def restore_or_init_snapshot(
storage: SerializedSQLiteStorage, node_address: Address,
initial_state: State) -> Tuple[State, StateChangeID, int]:
"""Restore the latest snapshot.
Returns the ULID of the state change that is not applied and the
accumulated number of state_changes applied to this snapshot so far. If
there is no snapshot the state will be primed with `initial_state`.
"""
state_change_identifier = HIGH_STATECHANGE_ULID
snapshot = storage.get_snapshot_before_state_change(
state_change_identifier=state_change_identifier)
if snapshot is not None:
log.debug(
"Snapshot found",
from_state_change_id=snapshot.state_change_identifier,
to_state_change_id=state_change_identifier,
node=to_checksum_address(node_address),
)
return snapshot.data, snapshot.state_change_identifier, snapshot.state_change_qty
else:
log.debug(
"No snapshot found, initializing the node state",
to_state_change_id=state_change_identifier,
node=to_checksum_address(node_address),
)
# The initial state must be saved to preserve the state of the PRNG
storage.write_first_state_snapshot(initial_state)
return initial_state, LOW_STATECHANGE_ULID, 0
def create_all_channels_for_network(
app_channels: AppChannels,
token_addresses: List[TokenAddress],
channel_individual_deposit: TokenAmount,
channel_settle_timeout: BlockTimeout,
) -> None:
greenlets = set()
for token_address in token_addresses:
for app_pair in app_channels:
greenlets.add(
gevent.spawn(
payment_channel_open_and_deposit,
app_pair[0],
app_pair[1],
token_address,
channel_individual_deposit,
channel_settle_timeout,
)
)
gevent.joinall(greenlets, raise_error=True)
channels = [
{
"app0": to_checksum_address(app0.raiden.address),
"app1": to_checksum_address(app1.raiden.address),
"deposit": channel_individual_deposit,
"token_address": to_checksum_address(token_address),
}
for (app0, app1), token_address in product(app_channels, token_addresses)
]
log.info("Test channels", channels=channels)
def log_open_channels(
raiden: "RaidenService",
registry_address: TokenNetworkRegistryAddress,
token_address: TokenAddress,
funds: TokenAmount,
) -> None: # pragma: no unittest
chain_state = views.state_from_raiden(raiden)
open_channels = views.get_channelstate_open(
chain_state=chain_state,
token_network_registry_address=registry_address,
token_address=token_address,
)
if open_channels:
sum_deposits = views.get_our_deposits_for_token_network(
views.state_from_raiden(raiden), registry_address, token_address)
log.debug(
"connect() called on an already joined token network",
node=to_checksum_address(raiden.address),
registry_address=to_checksum_address(registry_address),
token_address=to_checksum_address(token_address),
open_channels=len(open_channels),
sum_deposits=sum_deposits,
funds=funds,
)
def update_iou(
iou: IOU,
privkey: bytes,
added_amount: TokenAmount = ZERO_TOKENS,
expiration_block: Optional[BlockNumber] = None,
) -> IOU:
expected_signature = Signature(
sign_one_to_n_iou(
privatekey=to_hex(privkey),
sender=to_checksum_address(iou.sender),
receiver=to_checksum_address(iou.receiver),
amount=iou.amount,
expiration_block=iou.expiration_block,
one_to_n_address=to_checksum_address(iou.one_to_n_address),
chain_id=iou.chain_id,
))
if iou.signature != expected_signature:
raise ServiceRequestFailed(
"Last IOU as given by the Pathfinding Service is invalid (signature does not match)"
)
iou.amount = TokenAmount(iou.amount + added_amount)
if expiration_block:
iou.expiration_block = expiration_block
iou.sign(privkey)
return iou
def transfer_and_assert(
server_from: APIServer,
server_to: APIServer,
token_address: TokenAddress,
identifier: int,
amount: TokenAmount,
) -> None:
url = _url_for(
server_from,
"token_target_paymentresource",
