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/*
* Copyright (C) 2015 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.
*/
#ifndef UniqueIDBDatabase_h
#define UniqueIDBDatabase_h
#if ENABLE(INDEXED_DATABASE)
#include "IDBBackingStore.h"
#include "IDBBindingUtilities.h"
#include "IDBDatabaseIdentifier.h"
#include "IDBDatabaseInfo.h"
#include "IDBGetResult.h"
#include "ServerOpenDBRequest.h"
#include "ThreadSafeDataBuffer.h"
#include "Timer.h"
#include "UniqueIDBDatabaseConnection.h"
#include "UniqueIDBDatabaseTransaction.h"
#include <wtf/Deque.h>
#include <wtf/HashCountedSet.h>
#include <wtf/HashSet.h>
#include <wtf/ListHashSet.h>
#include <wtf/Ref.h>
#include <wtf/ThreadSafeRefCounted.h>
namespace WebCore {
class IDBError;
class IDBRequestData;
class IDBTransactionInfo;
namespace IndexedDB {
enum class IndexRecordType;
}
namespace IDBServer {
class IDBConnectionToClient;
class IDBServer;
typedef std::function<void(const IDBError&)> ErrorCallback;
typedef std::function<void(const IDBError&, const IDBKeyData&)> KeyDataCallback;
typedef std::function<void(const IDBError&, const IDBGetResult&)> GetResultCallback;
typedef std::function<void(const IDBError&, uint64_t)> CountCallback;
class UniqueIDBDatabase : public ThreadSafeRefCounted<UniqueIDBDatabase> {
public:
static Ref<UniqueIDBDatabase> create(IDBServer& server, const IDBDatabaseIdentifier& identifier)
{
return adoptRef(*new UniqueIDBDatabase(server, identifier));
}
WEBCORE_EXPORT ~UniqueIDBDatabase();
void openDatabaseConnection(IDBConnectionToClient&, const IDBRequestData&);
const IDBDatabaseInfo& info() const;
IDBServer& server() { return m_server; }
const IDBDatabaseIdentifier& identifier() const { return m_identifier; }
void createObjectStore(UniqueIDBDatabaseTransaction&, const IDBObjectStoreInfo&, ErrorCallback);
void deleteObjectStore(UniqueIDBDatabaseTransaction&, const String& objectStoreName, ErrorCallback);
void clearObjectStore(UniqueIDBDatabaseTransaction&, uint64_t objectStoreIdentifier, ErrorCallback);
void createIndex(UniqueIDBDatabaseTransaction&, const IDBIndexInfo&, ErrorCallback);
void deleteIndex(UniqueIDBDatabaseTransaction&, uint64_t objectStoreIdentifier, const String& indexName, ErrorCallback);
void putOrAdd(const IDBRequestData&, const IDBKeyData&, const ThreadSafeDataBuffer& valueData, IndexedDB::ObjectStoreOverwriteMode, KeyDataCallback);
void getRecord(const IDBRequestData&, const IDBKeyRangeData&, GetResultCallback);
void getCount(const IDBRequestData&, const IDBKeyRangeData&, CountCallback);
void deleteRecord(const IDBRequestData&, const IDBKeyRangeData&, ErrorCallback);
void openCursor(const IDBRequestData&, const IDBCursorInfo&, GetResultCallback);
void iterateCursor(const IDBRequestData&, const IDBKeyData&, unsigned long count, GetResultCallback);
void commitTransaction(UniqueIDBDatabaseTransaction&, ErrorCallback);
void abortTransaction(UniqueIDBDatabaseTransaction&, ErrorCallback);
void didFinishHandlingVersionChange(UniqueIDBDatabaseTransaction&);
void transactionDestroyed(UniqueIDBDatabaseTransaction&);
void connectionClosedFromClient(UniqueIDBDatabaseConnection&);
void didFireVersionChangeEvent(UniqueIDBDatabaseConnection&, const IDBResourceIdentifier& requestIdentifier);
void enqueueTransaction(Ref<UniqueIDBDatabaseTransaction>&&);
void handleDelete(IDBConnectionToClient&, const IDBRequestData&);
static JSC::VM& databaseThreadVM();
static JSC::ExecState& databaseThreadExecState();
private:
UniqueIDBDatabase(IDBServer&, const IDBDatabaseIdentifier&);
