def __init__(self, docker_directory, container_id, docker_version=2):
"""Initializes the Container class.
Args:
docker_directory (str): the absolute path to the Docker directory.
container_id (str): the container ID.
docker_version (int): (Optional) the version of the Docker storage module.
Raises:
errors.BadContainerException: if there was an error when parsing
container_info_json_path
"""
self.container_config_filename = 'config.v2.json'
if docker_version == 1:
self.container_config_filename = 'config.json'
self.docker_directory = docker_directory
container_info_json_path = os.path.join(
self.docker_directory, 'containers', container_id,
self.container_config_filename)
with open(container_info_json_path) as container_info_json_file:
container_info_dict = json.load(container_info_json_file)
if container_info_dict is None:
raise errors.BadContainerException(
'Could not load container configuration file {0}'.format(
container_info_json_path)
)
self.container_id = container_info_dict.get('ID', None)
json_config = container_info_dict.get('Config', None)
if json_config:
self.config_image_name = json_config.get('Image', None)
self.config_labels = json_config.get('Labels', None)
self.creation_timestamp = container_info_dict.get('Created', None)
self.image_id = container_info_dict.get('Image', None)
self.mount_id = None
self.mount_points = container_info_dict.get('MountPoints', None)
self.name = container_info_dict.get('Name', '')
json_state = container_info_dict.get('State', None)
if json_state:
self.running = json_state.get('Running', False)
self.start_timestamp = json_state.get('StartedAt', False)
self.storage_driver = container_info_dict.get('Driver', None)
if self.storage_driver is None:
raise errors.BadContainerException(
'{0} container config file lacks Driver key'.format(
container_info_json_path))
self.volumes = container_info_dict.get('Volumes', None)
if docker_version == 2:
c_path = os.path.join(
self.docker_directory, 'image', self.storage_driver, 'layerdb',
'mounts', container_id)
with open(os.path.join(c_path, 'mount-id')) as mount_id_file:
self.mount_id = mount_id_file.read()
def _SetStorage(self, storage_name):
"""Sets the storage_object attribute.
Args:
storage_name (str): the name of the storage.
Returns:
BaseStorage: a storage object.
Raises:
BadContainerException: if no storage Driver is defined, or if it is not
implemented
"""
storage_class = self.STORAGES_MAP.get(storage_name, None)
if storage_class is None:
raise errors.BadContainerException(
'Storage driver {0} is not implemented'.format(storage_name))
self.storage_object = storage_class(self.docker_directory,
self.docker_version)
def __init__(self, docker_directory, container_id, docker_version=2):
"""Initializes the Container class.
Args:
docker_directory (str): the absolute path to the Docker directory.
container_id (str): the container ID.
docker_version (int): (Optional) the version of the Docker storage module.
Raises:
errors.BadContainerException: if there was an error when parsing
container_info_json_path
"""
self.docker_version = docker_version
self.container_config_filename = 'config.v2.json'
if self.docker_version == 1:
self.container_config_filename = 'config.json'
self.docker_directory = docker_directory
container_info_json_path = os.path.join(self.docker_directory,
'containers', container_id,
self.container_config_filename)
if not os.path.isfile(container_info_json_path):
raise errors.BadContainerException(
'Unable to find container configuration file: '
f'{container_info_json_path}')
with open(container_info_json_path,
encoding='utf-8') as container_info_json_file:
container_info_dict = json.load(container_info_json_file)
if container_info_dict is None:
raise errors.BadContainerException(
'Could not load container configuration file: '
f'{container_info_json_path}')
self.container_id = container_info_dict.get('ID', None)
# Parse the 'Config' key, which relates to the Image configuration
self.config_image_name = self._GetConfigValue(container_info_dict,
'Image')
self.config_labels = self._GetConfigValue(container_info_dict,
'Labels')
self.creation_timestamp = container_info_dict.get('Created', None)
self.image_id = container_info_dict.get('Image', None)
self.mount_id = None
self.mount_points = container_info_dict.get('MountPoints', None)
self.name = container_info_dict.get('Name', '')
json_state = container_info_dict.get('State', None)
if json_state:
self.running = json_state.get('Running', False)
self.start_timestamp = json_state.get('StartedAt', False)
self.storage_name = container_info_dict.get('Driver', None)
if self.storage_name is None:
raise errors.BadContainerException(
f'{container_info_json_path} container config file lacks Driver key'
)
self.upper_dir = None
self.volumes = container_info_dict.get('Volumes', None)
self.exposed_ports = self._GetConfigValue(container_info_dict,
'ExposedPorts')
self._SetStorage(self.storage_name)
if self.docker_version == 2:
c_path = os.path.join(self.docker_directory, 'image',
self.storage_name, 'layerdb', 'mounts',
container_id)
mount_id_path = os.path.join(c_path, 'mount-id')
with open(mount_id_path, encoding='utf-8') as mount_id_file:
self.mount_id = mount_id_file.read()
if self.storage_name in ['overlay', 'overlay2']:
self.upper_dir = os.path.join(self.storage_object.docker_directory,
self.storage_object.STORAGE_METHOD,
self.mount_id,
self.storage_object.UPPERDIR_NAME)
self.log_path = container_info_dict.get('LogPath', None)