def setup_keeper(config_file=None):
config = Config(filename=config_file) if config_file else get_config()
keeper_url = config.keeper_url
artifacts_path = get_keeper_path(config)
ContractHandler.artifacts_path = artifacts_path
Web3Provider.get_web3(keeper_url)
init_account_envvars()
account = get_account(0)
if account is None:
raise AssertionError(
f'Nevermined Gateway cannot run without a valid '
f'ethereum account. Account address was not found in the environment'
f'variable `PROVIDER_ADDRESS`. Please set the following environment '
f'variables and try again: `PROVIDER_ADDRESS`, `PROVIDER_PASSWORD`, '
f', `PROVIDER_KEYFILE`, `RSA_KEYFILE` and `RSA_PASSWORD`.')
if not account.key_file and not (account.password and account.key_file):
raise AssertionError(
f'Nevermined Gateway cannot run without a valid '
f'ethereum account with either a password and '
f'keyfile/encrypted-key-string '
f'or private key. Current account has password {account.password}, '
f'keyfile {account.key_file}, encrypted-key {account._encrypted_key} '
f'and private-key {account._private_key}.')
def setup_all():
config = get_config()
keeper_url = config.keeper_url
Web3Provider.get_web3(keeper_url)
ContractHandler.artifacts_path = os.path.expanduser(
'~/.nevermined/nevermined-contracts/artifacts')
init_account_envvars()
def test_create_data_asset(publisher_instance, consumer_instance, ddo_sample):
"""
Setup accounts and asset, register this asset on Nevermined Metadata.
"""
logging.debug("".format())
##########################################################
# Setup 2 accounts
##########################################################
publisher_acct = publisher_instance.main_account
consumer_acct = consumer_instance.main_account
# ensure Nevermined token balance
if publisher_instance.accounts.balance(publisher_acct).ocn == 0:
rcpt = publisher_instance.accounts.request_tokens(publisher_acct, 200)
Web3Provider.get_web3().eth.waitForTransactionReceipt(rcpt)
if consumer_instance.accounts.balance(consumer_acct).ocn == 0:
rcpt = consumer_instance.accounts.request_tokens(consumer_acct, 200)
Web3Provider.get_web3().eth.waitForTransactionReceipt(rcpt)
# You will need some token to make this transfer!
assert publisher_instance.accounts.balance(publisher_acct).ocn > 0
assert consumer_instance.accounts.balance(consumer_acct).ocn > 0
##########################################################
# Create an Asset with valid metadata
##########################################################
asset = ddo_sample
##########################################################
# List currently published assets
##########################################################
meta_data_assets = publisher_instance.assets.search('')
if meta_data_assets:
print("Currently registered assets:")
print(meta_data_assets)
if asset.did in meta_data_assets:
publisher_instance.assets.resolve(asset.did)
publisher_instance.assets.retire(asset.did)
# Publish the metadata
new_asset = publisher_instance.assets.create(asset.metadata,
publisher_acct)
# get_asset_metadata only returns 'main' key, is this correct?
published_metadata = consumer_instance.assets.resolve(new_asset.did)
assert published_metadata
# only compare top level keys
assert sorted(list(
asset.metadata['main'].keys())).remove('files') == sorted(
list(published_metadata.metadata.keys())).remove('encryptedFiles')
publisher_instance.assets.retire(new_asset.did)
def _create_filter(self):
chain_id = Web3Provider.get_web3().net.version
from_block = 0
# temporary workaround to work with mumbai
# Infura has a 1000 block range limit in their api
if chain_id == '80001':
latest_block = Web3Provider.get_web3().eth.get_block_number()
from_block = latest_block - 990
self._filter = {
'fromBlock': from_block,
'toBlock': self.block_range[1],
'argument_filters': self.argument_filters
}
def _verify_service_agreement_signature(self, did, agreement_id, service_index,
consumer_address, signature, ddo=None):
"""
Verify service agreement signature.
Verify that the given signature is truly signed by the `consumer_address`
and represents this did's service agreement..
