def test_create_asset_with_different_secret_store(publisher_instance, ddo_sample):
acct = publisher_instance.main_account
asset = ddo_sample
my_secret_store = 'http://myownsecretstore.com'
auth_service = ServiceDescriptor.authorization_service_descriptor(
{'main': {'service': 'SecretStore', 'publicKey': '0casd',
'threshold': '1'}}, my_secret_store)
new_asset = publisher_instance.assets.create(asset.metadata, acct, [auth_service])
assert new_asset.get_service(ServiceTypes.AUTHORIZATION).service_endpoint == my_secret_store
assert new_asset.get_service(ServiceTypes.ASSET_ACCESS)
assert new_asset.get_service(ServiceTypes.METADATA)
publisher_instance.assets.retire(new_asset.did)
access_service = ServiceDescriptor.access_service_descriptor(
{"main": {
"name": "dataAssetAccessServiceAgreement",
"creator": '0x1234',
"price": '1',
"timeout": 3600,
"datePublished": '2019-08-30T12:19:54Z'
}}, ''
)
new_asset = publisher_instance.assets.create(asset.metadata, acct, [access_service])
assert new_asset.get_service(ServiceTypes.AUTHORIZATION)
assert new_asset.get_service(ServiceTypes.ASSET_ACCESS)
assert new_asset.get_service(ServiceTypes.METADATA)
publisher_instance.assets.retire(new_asset.did)
new_asset = publisher_instance.assets.create(asset.metadata, acct)
assert new_asset.get_service(ServiceTypes.AUTHORIZATION)
assert new_asset.get_service(ServiceTypes.ASSET_ACCESS)
assert new_asset.get_service(ServiceTypes.METADATA)
publisher_instance.assets.retire(new_asset.did)
def get_registered_ddo(account,
providers=None,
auth_service='PSK-RSA',
url=get_file_url()):
ddo = get_sample_ddo()
metadata = ddo['service'][0]['attributes']
metadata['main']['files'][0]['url'] = url
metadata['main']['files'][0]['checksum'] = str(uuid.uuid4())
escrow_payment_condition = ddo['service'][1]['attributes'][
'serviceAgreementTemplate']['conditions'][2]
_amounts = get_param_value_by_name(escrow_payment_condition['parameters'],
'_amounts')
_receivers = to_checksum_addresses(
get_param_value_by_name(escrow_payment_condition['parameters'],
'_receivers'))
access_service_attributes = {
"main": {
"name": "dataAssetAccessServiceAgreement",
"creator": account.address,
"price": metadata[MetadataMain.KEY]['price'],
"timeout": 3600,
"datePublished": metadata[MetadataMain.KEY]['dateCreated'],
"_amounts": _amounts,
"_receivers": _receivers
}
}
access_service_descriptor = ServiceDescriptor.access_service_descriptor(
access_service_attributes, 'http://localhost:8030')
return register_ddo(metadata, account, providers, auth_service,
[access_service_descriptor])
def get_registered_workflow_ddo(account,
compute_did,
algorithm_did,
providers=None,
auth_service='PSK-RSA'):
metadata = get_sample_workflow_ddo()['service'][0]['attributes']
metadata['main']['workflow']['stages'][0]['input'][0]['id'] = compute_did
metadata['main']['workflow']['stages'][0]['transformation'][
'id'] = algorithm_did
metadata['main']['workflow']['checksum'] = str(uuid.uuid4())
access_service_attributes = {
"main": {
"name": "dataAssetAccessServiceAgreement",
"creator": account.address,
"price": metadata[MetadataMain.KEY]['price'],
"timeout": 3600,
"datePublished": metadata[MetadataMain.KEY]['dateCreated']
}
}
access_service_descriptor = ServiceDescriptor.access_service_descriptor(
access_service_attributes, 'http://localhost:8030')
return register_ddo(metadata, account, providers, auth_service,
[access_service_descriptor])
def create_access_service(attributes, service_endpoint):
"""
Publish an asset with an `Access` service according to the supplied attributes.
