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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.
*/
#include "modules/webdatabase/DatabaseManager.h"
#include "bindings/core/v8/ExceptionMessages.h"
#include "bindings/core/v8/ExceptionState.h"
#include "core/dom/ExceptionCode.h"
#include "core/dom/ExecutionContext.h"
#include "core/dom/ExecutionContextTask.h"
#include "core/inspector/ConsoleMessage.h"
#include "modules/webdatabase/Database.h"
#include "modules/webdatabase/DatabaseCallback.h"
#include "modules/webdatabase/DatabaseClient.h"
#include "modules/webdatabase/DatabaseContext.h"
#include "modules/webdatabase/DatabaseTask.h"
#include "modules/webdatabase/DatabaseTracker.h"
#include "modules/webdatabase/StorageLog.h"
#include "platform/weborigin/SecurityOrigin.h"
#include "public/platform/WebTraceLocation.h"
#include "wtf/PtrUtil.h"
namespace blink {
static DatabaseManager* s_databaseManager;
DatabaseManager& DatabaseManager::manager()
{
DCHECK(isMainThread());
if (!s_databaseManager)
s_databaseManager = new DatabaseManager();
return *s_databaseManager;
}
void DatabaseManager::terminateDatabaseThread()
{
DCHECK(isMainThread());
if (!s_databaseManager)
return;
for (const Member<DatabaseContext>& context : s_databaseManager->m_contextMap.values())
context->stopDatabases();
}
DatabaseManager::DatabaseManager()
#if ENABLE(ASSERT)
: m_databaseContextRegisteredCount(0)
, m_databaseContextInstanceCount(0)
#endif
{
}
DatabaseManager::~DatabaseManager()
{
}
// This is just for ignoring DatabaseCallback::handleEvent()'s return value.
static void databaseCallbackHandleEvent(DatabaseCallback* callback, Database* database)
{
callback->handleEvent(database);
}
DatabaseContext* DatabaseManager::existingDatabaseContextFor(ExecutionContext* context)
{
ASSERT(m_databaseContextRegisteredCount >= 0);
ASSERT(m_databaseContextInstanceCount >= 0);
ASSERT(m_databaseContextRegisteredCount <= m_databaseContextInstanceCount);
return m_contextMap.get(context);
}
DatabaseContext* DatabaseManager::databaseContextFor(ExecutionContext* context)
{
if (DatabaseContext* databaseContext = existingDatabaseContextFor(context))
return databaseContext;
return DatabaseContext::create(context);
}
void DatabaseManager::registerDatabaseContext(DatabaseContext* databaseContext)
{
ExecutionContext* context = databaseContext->getExecutionContext();
m_contextMap.set(context, databaseContext);
#if ENABLE(ASSERT)
m_databaseContextRegisteredCount++;
#endif
}
void DatabaseManager::unregisterDatabaseContext(DatabaseContext* databaseContext)
{
ExecutionContext* context = databaseContext->getExecutionContext();
ASSERT(m_contextMap.get(context));
#if ENABLE(ASSERT)
m_databaseContextRegisteredCount--;
#endif
m_contextMap.remove(context);
}
#if ENABLE(ASSERT)
void DatabaseManager::didConstructDatabaseContext()
{
m_databaseContextInstanceCount++;
}
void DatabaseManager::didDestructDatabaseContext()
{
m_databaseContextInstanceCount--;
ASSERT(m_databaseContextRegisteredCount <= m_databaseContextInstanceCount);
}
#endif
void DatabaseManager::throwExceptionForDatabaseError(DatabaseError error, const String& errorMessage, ExceptionState& exceptionState)
{
switch (error) {
case DatabaseError::None:
return;
case DatabaseError::GenericSecurityError:
exceptionState.throwSecurityError(errorMessage);
return;
case DatabaseError::InvalidDatabaseState:
exceptionState.throwDOMException(InvalidStateError, errorMessage);
return;
default:
ASSERT_NOT_REACHED();
}
}
static void logOpenDatabaseError(ExecutionContext* context, const String& name)
{
STORAGE_DVLOG(1) << "Database " << name << " for origin " << context->getSecurityOrigin()->toString() << " not allowed to be established";
}
Database* DatabaseManager::openDatabaseInternal(ExecutionContext* context,
const String& name, const String& expectedVersion, const String& displayName,
unsigned estimatedSize, bool setVersionInNewDatabase, DatabaseError& error, String& errorMessage)
{
ASSERT(error == DatabaseError::None);
DatabaseContext* backendContext = databaseContextFor(context)->backend();
if (DatabaseTracker::tracker().canEstablishDatabase(backendContext, name, displayName, estimatedSize, error)) {
Database* backend = new Database(backendContext, name, expectedVersion, displayName, estimatedSize);
if (backend->openAndVerifyVersion(setVersionInNewDatabase, error, errorMessage))
return backend;
}
ASSERT(error != DatabaseError::None);
switch (error) {
case DatabaseError::GenericSecurityError:
logOpenDatabaseError(context, name);
return nullptr;
case DatabaseError::InvalidDatabaseState:
logErrorMessage(context, errorMessage);
return nullptr;
default:
ASSERT_NOT_REACHED();
}
return nullptr;
}
Database* DatabaseManager::openDatabase(ExecutionContext* context,
const String& name, const String& expectedVersion, const String& displayName,
unsigned estimatedSize, DatabaseCallback* creationCallback,
DatabaseError& error, String& errorMessage)
{
ASSERT(error == DatabaseError::None);
bool setVersionInNewDatabase = !creationCallback;
Database* database = openDatabaseInternal(context, name,
expectedVersion, displayName, estimatedSize, setVersionInNewDatabase, error, errorMessage);
if (!database)
return nullptr;
databaseContextFor(context)->setHasOpenDatabases();
DatabaseClient::from(context)->didOpenDatabase(database, context->getSecurityOrigin()->host(), name, expectedVersion);
if (database->isNew() && creationCallback) {
STORAGE_DVLOG(1) << "Scheduling DatabaseCreationCallbackTask for database " << database;
database->getExecutionContext()->postTask(BLINK_FROM_HERE, createSameThreadTask(&databaseCallbackHandleEvent, wrapPersistent(creationCallback), wrapPersistent(database)), "openDatabase");
}
ASSERT(database);
return database;
}
String DatabaseManager::fullPathForDatabase(SecurityOrigin* origin, const String& name, bool createIfDoesNotExist)
{
return DatabaseTracker::tracker().fullPathForDatabase(origin, name, createIfDoesNotExist);
}
void DatabaseManager::logErrorMessage(ExecutionContext* context, const String& message)
{
context->addConsoleMessage(ConsoleMessage::create(StorageMessageSource, ErrorMessageLevel, message));
}
} // namespace blink