token_address=to_checksum_address(token_address),
target_address=to_checksum_address(address_from_apiserver(server_to)),
)
json = {"amount": amount, "identifier": identifier}
log.debug("PAYMENT REQUEST", url=url, json=json)
request = grequests.post(url, json=json)
start = time.monotonic()
response = request.send().response
duration = time.monotonic() - start
log.debug("PAYMENT RESPONSE",
url=url,
json=json,
response=response,
duration=duration)
assert getattr(request, "exception", None) is None
assert response is not None
assert response.status_code == HTTPStatus.OK, f"Payment failed, reason: {response.content}"
assert response.headers["Content-Type"] == "application/json"
def post_pfs_feedback(
routing_mode: RoutingMode,
pfs_config: PFSConfig,
token_network_address: TokenNetworkAddress,
route: List[Address],
token: UUID,
successful: bool,
) -> None:
feedback_disabled = routing_mode == RoutingMode.PRIVATE or pfs_config is None
if feedback_disabled:
return
hex_route = [to_checksum_address(address) for address in route]
payload = dict(token=token.hex, path=hex_route, success=successful)
log.info(
"Sending routing feedback to Pathfinding Service",
url=pfs_config.info.url,
token_network_address=to_checksum_address(token_network_address),
payload=payload,
)
try:
requests.post(
f"{pfs_config.info.url}/api/v1/{to_checksum_address(token_network_address)}/feedback",
json=payload,
timeout=DEFAULT_HTTP_REQUEST_TIMEOUT,
)
except requests.RequestException as e:
log.warning(f"Could not send feedback to Pathfinding Service",
exception_=str(e),
payload=payload)
def wait_for_contract(self,
contract_address_hex: AddressHex,
timeout: int = None) -> bool:
""" Wait until a contract is mined
Args:
contract_address_hex: hex encoded address of the contract
timeout: time to wait for the contract to get mined
Returns:
True if the contract got mined, false otherwise
"""
contract_address = decode_hex(contract_address_hex)
start_time = time.time()
result = self._raiden.rpc_client.web3.eth.getCode(
to_checksum_address(contract_address))
current_time = time.time()
while not result:
if timeout and start_time + timeout > current_time:
return False
result = self._raiden.rpc_client.web3.eth.getCode(
to_checksum_address(contract_address))
gevent.sleep(0.5)
current_time = time.time()
return len(result) > 0
def wait_for_token_network(
raiden: "RaidenService",
token_network_registry_address: TokenNetworkRegistryAddress,
token_address: TokenAddress,
retry_timeout: float,
) -> None: # pragma: no unittest
"""Wait until the token network is visible to the RaidenService.
Note:
This does not time out, use gevent.Timeout.
"""
token_network = views.get_token_network_by_token_address(
views.state_from_raiden(raiden), token_network_registry_address,
token_address)
log_details = {
"token_network_registry_address":
to_checksum_address(token_network_registry_address),
"token_address":
to_checksum_address(token_address),
}
while token_network is None:
assert raiden, ALARM_TASK_ERROR_MSG
assert raiden.alarm, ALARM_TASK_ERROR_MSG
log.debug("wait_for_token_network", **log_details)
gevent.sleep(retry_timeout)
token_network = views.get_token_network_by_token_address(
views.state_from_raiden(raiden), token_network_registry_address,
token_address)
def set_url(self, url: str) -> None:
"""Sets the url needed to access the service via HTTP for the caller"""
log_details: Dict[str, Any] = {
"node": to_checksum_address(self.node_address),
"contract": to_checksum_address(self.address),
"url": url,
}
if not url.strip():
msg = "Invalid empty URL"
raise BrokenPreconditionError(msg)
parsed_url = urlparse(url)
if parsed_url.scheme not in ("http", "https"):
msg = "URL provided to service registry must be a valid HTTP(S) endpoint."