void handleDatabaseOperations();
void handleCurrentOperation();
void performCurrentOpenOperation();
void performCurrentDeleteOperation();
void addOpenDatabaseConnection(Ref<UniqueIDBDatabaseConnection>&&);
bool hasAnyOpenConnections() const;
void startVersionChangeTransaction();
void maybeNotifyConnectionsOfVersionChange();
void notifyCurrentRequestConnectionClosedOrFiredVersionChangeEvent(uint64_t connectionIdentifier);
bool isVersionChangeInProgress();
void activateTransactionInBackingStore(UniqueIDBDatabaseTransaction&);
void inProgressTransactionCompleted(const IDBResourceIdentifier&);
// Database thread operations
void deleteBackingStore(const IDBDatabaseIdentifier&);
void openBackingStore(const IDBDatabaseIdentifier&);
void performCommitTransaction(uint64_t callbackIdentifier, const IDBResourceIdentifier& transactionIdentifier);
void performAbortTransaction(uint64_t callbackIdentifier, const IDBResourceIdentifier& transactionIdentifier);
void beginTransactionInBackingStore(const IDBTransactionInfo&);
void performCreateObjectStore(uint64_t callbackIdentifier, const IDBResourceIdentifier& transactionIdentifier, const IDBObjectStoreInfo&);
void performDeleteObjectStore(uint64_t callbackIdentifier, const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier);
void performClearObjectStore(uint64_t callbackIdentifier, const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier);
void performCreateIndex(uint64_t callbackIdentifier, const IDBResourceIdentifier& transactionIdentifier, const IDBIndexInfo&);
void performDeleteIndex(uint64_t callbackIdentifier, const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier, uint64_t indexIdentifier);
void performPutOrAdd(uint64_t callbackIdentifier, const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier, const IDBKeyData&, const ThreadSafeDataBuffer& valueData, IndexedDB::ObjectStoreOverwriteMode);
void performGetRecord(uint64_t callbackIdentifier, const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier, const IDBKeyRangeData&);
void performGetIndexRecord(uint64_t callbackIdentifier, const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier, uint64_t indexIdentifier, IndexedDB::IndexRecordType, const IDBKeyRangeData&);
void performGetCount(uint64_t callbackIdentifier, const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier, uint64_t indexIdentifier, const IDBKeyRangeData&);
void performDeleteRecord(uint64_t callbackIdentifier, const IDBResourceIdentifier& transactionIdentifier, uint64_t objectStoreIdentifier, const IDBKeyRangeData&);
void performOpenCursor(uint64_t callbackIdentifier, const IDBResourceIdentifier& transactionIdentifier, const IDBCursorInfo&);
void performIterateCursor(uint64_t callbackIdentifier, const IDBResourceIdentifier& transactionIdentifier, const IDBResourceIdentifier& cursorIdentifier, const IDBKeyData&, unsigned long count);
void performActivateTransactionInBackingStore(uint64_t callbackIdentifier, const IDBTransactionInfo&);
// Main thread callbacks
void didDeleteBackingStore(uint64_t deletedVersion);
void didOpenBackingStore(const IDBDatabaseInfo&, const IDBError&);
void didPerformCreateObjectStore(uint64_t callbackIdentifier, const IDBError&, const IDBObjectStoreInfo&);
void didPerformDeleteObjectStore(uint64_t callbackIdentifier, const IDBError&, uint64_t objectStoreIdentifier);
void didPerformClearObjectStore(uint64_t callbackIdentifier, const IDBError&);
void didPerformCreateIndex(uint64_t callbackIdentifier, const IDBError&, const IDBIndexInfo&);
