storage/browser/fileapi/file_system_url_request_job.h

   1 // Copyright (c) 2012 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 STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_URL_REQUEST_JOB_H_
   6 #define STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_URL_REQUEST_JOB_H_
   7
   8 #include <string>
   9
  10 #include "base/files/file.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/memory/weak_ptr.h"
  14 #include "net/http/http_byte_range.h"
  15 #include "net/url_request/url_request_job.h"
  16 #include "storage/browser/fileapi/file_system_url.h"
  17 #include "storage/browser/storage_browser_export.h"
  18
  19 class GURL;
  20
  21 namespace base {
  22 class FilePath;
  23 }
  24
  25 namespace storage {
  26 class FileStreamReader;
  27 }
  28
  29 namespace storage {
  30 class FileSystemContext;
  31
  32 // A request job that handles reading filesystem: URLs
  33 class STORAGE_EXPORT_PRIVATE FileSystemURLRequestJob
  34     : public net::URLRequestJob {
  35  public:
  36   FileSystemURLRequestJob(
  37       net::URLRequest* request,
  38       net::NetworkDelegate* network_delegate,
  39       const std::string& storage_domain,
  40       FileSystemContext* file_system_context);
  41
  42   // URLRequestJob methods:
  43   virtual void Start() OVERRIDE;
  44   virtual void Kill() OVERRIDE;
  45   virtual bool ReadRawData(net::IOBuffer* buf,
  46                            int buf_size,
  47                            int* bytes_read) OVERRIDE;
  48   virtual bool IsRedirectResponse(GURL* location,
  49                                   int* http_status_code) OVERRIDE;
  50   virtual void SetExtraRequestHeaders(
  51       const net::HttpRequestHeaders& headers) OVERRIDE;
  52   virtual void GetResponseInfo(net::HttpResponseInfo* info) OVERRIDE;
  53   virtual int GetResponseCode() const OVERRIDE;
  54
  55   // FilterContext methods (via URLRequestJob):
  56   virtual bool GetMimeType(std::string* mime_type) const OVERRIDE;
  57
  58  private:
  59   class CallbackDispatcher;
  60
  61   virtual ~FileSystemURLRequestJob();
  62
  63   void StartAsync();
  64   void DidAttemptAutoMount(base::File::Error result);
  65   void DidGetMetadata(base::File::Error error_code,
  66                       const base::File::Info& file_info);
  67   void DidRead(int result);
  68   void NotifyFailed(int rv);
  69
  70   const std::string storage_domain_;
  71   FileSystemContext* file_system_context_;
  72   scoped_ptr<storage::FileStreamReader> reader_;
  73   FileSystemURL url_;
  74   bool is_directory_;
  75   scoped_ptr<net::HttpResponseInfo> response_info_;
  76   int64 remaining_bytes_;
  77   net::HttpByteRange byte_range_;
  78   base::WeakPtrFactory<FileSystemURLRequestJob> weak_factory_;
  79
  80   DISALLOW_COPY_AND_ASSIGN(FileSystemURLRequestJob);
  81 };
  82
  83 }  // namespace storage
  84
  85 #endif  // STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_URL_REQUEST_JOB_H_