raise BrokenPreconditionError(msg)
with log_transaction(log, "set_url", log_details):
gas_limit = self.proxy.estimate_gas("latest", "setURL", url)
if not gas_limit:
msg = f"URL {url} is invalid"
raise RaidenUnrecoverableError(msg)
log_details["gas_limit"] = gas_limit
transaction_hash = self.proxy.transact("setURL", gas_limit, url)
receipt = self.client.poll(transaction_hash)
failed_receipt = check_transaction_threw(receipt=receipt)
if failed_receipt:
msg = f"URL {url} is invalid"
raise RaidenUnrecoverableError(msg)
def happy_path_fixture(chain_state, token_network_state, our_address):
token_network_state, addresses, channel_states = create_square_network_topology(
token_network_state=token_network_state, our_address=our_address)
address1, address2, address3, address4 = addresses
chain_state.nodeaddresses_to_networkstates = {
address1: NetworkState.REACHABLE,
address2: NetworkState.REACHABLE,
address3: NetworkState.REACHABLE,
address4: NetworkState.REACHABLE,
}
json_data = {
"result": [{
"path": [
to_checksum_address(our_address),
to_checksum_address(address2),
to_checksum_address(address3),
to_checksum_address(address4),
],
"estimated_fee":
0,
}],
"feedback_token":
DEFAULT_FEEDBACK_TOKEN.hex,
}
response = mocked_json_response(response_data=json_data)
return addresses, chain_state, channel_states, response, token_network_state
def send_transaction(self,
to: Address,
startgas: int,
value: int = 0,
data: bytes = b"") -> TransactionHash:
""" Locally sign the transaction and send it to the network. """
with self._sent_lock:
if self._sent:
raise RaidenUnrecoverableError(
f"A transaction for this slot has been sent already! "
f"Reusing the nonce is a synchronization problem.")
if to == to_canonical_address(NULL_ADDRESS_HEX):
warnings.warn(
"For contract creation the empty string must be used.")
gas_price = self._client.gas_price()
transaction = {
"data": data,
"gas": startgas,
"nonce": self.nonce,
"value": value,
"gasPrice": gas_price,
}
node_gas_price = self._client.web3.eth.gasPrice
log.debug(
"Calculated gas price for transaction",
node=to_checksum_address(self._client.address),
calculated_gas_price=gas_price,
node_gas_price=node_gas_price,
)
# add the to address if not deploying a contract
if to != b"":
transaction["to"] = to_checksum_address(to)
signed_txn = self._client.web3.eth.account.signTransaction(
transaction, self._client.privkey)
log_details = {
"node": to_checksum_address(self._client.address),
"nonce": transaction["nonce"],
"gasLimit": transaction["gas"],
"gasPrice": transaction["gasPrice"],
}
log.debug("send_raw_transaction called", **log_details)
tx_hash = self._client.web3.eth.sendRawTransaction(
signed_txn.rawTransaction)
log.debug("send_raw_transaction returned",
tx_hash=encode_hex(tx_hash),
**log_details)
self._sent = True
return TransactionHash(tx_hash)
def test_post_pfs_feedback(query_paths_args):
""" Test POST feedback to PFS """
feedback_token = uuid4()
token_network_address = factories.make_token_network_address()
route = [factories.make_address(), factories.make_address()]
with patch.object(session, "post",
return_value=mocked_json_response()) as feedback:
post_pfs_feedback(
routing_mode=RoutingMode.PFS,
pfs_config=query_paths_args["pfs_config"],
token_network_address=token_network_address,
route=route,
token=feedback_token,
successful=True,
)
assert feedback.called
assert feedback.call_args[0][0].find(
to_checksum_address(token_network_address)) > 0
payload = feedback.call_args[1]["json"]
assert payload["token"] == feedback_token.hex
assert payload["success"] is True
assert payload["path"] == [to_checksum_address(addr) for addr in route]
with patch.object(session, "post",
return_value=mocked_json_response()) as feedback:
post_pfs_feedback(
routing_mode=RoutingMode.PFS,
pfs_config=query_paths_args["pfs_config"],
token_network_address=token_network_address,
route=route,
token=feedback_token,
successful=False,
)
assert feedback.called
assert feedback.call_args[0][0].find(
to_checksum_address(token_network_address)) > 0
payload = feedback.call_args[1]["json"]
assert payload["token"] == feedback_token.hex
assert payload["success"] is False
assert payload["path"] == [to_checksum_address(addr) for addr in route]
with patch.object(session, "post",
return_value=mocked_json_response()) as feedback:
post_pfs_feedback(
routing_mode=RoutingMode.PRIVATE,
pfs_config=query_paths_args["pfs_config"],
token_network_address=token_network_address,
route=route,
token=feedback_token,
successful=False,
)
