quay/config_app/config_util/config/TransientDirectoryProvider.py

import os
from backports.tempfile import TemporaryDirectory

from config_app.config_util.config.fileprovider import FileConfigProvider
from config_app.config_util.k8saccessor import KubernetesAccessorSingleton


class TransientDirectoryProvider(FileConfigProvider):
  """ Implementation of the config provider that reads and writes the data
      from/to the file system, only using temporary directories,
      deleting old dirs and creating new ones as requested.
  """

  def __init__(self, config_volume, yaml_filename, py_filename):
    # Create a temp directory that will be cleaned up when we change the config path
    # This should ensure we have no "pollution" of different configs:
    # no uploaded config should ever affect subsequent config modifications/creations
    temp_dir = TemporaryDirectory()
    self.temp_dir = temp_dir
    super(TransientDirectoryProvider, self).__init__(temp_dir.name, yaml_filename, py_filename)

  @property
  def provider_id(self):
    return 'transient'

  def new_config_dir(self):
    """
    Update the path with a new temporary directory, deleting the old one in the process
    """
    self.temp_dir.cleanup()
    temp_dir = TemporaryDirectory()

    self.config_volume = temp_dir.name
    self.temp_dir = temp_dir
    self.yaml_path = os.path.join(temp_dir.name, self.yaml_filename)

  def get_config_dir_path(self):
    return self.config_volume

  def save_configuration_to_kubernetes(self):
    config_path = self.get_config_dir_path()

    for name in os.listdir(config_path):
      file_path = os.path.join(self.config_volume, name)
      KubernetesAccessorSingleton.get_instance().save_file_as_secret(name, file_path)

    return 200