old_contents: import logging
  from dbaas_nfsaas.models import HostAttr
  from util import get_credentials_for
  
  LOG = logging.getLogger(__name__)
  
  
  def get_faas_provider(environment):
      from dbaas_nfsaas.dbaas_api import DatabaseAsAServiceApi
      from dbaas_nfsaas.faas_provider import Provider
      from dbaas_credentials.models import CredentialType
  
      faas_credentials = get_credentials_for(
          environment=environment,
          credential_type=CredentialType.FAAS
      )
      dbaas_api = DatabaseAsAServiceApi(credentials=faas_credentials)
      return Provider(dbaas_api, HostAttr)
  
  
  def create_disk(enviroment, host, plan):
      provider = get_faas_provider(enviroment)
  
      LOG.info("Creating NFS disk...")
      disk = provider.create_export(
          host=host, size_kb=plan.disk_offering.size_kb
      )
  
      LOG.info(
          "Creating NFS access to disk: {}".format(disk.nfsaas_path_host)
      )
      provider.create_access(
          export_path=disk.nfsaas_path_host, address=host.address
      )
  
      return disk
  
  
  def delete_disk(environment, host):
      provider = get_faas_provider(environment)
  
      LOG.info("Destroying NFS export...")
      for disk in HostAttr.objects.filter(host=host):
          if not provider.delete_export(disk.nfsaas_path_host):
              return False
      return True
  
new_contents: import logging
  from dbaas_credentials.models import CredentialType
  from dbaas_nfsaas.models import HostAttr
  from dbaas_nfsaas.dbaas_api import DatabaseAsAServiceApi
  from dbaas_nfsaas.faas_provider import Provider
  from util import get_credentials_for
  
  LOG = logging.getLogger(__name__)
  
  
  def get_faas_provider(environment):
  
      faas_credentials = get_credentials_for(
          environment=environment,
          credential_type=CredentialType.FAAS
      )
      dbaas_api = DatabaseAsAServiceApi(credentials=faas_credentials)
      return Provider(dbaas_api, HostAttr)
  
  
  def create_disk(enviroment, host, plan):
      provider = get_faas_provider(enviroment)
  
      LOG.info("Creating NFS disk...")
      disk = provider.create_export(
          host=host, size_kb=plan.disk_offering.size_kb
      )
  
      LOG.info(
          "Creating NFS access to disk: {}".format(disk.nfsaas_path_host)
      )
      provider.create_access(
          export_path=disk.nfsaas_path_host, address=host.address
      )
  
      return disk
  
  
  def delete_disk(environment, host):
      provider = get_faas_provider(environment)
  
      LOG.info("Destroying NFS export...")
      for disk in HostAttr.objects.filter(host=host):
          if not provider.delete_export(disk.nfsaas_path_host):
              return False
      return True
  
subject: Improve code nfsaas_util