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/*
* Copyright (C) 2016 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/
#pragma once
#include "IDBConnectionToServer.h"
#include "IDBDatabaseNameAndVersionRequest.h"
#include "IDBIndexIdentifier.h"
#include "IDBObjectStoreIdentifier.h"
#include "IDBResourceIdentifier.h"
#include "IndexKey.h"
#include "TransactionOperation.h"
#include <wtf/CrossThreadQueue.h>
#include <wtf/CrossThreadTask.h>
#include <wtf/Forward.h>
#include <wtf/Function.h>
#include <wtf/HashMap.h>
#include <wtf/Lock.h>
#include <wtf/MainThread.h>
#include <wtf/RefPtr.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class IDBDatabase;
class IDBDatabaseIdentifier;
class IDBError;
class IDBOpenDBRequest;
class IDBOpenRequestData;
class IDBResultData;
class IDBTransaction;
class ScriptExecutionContext;
class SecurityOrigin;
struct IDBGetRecordData;
struct IDBIterateCursorData;
namespace IDBClient {
class IDBConnectionToServer;
class WEBCORE_EXPORT IDBConnectionProxy final {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_EXPORT(IDBConnectionProxy, WEBCORE_EXPORT);
public:
IDBConnectionProxy(IDBConnectionToServer&, PAL::SessionID);
Ref<IDBOpenDBRequest> openDatabase(ScriptExecutionContext&, const IDBDatabaseIdentifier&, uint64_t version);
void didOpenDatabase(const IDBResultData&);
Ref<IDBOpenDBRequest> deleteDatabase(ScriptExecutionContext&, const IDBDatabaseIdentifier&);
void didDeleteDatabase(const IDBResultData&);
void createObjectStore(TransactionOperation&, const IDBObjectStoreInfo&);
void deleteObjectStore(TransactionOperation&, const String& objectStoreName);
void clearObjectStore(TransactionOperation&, IDBObjectStoreIdentifier);
void createIndex(TransactionOperation&, const IDBIndexInfo&);
void deleteIndex(TransactionOperation&, IDBObjectStoreIdentifier, const String& indexName);
void putOrAdd(TransactionOperation&, IDBKeyData&&, const IDBValue&, const IndexIDToIndexKeyMap&, const IndexedDB::ObjectStoreOverwriteMode);
void getRecord(TransactionOperation&, const IDBGetRecordData&);
void getAllRecords(TransactionOperation&, const IDBGetAllRecordsData&);
void getCount(TransactionOperation&, const IDBKeyRangeData&);
void deleteRecord(TransactionOperation&, const IDBKeyRangeData&);
void openCursor(TransactionOperation&, const IDBCursorInfo&);
void iterateCursor(TransactionOperation&, const IDBIterateCursorData&);
void renameObjectStore(TransactionOperation&, IDBObjectStoreIdentifier, const String& newName);
void renameIndex(TransactionOperation&, IDBObjectStoreIdentifier, IDBIndexIdentifier, const String& newName);
void fireVersionChangeEvent(IDBDatabaseConnectionIdentifier, const IDBResourceIdentifier& requestIdentifier, uint64_t requestedVersion);
void didFireVersionChangeEvent(IDBDatabaseConnectionIdentifier, const IDBResourceIdentifier& requestIdentifier, const IndexedDB::ConnectionClosedOnBehalfOfServer = IndexedDB::ConnectionClosedOnBehalfOfServer::No);
void notifyOpenDBRequestBlocked(const IDBResourceIdentifier& requestIdentifier, uint64_t oldVersion, uint64_t newVersion);
void openDBRequestCancelled(const IDBOpenRequestData&);
void establishTransaction(IDBTransaction&);
void commitTransaction(IDBTransaction&, uint64_t handledRequestResultsCount);
void abortTransaction(IDBTransaction&);
void didStartTransaction(const IDBResourceIdentifier& transactionIdentifier, const IDBError&);
void didCommitTransaction(const IDBResourceIdentifier& transactionIdentifier, const IDBError&);
void didAbortTransaction(const IDBResourceIdentifier& transactionIdentifier, const IDBError&);
void didFinishHandlingVersionChangeTransaction(IDBDatabaseConnectionIdentifier, IDBTransaction&);
void databaseConnectionPendingClose(IDBDatabase&);
