def resolve_uri_contents(uri: URI, fingerprint: bool = None) -> bytes:
resolvable_backends = get_resolvable_backends_for_uri(uri)
if resolvable_backends:
for backend in resolvable_backends:
try:
# type ignored to handle case if URI is returned
contents: bytes = backend().fetch_uri_contents(
uri) # type: ignore
except CannotHandleURI:
continue
return contents
translatable_backends = get_translatable_backends_for_uri(uri)
if translatable_backends:
if fingerprint:
raise CannotHandleURI(
"Registry URIs must point to a resolvable content-addressed URI."
)
package_id = RegistryURIBackend().fetch_uri_contents(uri)
return resolve_uri_contents(package_id, True)
raise CannotHandleURI(
f"URI: {uri} cannot be resolved by any of the available backends.")
def test_get_resolvable_backends_for_supported_uris(dummy_ipfs_backend, uri, backends):
good_backends = get_resolvable_backends_for_uri(uri)
assert good_backends == backends