assert not feedback.called
def init(
self,
monitoring_service_address: MonitoringServiceAddress,
one_to_n_address: OneToNAddress,
given_block_identifier: BlockSpecification,
) -> None:
""" Initialize the UserDeposit contract with MS and OneToN addresses """
log_details = {
"monitoring_service_address":
to_checksum_address(monitoring_service_address),
"one_to_n_address":
to_checksum_address(one_to_n_address),
}
check_address_has_code(
client=self.client,
address=Address(monitoring_service_address),
contract_name=CONTRACT_MONITORING_SERVICE,
expected_code=decode_hex(
self.contract_manager.get_runtime_hexcode(
CONTRACT_MONITORING_SERVICE)),
)
check_address_has_code(
client=self.client,
address=Address(one_to_n_address),
contract_name=CONTRACT_ONE_TO_N,
expected_code=decode_hex(
self.contract_manager.get_runtime_hexcode(CONTRACT_ONE_TO_N)),
)
try:
existing_monitoring_service_address = self.monitoring_service_address(
block_identifier=given_block_identifier)
existing_one_to_n_address = self.one_to_n_address(
block_identifier=given_block_identifier)
except ValueError:
pass
except BadFunctionCallOutput:
raise_on_call_returned_empty(given_block_identifier)
else:
if existing_monitoring_service_address != EMPTY_ADDRESS:
msg = (
f"MonitoringService contract address is already set to "
f"{to_checksum_address(existing_monitoring_service_address)}"
)
raise BrokenPreconditionError(msg)
if existing_one_to_n_address != EMPTY_ADDRESS:
msg = (f"OneToN contract address is already set to "
f"{to_checksum_address(existing_one_to_n_address)}")
raise BrokenPreconditionError(msg)
with log_transaction(log, "init", log_details):
self._init(
monitoring_service_address=monitoring_service_address,
one_to_n_address=one_to_n_address,
log_details=log_details,
)
def __init__(
self,
web3: Web3,
privkey: Optional[PrivateKey],
gas_price_strategy: Callable = rpc_gas_price_strategy,
gas_estimate_correction: Callable = lambda gas: gas,
block_num_confirmations: int = 0,
) -> None:
if privkey is None or len(privkey) != 32:
raise ValueError("Invalid private key")
if block_num_confirmations < 0:
raise ValueError("Number of confirmations has to be positive")
monkey_patch_web3(web3, gas_price_strategy)
version = web3.version.node
supported, eth_node, _ = is_supported_client(version)
if not supported:
raise EthNodeInterfaceError(
f"Unsupported Ethereum client {version}")
address = privatekey_to_address(privkey)
address_checksummed = to_checksum_address(address)
if eth_node is EthClient.PARITY:
parity_assert_rpc_interfaces(web3)
available_nonce = parity_discover_next_available_nonce(
web3, address_checksummed)
elif eth_node is EthClient.GETH:
geth_assert_rpc_interfaces(web3)
available_nonce = geth_discover_next_available_nonce(
web3, address_checksummed)
self.eth_node = eth_node
self.privkey = privkey
self.address = address
self.web3 = web3
self.default_block_num_confirmations = block_num_confirmations
# Ask for the chain id only once and store it here
self.chain_id = ChainID(int(self.web3.version.network))
self._available_nonce = available_nonce
self._nonce_lock = Semaphore()
self._gas_estimate_correction = gas_estimate_correction
log.debug(
"JSONRPCClient created",
node=to_checksum_address(self.address),
available_nonce=available_nonce,
client=version,
)
def sign(self, privkey: bytes) -> None:
self.signature = Signature(
sign_one_to_n_iou(
privatekey=encode_hex(privkey),
sender=to_checksum_address(self.sender),
receiver=to_checksum_address(self.receiver),
amount=self.amount,
expiration_block=self.expiration_block,
one_to_n_address=to_checksum_address(self.one_to_n_address),
chain_id=self.chain_id,
))
def flatten_transfer(transfer: LockedTransferType, role: TransferRole) -> Dict[str, Any]:
return {
"payment_identifier": str(transfer.payment_identifier),
"token_address": to_checksum_address(transfer.token),
"token_network_address": to_checksum_address(transfer.balance_proof.token_network_address),
"channel_identifier": str(transfer.balance_proof.channel_identifier),
"initiator": to_checksum_address(transfer.initiator),
"target": to_checksum_address(transfer.target),
"transferred_amount": str(transfer.balance_proof.transferred_amount),
"locked_amount": str(transfer.balance_proof.locked_amount),
"role": role.value,
}
def test_no_iou_when_pfs_price_0(query_paths_args):
""" Test that no IOU is sent when PFS is for free """
query_paths_args["pfs_config"] = PFSConfig(
info=PFSInfo(
url="abc",
price=TokenAmount(0),
chain_id=ChainID(42),
token_network_registry_address=factories.
