Page Speed Optimization Libraries  1.5.27.2
net/instaweb/rewriter/public/file_input_resource.h
Go to the documentation of this file.
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 
00020 
00021 #ifndef NET_INSTAWEB_REWRITER_PUBLIC_FILE_INPUT_RESOURCE_H_
00022 #define NET_INSTAWEB_REWRITER_PUBLIC_FILE_INPUT_RESOURCE_H_
00023 
00024 #include "net/instaweb/rewriter/public/resource.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 
00029 namespace net_instaweb {
00030 
00031 struct ContentType;
00032 class InputInfo;
00033 class MessageHandler;
00034 class ResponseHeaders;
00035 class RewriteOptions;
00036 class ServerContext;
00037 
00038 class FileInputResource : public Resource {
00039  public:
00040   FileInputResource(ServerContext* server_context,
00041                     const RewriteOptions* options,
00042                     const ContentType* type,
00043                     const StringPiece& url,
00044                     const StringPiece& filename);
00045   virtual ~FileInputResource();
00046 
00049 
00050   virtual bool IsValidAndCacheable() const;
00051 
00053   virtual void FillInPartitionInputInfo(HashHint include_content_hash,
00054                                         InputInfo* input);
00055 
00056   virtual GoogleString url() const { return url_; }
00057   virtual const RewriteOptions* rewrite_options() const {
00058     return rewrite_options_;
00059   }
00060 
00061   virtual bool UseHttpCache() const { return false; }
00062 
00063  protected:
00064   void SetDefaultHeaders(const ContentType* content_type,
00065                          ResponseHeaders* header, MessageHandler* handler);
00066 
00067   virtual void LoadAndCallback(NotCacheablePolicy not_cacheable_policy,
00068                                AsyncCallback* callback,
00069                                MessageHandler* message_handler);
00070 
00071  private:
00072   GoogleString url_;
00073   GoogleString filename_;
00074   int64 last_modified_time_sec_; 
00075 
00076   const RewriteOptions* rewrite_options_;
00077 
00078   DISALLOW_COPY_AND_ASSIGN(FileInputResource);
00079 };
00080 
00081 }  
00082 
00083 #endif  ///< NET_INSTAWEB_REWRITER_PUBLIC_FILE_INPUT_RESOURCE_H_
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines