IDBFactoryBackendLevelDB.cpp [plain text]
#include "config.h"
#include "IDBFactoryBackendLevelDB.h"
#include "DOMStringList.h"
#include "IDBBackingStoreLevelDB.h"
#include "IDBCursorBackend.h"
#include "IDBDatabaseBackend.h"
#include "IDBDatabaseException.h"
#include "IDBServerConnectionLevelDB.h"
#include "IDBTransactionBackend.h"
#include "IDBTransactionCoordinator.h"
#include "Logging.h"
#include "SecurityOrigin.h"
#if ENABLE(INDEXED_DATABASE) && USE(LEVELDB)
namespace WebCore {
template<typename K, typename M>
static void cleanWeakMap(HashMap<K, WeakPtr<M> >& map)
{
HashMap<K, WeakPtr<M> > other;
other.swap(map);
typename HashMap<K, WeakPtr<M> >::const_iterator iter = other.begin();
while (iter != other.end()) {
if (iter->value.get())
map.set(iter->key, iter->value);
++iter;
}
}
static String computeFileIdentifier(const SecurityOrigin& securityOrigin)
{
static const char levelDBFileSuffix[] = "@1";
return securityOrigin.databaseIdentifier() + levelDBFileSuffix;
}
static String computeUniqueIdentifier(const String& name, const SecurityOrigin& securityOrigin)
{
return computeFileIdentifier(securityOrigin) + name;
}
IDBFactoryBackendLevelDB::IDBFactoryBackendLevelDB(const String& databaseDirectory)
: m_databaseDirectory(databaseDirectory)
{
}
IDBFactoryBackendLevelDB::~IDBFactoryBackendLevelDB()
{
}
void IDBFactoryBackendLevelDB::removeIDBDatabaseBackend(const String& uniqueIdentifier)
{
ASSERT(m_databaseBackendMap.contains(uniqueIdentifier));
m_databaseBackendMap.remove(uniqueIdentifier);
}
void IDBFactoryBackendLevelDB::getDatabaseNames(PassRefPtr<IDBCallbacks> callbacks, const SecurityOrigin& openingOrigin, const SecurityOrigin&, ScriptExecutionContext*, const String& dataDirectory)
{
LOG(StorageAPI, "IDBFactoryBackendLevelDB::getDatabaseNames");
RefPtr<IDBBackingStoreLevelDB> backingStore = openBackingStore(openingOrigin, dataDirectory);
if (!backingStore) {
callbacks->onError(IDBDatabaseError::create(IDBDatabaseException::UnknownError, "Internal error opening backing store for indexedDB.webkitGetDatabaseNames."));
return;
}
RefPtr<DOMStringList> databaseNames = DOMStringList::create();
Vector<String> foundNames = backingStore->getDatabaseNames();
for (Vector<String>::const_iterator it = foundNames.begin(); it != foundNames.end(); ++it)
databaseNames->append(*it);
callbacks->onSuccess(databaseNames.release());
}
void IDBFactoryBackendLevelDB::deleteDatabase(const String& name, const SecurityOrigin& openingOrigin, const SecurityOrigin&, PassRefPtr<IDBCallbacks> callbacks, ScriptExecutionContext*, const String& dataDirectory)
{
LOG(StorageAPI, "IDBFactoryBackendLevelDB::deleteDatabase");
const String uniqueIdentifier = computeUniqueIdentifier(name, openingOrigin);
IDBDatabaseBackendMap::iterator it = m_databaseBackendMap.find(uniqueIdentifier);
if (it != m_databaseBackendMap.end()) {
it->value->deleteDatabase(callbacks);
return;
}
RefPtr<IDBBackingStoreLevelDB> backingStore = openBackingStore(openingOrigin, dataDirectory);
if (!backingStore) {
callbacks->onError(IDBDatabaseError::create(IDBDatabaseException::UnknownError, "Internal error opening backing store for indexedDB.deleteDatabase."));
return;
}
RefPtr<IDBServerConnection> serverConnection = IDBServerConnectionLevelDB::create(name, backingStore.get());
RefPtr<IDBDatabaseBackend> databaseBackend = IDBDatabaseBackend::create(name, uniqueIdentifier, this, *serverConnection);
if (databaseBackend) {
m_databaseBackendMap.set(uniqueIdentifier, databaseBackend.get());
databaseBackend->deleteDatabase(callbacks);
m_databaseBackendMap.remove(uniqueIdentifier);
} else
callbacks->onError(IDBDatabaseError::create(IDBDatabaseException::UnknownError, "Internal error creating database backend for indexedDB.deleteDatabase."));
}
PassRefPtr<IDBBackingStoreLevelDB> IDBFactoryBackendLevelDB::openBackingStore(const SecurityOrigin& securityOrigin, const String& dataDirectory)
{
const String fileIdentifier = computeFileIdentifier(securityOrigin);
const bool openInMemory = dataDirectory.isEmpty();
IDBBackingStoreLevelDBMap::iterator it2 = m_backingStoreMap.find(fileIdentifier);
if (it2 != m_backingStoreMap.end() && it2->value.get())
return it2->value.get();
RefPtr<IDBBackingStoreLevelDB> backingStore;
if (openInMemory)
backingStore = IDBBackingStoreLevelDB::openInMemory(fileIdentifier);
else
backingStore = IDBBackingStoreLevelDB::open(securityOrigin, dataDirectory, fileIdentifier);
if (backingStore) {
cleanWeakMap(m_backingStoreMap);
m_backingStoreMap.set(fileIdentifier, backingStore->createWeakPtr());
if (openInMemory)
m_sessionOnlyBackingStores.add(backingStore);
ASSERT(m_sessionOnlyBackingStores.isEmpty() || openInMemory);
return backingStore.release();
}
return 0;
}
void IDBFactoryBackendLevelDB::open(const String& name, uint64_t version, int64_t transactionId, PassRefPtr<IDBCallbacks> callbacks, PassRefPtr<IDBDatabaseCallbacks> databaseCallbacks, const SecurityOrigin& openingOrigin, const SecurityOrigin&)
{
LOG(StorageAPI, "IDBFactoryBackendLevelDB::open");
const String uniqueIdentifier = computeUniqueIdentifier(name, openingOrigin);
RefPtr<IDBDatabaseBackend> databaseBackend;
IDBDatabaseBackendMap::iterator it = m_databaseBackendMap.find(uniqueIdentifier);
if (it == m_databaseBackendMap.end()) {
RefPtr<IDBBackingStoreLevelDB> backingStore = openBackingStore(openingOrigin, m_databaseDirectory);
if (!backingStore) {
callbacks->onError(IDBDatabaseError::create(IDBDatabaseException::UnknownError, "Internal error opening backing store for indexedDB.open."));
return;
}
RefPtr<IDBServerConnection> serverConnection = IDBServerConnectionLevelDB::create(name, backingStore.get());
databaseBackend = IDBDatabaseBackend::create(name, uniqueIdentifier, this, *serverConnection);
if (databaseBackend)
m_databaseBackendMap.set(uniqueIdentifier, databaseBackend.get());
else {
callbacks->onError(IDBDatabaseError::create(IDBDatabaseException::UnknownError, "Internal error creating database backend for indexeddb.open."));
return;
}
} else
databaseBackend = it->value;
databaseBackend->openConnection(callbacks, databaseCallbacks, transactionId, version);
}
}
#endif // ENABLE(INDEXED_DATABASE) && USE(LEVELDB)