def test_get_uncompressed_image_layer_sizes_multiple_entries_in_manifest_json(
self, tmpdir):
image_util = imageutil.ImageUtil(util.DockerfileImages([]),
self.config)
path = Path(tmpdir) / 'tarball.tar'
manifest_file_content = (
'[{"Config":"62700350851fb36b2e770ba33639e9d111616d39fc63da8845a5e53e9ad013de.json",'
'"RepoTags":[],'
'"Layers":["92538e92de2938d7c4e279f871107b835bf0c8cc76a5a1655d66855706da18b0.tar"'
',"eb7bf34352ca9ba2fb0218870ac3c47b76d0b1fb7d50543d3ecfa497eca242b0.tar",'
'"6da3b8e0475dcc80515944d0cc3f699429248df6b040f8dd7711e681387185e8.tar",'
'"07adb74645fe71dec6917e5caca489018edf7ed94f29ac74398eca89c1b9458b.tar"]}, '
'{"Config": "ec3f0931a6e6b6855d76b2d7b0be30e81860baccd891b2e243280bf1cd8ad711.json"'
', "RepoTags": [], '
'"Layers": ["d31505fd5050f6b96ca3268d1db58fc91ae561ddf14eaabc41d63ea2ef8c1c6e.tar"]}]'
).encode('utf-8')
mock_files = {
"manifest.json": {
"content": manifest_file_content,
"size": len(manifest_file_content),
},
}
mock_tarball(tarball_path=path, files=mock_files)
with pytest.raises(
ValueError,
match=
"manifest.json file has multiple entries, expected only one"):
image_util.get_uncompressed_image_layer_sizes(path=path)
def test_extract_filesystem_layer(self, tmpdir):
image_util = imageutil.ImageUtil(util.DockerfileImages([]),
self.config)
src_path = Path(tmpdir) / 'tarball.tar'
dst_path = Path(tmpdir) / 'dst'
expected_layer_filename = 'd31505fd5050f6b96ca3268d1db58fc91ae561ddf14eaabc41d63ea2ef8c1c6d.tar' # noqa
manifest_file_content = (
'[{"Config": "ec3f0931a6e6b6855d76b2d7b0be30e81860baccd891b2e243280bf1cd8ad710.json"'
', "RepoTags": [], '
'"Layers": ["d31505fd5050f6b96ca3268d1db58fc91ae561ddf14eaabc41d63ea2ef8c1c6d.tar"]}]'
).encode('utf-8')
mocked_files = {
'manifest.json': {
'content': manifest_file_content,
'size': len(manifest_file_content)
},
expected_layer_filename: {
'content': None,
'size': 1
}
}
mock_tarball(tarball_path=src_path, files=mocked_files)
actual_layer_filename = image_util.extract_filesystem_layer(
src_path, dst_path)
assert actual_layer_filename == expected_layer_filename
assert (dst_path / expected_layer_filename).exists()
def test_get_inspect_for_image_not_inspectable(self, df_images):
"""Test that passing a non-inspectable image raises an error."""
image_util = imageutil.ImageUtil(df_images, self.config)
custom_image = ImageName.parse("koji/image-build")
with pytest.raises(ValueError, match=r"ImageName\(.*\) is not inspectable"):
image_util.get_inspect_for_image(custom_image)
def test_extract_filesystem_layer_multiple_entries_in_manifest_json(
self, tmpdir):
image_util = imageutil.ImageUtil(util.DockerfileImages([]),
self.config)
src_path = Path(tmpdir) / 'tarball.tar'
dst_path = Path(tmpdir) / 'dst'
expected_layer_filename = 'd31505fd5050f6b96ca3268d1db58fc91ae561ddf14eaabc41d63ea2ef8c1c6d.tar' # noqa
manifest_file_content = (
'[{"Config": "ec3f0931a6e6b6855d76b2d7b0be30e81860baccd891b2e243280bf1cd8ad710.json"'
', "RepoTags": [], '
'"Layers": ["d31505fd5050f6b96ca3268d1db58fc91ae561ddf14eaabc41d63ea2ef8c1c6d.tar"]},'
'{"Config": "ec3f0931a6e6b6855d76b2d7b0be30e81860baccd891b2e243280bf1cd8ad711.json"'
', "RepoTags": [], '
'"Layers": ["d31505fd5050f6b96ca3268d1db58fc91ae561ddf14eaabc41d63ea2ef8c1c6e.tar"]}]'
).encode("utf-8")
mocked_files = {
'manifest.json': {
'content': manifest_file_content,
'size': len(manifest_file_content)
},
expected_layer_filename: {
'content': None,
'size': 1
}
}
mock_tarball(tarball_path=src_path, files=mocked_files)
with pytest.raises(
ValueError,
match=
"manifest.json file has multiple entries, expected only one"):
image_util.extract_filesystem_layer(src_path, dst_path)
def test_base_image_inspect(self, platform, df_images):
"""Test that base_image_inspect just calls get_inspect_for_image with the right args."""
