content/browser/indexed_db/indexed_db_factory_impl.h

   1 // Copyright (c) 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_INDEXED_DB_INDEXED_DB_FACTORY_IMPL_H_
   6 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FACTORY_IMPL_H_
   7
   8 #include <map>
   9 #include <set>
  10 #include <string>
  11
  12 #include "content/browser/indexed_db/indexed_db_factory.h"
  13
  14 namespace content {
  15
  16 class IndexedDBContextImpl;
  17
  18 class CONTENT_EXPORT IndexedDBFactoryImpl : public IndexedDBFactory {
  19  public:
  20   explicit IndexedDBFactoryImpl(IndexedDBContextImpl* context);
  21
  22   // content::IndexedDBFactory overrides:
  23   void ReleaseDatabase(const IndexedDBDatabase::Identifier& identifier,
  24                        bool forcedClose) override;
  25
  26   void GetDatabaseNames(scoped_refptr<IndexedDBCallbacks> callbacks,
  27                         const GURL& origin_url,
  28                         const base::FilePath& data_directory,
  29                         net::URLRequestContext* request_context) override;
  30   void Open(const base::string16& name,
  31             const IndexedDBPendingConnection& connection,
  32             net::URLRequestContext* request_context,
  33             const GURL& origin_url,
  34             const base::FilePath& data_directory) override;
  35
  36   void DeleteDatabase(const base::string16& name,
  37                       net::URLRequestContext* request_context,
  38                       scoped_refptr<IndexedDBCallbacks> callbacks,
  39                       const GURL& origin_url,
  40                       const base::FilePath& data_directory) override;
  41
  42   void HandleBackingStoreFailure(const GURL& origin_url) override;
  43   void HandleBackingStoreCorruption(
  44       const GURL& origin_url,
  45       const IndexedDBDatabaseError& error) override;
  46
  47   OriginDBs GetOpenDatabasesForOrigin(const GURL& origin_url) const override;
  48
  49   void ForceClose(const GURL& origin_url) override;
  50
  51   // Called by the IndexedDBContext destructor so the factory can do cleanup.
  52   void ContextDestroyed() override;
  53
  54   // Called by the IndexedDBActiveBlobRegistry.
  55   void ReportOutstandingBlobs(const GURL& origin_url,
  56                               bool blobs_outstanding) override;
  57
  58   // Called by an IndexedDBDatabase when it is actually deleted.
  59   void DatabaseDeleted(
  60       const IndexedDBDatabase::Identifier& identifier) override;
  61
  62   size_t GetConnectionCount(const GURL& origin_url) const override;
  63
  64  protected:
  65   ~IndexedDBFactoryImpl() override;
  66
  67   scoped_refptr<IndexedDBBackingStore> OpenBackingStore(
  68       const GURL& origin_url,
  69       const base::FilePath& data_directory,
  70       net::URLRequestContext* request_context,
  71       blink::WebIDBDataLoss* data_loss,
  72       std::string* data_loss_reason,
  73       bool* disk_full,
  74       leveldb::Status* s) override;
  75
  76   scoped_refptr<IndexedDBBackingStore> OpenBackingStoreHelper(
  77       const GURL& origin_url,
  78       const base::FilePath& data_directory,
  79       net::URLRequestContext* request_context,
  80       blink::WebIDBDataLoss* data_loss,
  81       std::string* data_loss_message,
  82       bool* disk_full,
  83       bool first_time,
  84       leveldb::Status* s) override;
  85
  86   void ReleaseBackingStore(const GURL& origin_url, bool immediate);
  87   void CloseBackingStore(const GURL& origin_url);
  88   IndexedDBContextImpl* context() const { return context_; }
  89
  90  private:
  91   FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest,
  92                            BackingStoreReleasedOnForcedClose);
  93   FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest,
  94                            BackingStoreReleaseDelayedOnClose);
  95   FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest, DatabaseFailedOpen);
  96   FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest,
  97                            DeleteDatabaseClosesBackingStore);
  98   FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest,
  99                            ForceCloseReleasesBackingStore);
 100   FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest,
 101                            GetDatabaseNamesClosesBackingStore);
 102   FRIEND_TEST_ALL_PREFIXES(IndexedDBTest,
 103                            ForceCloseOpenDatabasesOnCommitFailure);
 104
 105   typedef std::map<IndexedDBDatabase::Identifier, IndexedDBDatabase*>
 106       IndexedDBDatabaseMap;
 107   typedef std::map<GURL, scoped_refptr<IndexedDBBackingStore> >
 108       IndexedDBBackingStoreMap;
 109
 110   // Called internally after a database is closed, with some delay. If this
 111   // factory has the last reference, it will be released.
 112   void MaybeCloseBackingStore(const GURL& origin_url);
 113   bool HasLastBackingStoreReference(const GURL& origin_url) const;
 114
 115   // Testing helpers, so unit tests don't need to grovel through internal state.
 116   bool IsDatabaseOpen(const GURL& origin_url, const base::string16& name) const;
 117   bool IsBackingStoreOpen(const GURL& origin_url) const;
 118   bool IsBackingStorePendingClose(const GURL& origin_url) const;
 119   void RemoveDatabaseFromMaps(const IndexedDBDatabase::Identifier& identifier);
 120
 121   IndexedDBContextImpl* context_;
 122
 123   IndexedDBDatabaseMap database_map_;
 124   OriginDBMap origin_dbs_;
 125   IndexedDBBackingStoreMap backing_store_map_;
 126
 127   std::set<scoped_refptr<IndexedDBBackingStore> > session_only_backing_stores_;
 128   IndexedDBBackingStoreMap backing_stores_with_active_blobs_;
 129   std::set<GURL> backends_opened_since_boot_;
 130
 131   DISALLOW_COPY_AND_ASSIGN(IndexedDBFactoryImpl);
 132 };
 133
 134 }  // namespace content
 135
 136 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FACTORY_IMPL_H_