src/content/browser/shared_worker/worker_storage_partition.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_SHARED_WORKERT_WORKER_STORAGE_PARTITION_H_
   6 #define CONTENT_BROWSER_SHARED_WORKERT_WORKER_STORAGE_PARTITION_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "content/common/content_export.h"
  10
  11 namespace storage {
  12 class QuotaManager;
  13 }
  14
  15 namespace storage {
  16 class FileSystemContext;
  17 }  // namespace storage
  18
  19 namespace net {
  20 class URLRequestContextGetter;
  21 }
  22
  23 namespace storage {
  24 class DatabaseTracker;
  25 }  // namespace storage
  26
  27 namespace content {
  28 class ChromeAppCacheService;
  29 class IndexedDBContextImpl;
  30 class ServiceWorkerContextWrapper;
  31
  32 // Contains the data from StoragePartition for use by Worker APIs.
  33 //
  34 // StoragePartition meant for the UI so we can't use it directly in many
  35 // Worker APIs that run on the IO thread. While we could make it RefCounted,
  36 // the Worker system is the only place that really needs access on the IO
  37 // thread. Instead of changing the lifetime semantics of StoragePartition,
  38 // we just create a parallel struct here to simplify the APIs of various
  39 // methods in WorkerServiceImpl.
  40 //
  41 // This class is effectively a struct, but we make it a class because we want to
  42 // define copy constructors, assignment operators, and an Equals() function for
  43 // it which makes it look awkward as a struct.
  44 class CONTENT_EXPORT WorkerStoragePartition {
  45  public:
  46   WorkerStoragePartition(
  47       net::URLRequestContextGetter* url_request_context,
  48       net::URLRequestContextGetter* media_url_request_context,
  49       ChromeAppCacheService* appcache_service,
  50       storage::QuotaManager* quota_manager,
  51       storage::FileSystemContext* filesystem_context,
  52       storage::DatabaseTracker* database_tracker,
  53       IndexedDBContextImpl* indexed_db_context,
  54       ServiceWorkerContextWrapper* service_worker_context);
  55   ~WorkerStoragePartition();
  56
  57   // Declaring so these don't get inlined which has the unfortunate effect of
  58   // requiring all including classes to have the full definition of every member
  59   // type.
  60   WorkerStoragePartition(const WorkerStoragePartition& other);
  61   const WorkerStoragePartition& operator=(const WorkerStoragePartition& rhs);
  62
  63   bool Equals(const WorkerStoragePartition& other) const;
  64
  65   net::URLRequestContextGetter* url_request_context() const {
  66     return url_request_context_.get();
  67   }
  68
  69   net::URLRequestContextGetter* media_url_request_context() const {
  70     return media_url_request_context_.get();
  71   }
  72
  73   ChromeAppCacheService* appcache_service() const {
  74     return appcache_service_.get();
  75   }
  76
  77   storage::QuotaManager* quota_manager() const { return quota_manager_.get(); }
  78
  79   storage::FileSystemContext* filesystem_context() const {
  80     return filesystem_context_.get();
  81   }
  82
  83   storage::DatabaseTracker* database_tracker() const {
  84     return database_tracker_.get();
  85   }
  86
  87   IndexedDBContextImpl* indexed_db_context() const {
  88     return indexed_db_context_.get();
  89   }
  90
  91   ServiceWorkerContextWrapper* service_worker_context() const {
  92     return service_worker_context_.get();
  93   }
  94
  95  private:
  96   void Copy(const WorkerStoragePartition& other);
  97
  98   scoped_refptr<net::URLRequestContextGetter> url_request_context_;
  99   scoped_refptr<net::URLRequestContextGetter> media_url_request_context_;
 100   scoped_refptr<ChromeAppCacheService> appcache_service_;
 101   scoped_refptr<storage::QuotaManager> quota_manager_;
 102   scoped_refptr<storage::FileSystemContext> filesystem_context_;
 103   scoped_refptr<storage::DatabaseTracker> database_tracker_;
 104   scoped_refptr<IndexedDBContextImpl> indexed_db_context_;
 105   scoped_refptr<ServiceWorkerContextWrapper> service_worker_context_;
 106 };
 107
 108 // WorkerStoragePartitionId can be used to identify each
 109 // WorkerStoragePartitions. We can hold WorkerStoragePartitionId without
 110 // extending the lifetime of all objects in the WorkerStoragePartition.
 111 // That means that holding a WorkerStoragePartitionId doesn't mean the
 112 // corresponding partition and its members are kept alive.
 113 class CONTENT_EXPORT WorkerStoragePartitionId {
 114  public:
 115   explicit WorkerStoragePartitionId(const WorkerStoragePartition& partition);
 116   ~WorkerStoragePartitionId();
 117   bool Equals(const WorkerStoragePartitionId& other) const;
 118
 119  private:
 120   net::URLRequestContextGetter* url_request_context_;
 121   net::URLRequestContextGetter* media_url_request_context_;
 122   ChromeAppCacheService* appcache_service_;
 123   storage::QuotaManager* quota_manager_;
 124   storage::FileSystemContext* filesystem_context_;
 125   storage::DatabaseTracker* database_tracker_;
 126   IndexedDBContextImpl* indexed_db_context_;
 127   ServiceWorkerContextWrapper* service_worker_context_;
 128 };
 129
 130 }  // namespace content
 131
 132 #endif  // CONTENT_BROWSER_SHARED_WORKERT_WORKER_STORAGE_PARTITION_H_