x) { fetch_with_gzip_ = x; }
00075   bool fetch_with_gzip() const { return fetch_with_gzip_; }
00076 
00081   AsyncFetch* EnableInflation(
00082       AsyncFetch* fetch,
00083       const std::set<const ContentType*>* inflation_content_type_blacklist)
00084           const;
00085 
00086  protected:
00089   UrlAsyncFetcher() : fetch_with_gzip_(false) {}
00090 
00091  private:
00092   bool fetch_with_gzip_;
00093 
00094   DISALLOW_COPY_AND_ASSIGN(UrlAsyncFetcher);
00095 };
00096 
00097 }  
00098 
00099 #endif  ///< NET_INSTAWEB_HTTP_PUBLIC_URL_ASYNC_FETCHER_H_
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