storage/browser/blob/blob_url_request_job_factory.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 STORAGE_BROWSER_BLOB_BLOB_URL_REQUEST_JOB_FACTORY_H_
   6 #define STORAGE_BROWSER_BLOB_BLOB_URL_REQUEST_JOB_FACTORY_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "net/url_request/url_request.h"
  12 #include "net/url_request/url_request_job_factory.h"
  13 #include "storage/browser/storage_browser_export.h"
  14
  15 namespace base {
  16 class SingleThreadTaskRunner;
  17 }  // namespace base
  18
  19 namespace storage {
  20 class FileSystemContext;
  21 }  // namespace storage
  22
  23 namespace net {
  24 class URLRequestContext;
  25 }  // namespace net
  26
  27 namespace storage {
  28
  29 class BlobDataSnapshot;
  30 class BlobDataHandle;
  31 class BlobStorageContext;
  32
  33 class STORAGE_EXPORT BlobProtocolHandler
  34     : public net::URLRequestJobFactory::ProtocolHandler {
  35  public:
  36   // A helper to manufacture an URLRequest to retrieve the given blob.
  37   static scoped_ptr<net::URLRequest> CreateBlobRequest(
  38       scoped_ptr<BlobDataHandle> blob_data_handle,
  39       const net::URLRequestContext* request_context,
  40       net::URLRequest::Delegate* request_delegate);
  41
  42   // This class ignores the request's URL and uses the value given
  43   // to SetRequestedBlobDataHandle instead.
  44   static void SetRequestedBlobDataHandle(
  45       net::URLRequest* request,
  46       scoped_ptr<BlobDataHandle> blob_data_handle);
  47
  48   BlobProtocolHandler(
  49       BlobStorageContext* context,
  50       storage::FileSystemContext* file_system_context,
  51       const scoped_refptr<base::SingleThreadTaskRunner>& file_task_runner);
  52   ~BlobProtocolHandler() override;
  53
  54   net::URLRequestJob* MaybeCreateJob(
  55       net::URLRequest* request,
  56       net::NetworkDelegate* network_delegate) const override;
  57
  58  private:
  59   scoped_ptr<BlobDataSnapshot> LookupBlobData(net::URLRequest* request) const;
  60
  61   base::WeakPtr<BlobStorageContext> context_;
  62   const scoped_refptr<storage::FileSystemContext> file_system_context_;
  63   const scoped_refptr<base::SingleThreadTaskRunner> file_task_runner_;
  64
  65   DISALLOW_COPY_AND_ASSIGN(BlobProtocolHandler);
  66 };
  67
  68 }  // namespace storage
  69
  70 #endif  // STORAGE_BROWSER_BLOB_BLOB_URL_REQUEST_JOB_FACTORY_H_