def GetRepositoriesString(self):
"""Returns information about images in the local Docker repositories.
Returns:
str: human readable list of images in local Docker repositories.
Raises:
errors.BadStorageException: If required files or directories are not found
in the provided Docker directory.
"""
repositories = []
if self.docker_version == 1:
repositories = [os.path.join(self.docker_directory, 'repositories-aufs')]
else:
image_path = os.path.join(self.docker_directory, 'image')
if not os.path.isdir(image_path):
raise errors.BadStorageException(
'Expected image directory {0} does not exist.'.format(image_path))
for storage_method in os.listdir(image_path):
repositories_file_path = os.path.join(
image_path, storage_method, 'repositories.json')
if os.path.isfile(repositories_file_path):
repositories.append(repositories_file_path)
result = []
for repositories_file_path in sorted(repositories):
with open(repositories_file_path) as rf:
repo_obj = json.loads(rf.read())
repo_obj['path'] = repositories_file_path
result.append(repo_obj)
return utils.PrettyPrintJSON(result)
def testPrettyPrintJSON(self):
"""Tests the utils.PrettyPrintJSON function."""
test_dict = {'test': [{'dict1': {'key1': 'val1'}, 'dict2': None}]}
test_json = json.dumps(test_dict)
expected_string = ('{\n "test": [\n {\n "dict1": {\n'
' "key1": "val1"\n }, \n'
' "dict2": null\n }\n ]\n}')
self.assertEqual(expected_string, utils.PrettyPrintJSON(test_json))
def ShowContainers(self, only_running=False):
"""Displays the running containers.
Args:
only_running (bool): Whether we display only running Containers.
"""
print(utils.PrettyPrintJSON(
self.GetContainersJson(only_running=only_running)))
def ShowHistory(self, container_id, show_empty_layers=False):
"""Prints the modification history of a container.
Args:
container_id (str): the ID of the container.
show_empty_layers (bool): whether to display empty layers.
"""
container_object = self.GetContainer(container_id)
print(utils.PrettyPrintJSON(container_object.GetHistory(show_empty_layers)))
def ShowRepositories(self):
"""Returns information about the images in the Docker repository.
Returns:
str: human readable information about image repositories.
"""
repositories_file_path = os.path.join(
self.docker_directory, 'image', self.STORAGE_METHOD,
'repositories.json')
if self.docker_version == 1:
repositories_file_path = os.path.join(
self.docker_directory, 'repositories-aufs')
result_string = (
'Listing repositories from file {0:s}').format(repositories_file_path)
with open(repositories_file_path) as rf:
repositories_string = rf.read()
return result_string + utils.PrettyPrintJSON(repositories_string)