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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FACTORY_H_
#define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FACTORY_H_
#include <map>
#include <set>
#include "base/basictypes.h"
#include "base/files/file_path.h"
#include "base/memory/ref_counted.h"
#include "base/strings/string16.h"
#include "content/browser/indexed_db/indexed_db_callbacks.h"
#include "content/browser/indexed_db/indexed_db_database.h"
#include "content/browser/indexed_db/indexed_db_database_callbacks.h"
#include "content/common/content_export.h"
#include "url/gurl.h"
namespace content {
class IndexedDBBackingStore;
class IndexedDBContextImpl;
class CONTENT_EXPORT IndexedDBFactory
: NON_EXPORTED_BASE(public base::RefCountedThreadSafe<IndexedDBFactory>) {
public:
typedef std::multimap<GURL, IndexedDBDatabase*> OriginDBMap;
typedef OriginDBMap::const_iterator OriginDBMapIterator;
explicit IndexedDBFactory(IndexedDBContextImpl* context);
// Notifications from weak pointers.
void ReleaseDatabase(const IndexedDBDatabase::Identifier& identifier,
bool forcedClose);
void GetDatabaseNames(scoped_refptr<IndexedDBCallbacks> callbacks,
const GURL& origin_url,
const base::FilePath& data_directory);
void Open(const base::string16& name,
int64 version,
int64 transaction_id,
scoped_refptr<IndexedDBCallbacks> callbacks,
scoped_refptr<IndexedDBDatabaseCallbacks> database_callbacks,
const GURL& origin_url,
const base::FilePath& data_directory);
void DeleteDatabase(const base::string16& name,
scoped_refptr<IndexedDBCallbacks> callbacks,
const GURL& origin_url,
const base::FilePath& data_directory);
void HandleBackingStoreFailure(const GURL& origin_url);
std::pair<OriginDBMapIterator, OriginDBMapIterator> GetOpenDatabasesForOrigin(
const GURL& origin_url) const;
// Called by IndexedDBContext after all connections are closed, to
// ensure the backing store closed immediately.
void ForceClose(const GURL& origin_url);
// Called by the IndexedDBContext destructor so the factory can do cleanup.
void ContextDestroyed();
// Called by an IndexedDBDatabase when it is actually deleted.
void DatabaseDeleted(const IndexedDBDatabase::Identifier& identifier);
size_t GetConnectionCount(const GURL& origin_url) const;
protected:
friend class base::RefCountedThreadSafe<IndexedDBFactory>;
virtual ~IndexedDBFactory();
virtual scoped_refptr<IndexedDBBackingStore> OpenBackingStore(
const GURL& origin_url,
const base::FilePath& data_directory,
blink::WebIDBDataLoss* data_loss,
std::string* data_loss_reason,
bool* disk_full);
void ReleaseBackingStore(const GURL& origin_url, bool immediate);
void CloseBackingStore(const GURL& origin_url);
private:
FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest,
BackingStoreReleasedOnForcedClose);
FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest,
BackingStoreReleaseDelayedOnClose);
FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest, DatabaseFailedOpen);
FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest,
DeleteDatabaseClosesBackingStore);
FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest,
ForceCloseReleasesBackingStore);
FRIEND_TEST_ALL_PREFIXES(IndexedDBFactoryTest,
GetDatabaseNamesClosesBackingStore);
FRIEND_TEST_ALL_PREFIXES(IndexedDBTest,
ForceCloseOpenDatabasesOnCommitFailure);
// Called internally after a database is closed, with some delay. If this
// factory has the last reference, it will be released.
void MaybeCloseBackingStore(const GURL& origin_url);
bool HasLastBackingStoreReference(const GURL& origin_url) const;
// Testing helpers, so unit tests don't need to grovel through internal state.
bool IsDatabaseOpen(const GURL& origin_url,
const base::string16& name) const;
bool IsBackingStoreOpen(const GURL& origin_url) const;
bool IsBackingStorePendingClose(const GURL& origin_url) const;
void RemoveDatabaseFromMaps(const IndexedDBDatabase::Identifier& identifier);
IndexedDBContextImpl* context_;
typedef std::map<IndexedDBDatabase::Identifier,
IndexedDBDatabase*> IndexedDBDatabaseMap;
IndexedDBDatabaseMap database_map_;
OriginDBMap origin_dbs_;
typedef std::map<GURL, scoped_refptr<IndexedDBBackingStore> >
IndexedDBBackingStoreMap;
IndexedDBBackingStoreMap backing_store_map_;
std::set<scoped_refptr<IndexedDBBackingStore> > session_only_backing_stores_;
};
} // namespace content
#endif // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FACTORY_H_
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