:param attributes: attributes of the access service, dict
:param service_endpoint: str URL for initiating service access request
:return: Service instance or None
"""
service = ServiceDescriptor.access_service_descriptor(attributes, service_endpoint)
return service
def create(self,
metadata,
publisher_account,
service_descriptors=None,
providers=None,
authorization_type=ServiceAuthorizationTypes.PSK_RSA,
use_secret_store=False,
activity_id=None,
attributes=None,
asset_rewards={
"_amounts": [],
"_receivers": []
},
cap=None,
royalties=None):
"""
Register an asset in both the keeper's DIDRegistry (on-chain) and in the Metadata store.
:param metadata: dict conforming to the Metadata accepted by Nevermined Protocol.
:param publisher_account: Account of the publisher registering this asset
:param service_descriptors: list of ServiceDescriptor tuples of length 2.
The first item must be one of ServiceTypes and the second
item is a dict of parameters and values required by the service
:param providers: list of addresses of providers of this asset (a provider is
an ethereum account that is authorized to provide asset services)
:param authorization_type: str indicate the authorization type that is going to be used
to encrypt the urls.
SecretStore, PSK-RSA and PSK-ECDSA are supported.
:param use_secret_store: bool indicate whether to use the secret store directly for
encrypting urls (Uses Gateway provider service if set to False)
:param activity_id: identifier of the activity creating the new entity
:param attributes: attributes associated with the action
:param asset_rewards: rewards distribution including the amounts and the receivers
:param cap: max cap of nfts that can be minted for the asset
:param royalties: royalties in the secondary market going to the original creator
:return: DDO instance
"""
assert isinstance(
metadata,
dict), f'Expected metadata of type dict, got {type(metadata)}'
# copy metadata so we don't change the original
metadata_copy = copy.deepcopy(metadata)
# Create a DDO object
ddo = DDO()
gateway = GatewayProvider.get_gateway()
ddo_service_endpoint = self._get_metadata_provider(
).get_service_endpoint()
metadata_service_desc = ServiceDescriptor.metadata_service_descriptor(
metadata_copy, ddo_service_endpoint)
if metadata_copy['main']['type'] == 'dataset' or metadata_copy['main'][
'type'] == 'algorithm':
access_service_attributes = self._build_access(
metadata_copy, publisher_account, asset_rewards)
if not service_descriptors:
if authorization_type == ServiceAuthorizationTypes.PSK_RSA:
service_descriptors = [
ServiceDescriptor.authorization_service_descriptor(
self._build_authorization(
authorization_type,
public_key=gateway.get_rsa_public_key(
self._config)),
gateway.get_access_endpoint(self._config))
]
elif authorization_type == ServiceAuthorizationTypes.PSK_ECDSA:
service_descriptors = [
ServiceDescriptor.authorization_service_descriptor(
self._build_authorization(
authorization_type,
public_key=gateway.get_ecdsa_public_key(
self._config)),
gateway.get_access_endpoint(self._config))
]
else:
service_descriptors = [
ServiceDescriptor.authorization_service_descriptor(
self._build_authorization(authorization_type,
threshold=0),
self._config.secret_store_url)
]
service_descriptors += [
ServiceDescriptor.access_service_descriptor(
access_service_attributes,
gateway.get_access_endpoint(self._config))
]
else:
service_types = set(map(lambda x: x[0], service_descriptors))
if ServiceTypes.AUTHORIZATION not in service_types:
if authorization_type == ServiceAuthorizationTypes.PSK_RSA:
service_descriptors += [
ServiceDescriptor.authorization_service_descriptor(
self._build_authorization(
authorization_type,
public_key=gateway.get_rsa_public_key(
self._config)),
gateway.get_access_endpoint(self._config))
]
elif authorization_type == ServiceAuthorizationTypes.PSK_ECDSA:
service_descriptors += [
ServiceDescriptor.authorization_service_descriptor(
self._build_authorization(
authorization_type,
public_key=gateway.get_ecdsa_public_key(
self._config)),
gateway.get_access_endpoint(self._config))
]
else:
service_descriptors += [
ServiceDescriptor.authorization_service_descriptor(
self._build_authorization(authorization_type,
threshold=0),
self._config.secret_store_url)
]
else:
service_descriptors += [
ServiceDescriptor.access_service_descriptor(
access_service_attributes,
gateway.get_access_endpoint(self._config))
]
else:
if not service_descriptors:
service_descriptors = []
else:
service_descriptors += []
logger.info('registering a workflow.')