:param did: DID, str
:param agreement_id: id of the agreement, hex str
:param service_index: identifier of the service inside the asset DDO, str
:param consumer_address: ethereum account address of consumer, hex str
:param signature: Signature, str
:param ddo: DDO instance
:return: True if signature is legitimate, False otherwise
:raises: ValueError if service is not found in the ddo
:raises: AssertionError if conditions keys do not match the on-chain conditions keys
"""
if not ddo:
ddo = self._asset_resolver.resolve(did)
service_agreement = ddo.get_service_by_index(service_index)
agreement_hash = service_agreement.get_service_agreement_hash(
agreement_id, ddo.asset_id, consumer_address,
Web3Provider.get_web3().toChecksumAddress(ddo.proof['creator']), self._keeper)
recovered_address = self._keeper.personal_ec_recover(agreement_hash, signature)
is_valid = (recovered_address == consumer_address)
if not is_valid:
logger.warning(f'Agreement signature failed: agreement hash is {agreement_hash.hex()}')
return is_valid
def test_init_events_monitor(keeper, web3, storage_path, provider_account):
events_monitor = ProviderEventsMonitor(keeper, web3, storage_path,
provider_account)
assert events_monitor.last_n_blocks == events_monitor.LAST_N_BLOCKS
assert (Web3Provider.get_web3().eth.blockNumber -
events_monitor.latest_block) < 5
assert events_monitor.last_processed_block == 0
def get_network_id():
"""
Return the ethereum network id calling the `web3.version.network` method.
:return: Network id, int
"""
return int(Web3Provider.get_web3().net.version)
def get_registered_attribute(self, did_bytes):
"""
Example of event logs from event_filter.get_all_entries():
[AttributeDict(
{'args': AttributeDict(
{'did': b'\x02n\xfc\xfb\xfdNM\xe9\xb8\xe0\xba\xc2\xb2\xc7\xbeg\xc9/\x95\xc3\x16\
x98G^\xb9\xe1\xf0T\xce\x83\xcf\xab',
'owner': '0xAd12CFbff2Cb3E558303334e7e6f0d25D5791fc2',
'value': 'http://localhost:5000',
'checksum': '0x...',
'updatedAt': 1947}),
'event': 'DIDAttributeRegistered',
'logIndex': 0,
'transactionIndex': 1,
'transactionHash': HexBytes(
'0xea9ca5748d54766fb43fe9660dd04b2e3bb29a0fbe18414457cca3dd488d359d'),
'address': '0x86DF95937ec3761588e6DEbAB6E3508e271cC4dc',
'blockHash': HexBytes(
'0xbbbe1046b737f33b2076cb0bb5ba85a840c836cf1ffe88891afd71193d677ba2'),
'blockNumber': 1947})]
"""
result = None
did = Web3.toHex(did_bytes)
block_number = self.get_block_number_updated(did_bytes)
logger.debug(f'got blockNumber {block_number} for did {did}')
if block_number == 0:
raise DIDNotFound(
f'DID "{did}" is not found on-chain in the current did registry. '
f'Please ensure assets are registered in the correct keeper contracts. '
f'The keeper-contracts DIDRegistry address is {self.address}.'
f'Also ensure that sufficient time has passed after registering the asset '
f'such that the transaction is confirmed by the network validators.'
)
events = Web3Provider.get_web3().eth.getLogs({
'fromBlock':
block_number,
'toBlock':
block_number,
'address':
self.contract.address
})
event_data = self._filter_did_registered_events(did_bytes, events)
if event_data:
result = {
'checksum': event_data.args._checksum,
'value': event_data.args._value,
'block_number': block_number,
'did_bytes': event_data.args._did,
'owner': Web3.toChecksumAddress(event_data.args._owner),
}
else:
logger.warning(
f'Could not find {DIDRegistry.DID_REGISTRY_EVENT_NAME} event logs for '
f'did {did} at blockNumber {block_number}')
return result
def get_eth_from_faucet(config, address):
payload = {'address': Web3Provider.get_web3().toChecksumAddress(address), 'agent': 'sdk-py'}
response = Faucet._http_client.post(Faucet.get_faucet_url(config), data=payload, headers={'Accept': 'application/json'})
if not response.ok:
raise ValueError(response.text)
return response
def check(self, token):
"""
:param token: hex str consist of signature and timestamp
:return: hex str ethereum address
"""
parts = token.split('-')
if len(parts) < 2:
return '0x0'
sig, timestamp = parts
if self._get_timestamp() > (int(timestamp) + self._get_expiration()):
return '0x0'
message = self._get_message(timestamp)
address = self._keeper.personal_ec_recover(
Web3Provider.get_web3().keccak(text=message), sig)
return Web3Provider.get_web3().toChecksumAddress(address)
def get_ether_balance(address):
"""
Get balance of an ethereum address.
