old_contents: # -*- coding: utf-8 -*-
  
  
  class DatabaseAsAServiceApi(object):
      def __init__(self, databaseinfra, credentials):
          self.databaseinfra = databaseinfra
          self.credentials = credentials
  
      @property
      def user(self):
          return self.credentials.user
  
      @property
      def password(self):
          return self.credentials.password
  
      @property
      def endpoint(self):
          return self.credentials.endpoint
  
      @property
      def main_clientgroup(self):
          return self.credentials.get_parameter_by_name("main_clientgroup")
  
      @property
      def extra_clientgroup(self):
          return self.credentials.get_parameter_by_name("extra_clientgroup")
  
      def extra_parameters(self, group):
          return self.credentials.get_parameters_by_group(group)
  
      @property
      def alarm_notes(self):
          return self.credentials.get_parameter_by_name("alarm_notes")
  
      @property
      def instances(self):
          return self.databaseinfra.instances.all()
  
      @property
      def driver(self):
          return self.databaseinfra.get_driver()
  
      @property
      def database_instances(self):
          return self.driver.get_database_instances()
  
      @property
      def non_database_instances(self):
          return self.driver.get_non_database_instances()
  
      @property
      def hosts(self):
          return list({instance.hostname for instance in self.instances})
  
      @property
      def databaseifra_name(self):
          return self.databaseinfra.name
  
      @property
      def mysql_infra_dns_from_endpoint_dns(self):
          return self.databaseinfra.endpoint_dns(':')[0]
  
      @property
      def secondary_ips(self):
          return self.databaseinfra.cs_dbinfra_attributes.all()
  
      @property
      def is_ha(self):
          return self.databaseinfra.plan.is_ha
  
      @property
      def engine_name(self):
          return self.databaseinfra.engine.engine_type.name
  
      @property
      def engine_version(self):
          return self.databaseinfra.engine.version
  
new_contents: # -*- coding: utf-8 -*-
  
  
  class DatabaseAsAServiceApi(object):
      def __init__(self, databaseinfra, credentials):
          self.databaseinfra = databaseinfra
          self.credentials = credentials
  
      @property
      def user(self):
          return self.credentials.user
  
      @property
      def password(self):
          return self.credentials.password
  
      @property
      def endpoint(self):
          return self.credentials.endpoint
  
      @property
      def main_clientgroup(self):
          return self.credentials.get_parameter_by_name("main_clientgroup")
  
      @property
      def extra_clientgroup(self):
          return self.credentials.get_parameter_by_name("extra_clientgroup")
  
      def extra_parameters(self, group):
          return self.credentials.get_parameters_by_group(group)
  
      @property
      def alarm_notes(self):
          return self.credentials.get_parameter_by_name("alarm_notes")
  
      @property
      def instances(self):
          return self.databaseinfra.instances.all()
  
      @property
      def driver(self):
          return self.databaseinfra.get_driver()
  
      @property
      def database_instances(self):
          return self.driver.get_database_instances()
  
      @property
      def non_database_instances(self):
          return self.driver.get_non_database_instances()
  
      @property
      def hosts(self):
          return list({instance.hostname for instance in self.instances})
  
      @property
      def databaseifra_name(self):
          return self.databaseinfra.name
  
      @property
      def mysql_infra_dns_from_endpoint_dns(self):
          return self.databaseinfra.endpoint_dns.split(':')[0]
  
      @property
      def secondary_ips(self):
          return self.databaseinfra.cs_dbinfra_attributes.all()
  
      @property
      def is_ha(self):
          return self.databaseinfra.plan.is_ha
  
      @property
      def engine_name(self):
          return self.databaseinfra.engine.engine_type.name
  
      @property
      def engine_version(self):
          return self.databaseinfra.engine.version
  
subject: fix bug