net/tools/flip_server/mem_cache.h

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef NET_TOOLS_FLIP_SERVER_MEM_CACHE_H_
   6 #define NET_TOOLS_FLIP_SERVER_MEM_CACHE_H_
   7
   8 #include <map>
   9 #include <string>
  10
  11 #include "base/compiler_specific.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "net/tools/balsa/balsa_headers.h"
  14 #include "net/tools/balsa/balsa_visitor_interface.h"
  15 #include "net/tools/flip_server/constants.h"
  16
  17 namespace net {
  18
  19 class StoreBodyAndHeadersVisitor : public BalsaVisitorInterface {
  20  public:
  21   void HandleError() { error_ = true; }
  22
  23   // BalsaVisitorInterface:
  24   virtual void ProcessBodyInput(const char* input, size_t size) override {}
  25   virtual void ProcessBodyData(const char* input, size_t size) override;
  26   virtual void ProcessHeaderInput(const char* input, size_t size) override {}
  27   virtual void ProcessTrailerInput(const char* input, size_t size) override {}
  28   virtual void ProcessHeaders(const BalsaHeaders& headers) override {
  29     // nothing to do here-- we're assuming that the BalsaFrame has
  30     // been handed our headers.
  31   }
  32   virtual void ProcessRequestFirstLine(const char* line_input,
  33                                        size_t line_length,
  34                                        const char* method_input,
  35                                        size_t method_length,
  36                                        const char* request_uri_input,
  37                                        size_t request_uri_length,
  38                                        const char* version_input,
  39                                        size_t version_length) override {}
  40   virtual void ProcessResponseFirstLine(const char* line_input,
  41                                         size_t line_length,
  42                                         const char* version_input,
  43                                         size_t version_length,
  44                                         const char* status_input,
  45                                         size_t status_length,
  46                                         const char* reason_input,
  47                                         size_t reason_length) override {}
  48   virtual void ProcessChunkLength(size_t chunk_length) override {}
  49   virtual void ProcessChunkExtensions(const char* input, size_t size) override {
  50   }
  51   virtual void HeaderDone() override {}
  52   virtual void MessageDone() override {}
  53   virtual void HandleHeaderError(BalsaFrame* framer) override;
  54   virtual void HandleHeaderWarning(BalsaFrame* framer) override;
  55   virtual void HandleChunkingError(BalsaFrame* framer) override;
  56   virtual void HandleBodyError(BalsaFrame* framer) override;
  57
  58   BalsaHeaders headers;
  59   std::string body;
  60   bool error_;
  61 };
  62
  63 class FileData {
  64  public:
  65   FileData();
  66   FileData(const BalsaHeaders* headers,
  67            const std::string& filename,
  68            const std::string& body);
  69   ~FileData();
  70
  71   BalsaHeaders* headers() { return headers_.get(); }
  72   const BalsaHeaders* headers() const { return headers_.get(); }
  73
  74   const std::string& filename() { return filename_; }
  75   const std::string& body() { return body_; }
  76
  77  private:
  78   scoped_ptr<BalsaHeaders> headers_;
  79   std::string filename_;
  80   std::string body_;
  81
  82   DISALLOW_COPY_AND_ASSIGN(FileData);
  83 };
  84
  85 class MemCacheIter {
  86  public:
  87   MemCacheIter()
  88       : file_data(NULL),
  89         priority(0),
  90         transformed_header(false),
  91         body_bytes_consumed(0),
  92         stream_id(0),
  93         max_segment_size(kInitialDataSendersThreshold),
  94         bytes_sent(0) {}
  95   explicit MemCacheIter(FileData* fd)
  96       : file_data(fd),
  97         priority(0),
  98         transformed_header(false),
  99         body_bytes_consumed(0),
 100         stream_id(0),
 101         max_segment_size(kInitialDataSendersThreshold),
 102         bytes_sent(0) {}
 103   FileData* file_data;
 104   int priority;
 105   bool transformed_header;
 106   size_t body_bytes_consumed;
 107   uint32 stream_id;
 108   uint32 max_segment_size;
 109   size_t bytes_sent;
 110 };
 111
 112 class MemoryCache {
 113  public:
 114   typedef std::map<std::string, FileData*> Files;
 115
 116  public:
 117   MemoryCache();
 118   virtual ~MemoryCache();
 119
 120   void CloneFrom(const MemoryCache& mc);
 121
 122   void AddFiles();
 123
 124   // virtual for unittests
 125   virtual void ReadToString(const char* filename, std::string* output);
 126
 127   void ReadAndStoreFileContents(const char* filename);
 128
 129   FileData* GetFileData(const std::string& filename);
 130
 131   bool AssignFileData(const std::string& filename, MemCacheIter* mci);
 132
 133   // For unittests
 134   void InsertFile(const BalsaHeaders* headers,
 135                   const std::string& filename,
 136                   const std::string& body);
 137
 138  private:
 139   void InsertFile(FileData* file_data);
 140   void ClearFiles();
 141
 142   Files files_;
 143   std::string cwd_;
 144 };
 145
 146 class NotifierInterface {
 147  public:
 148   virtual ~NotifierInterface() {}
 149   virtual void Notify() = 0;
 150 };
 151
 152 }  // namespace net
 153
 154 #endif  // NET_TOOLS_FLIP_SERVER_MEM_CACHE_H_