:param address: address, bytes32
:return: balance, int
"""
return Web3Provider.get_web3().eth.getBalance(
address, block_identifier='latest')
def unlock_account(account):
"""
Unlock the account.
:param account: Account
:return:
"""
return Web3Provider.get_web3().unlockAccount(account.address,
account.password)
def refund_reward(event, agreement_id, did, service_agreement, price,
consumer_account, publisher_address, condition_ids,
escrow_condition_id):
"""
Refund the reward to the publisher address.
:param event: AttributeDict with the event data.
:param agreement_id: id of the agreement, hex str
:param did: DID, str
:param service_agreement: ServiceAgreement instance
:param price: Asset price, int
:param consumer_account: Account instance of the consumer
:param publisher_address: ethereum account address of publisher, hex str
:param condition_ids: is a list of bytes32 content-addressed Condition IDs, bytes32
:param escrow_condition_id: hex str the id of escrow reward condition at this `agreement_id`
"""
logger.debug(
f"trigger refund (agreement {agreement_id}) after event {event}.")
if Keeper.get_instance().condition_manager.get_condition_state(
escrow_condition_id) > 1:
logger.debug(
f'escrow payment condition already fulfilled/aborted: '
f'agreementId={agreement_id}, escrow reward conditionId={escrow_condition_id},'
f' publisher={publisher_address}')
return
access_id, lock_id = condition_ids[:2]
name_to_parameter = {
param.name: param
for param in
service_agreement.condition_by_name['escrowPayment'].parameters
}
document_id = add_0x_prefix(name_to_parameter['_documentId'].value)
asset_id = add_0x_prefix(did_to_id(did))
did_owner = Keeper.get_instance(
).agreement_manager.get_agreement_did_owner(agreement_id)
assert document_id == asset_id, f'document_id {document_id} <=> asset_id {asset_id} mismatch.'
assert price == service_agreement.get_price(), 'price mismatch.'
try:
escrow_condition = Keeper.get_instance().escrow_payment_condition
tx_hash = escrow_condition.fulfill(
agreement_id, price,
Web3Provider.get_web3().toChecksumAddress(did_owner),
consumer_account.address, lock_id, access_id, consumer_account)
process_tx_receipt(
tx_hash,
getattr(escrow_condition.contract.events,
escrow_condition.FULFILLED_EVENT)(),
'EscrowReward.Fulfilled')
except Exception as e:
logger.error(
f'Error when doing escrow_payment_condition.fulfills (agreementId {agreement_id}): {e}',
exc_info=1)
raise e
def _load_from_address(address, abi, contract_name):
"""Retrieve the contract instance for `contract_name` that represent the smart
contract in the keeper network.
:param contract_name: str name of the solidity keeper contract without the network name.
:return: web3.eth.Contract instance
"""
address = Web3.toChecksumAddress(address)
contract = Web3Provider.get_web3().eth.contract(address=address,
abi=abi)
ContractHandler._contracts[contract_name] = (contract, 'external')
return ContractHandler._contracts[contract_name]
def used_by(provenance_id, did, consumer_address, activity_id, signature,
attributes, account, keeper):
try:
receipt = keeper.did_registry.used(
convert_to_bytes(provenance_id), convert_to_bytes(did),
convert_to_bytes(consumer_address),
convert_to_bytes(Web3Provider.get_web3().keccak(text=activity_id)),
signature, account, attributes)
return bool(receipt and receipt.status == 1)
except Exception as e:
logging.debug(f'On-chain call error: {e}')
return False
def get(self, account):
"""
:param account: Account instance signing the token
:return: hex str the token generated/signed by account
"""
_message, _time = self._get_message_and_time()
msg_hash = Web3Provider.get_web3().keccak(text=_message)
try:
prefixed_msg_hash = self._keeper.sign_hash(
add_ethereum_prefix_and_hash_msg(msg_hash), account)
return f'{prefixed_msg_hash}-{_time}'
except Exception as e:
logging.error(f'Error signing token: {str(e)}')
def sign_hash(msg_hash, account):
"""
This method use `personal_sign`for signing a message. This will always prepend the
`\x19Ethereum Signed Message:\n32` prefix before signing.
