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/*
* Copyright (C) 2012 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef DatabaseManager_h
#define DatabaseManager_h
#include "DatabaseBasicTypes.h"
#include "DatabaseDetails.h"
#include "DatabaseError.h"
#include <wtf/Assertions.h>
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/Lock.h>
#include <wtf/PassRefPtr.h>
#include <wtf/Threading.h>
namespace WebCore {
class AbstractDatabaseServer;
class Database;
class DatabaseCallback;
class DatabaseContext;
class DatabaseManagerClient;
class DatabaseSync;
class DatabaseTaskSynchronizer;
class SecurityOrigin;
class ScriptExecutionContext;
class DatabaseManager {
WTF_MAKE_NONCOPYABLE(DatabaseManager); WTF_MAKE_FAST_ALLOCATED;
friend class WTF::NeverDestroyed<DatabaseManager>;
public:
WEBCORE_EXPORT static DatabaseManager& singleton();
WEBCORE_EXPORT void initialize(const String& databasePath);
WEBCORE_EXPORT void setClient(DatabaseManagerClient*);
String databaseDirectoryPath() const;
void setDatabaseDirectoryPath(const String&);
bool isAvailable();
WEBCORE_EXPORT void setIsAvailable(bool);
// This gets a DatabaseContext for the specified ScriptExecutionContext.
// If one doesn't already exist, it will create a new one.
RefPtr<DatabaseContext> databaseContextFor(ScriptExecutionContext*);
// These 2 methods are for DatabaseContext (un)registration, and should only
// be called by the DatabaseContext constructor and destructor.
void registerDatabaseContext(DatabaseContext*);
void unregisterDatabaseContext(DatabaseContext*);
#if !ASSERT_DISABLED
void didConstructDatabaseContext();
void didDestructDatabaseContext();
#else
void didConstructDatabaseContext() { }
void didDestructDatabaseContext() { }
#endif
static ExceptionCode exceptionCodeForDatabaseError(DatabaseError);
RefPtr<Database> openDatabase(ScriptExecutionContext*, const String& name, const String& expectedVersion, const String& displayName, unsigned long estimatedSize, PassRefPtr<DatabaseCallback>, DatabaseError&);
WEBCORE_EXPORT bool hasOpenDatabases(ScriptExecutionContext*);
WEBCORE_EXPORT void closeAllDatabases();
void stopDatabases(ScriptExecutionContext*, DatabaseTaskSynchronizer*);
String fullPathForDatabase(SecurityOrigin*, const String& name, bool createIfDoesNotExist = true);
bool hasEntryForOrigin(SecurityOrigin*);
WEBCORE_EXPORT void origins(Vector<RefPtr<SecurityOrigin>>& result);
WEBCORE_EXPORT bool databaseNamesForOrigin(SecurityOrigin*, Vector<String>& result);
WEBCORE_EXPORT DatabaseDetails detailsForNameAndOrigin(const String&, SecurityOrigin*);
WEBCORE_EXPORT unsigned long long usageForOrigin(SecurityOrigin*);
WEBCORE_EXPORT unsigned long long quotaForOrigin(SecurityOrigin*);
WEBCORE_EXPORT void setQuota(SecurityOrigin*, unsigned long long);
WEBCORE_EXPORT void deleteAllDatabases();
WEBCORE_EXPORT bool deleteOrigin(SecurityOrigin*);
WEBCORE_EXPORT bool deleteDatabase(SecurityOrigin*, const String& name);
private:
class ProposedDatabase {
public:
ProposedDatabase(DatabaseManager&, SecurityOrigin*,
const String& name, const String& displayName, unsigned long estimatedSize);
~ProposedDatabase();
SecurityOrigin* origin() { return m_origin.get(); }
DatabaseDetails& details() { return m_details; }
private:
DatabaseManager& m_manager;
RefPtr<SecurityOrigin> m_origin;
DatabaseDetails m_details;
};
DatabaseManager();
~DatabaseManager() = delete;
// This gets a DatabaseContext for the specified ScriptExecutionContext if
// it already exist previously. Otherwise, it returns 0.
RefPtr<DatabaseContext> existingDatabaseContextFor(ScriptExecutionContext*);
PassRefPtr<Database> openDatabaseBackend(ScriptExecutionContext*, const String& name, const String& expectedVersion, const String& displayName, unsigned long estimatedSize, bool setVersionInNewDatabase, DatabaseError&, String& errorMessage);
void addProposedDatabase(ProposedDatabase*);
void removeProposedDatabase(ProposedDatabase*);
static void logErrorMessage(ScriptExecutionContext*, const String& message);
AbstractDatabaseServer* m_server;
DatabaseManagerClient* m_client;
bool m_databaseIsAvailable;
// Access to the following fields require locking m_lock below:
typedef HashMap<ScriptExecutionContext*, DatabaseContext*> ContextMap;
ContextMap m_contextMap;
#if !ASSERT_DISABLED
int m_databaseContextRegisteredCount;
int m_databaseContextInstanceCount;
#endif
HashSet<ProposedDatabase*> m_proposedDatabases;
// This mutex protects m_contextMap, and m_proposedDatabases.
Lock m_mutex;
};
} // namespace WebCore
#endif // DatabaseManager_h
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