void databaseConnectionClosed(IDBDatabase&);
void didCloseFromServer(IDBDatabaseConnectionIdentifier, const IDBError&);
void connectionToServerLost(const IDBError&);
void abortOpenAndUpgradeNeeded(IDBDatabaseConnectionIdentifier, const std::optional<IDBResourceIdentifier>& transactionIdentifier);
void completeOperation(const IDBResultData&);
IDBConnectionIdentifier serverConnectionIdentifier() const { return m_serverConnectionIdentifier; }
void ref();
void deref();
void getAllDatabaseNamesAndVersions(ScriptExecutionContext&, Function<void(std::optional<Vector<IDBDatabaseNameAndVersion>>&&)>&&);
void didGetAllDatabaseNamesAndVersions(const IDBResourceIdentifier&, std::optional<Vector<IDBDatabaseNameAndVersion>>&&);
void registerDatabaseConnection(IDBDatabase&, ScriptExecutionContextIdentifier);
void unregisterDatabaseConnection(IDBDatabase&);
void forgetActiveOperations(const Vector<RefPtr<TransactionOperation>>&);
void forgetTransaction(IDBTransaction&);
void abortActivitiesForCurrentThread();
void setContextSuspended(ScriptExecutionContext& currentContext, bool isContextSuspended);
PAL::SessionID sessionID() const;
private:
void completeOpenDBRequest(const IDBResultData&);
bool hasRecordOfTransaction(const IDBTransaction&) const WTF_REQUIRES_LOCK(m_transactionMapLock);
void saveOperation(TransactionOperation&);
std::pair<RefPtr<IDBDatabase>, std::optional<ScriptExecutionContextIdentifier>> databaseFromConnectionIdentifier(IDBDatabaseConnectionIdentifier);
template<typename... Parameters, typename... Arguments>
void callConnectionOnMainThread(void (IDBConnectionToServer::*method)(Parameters...), Arguments&&... arguments)
{
if (isMainThread())
(m_connectionToServer.get().*method)(std::forward<Arguments>(arguments)...);
else
postMainThreadTask(m_connectionToServer.get(), method, arguments...);
}
template<typename... Arguments>
void postMainThreadTask(Arguments&&... arguments)
{
auto task = createCrossThreadTask(arguments...);
m_mainThreadQueue.append(WTFMove(task));
scheduleMainThreadTasks();
}
void scheduleMainThreadTasks();
void handleMainThreadTasks();
CheckedRef<IDBConnectionToServer> m_connectionToServer;
IDBConnectionIdentifier m_serverConnectionIdentifier;
Lock m_databaseConnectionMapLock;
Lock m_openDBRequestMapLock;
Lock m_transactionMapLock;
Lock m_transactionOperationLock;
Lock m_databaseInfoMapLock;
Lock m_mainThreadTaskLock;
struct WeakIDBDatabase {
ThreadSafeWeakPtr<IDBDatabase> database;
std::optional<ScriptExecutionContextIdentifier> contextIdentifier;
};
HashMap<IDBDatabaseConnectionIdentifier, WeakIDBDatabase> m_databaseConnectionMap WTF_GUARDED_BY_LOCK(m_databaseConnectionMapLock);
HashMap<IDBResourceIdentifier, RefPtr<IDBOpenDBRequest>> m_openDBRequestMap WTF_GUARDED_BY_LOCK(m_openDBRequestMapLock);
HashMap<IDBResourceIdentifier, RefPtr<IDBTransaction>> m_pendingTransactions WTF_GUARDED_BY_LOCK(m_transactionMapLock);
HashMap<IDBResourceIdentifier, RefPtr<IDBTransaction>> m_committingTransactions WTF_GUARDED_BY_LOCK(m_transactionMapLock);
HashMap<IDBResourceIdentifier, RefPtr<IDBTransaction>> m_abortingTransactions WTF_GUARDED_BY_LOCK(m_transactionMapLock);
HashMap<IDBResourceIdentifier, RefPtr<TransactionOperation>> m_activeOperations WTF_GUARDED_BY_LOCK(m_transactionOperationLock);
HashMap<IDBResourceIdentifier, Ref<IDBDatabaseNameAndVersionRequest>> m_databaseInfoCallbacks WTF_GUARDED_BY_LOCK(m_databaseInfoMapLock);
CrossThreadQueue<CrossThreadTask> m_mainThreadQueue;
RefPtr<IDBConnectionToServer> m_mainThreadProtector WTF_GUARDED_BY_LOCK(m_mainThreadTaskLock);
PAL::SessionID m_sessionID;
};
} // namespace IDBClient
} // namespace WebCore
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