:param msg_hash:
:param account: Account
:return: signature
"""
wallet = Wallet(Web3Provider.get_web3(), account.key_file,
account.password, account.address)
s = wallet.sign(msg_hash)
return s.signature.hex()
def agreements():
publisher_acc = get_publisher_account()
keeper = Keeper.get_instance()
w3 = Web3Provider.get_web3()
did_resolver = Mock()
ddo = get_ddo_sample()
service = ddo.get_service(ServiceTypes.ASSET_ACCESS)
service.update_value(ServiceAgreementTemplate.TEMPLATE_ID_KEY,
w3.toChecksumAddress(publisher_acc.address))
did_resolver.resolve = MagicMock(return_value=ddo)
return Agreements(keeper, did_resolver, AssetConsumer, AssetExecutor,
ConfigProvider.get_config())
def fulfill_escrow_reward_condition(event, agreement_id, service_agreement,
price, consumer_address, publisher_account,
condition_ids, escrow_condition_id):
"""
:param event: AttributeDict with the event data.
:param agreement_id: id of the agreement, hex str
:param service_agreement: ServiceAgreement instance
:param price: Asset price, int
:param consumer_address: ethereum account address of consumer, hex str
:param publisher_account: Account instance of the publisher
:param condition_ids: is a list of bytes32 content-addressed Condition IDs, bytes32
:param escrow_condition_id: hex str the id of escrow reward condition at this `agreement_id`
:return:
"""
if not event:
logger.warning(f'`fulfill_escrow_reward_condition` got empty event: '
f'event listener timed out.')
return
keeper = Keeper.get_instance()
if keeper.condition_manager.get_condition_state(escrow_condition_id) > 1:
logger.debug(
f'escrow reward condition already fulfilled/aborted: '
f'agreementId={agreement_id}, escrow reward conditionId={escrow_condition_id}'
)
return
logger.debug(
f"release reward (agreement {agreement_id}) after event {event}.")
access_id, lock_id = condition_ids[:2]
logger.debug(f'fulfill_escrow_reward_condition: '
f'agreementId={agreement_id}'
f'price={price}, {type(price)}'
f'consumer={consumer_address},'
f'publisher={publisher_account.address},'
f'conditionIds={condition_ids}')
assert price == service_agreement.get_price(), 'price mismatch.'
assert isinstance(
price, int), f'price expected to be int type, got type "{type(price)}"'
time.sleep(5)
keeper = Keeper.get_instance()
did_owner = keeper.agreement_manager.get_agreement_did_owner(agreement_id)
args = (agreement_id, price,
Web3Provider.get_web3().toChecksumAddress(did_owner),
consumer_address, lock_id, access_id, publisher_account)
process_fulfill_condition(args, keeper.escrow_reward_condition,
escrow_condition_id, logger, keeper, 10)
def ec_recover(message, signed_message):
"""
This method does not prepend the message with the prefix `\x19Ethereum Signed Message:\n32`.
The caller should add the prefix to the msg/hash before calling this if the signature was
produced for an ethereum-prefixed message.
:param message:
:param signed_message:
:return:
"""
w3 = Web3Provider.get_web3()
v, r, s = split_signature(w3, w3.toBytes(hexstr=signed_message))
signature_object = SignatureFix(vrs=(v, big_endian_to_int(r),
big_endian_to_int(s)))
return w3.eth.account.recoverHash(
message, signature=signature_object.to_hex_v_hacked())
def send_transaction(self, fn_name, fn_args, transact=None):
"""Calls a smart contract function using either `personal_sendTransaction` (if
passphrase is available) or `ether_sendTransaction`.
:param fn_name: str the smart contract function name
:param fn_args: tuple arguments to pass to function above
:param transact: dict arguments for the transaction such as from, gas, etc.
:return:
"""
contract_fn = getattr(self.contract.functions, fn_name)(*fn_args)
contract_function = CustomContractFunction(
contract_fn
)
if transact is not None and 'chainId' not in transact:
transact['chainId'] = int(Web3Provider.get_web3().net.version)
return contract_function.transact(transact)
def was_associated_with(self,
prov_id,
did,
agent_id,
activity_id,
account,
attributes=None):
tx_hash = self.send_transaction(
'wasAssociatedWith',
(prov_id, did, agent_id, activity_id, attributes),
transact={
'from': account.address,
'passphrase': account.password,
'keyfile': account.key_file
})
return Web3Provider.get_web3().eth.waitForTransactionReceipt(
tx_hash, timeout=20)
def get_tx_receipt(tx_hash):
"""
Get the receipt of a tx.
