content/browser/service_worker/service_worker_disk_cache.h

   1 // Copyright 2014 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 CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DISK_CACHE_H_
   6 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DISK_CACHE_H_
   7
   8 #include "content/browser/appcache/appcache_disk_cache.h"
   9 #include "content/common/content_export.h"
  10
  11 namespace content {
  12
  13 // Wholesale reusage of the appcache code for response reading,
  14 // writing, and storage. See the corresponding class in that
  15 // library for doc comments and other details.
  16 // TODO(michaeln): If this reuse sticks, refactor/move the
  17 // resused classes to a more common location.
  18
  19 class CONTENT_EXPORT ServiceWorkerDiskCache
  20     : public AppCacheDiskCache {
  21  public:
  22   static scoped_ptr<ServiceWorkerDiskCache> CreateWithBlockFileBackend();
  23   static scoped_ptr<ServiceWorkerDiskCache> CreateWithSimpleBackend();
  24
  25  private:
  26   friend class ServiceWorkerDiskCacheMigrator;
  27   friend class ServiceWorkerDiskCacheMigratorTest;
  28   explicit ServiceWorkerDiskCache(bool use_simple_cache);
  29 };
  30
  31 class CONTENT_EXPORT ServiceWorkerResponseReader
  32     : public AppCacheResponseReader {
  33  protected:
  34   // Should only be constructed by the storage class.
  35   friend class ServiceWorkerDiskCacheMigrator;
  36   friend class ServiceWorkerDiskCacheMigratorTest;
  37   friend class ServiceWorkerStorage;
  38   ServiceWorkerResponseReader(
  39       int64 response_id,
  40       ServiceWorkerDiskCache* disk_cache);
  41 };
  42
  43 class CONTENT_EXPORT ServiceWorkerResponseWriter
  44     : public AppCacheResponseWriter {
  45  protected:
  46   // Should only be constructed by the storage class.
  47   friend class ServiceWorkerDiskCacheMigrator;
  48   friend class ServiceWorkerDiskCacheMigratorTest;
  49   friend class ServiceWorkerStorage;
  50   ServiceWorkerResponseWriter(
  51       int64 response_id,
  52       ServiceWorkerDiskCache* disk_cache);
  53 };
  54
  55 class CONTENT_EXPORT ServiceWorkerResponseMetadataWriter
  56     : public AppCacheResponseMetadataWriter {
  57  protected:
  58   // Should only be constructed by the storage class.
  59   friend class ServiceWorkerDiskCacheMigrator;
  60   friend class ServiceWorkerDiskCacheMigratorTest;
  61   friend class ServiceWorkerStorage;
  62   ServiceWorkerResponseMetadataWriter(int64 response_id,
  63                                       ServiceWorkerDiskCache* disk_cache);
  64 };
  65
  66 }  // namespace content
  67
  68 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DISK_CACHE_H_