void didPerformDeleteIndex(uint64_t callbackIdentifier, const IDBError&, uint64_t objectStoreIdentifier, uint64_t indexIdentifier);
void didPerformPutOrAdd(uint64_t callbackIdentifier, const IDBError&, const IDBKeyData&);
void didPerformGetRecord(uint64_t callbackIdentifier, const IDBError&, const IDBGetResult&);
void didPerformGetCount(uint64_t callbackIdentifier, const IDBError&, uint64_t);
void didPerformDeleteRecord(uint64_t callbackIdentifier, const IDBError&);
void didPerformOpenCursor(uint64_t callbackIdentifier, const IDBError&, const IDBGetResult&);
void didPerformIterateCursor(uint64_t callbackIdentifier, const IDBError&, const IDBGetResult&);
void didPerformCommitTransaction(uint64_t callbackIdentifier, const IDBError&, const IDBResourceIdentifier& transactionIdentifier);
void didPerformAbortTransaction(uint64_t callbackIdentifier, const IDBError&, const IDBResourceIdentifier& transactionIdentifier);
void didPerformActivateTransactionInBackingStore(uint64_t callbackIdentifier, const IDBError&);
uint64_t storeCallback(ErrorCallback);
uint64_t storeCallback(KeyDataCallback);
uint64_t storeCallback(GetResultCallback);
uint64_t storeCallback(CountCallback);
void performErrorCallback(uint64_t callbackIdentifier, const IDBError&);
void performKeyDataCallback(uint64_t callbackIdentifier, const IDBError&, const IDBKeyData&);
void performGetResultCallback(uint64_t callbackIdentifier, const IDBError&, const IDBGetResult&);
void performCountCallback(uint64_t callbackIdentifier, const IDBError&, uint64_t);
bool hasAnyPendingCallbacks() const;
bool isCurrentlyInUse() const;
void invokeOperationAndTransactionTimer();
void operationAndTransactionTimerFired();
RefPtr<UniqueIDBDatabaseTransaction> takeNextRunnableTransaction(bool& hadDeferredTransactions);
IDBServer& m_server;
IDBDatabaseIdentifier m_identifier;
Deque<Ref<ServerOpenDBRequest>> m_pendingOpenDBRequests;
RefPtr<ServerOpenDBRequest> m_currentOpenDBRequest;
ListHashSet<RefPtr<UniqueIDBDatabaseConnection>> m_openDatabaseConnections;
HashSet<RefPtr<UniqueIDBDatabaseConnection>> m_closePendingDatabaseConnections;
RefPtr<UniqueIDBDatabaseConnection> m_versionChangeDatabaseConnection;
RefPtr<UniqueIDBDatabaseTransaction> m_versionChangeTransaction;
bool m_isOpeningBackingStore { false };
IDBError m_backingStoreOpenError;
std::unique_ptr<IDBBackingStore> m_backingStore;
std::unique_ptr<IDBDatabaseInfo> m_databaseInfo;
std::unique_ptr<IDBDatabaseInfo> m_mostRecentDeletedDatabaseInfo;
bool m_backingStoreSupportsSimultaneousTransactions { false };
bool m_backingStoreIsEphemeral { false };
HashMap<uint64_t, ErrorCallback> m_errorCallbacks;
HashMap<uint64_t, KeyDataCallback> m_keyDataCallbacks;
HashMap<uint64_t, GetResultCallback> m_getResultCallbacks;
HashMap<uint64_t, CountCallback> m_countCallbacks;
Timer m_operationAndTransactionTimer;
Deque<RefPtr<UniqueIDBDatabaseTransaction>> m_pendingTransactions;
HashMap<IDBResourceIdentifier, RefPtr<UniqueIDBDatabaseTransaction>> m_inProgressTransactions;
// The keys into these sets are the object store ID.
// These sets help to decide which transactions can be started and which must be deferred.
HashCountedSet<uint64_t> m_objectStoreTransactionCounts;
HashSet<uint64_t> m_objectStoreWriteTransactions;
bool m_deleteBackingStoreInProgress { false };
};
} // namespace IDBServer
} // namespace WebCore
#endif // ENABLE(INDEXED_DATABASE)
#endif // UniqueIDBDatabase_h
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