:param tx_hash: hash of the transaction
:return: Tx receipt
"""
try:
tx_receipt = Web3Provider.get_web3().eth.waitForTransactionReceipt(tx_hash, timeout=20)
except Timeout:
logger.info('Waiting for transaction receipt timed out.')
return
except ValueError as e:
logger.error(f'Waiting for transaction receipt failed: {e}')
return
return tx_receipt
def _load(contract_name):
"""Retrieve the contract instance for `contract_name` that represent the smart
contract in the keeper network.
:param contract_name: str name of the solidity keeper contract without the network name.
:return: web3.eth.Contract instance
"""
assert ContractHandler.artifacts_path is not None, 'artifacts_path should be already set.'
contract_definition = ContractHandler.get_contract_dict_by_name(
contract_name, ContractHandler.artifacts_path)
address = Web3.toChecksumAddress(contract_definition['address'])
abi = contract_definition['abi']
contract = Web3Provider.get_web3().eth.contract(address=address,
abi=abi)
ContractHandler._contracts[contract_name] = (
contract, contract_definition['version'])
return ContractHandler._contracts[contract_name]
def process_tx_receipt(tx_hash, event_instance, event_name, agreement_id=None):
"""
Wait until the tx receipt is processed.
:param tx_hash: hash of the transaction
:param event_instance: instance of ContractEvent
:param event_name: name of the event to subscribe, str
:param agreement_id: hex str
:return:
"""
if not isinstance(tx_hash, bytes):
raise TypeError(f'first argument should be bytes type, '
f'got type {type(tx_hash)} and value {tx_hash}')
if not isinstance(event_instance, ContractEvent):
raise TypeError(f'second argument should be a ContractEvent, '
f'got {event_instance} of type {type(event_instance)}')
web3 = Web3Provider.get_web3()
try:
web3.eth.waitForTransactionReceipt(tx_hash, timeout=20)
except Timeout:
logger.info(f'Waiting for {event_name} transaction receipt timed out. '
f'Cannot verify receipt and event.')
return False
receipt = web3.eth.getTransactionReceipt(tx_hash)
event_logs = event_instance.processReceipt(receipt) if receipt else None
if event_logs:
logger.info(
f'Success: got {event_name} event after fulfilling condition.')
logger.debug(
f'Success: got {event_name} event after fulfilling condition. {receipt}, '
f'::: {event_logs}')
else:
logger.debug(
f'Something is not right, cannot find the {event_name} event after calling the'
f' fulfillment condition. This is the transaction receipt {receipt}'
)
if receipt and receipt.status == 0:
logger.warning(
f'Transaction failed: tx_hash {tx_hash.hex()}, tx event {event_name}, receipt '
f'{receipt}, id {agreement_id}')
return False
return True
def was_derived_from(self,
prov_id,
new_entity_did,
used_entity_did,
agent_id,
activity_id,
account,
attributes=None):
tx_hash = self.send_transaction(
'wasDerivedFrom', (prov_id, new_entity_did, used_entity_did,
agent_id, activity_id, attributes),
transact={
'from': account.address,
'passphrase': account.password,
'keyfile': account.key_file
})
return Web3Provider.get_web3().eth.waitForTransactionReceipt(
tx_hash, timeout=20)
def setup_nft_sales_agreements_environment():
consumer_acc = get_consumer_account()
publisher_acc = get_publisher_account()
keeper = Keeper.get_instance()
ddo = get_ddo_nft_sample()
did_seed = generate_prefixed_id()
asset_id = keeper.did_registry.hash_did(did_seed, publisher_acc.address)
ddo._did = DID.did(asset_id)
keeper.did_registry.register_mintable_did(
did_seed,
checksum=Web3Provider.get_web3().toBytes(hexstr=ddo.asset_id),
url='http://172.17.0.1:5000',
cap=10,
royalties=10,
account=publisher_acc,
providers=None)
keeper.did_registry.mint(ddo.asset_id, 10, account=publisher_acc)
service_agreement = ServiceAgreement.from_ddo(ServiceTypes.NFT_SALES, ddo)
agreement_id = ServiceAgreement.create_new_agreement_id()