image_util = imageutil.ImageUtil(df_images, self.config)
(flexmock(image_util).should_receive("get_inspect_for_image")
# base image in df_images
.with_args(ImageName.parse("registry.com/fedora:35"),
platform).once().and_return(self.inspect_data))
assert image_util.base_image_inspect(platform) == self.inspect_data
def imageutil(self) -> imageutil.ImageUtil:
"""Get an ImageUtil instance.
The property is lazy, subsequent calls will return the same instance. This is important
for performance reasons (ImageUtil caches registry queries, a new instance would not have
the cache).
"""
return imageutil.ImageUtil(self.data.dockerfile_images, self.conf)
def test_download_image_archive_tarball(self):
image_util = imageutil.ImageUtil(util.DockerfileImages([]),
self.config)
image = 'registry.com/fedora:35'
path = '/tmp/path'
(flexmock(retries).should_receive("run_cmd").with_args(
['skopeo', 'copy', f'docker://{image}',
f'docker-archive:{path}']).once())
image_util.download_image_archive_tarball(image=image, path=path)
def test_get_inspect_for_image_specific_platform(self, platform, expect_goarch, df_images):
"""Test that get_inspect_for_image handles the platform to goarch mapping properly."""
image_util = imageutil.ImageUtil(df_images, self.config)
image = ImageName.parse("registry.com/some-image:1")
# main check: expect_arch
self.mock_get_registry_client(image, expect_arch=expect_goarch)
assert image_util.get_inspect_for_image(image, platform) == self.inspect_data
# should hit cache regardless of whether you pass a platform or a goarch
assert image_util.get_inspect_for_image(image, expect_goarch) == self.inspect_data
def test_extract_file_from_image_non_empty_dst_dir(self, tmpdir):
image_util = imageutil.ImageUtil(util.DockerfileImages([]), self.config)
image = 'registry.com/fedora:35'
src_path = '/path/to/file'
dst_path = Path(tmpdir) / 'dst_dir'
dst_path.mkdir()
file = dst_path / 'somefile.txt'
file.touch()
with pytest.raises(NonEmptyDestinationError,
match=f'the destination directory {dst_path} must be empty'):
image_util.extract_file_from_image(image=image, src_path=src_path,
dst_path=str(dst_path))
def test_get_inspect_for_image(self, df_images):
"""Test get_inspect_for_image and its caching behavior."""
image_util = imageutil.ImageUtil(df_images, self.config)
image = ImageName.parse("registry.com/some-image:1")
self.mock_get_registry_client(image, expect_arch=None)
assert image_util.get_inspect_for_image(image) == self.inspect_data
# check caching (the registry client mock expects its method to be called exactly once,
# if imageutil didn't cache the result, it would get called twice)
assert image_util.get_inspect_for_image(image) == self.inspect_data
image_as_str = image.to_str()
# should hit cache regardless of whether you pass a string or an ImageName
assert image_util.get_inspect_for_image(image_as_str) == self.inspect_data
def test_get_registry_client(self):
"""Test the method that makes a RegistryClient (other tests mock this method)."""
