def test_parse_basic_remote_manifest():
manifest = OCIManifest(Bytes.for_string_or_unicode(SAMPLE_REMOTE_MANIFEST))
assert not manifest.is_manifest_list
assert (
manifest.digest ==
"sha256:dd18ed87a00474aff683cee7160771e043f1f0eadd780232715bc0678a984a5e"
)
assert manifest.blob_digests == [
"sha256:9834876dcfb05cb167a5c24953eba58c4ac89b1adf57f28f2f9d09af107ee8f0",
"sha256:3c3a4604a545cdc127456d94e421cd355bca5b528f4a9c1905b15da2eb4a4c6b",
"sha256:ec4b8955958665577945c89419d1af06b5f7636b4ac3da7f12184802ad867736",
"sha256:b5b2b2c507a0944348e0303114d8d93aaaa081732b86451d9bce1f432a537bc7",
]
assert manifest.local_blob_digests == [
"sha256:9834876dcfb05cb167a5c24953eba58c4ac89b1adf57f28f2f9d09af107ee8f0",
"sha256:ec4b8955958665577945c89419d1af06b5f7636b4ac3da7f12184802ad867736",
"sha256:b5b2b2c507a0944348e0303114d8d93aaaa081732b86451d9bce1f432a537bc7",
]
assert len(manifest.filesystem_layers) == 3
assert (
str(manifest.leaf_filesystem_layer.digest) ==
"sha256:ec4b8955958665577945c89419d1af06b5f7636b4ac3da7f12184802ad867736"
)
assert manifest.has_remote_layer
assert not manifest.has_legacy_image
assert not manifest.get_legacy_image_ids(None)
def test_get_schema1_manifest():
retriever = ContentRetrieverForTesting.for_config(
{
"config": {
"Labels": {
"foo": "bar",
},
},
"rootfs": {
"type": "layers",
"diff_ids": []
},
"history": [
{
"created": "2018-04-03T18:37:09.284840891Z",
"created_by": "foo"
},
{
"created": "2018-04-12T18:37:09.284840891Z",
"created_by": "bar"
},
{
"created": "2018-04-03T18:37:09.284840891Z",
"created_by": "foo"
},
],
"architecture":
"amd64",
"os":
"linux",
},
"sha256:b5b2b2c507a0944348e0303114d8d93aaaa081732b86451d9bce1f432a537bc7",
7023,
)
manifest = OCIManifest(Bytes.for_string_or_unicode(SAMPLE_MANIFEST))
assert manifest.get_manifest_labels(retriever) == {
"com.example.key1": "value1",
"com.example.key2": "value2",
"foo": "bar",
}
schema1 = manifest.get_schema1_manifest("somenamespace", "somename",
"sometag", retriever)
assert schema1 is not None
assert schema1.media_type == DOCKER_SCHEMA1_MANIFEST_CONTENT_TYPE
assert set(
schema1.local_blob_digests
) == (set(manifest.local_blob_digests) - {
"sha256:b5b2b2c507a0944348e0303114d8d93aaaa081732b86451d9bce1f432a537bc7"
})
assert len(schema1.layers) == 3
via_convert = manifest.convert_manifest([schema1.media_type],
"somenamespace", "somename",
"sometag", retriever)
assert via_convert.digest == schema1.digest
def parse_manifest_from_bytes(manifest_bytes, media_type, validate=True):
"""
Parses and returns a manifest from the given bytes, for the given media type.
Raises a ManifestException if the parse fails for some reason.
