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   void Start() override;
  44   void Kill() override;
  45   bool ReadRawData(net::IOBuffer* buf, int buf_size, int* bytes_read) override;
  46   bool IsRedirectResponse(GURL* location, int* http_status_code) override;
  47   void SetExtraRequestHeaders(const net::HttpRequestHeaders& headers) override;
  48   void GetResponseInfo(net::HttpResponseInfo* info) override;
  49   int GetResponseCode() const override;
  50
  51   // FilterContext methods (via URLRequestJob):
  52   bool GetMimeType(std::string* mime_type) const override;
  53
  54  private:
  55   class CallbackDispatcher;
  56
  57   ~FileSystemURLRequestJob() override;
  58
  59   void StartAsync();
  60   void DidAttemptAutoMount(base::File::Error result);
  61   void DidGetMetadata(base::File::Error error_code,
  62                       const base::File::Info& file_info);
  63   void DidRead(int result);
  64   void NotifyFailed(int rv);
  65
  66   const std::string storage_domain_;
  67   FileSystemContext* file_system_context_;
  68   scoped_ptr<storage::FileStreamReader> reader_;
  69   FileSystemURL url_;
  70   bool is_directory_;
  71   scoped_ptr<net::HttpResponseInfo> response_info_;
  72   int64 remaining_bytes_;
  73   net::HttpByteRange byte_range_;
  74   base::WeakPtrFactory<FileSystemURLRequestJob> weak_factory_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(FileSystemURLRequestJob);
  77 };
  78
  79 }  // namespace storage
  80
  81 #endif  // STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_URL_REQUEST_JOB_H_