image_util = imageutil.ImageUtil(util.DockerfileImages([]),
self.config)
registry_session = flexmock()
(flexmock(util.RegistrySession).should_receive(
"create_from_config").with_args(
self.config,
"registry.com").once().and_return(registry_session))
flexmock(util.RegistryClient).should_receive("__init__").with_args(
registry_session).once()
image_util._get_registry_client("registry.com")
# test caching (i.e. test that the create_from_config method is called only once)
image_util._get_registry_client("registry.com")
def test_extract_filesystem_layer_more_than_one_layer_fail(self, tmpdir):
image_util = imageutil.ImageUtil(util.DockerfileImages([]),
self.config)
src_path = Path(tmpdir) / 'tarball.tar'
dst_path = Path(tmpdir) / 'dst'
manifest_file_content = (
'[{"Config":"62700350851fb36b2e770ba33639e9d111616d39fc63da8845a5e53e9ad013de.json",'
'"RepoTags":[],'
'"Layers":["92538e92de2938d7c4e279f871107b835bf0c8cc76a5a1655d66855706da18b0.tar"'
',"eb7bf34352ca9ba2fb0218870ac3c47b76d0b1fb7d50543d3ecfa497eca242b0.tar",'
'"6da3b8e0475dcc80515944d0cc3f699429248df6b040f8dd7711e681387185e8.tar",'
'"07adb74645fe71dec6917e5caca489018edf7ed94f29ac74398eca89c1b9458b.tar"]}]'
).encode('utf-8')
mocked_files = {
"92538e92de2938d7c4e279f871107b835bf0c8cc76a5a1655d66855706da18b0.tar":
{
"content": None,
"size": 1,
},
"eb7bf34352ca9ba2fb0218870ac3c47b76d0b1fb7d50543d3ecfa497eca242b0.tar":
{
"content": None,
"size": 2,
},
"6da3b8e0475dcc80515944d0cc3f699429248df6b040f8dd7711e681387185e8.tar":
{
"content": None,
"size": 3,
},
"07adb74645fe71dec6917e5caca489018edf7ed94f29ac74398eca89c1b9458b.tar":
{
"content": None,
"size": 4,
},
"manifest.json": {
"content": manifest_file_content,
"size": len(manifest_file_content),
},
}
mock_tarball(tarball_path=src_path, files=mocked_files)
with pytest.raises(
ValueError,
match=f'Tarball at {src_path} has more than 1 layer'):
image_util.extract_filesystem_layer(src_path, dst_path)
def test_extract_file_from_image_no_file_extracted(self, tmpdir):
image_util = imageutil.ImageUtil(util.DockerfileImages([]),
self.config)
image = 'registry.com/fedora:35'
src_path = '/path/to/file'
dst_path = Path(tmpdir) / 'dst_dir'
dst_path.mkdir()
(flexmock(retries).should_receive("run_cmd").with_args([
'oc', 'image', 'extract', image, '--path', f'{src_path}:{dst_path}'
]).once())
with pytest.raises(
ValueError,
match=
f"Extraction failed, files at path {src_path} not found in the image",
):
image_util.extract_file_from_image(image=image,
src_path=src_path,
dst_path=dst_path)
def test_extract_file_from_image_failed(self, tmpdir):
image_util = imageutil.ImageUtil(util.DockerfileImages([]),
self.config)
image = 'registry.com/fedora:35'
src_path = '/path/to/file'
dst_path = Path(tmpdir) / 'dst_dir'
dst_path.mkdir()
(flexmock(retries).should_receive("run_cmd").with_args([
'oc', 'image', 'extract', image, '--path', f'{src_path}:{dst_path}'
]).and_raise(
subprocess.CalledProcessError(1, ["oc", "..."],
output=b'something went wrong')))
with pytest.raises(
ExtractionError,
match="Image file extraction failed",
):
image_util.extract_file_from_image(image=image,
src_path=src_path,
dst_path=str(dst_path))
def test_extract_file_from_image(self, tmpdir):