price = service_agreement.get_price()
(access_cond_id, lock_cond_id,
escrow_cond_id) = service_agreement.generate_agreement_condition_ids(
agreement_id, asset_id, consumer_acc.address, keeper)
nft_access_service_agreement = ServiceAgreement.from_ddo(
ServiceTypes.NFT_ACCESS, ddo)
nft_access_agreement_id = ServiceAgreement.create_new_agreement_id()
(nft_access_cond_id, nft_holder_cond_id
) = nft_access_service_agreement.generate_agreement_condition_ids(
nft_access_agreement_id, asset_id, consumer_acc.address, keeper)
return (keeper, ddo, publisher_acc, consumer_acc, agreement_id,
nft_access_agreement_id, asset_id, price, service_agreement,
nft_access_service_agreement, (lock_cond_id, access_cond_id,
escrow_cond_id),
(nft_access_cond_id, nft_holder_cond_id))
def acted_on_behalf(self,
prov_id,
did,
delegate_agent_id,
responsible_agent_id,
activity_id,
signature,
account,
attributes=None):
tx_hash = self.send_transaction(
'actedOnBehalf',
(prov_id, did, delegate_agent_id, responsible_agent_id,
activity_id, signature, attributes),
transact={
'from': account.address,
'passphrase': account.password,
'keyfile': account.key_file
})
return Web3Provider.get_web3().eth.waitForTransactionReceipt(
tx_hash, timeout=20)
def test_sign_tx():
# account_address = '0x00Bd138aBD70e2F00903268F3Db08f2D25677C9e'
account = get_publisher_account()
wallet = Wallet(Web3Provider.get_web3(),
account.key_file,
account.password,
address=account.address)
tx_dict = {
'from':
'0x00Bd138aBD70e2F00903268F3Db08f2D25677C9e',
'to':
'0xc354ba9AD5dF1023C2640b14A09E61a500F21546',
'gas':
153432,
'data':
'0x534eb706ff3b98759dc7421dad1f42c4fbc00ceab99e4d849f884fa680398c8e65bcaf1a'
'3f4b0356b3399ae841a2c6fce00787cf27dcf08e3b3e65065fea2498e621848f0000000000'
'00000000000000000000000000000000000000000000000000008000000000000000000000'
'000000000000000000000000000000000000000000a0000000000000000000000000000000'
'00000000000000000000000000000000000000000000000000000000000000000000000000'
'000000000000000000000078687474703a2f2f6c6f63616c686f73743a353030302f617069'
'2f76312f61717561726975732f6173736574732f64646f2f6469643a6f703a666633623938'
'37353964633734323164616431663432633466626330306365616239396534643834396638'
'3834666136383033393863386536356263616631610000000000000000',
'nonce':
730,
'gasPrice':
1000000000
}
Wallet._last_tx_count[account.address] = tx_dict['nonce'] - 1
tx_hash = (
'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'
)
signed_tx = wallet.sign_tx(tx_dict)
assert signed_tx.hex() == tx_hash
def run_events_monitor():
setup_logging()
config = get_config()
keeper_url = config.keeper_url
storage_path = config.get('resources',
'storage.path',
fallback='./provider-events-monitor.db')
web3 = Web3Provider.get_web3(keeper_url)
ContractHandler.artifacts_path = get_keeper_path(config)
keeper = Keeper.get_instance()
init_account_envvars()
account = get_account(0)
if account is None:
raise AssertionError(
f'Provider events monitor cannot run without a valid '
f'ethereum account. Account address was not found in the environment'
f'variable `PROVIDER_ADDRESS`. Please set the following environment '
f'variables and try again: `PROVIDER_ADDRESS`, [`PROVIDER_PASSWORD`, '
f'and `PROVIDER_KEYFILE` or `PROVIDER_ENCRYPTED_KEY`] or `PROVIDER_KEY`.'
)
if not account.key_file and not (account.password and account.key_file):
raise AssertionError(
f'Provider events monitor cannot run without a valid '
f'ethereum account with either a `PROVIDER_PASSWORD` '
f'and `PROVIDER_KEYFILE`/`PROVIDER_ENCRYPTED_KEY` '
f'or private key `PROVIDER_KEY`. Current account has password {account.password}, '
f'keyfile {account.key_file}, encrypted-key {account._encrypted_key} '
f'and private-key {account._private_key}.')
monitor = ProviderEventsMonitor(keeper, web3, storage_path, account)
monitor.start_agreement_events_monitor()
while True:
time.sleep(5)
