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   virtual void ReleaseDatabase(const IndexedDBDatabase::Identifier& identifier,
  24                                bool forcedClose) OVERRIDE;
  25
  26   virtual void GetDatabaseNames(
  27       scoped_refptr<IndexedDBCallbacks> callbacks,
  28       const GURL& origin_url,
  29       const base::FilePath& data_directory,
  30       net::URLRequestContext* request_context) OVERRIDE;
  31   virtual void Open(const base::string16& name,
  32                     const IndexedDBPendingConnection& connection,
  33                     net::URLRequestContext* request_context,
  34                     const GURL& origin_url,
  35                     const base::FilePath& data_directory) OVERRIDE;
  36
  37   virtual void DeleteDatabase(const base::string16& name,
  38                               net::URLRequestContext* request_context,
  39                               scoped_refptr<IndexedDBCallbacks> callbacks,
  40                               const GURL& origin_url,
  41                               const base::FilePath& data_directory) OVERRIDE;
  42
  43   virtual void HandleBackingStoreFailure(const GURL& origin_url) OVERRIDE;
  44   virtual void HandleBackingStoreCorruption(
  45       const GURL& origin_url,
  46       const IndexedDBDatabaseError& error) OVERRIDE;
  47
  48   virtual OriginDBs GetOpenDatabasesForOrigin(
  49       const GURL& origin_url) const OVERRIDE;
  50
  51   virtual void ForceClose(const GURL& origin_url) OVERRIDE;
  52
  53   // Called by the IndexedDBContext destructor so the factory can do cleanup.
  54   virtual void ContextDestroyed() OVERRIDE;
  55
  56   // Called by the IndexedDBActiveBlobRegistry.
  57   virtual void ReportOutstandingBlobs(const GURL& origin_url,
  58                                       bool blobs_outstanding) OVERRIDE;
  59
  60   // Called by an IndexedDBDatabase when it is actually deleted.
  61   virtual void DatabaseDeleted(
  62       const IndexedDBDatabase::Identifier& identifier) OVERRIDE;
  63
  64   virtual size_t GetConnectionCount(const GURL& origin_url) const OVERRIDE;
  65
  66  protected:
  67   virtual ~IndexedDBFactoryImpl();
  68
  69   virtual scoped_refptr<IndexedDBBackingStore> OpenBackingStore(
  70       const GURL& origin_url,
  71       const base::FilePath& data_directory,
  72       net::URLRequestContext* request_context,
  73       blink::WebIDBDataLoss* data_loss,
  74       std::string* data_loss_reason,
  75       bool* disk_full,
  76       leveldb::Status* s) OVERRIDE;
  77
  78   virtual scoped_refptr<IndexedDBBackingStore> OpenBackingStoreHelper(
  79       const GURL& origin_url,
  80       const base::FilePath& data_directory,
  81       net::URLRequestContext* request_context,
  82       blink::WebIDBDataLoss* data_loss,
  83       std::string* data_loss_message,
  84       bool* disk_full,
  85       bool first_time,
  86       leveldb::Status* s) OVERRIDE;
  87
  88   void ReleaseBackingStore(const GURL& origin_url, bool immediate);
  89   void CloseBackingStore(const GURL& origin_url);
  90   IndexedDBContextImpl* context() const { return context_; }
  91
  92  private:
  93   FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest,
  94                            BackingStoreReleasedOnForcedClose);
  95   FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest,
  96                            BackingStoreReleaseDelayedOnClose);
  97   FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest, DatabaseFailedOpen);
  98   FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest,
  99                            DeleteDatabaseClosesBackingStore);
 100   FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest,
 101                            ForceCloseReleasesBackingStore);
 102   FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest,
 103                            GetDatabaseNamesClosesBackingStore);
 104   FRIEND_TEST_ALL_PREFIXES(IndexedDBTest,
 105                            ForceCloseOpenDatabasesOnCommitFailure);
 106
 107   typedef std::map<IndexedDBDatabase::Identifier, IndexedDBDatabase*>
 108       IndexedDBDatabaseMap;
 109   typedef std::map<GURL, scoped_refptr<IndexedDBBackingStore> >
 110       IndexedDBBackingStoreMap;
 111
 112   // Called internally after a database is closed, with some delay. If this
 113   // factory has the last reference, it will be released.
 114   void MaybeCloseBackingStore(const GURL& origin_url);
 115   bool HasLastBackingStoreReference(const GURL& origin_url) const;
 116
 117   // Testing helpers, so unit tests don't need to grovel through internal state.
 118   bool IsDatabaseOpen(const GURL& origin_url, const base::string16& name) const;
 119   bool IsBackingStoreOpen(const GURL& origin_url) const;
 120   bool IsBackingStorePendingClose(const GURL& origin_url) const;
 121   void RemoveDatabaseFromMaps(const IndexedDBDatabase::Identifier& identifier);
 122
 123   IndexedDBContextImpl* context_;
 124
 125   IndexedDBDatabaseMap database_map_;
 126   OriginDBMap origin_dbs_;
 127   IndexedDBBackingStoreMap backing_store_map_;
 128
 129   std::set<scoped_refptr<IndexedDBBackingStore> > session_only_backing_stores_;
 130   IndexedDBBackingStoreMap backing_stores_with_active_blobs_;
 131   std::set<GURL> backends_opened_since_boot_;
 132
 133   DISALLOW_COPY_AND_ASSIGN(IndexedDBFactoryImpl);
 134 };
 135
 136 }  // namespace content
 137
 138 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FACTORY_IMPL_H_