image_util = imageutil.ImageUtil(util.DockerfileImages([]),
self.config)
image = 'registry.com/fedora:35'
src_path = '/path/to/file'
dst_path = Path(tmpdir) / 'dst_dir'
dst_path.mkdir()
# mock the functionality of oc image extract
# just creates a file in dst_path
def mock_extract_file(cmd):
file = dst_path / 'somefile.txt'
file.touch()
(flexmock(retries).should_receive("run_cmd").with_args([
'oc', 'image', 'extract', image, '--path', f'{src_path}:{dst_path}'
]).replace_with(mock_extract_file).once())
image_util.extract_file_from_image(image=image,
src_path=src_path,
dst_path=dst_path)
def test_get_uncompressed_image_layer_sizes(self, tmpdir):
image_util = imageutil.ImageUtil(util.DockerfileImages([]),
self.config)
path = Path(tmpdir) / 'tarball.tar'
manifest_file_content = (
'[{"Config":"62700350851fb36b2e770ba33639e9d111616d39fc63da8845a5e53e9ad013de.json",'
'"RepoTags":[],'
'"Layers":["92538e92de2938d7c4e279f871107b835bf0c8cc76a5a1655d66855706da18b0.tar"'
',"eb7bf34352ca9ba2fb0218870ac3c47b76d0b1fb7d50543d3ecfa497eca242b0.tar",'
'"6da3b8e0475dcc80515944d0cc3f699429248df6b040f8dd7711e681387185e8.tar",'
'"07adb74645fe71dec6917e5caca489018edf7ed94f29ac74398eca89c1b9458b.tar"]}]'
).encode('utf-8')
config_file_content = (
'{"rootfs": {"type": "layers", "diff_ids": '
'["sha256:92538e92de2938d7c4e279f871107b835bf0c8cc76a5a1655d66855706da18b0", '
'"sha256:eb7bf34352ca9ba2fb0218870ac3c47b76d0b1fb7d50543d3ecfa497eca242b0", '
'"sha256:6da3b8e0475dcc80515944d0cc3f699429248df6b040f8dd7711e681387185e8", '
'"sha256:07adb74645fe71dec6917e5caca489018edf7ed94f29ac74398eca89c1b9458b"]}}'
).encode("utf-8")
mock_files = {
"92538e92de2938d7c4e279f871107b835bf0c8cc76a5a1655d66855706da18b0.tar":
{
"content": None,
"size": 1,
},
"eb7bf34352ca9ba2fb0218870ac3c47b76d0b1fb7d50543d3ecfa497eca242b0.tar":
{
"content": None,
"size": 2,
},
"6da3b8e0475dcc80515944d0cc3f699429248df6b040f8dd7711e681387185e8.tar":
{
"content": None,
"size": 3,
},
"07adb74645fe71dec6917e5caca489018edf7ed94f29ac74398eca89c1b9458b.tar":
{
"content": None,
"size": 4,
},
"manifest.json": {
"content": manifest_file_content,
"size": len(manifest_file_content),
},
"62700350851fb36b2e770ba33639e9d111616d39fc63da8845a5e53e9ad013de.json":
{
"content": config_file_content,
"size": len(config_file_content),
},
}
mock_tarball(tarball_path=path, files=mock_files)
actual_data = image_util.get_uncompressed_image_layer_sizes(path=path)
expected_data = [
{
"diff_id":
"sha256:92538e92de2938d7c4e279f871107b835bf0c8cc76a5a1655d66855706da18b0", # noqa
"size": 1,
},
{
"diff_id":
"sha256:eb7bf34352ca9ba2fb0218870ac3c47b76d0b1fb7d50543d3ecfa497eca242b0", # noqa
"size": 2,
},
{
"diff_id":
"sha256:6da3b8e0475dcc80515944d0cc3f699429248df6b040f8dd7711e681387185e8", # noqa
"size": 3,
},
{
"diff_id":
"sha256:07adb74645fe71dec6917e5caca489018edf7ed94f29ac74398eca89c1b9458b", # noqa
"size": 4,
},
]
assert actual_data == expected_data
def test_base_image_inspect_not_inspectable(self, base_image):
"""Test that inspecting a non-inspectable base image returns an empty dict."""
image_util = imageutil.ImageUtil(util.DockerfileImages([base_image]),
self.config)
assert image_util.base_image_inspect() == {}
