def force_delete_ledger(ledger_name):
try:
set_deletion_protection(ledger_name, False)
delete_ledger(ledger_name)
wait_for_deleted(ledger_name)
except Exception:
pass
def main(ledger_name=LEDGER_NAME):
"""
Demonstrate the protection of QLDB ledgers against deletion.
"""
try:
create_with_deletion_protection(ledger_name)
wait_for_active(ledger_name)
try:
delete_ledger(ledger_name)
except qldb_client.exceptions.ResourcePreconditionNotMetException:
logger.info(
'Ledger protected against deletions! Turning off deletion protection now.'
)
set_deletion_protection(ledger_name, False)
delete_ledger(ledger_name)
except Exception as e:
logger.exception('Error while updating or deleting the ledger!')
raise e
def create_with_deletion_protection(ledger_name):
"""
Create a new ledger with the specified name and with deletion protection enabled.
:type ledger_name: str
:param ledger_name: Name for the ledger to be created.
:rtype: dict
:return: Result from the request.
"""
logger.info("Let's create the ledger with name: {}...".format(ledger_name))
result = qldb_client.create_ledger(Name=ledger_name, PermissionsMode='ALLOW_ALL')
logger.info('Success. Ledger state: {}'.format(result.get('State')))
return result
if __name__ == '__main__':
"""
Demonstrate the protection of QLDB ledgers against deletion.
"""
try:
create_with_deletion_protection(LEDGER_NAME)
wait_for_active(LEDGER_NAME)
try:
delete_ledger(LEDGER_NAME)
except qldb_client.exceptions.ResourcePreconditionNotMetException:
logger.info('Ledger protected against deletions! Turning off deletion protection now.')
set_deletion_protection(LEDGER_NAME, False)
delete_ledger(LEDGER_NAME)
except Exception:
logger.exception('Error while updating or deleting the ledger!')