def undo(self, workflow_dict):
LOG.info("Running undo...")
try:
target_instances = workflow_dict[
'databaseinfra'].instances.filter(future_instance=None)
target_instance_zero = target_instances[0]
source_instance_zero = workflow_dict['source_instances'][0]
source_instance_one = workflow_dict['source_instances'][1]
master_log_file, master_log_pos = get_replication_info(
source_instance_one)
change_master_to(instance=source_instance_zero,
master_host=source_instance_one.address,
bin_log_file=master_log_file,
bin_log_position=master_log_pos)
master_log_file, master_log_pos = get_replication_info(
source_instance_zero)
change_master_to(instance=target_instance_zero,
master_host=source_instance_zero.address,
bin_log_file=master_log_file,
bin_log_position=master_log_pos)
return True
except Exception:
traceback = full_stack()
workflow_dict['exceptions']['error_codes'].append(DBAAS_0020)
workflow_dict['exceptions']['traceback'].append(traceback)
return False
def do(self, workflow_dict):
try:
master_source_instance = workflow_dict['source_instances'][0]
master_target_instance = workflow_dict['source_instances'][0].future_instance
slave_target_instance = workflow_dict['source_instances'][1].future_instance
master_log_file, master_log_pos = get_replication_info(master_target_instance)
change_master_to(instance=master_target_instance,
master_host=master_source_instance.address,
bin_log_file=workflow_dict['binlog_file'],
bin_log_position=workflow_dict['binlog_pos'])
change_master_to(instance=slave_target_instance,
master_host=master_target_instance.address,
bin_log_file=master_log_file,
bin_log_position=master_log_pos)
return True
except Exception:
traceback = full_stack()
workflow_dict['exceptions']['error_codes'].append(DBAAS_0020)
workflow_dict['exceptions']['traceback'].append(traceback)
return False
def do(self, workflow_dict):
try:
master_source_instance = workflow_dict['source_instances'][0]
master_target_instance = workflow_dict['source_instances'][
0].future_instance
slave_target_instance = workflow_dict['source_instances'][
1].future_instance
master_log_file, master_log_pos = get_replication_info(
master_target_instance)
change_master_to(instance=master_target_instance,
master_host=master_source_instance.address,
bin_log_file=workflow_dict['binlog_file'],
bin_log_position=workflow_dict['binlog_pos'])
change_master_to(instance=slave_target_instance,
master_host=master_target_instance.address,
bin_log_file=master_log_file,
bin_log_position=master_log_pos)
return True
except Exception:
traceback = full_stack()
workflow_dict['exceptions']['error_codes'].append(DBAAS_0020)
workflow_dict['exceptions']['traceback'].append(traceback)
return False
def _change_master_to(self, instance, master):
log_file, log_position = get_replication_info(master)
change_master_to(instance, master.address, log_file, log_position)