make_token_network_registry_address(),
user_deposit_address=factories.make_address(),
payment_address=factories.make_address(),
confirmed_block_number=dict(number=BlockNumber(1)),
message="",
operator="",
version="",
matrix_server="http://matrix.example.com",
matrix_room_id="!room-id:matrix.example.com",
),
maximum_fee=TokenAmount(100),
iou_timeout=BlockNumber(100),
max_paths=5,
)
with patch("raiden.network.pathfinding.get_pfs_info") as mocked_pfs_info:
mocked_pfs_info.return_value = PFS_CONFIG.info
with patch.object(pathfinding,
"post_pfs_paths",
return_value=mocked_json_response()) as post_path:
query_paths(
pfs_config=query_paths_args["pfs_config"],
our_address=query_paths_args["our_address"],
privkey=query_paths_args["privkey"],
current_block_number=query_paths_args["current_block_number"],
token_network_address=query_paths_args[
"token_network_address"],
one_to_n_address=query_paths_args["one_to_n_address"],
chain_id=query_paths_args["chain_id"],
route_from=query_paths_args["route_from"],
route_to=query_paths_args["route_to"],
value=query_paths_args["value"],
pfs_wait_for_block=query_paths_args["pfs_wait_for_block"],
)
assert post_path.call_args == call(
payload={
"from": to_checksum_address(query_paths_args["route_from"]),
"to": to_checksum_address(query_paths_args["route_to"]),
"value": query_paths_args["value"],
"max_paths": query_paths_args["pfs_config"].max_paths,
},
token_network_address=query_paths_args["token_network_address"],
url=query_paths_args["pfs_config"].info.url,
)
def as_json(self) -> Dict[str, Any]:
data = dict(
sender=to_checksum_address(self.sender),
receiver=to_checksum_address(self.receiver),
one_to_n_address=to_checksum_address(self.one_to_n_address),
amount=self.amount,
expiration_block=self.expiration_block,
chain_id=self.chain_id,
)
if self.signature is not None:
data["signature"] = to_hex(self.signature)
return data
def restore_to_state_change(
transition_function: Callable,
storage: SerializedSQLiteStorage,
state_change_identifier: StateChangeID,
node_address: Address,
) -> Tuple[int, int, "WriteAheadLog"]:
chain_state: Optional[State]
from_identifier: StateChangeID
snapshot = storage.get_snapshot_before_state_change(
state_change_identifier=state_change_identifier)
if snapshot is not None:
log.debug(
"Restoring from snapshot",
from_state_change_id=snapshot.state_change_identifier,
to_state_change_id=state_change_identifier,
node=to_checksum_address(node_address),
)
from_identifier = snapshot.state_change_identifier
chain_state = snapshot.data
state_change_qty = snapshot.state_change_qty
else:
log.debug(
"No snapshot found, replaying all state changes",
to_state_change_id=state_change_identifier,
node=to_checksum_address(node_address),
)
from_identifier = LOW_STATECHANGE_ULID
chain_state = None
state_change_qty = 0
state_manager = StateManager(transition_function, chain_state)
wal = WriteAheadLog(state_manager, storage)
unapplied_state_changes = storage.get_statechanges_by_range(
Range(from_identifier, state_change_identifier))
if unapplied_state_changes:
log.debug(
"Replaying state changes",
replayed_state_changes=[
redact_secret(DictSerializer.serialize(state_change))
for state_change in unapplied_state_changes
],
node=to_checksum_address(node_address),
)
for state_change in unapplied_state_changes:
wal.state_manager.dispatch(state_change)
return state_change_qty, len(unapplied_state_changes), wal
def _maybe_run_callbacks(self, latest_block: BlockData) -> None:
"""Run the callbacks if there is at least one new block.
