def init_db(self, txn=None):
"""Connect to database and create tables.
Parameters
----------
txn : sa.engine.Connection, optional
The transaction to execute in. If this is not provided, a new
transaction will be started with the engine provided.
Returns
-------
metadata : sa.MetaData
The metadata that describes the new assets db.
"""
with ExitStack() as stack:
if txn is None:
txn = stack.enter_context(self.engine.begin())
tables_already_exist = self._all_tables_present(txn)
# Create the SQL tables if they do not already exist.
metadata.create_all(txn, checkfirst=True)
if tables_already_exist:
check_version_info(txn, version_info, ASSET_DB_VERSION)
else:
write_version_info(txn, version_info, ASSET_DB_VERSION)
def init_db(self, txn=None):
"""Connect to database and create tables.
Parameters
----------
txn : sa.engine.Connection, optional
The transaction to execute in. If this is not provided, a new
transaction will be started with the engine provided.
Returns
-------
metadata : sa.MetaData
The metadata that describes the new assets db.
"""
with ExitStack() as stack:
if txn is None:
txn = stack.enter_context(self.engine.begin())
tables_already_exist = self._all_tables_present(txn)
# Create the SQL tables if they do not already exist.
metadata.create_all(txn, checkfirst=True)
if tables_already_exist:
check_version_info(txn, version_info, ASSET_DB_VERSION)
else:
write_version_info(txn, version_info, ASSET_DB_VERSION)