"""
assert isinstance(manifest_bytes, Bytes)
if media_type == DOCKER_SCHEMA2_MANIFEST_CONTENT_TYPE:
return DockerSchema2Manifest(manifest_bytes)
if media_type == DOCKER_SCHEMA2_MANIFESTLIST_CONTENT_TYPE:
return DockerSchema2ManifestList(manifest_bytes)
if media_type == OCI_IMAGE_MANIFEST_CONTENT_TYPE:
return OCIManifest(manifest_bytes)
if media_type == OCI_IMAGE_INDEX_CONTENT_TYPE:
return OCIIndex(manifest_bytes)
if media_type in DOCKER_SCHEMA1_CONTENT_TYPES:
return DockerSchema1Manifest(manifest_bytes, validate=validate)
raise ManifestException("Unknown or unsupported manifest media type `%s`" %
media_type)
def test_parse_basic_manifest():
manifest = OCIManifest(Bytes.for_string_or_unicode(SAMPLE_MANIFEST))
assert not manifest.is_manifest_list
assert (
manifest.digest ==
"sha256:855b4e9ce4a4e5121dbc51a4f7ebfe7c2d6bcd16b159e754224f44573cfed5c2"
)
assert manifest.blob_digests == [
"sha256:9834876dcfb05cb167a5c24953eba58c4ac89b1adf57f28f2f9d09af107ee8f0",
"sha256:3c3a4604a545cdc127456d94e421cd355bca5b528f4a9c1905b15da2eb4a4c6b",
"sha256:ec4b8955958665577945c89419d1af06b5f7636b4ac3da7f12184802ad867736",
"sha256:b5b2b2c507a0944348e0303114d8d93aaaa081732b86451d9bce1f432a537bc7",
]
assert manifest.local_blob_digests == manifest.blob_digests
assert len(manifest.filesystem_layers) == 3
assert (
str(manifest.leaf_filesystem_layer.digest) ==
"sha256:ec4b8955958665577945c89419d1af06b5f7636b4ac3da7f12184802ad867736"
)
assert not manifest.has_remote_layer
assert manifest.has_legacy_image
assert manifest.annotations == {
"com.example.key1": "value1",
"com.example.key2": "value2"
}
def test_get_schema1_manifest_incorrect_history():
retriever = ContentRetrieverForTesting.for_config(
{
"config": {
"Labels": {
"foo": "bar",
},
},
"rootfs": {
"type": "layers",
"diff_ids": []
},
"history": [
{
"created": "2018-04-03T18:37:09.284840891Z",
"created_by": "foo"
},
{
"created": "2018-04-03T18:37:09.284840891Z",
"created_by": "foo"
},
],
"architecture":
"amd64",
"os":
"linux",
},
"sha256:b5b2b2c507a0944348e0303114d8d93aaaa081732b86451d9bce1f432a537bc7",
7023,
)
manifest = OCIManifest(Bytes.for_string_or_unicode(SAMPLE_MANIFEST))
assert manifest.get_manifest_labels(retriever) == {
"com.example.key1": "value1",
"com.example.key2": "value2",
"foo": "bar",
}
with pytest.raises(MalformedOCIManifest):
manifest.get_schema1_manifest("somenamespace", "somename", "sometag",
retriever)
def test_validate_manifest_invalid_config_type():
manifest_bytes = """{
"schemaVersion": 2,
"config": {
"mediaType": "application/some.other.thing",
"digest": "sha256:6bd578ec7d1e7381f63184dfe5fbe7f2f15805ecc4bfd485e286b76b1e796524",
"size": 145
},
"layers": [
{
"mediaType": "application/tar+gzip",
"digest": "sha256:ce879e86a8f71031c0f1ab149a26b000b3b5b8810d8d047f240ef69a6b2516ee",
"size": 2807
}
]
}"""
with pytest.raises(MalformedOCIManifest):
OCIManifest(Bytes.for_string_or_unicode(manifest_bytes))
def test_validate_helm_oci_manifest():
manifest_bytes = """{
"schemaVersion":2,
"config":{
"mediaType":"application/vnd.cncf.helm.config.v1+json",
"digest":"sha256:65a07b841ece031e6d0ec5eb948eacb17aa6d7294cdeb01d5348e86242951487",
"size":141
},
"layers": [
{
"mediaType":"application/tar+gzip",
"digest":"sha256:d84c9c29e0899862a0fa0f73da4d9f8c8c38e2da5d3258764aa7ba74bb914718",
"size":3562
}
]
}"""
HELM_CHART_CONFIG_TYPE = "application/vnd.cncf.helm.config.v1+json"
HELM_CHART_LAYER_TYPES = ["application/tar+gzip"]
register_artifact_type(HELM_CHART_CONFIG_TYPE, HELM_CHART_LAYER_TYPES)
manifest = OCIManifest(Bytes.for_string_or_unicode(manifest_bytes))