def resolve_install_uri(args: Namespace) -> ResolvedInstallURI:
registry_backend = RegistryURIBackend()
etherscan_backend = EtherscanURIBackend()
if etherscan_backend.can_translate_uri(args.uri):
manifest_uri = etherscan_backend.fetch_uri_contents(
args.uri, args.package_name, args.package_version)
registry_address = None
elif registry_backend.can_translate_uri(args.uri):
registry_address, _, _, _, _, _ = parse_registry_uri(args.uri)
manifest_uri = registry_backend.fetch_uri_contents(args.uri)
else:
manifest_uri = args.uri
registry_address = None
return ResolvedInstallURI(manifest_uri, registry_address)
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:
contents = backend().fetch_uri_contents(uri)
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) # type: ignore
raise CannotHandleURI(
f"URI: {uri} cannot be resolved by any of the available backends.")
def backend():
return RegistryURIBackend()