static void loadTable(
Context & context,
const String & database_metadata_path,
DatabaseOrdinary & database,
const String & database_name,
const String & database_data_path,
const String & file_name)
{
Logger * log = &Logger::get("loadTable");
const String table_metadata_path = database_metadata_path + "/" + file_name;
String s;
{
char in_buf[METADATA_FILE_BUFFER_SIZE];
ReadBufferFromFile in(table_metadata_path, METADATA_FILE_BUFFER_SIZE, -1, in_buf);
WriteBufferFromString out(s);
copyData(in, out);
}
/** Пустые файлы с метаданными образуются после грубого перезапуска сервера.
* Удаляем эти файлы, чтобы чуть-чуть уменьшить работу админов по запуску.
*/
if (s.empty())
{
LOG_ERROR(log, "File " << table_metadata_path << " is empty. Removing.");
Poco::File(table_metadata_path).remove();
return;
}
try
{
String table_name;
StoragePtr table;
std::tie(table_name, table) = createTableFromDefinition(
s, database_name, database_data_path, context, "in file " + table_metadata_path);
database.attachTable(table_name, table);
}
catch (const Exception & e)
{
throw Exception("Cannot create table from metadata file " + table_metadata_path + ", error: " + e.displayText() +
", stack trace:\n" + e.getStackTrace().toString(),
ErrorCodes::CANNOT_CREATE_TABLE_FROM_METADATA);
}
}
static void loadTable(
Context & context,
const String & database_metadata_path,
DatabaseOrdinary & database,
const String & database_name,
const String & database_data_path,
const String & file_name,
bool has_force_restore_data_flag)
{
Logger * log = &Logger::get("loadTable");
const String table_metadata_path = database_metadata_path + "/" + file_name;
String s;
{
char in_buf[METADATA_FILE_BUFFER_SIZE];
ReadBufferFromFile in(table_metadata_path, METADATA_FILE_BUFFER_SIZE, -1, in_buf);
readStringUntilEOF(s, in);
}
/** Empty files with metadata are generated after a rough restart of the server.
* Remove these files to slightly reduce the work of the admins on startup.
*/
if (s.empty())
{
LOG_ERROR(log, "File " << table_metadata_path << " is empty. Removing.");
Poco::File(table_metadata_path).remove();
return;
}
try
{
String table_name;
StoragePtr table;
std::tie(table_name, table) = createTableFromDefinition(
s, database_name, database_data_path, context, has_force_restore_data_flag, "in file " + table_metadata_path);
database.attachTable(table_name, table);
}
catch (const Exception & e)
{
throw Exception("Cannot create table from metadata file " + table_metadata_path + ", error: " + e.displayText() +
", stack trace:\n" + e.getStackTrace().toString(),
ErrorCodes::CANNOT_CREATE_TABLE_FROM_METADATA);
}
}