# Add all services to ddo
service_descriptors = [metadata_service_desc] + service_descriptors
services = ServiceFactory.build_services(service_descriptors)
checksums = dict()
for service in services:
checksums[str(service.index)] = checksum(service.main)
# Adding proof to the ddo.
ddo.add_proof(checksums, publisher_account)
# Generating the did and adding to the ddo.
did = ddo.assign_did(DID.did(ddo.proof['checksum']))
logger.debug(f'Generating new did: {did}')
# Check if it's already registered first!
if did in self._get_metadata_provider().list_assets():
raise DIDAlreadyExist(
f'Asset id {did} is already registered to another asset.')
for service in services:
if service.type == ServiceTypes.ASSET_ACCESS:
access_service = ServiceFactory.complete_access_service(
did, gateway.get_access_endpoint(self._config),
access_service_attributes,
self._keeper.access_template.address,
self._keeper.escrow_payment_condition.address)
ddo.add_service(access_service)
elif service.type == ServiceTypes.METADATA:
ddo_service_endpoint = service.service_endpoint.replace(
'{did}', did)
service.set_service_endpoint(ddo_service_endpoint)
ddo.add_service(service)
elif service.type == ServiceTypes.CLOUD_COMPUTE:
compute_service = ServiceFactory.complete_compute_service(
did, service.service_endpoint, service.attributes,
self._keeper.compute_execution_condition.address,
self._keeper.escrow_payment_condition.address)
ddo.add_service(compute_service)
else:
ddo.add_service(service)
ddo.proof['signatureValue'] = self._keeper.sign_hash(
add_ethereum_prefix_and_hash_msg(did_to_id_bytes(did)),
publisher_account)
# Add public key and authentication
ddo.add_public_key(did, publisher_account.address)
ddo.add_authentication(did, PUBLIC_KEY_TYPE_RSA)
# Setup metadata service
# First compute files_encrypted
if metadata_copy['main']['type'] in ['dataset', 'algorithm']:
assert metadata_copy['main'][
'files'], 'files is required in the metadata main attributes.'
logger.debug('Encrypting content urls in the metadata.')
if not use_secret_store:
encrypt_endpoint = gateway.get_encrypt_endpoint(self._config)
files_encrypted = gateway.encrypt_files_dict(
metadata_copy['main']['files'], encrypt_endpoint,
ddo.asset_id, authorization_type)
else:
files_encrypted = self._get_secret_store(publisher_account) \
.encrypt_document(
did_to_id(did),
json.dumps(metadata_copy['main']['files']),
)
# only assign if the encryption worked
if files_encrypted:
logger.debug(
f'Content urls encrypted successfully {files_encrypted}')
index = 0
for file in metadata_copy['main']['files']:
file['index'] = index
index = index + 1
del file['url']
metadata_copy['encryptedFiles'] = files_encrypted
else:
raise AssertionError('Encrypting the files failed.')
# DDO url and `Metadata` service
logger.debug(f'Generated ddo and services, DID is {ddo.did},'
f' metadata service @{ddo_service_endpoint}.')
response = None
# register on-chain
registered_on_chain = self._keeper.did_registry.register(
ddo.asset_id,
checksum=Web3Provider.get_web3().toBytes(hexstr=ddo.asset_id),
url=ddo_service_endpoint,
account=publisher_account,
cap=cap,
royalties=royalties,
providers=providers,
activity_id=activity_id,
attributes=attributes)
if registered_on_chain is False:
logger.warning(f'Registering {did} on-chain failed.')
return None
logger.info(f'Successfully registered DDO (DID={did}) on chain.')
try:
# publish the new ddo
response = self._get_metadata_provider().publish_asset_ddo(ddo)
logger.info('Asset/ddo published successfully in Metadata.')
except ValueError as ve:
raise ValueError(
f'Invalid value to publish in the metadata: {str(ve)}')
except Exception as e:
logger.error(f'Publish asset in Metadata failed: {str(e)}')
if not response:
return None
return ddo