The callbacks are executed only if there is a new block, otherwise the
filters may try to poll for an inexisting block number and the Ethereum
client can return an JSON-RPC error.
"""
latest_block_number = latest_block["number"]
# First run, set the block and run the callbacks
if self.known_block_number is None:
self.known_block_number = latest_block_number
missed_blocks = 1
else:
missed_blocks = latest_block_number - self.known_block_number
if missed_blocks < 0:
log.critical(
"Block number decreased",
chain_id=self.rpc_client.chain_id,
known_block_number=self.known_block_number,
old_block_number=latest_block["number"],
old_gas_limit=latest_block["gasLimit"],
old_block_hash=to_hex(latest_block["hash"]),
node=to_checksum_address(self.rpc_client.address),
)
elif missed_blocks > 0:
log_details = dict(
known_block_number=self.known_block_number,
latest_block_number=latest_block_number,
latest_block_hash=to_hex(latest_block["hash"]),
latest_block_gas_limit=latest_block["gasLimit"],
node=to_checksum_address(self.rpc_client.address),
)
if missed_blocks > 1:
log_details["num_missed_blocks"] = missed_blocks - 1
log.debug("Received new block", **log_details)
remove = list()
for callback in self.callbacks:
result = callback(latest_block)
if result is REMOVE_CALLBACK:
remove.append(callback)
for callback in remove:
self.callbacks.remove(callback)
self.known_block_number = latest_block_number
def test_call_inexisting_address(deploy_client):
""" A JSON RPC call to an inexisting address returns the empty string. """
inexisting_address = b"\x01\x02\x03\x04\x05" * 4
assert len(
deploy_client.web3.eth.getCode(
to_checksum_address(inexisting_address))) == 0
transaction = {
"from": to_checksum_address(deploy_client.address),
"to": to_checksum_address(inexisting_address),
"data": b"",
"value": 0,
}
assert deploy_client.web3.eth.call(transaction) == b""
def check_address_has_code(client: "JSONRPCClient",
address: Address,
contract_name: str = "",
expected_code: bytes = None) -> None:
""" Checks that the given address contains code. """
result = client.web3.eth.getCode(to_checksum_address(address), "latest")
if not result:
raise AddressWithoutCode("[{}]Address {} does not contain code".format(
contract_name, to_checksum_address(address)))
if expected_code is not None and result != expected_code:
raise ContractCodeMismatch(
f"[{contract_name}]Address {to_checksum_address(address)} has wrong code."
)
def handle_paymentsentsuccess(
raiden: "RaidenService",
payment_sent_success_event: EventPaymentSentSuccess
) -> None: # pragma: no unittest
feedback_token = raiden.route_to_feedback_token.get(
tuple(payment_sent_success_event.route))
pfs_config = raiden.config.pfs_config
if feedback_token and pfs_config:
log.debug(
"Received payment success event",
route=[
to_checksum_address(node)
for node in payment_sent_success_event.route
],
feedback_token=feedback_token,
)
post_pfs_feedback(
routing_mode=raiden.routing_mode,
pfs_config=pfs_config,
token_network_address=payment_sent_success_event.
token_network_address,
route=payment_sent_success_event.route,
token=feedback_token,
successful=True,
)
def restore_state(
transition_function: Callable,
storage: SerializedSQLiteStorage,
state_change_identifier: StateChangeID,
node_address: Address,
) -> Optional[State]:
snapshot = storage.get_snapshot_before_state_change(
state_change_identifier=state_change_identifier)
if snapshot is None:
return None
log.debug(
"Snapshot found",
from_state_change_id=snapshot.state_change_identifier,
to_state_change_id=state_change_identifier,
node=to_checksum_address(node_address),
)
state, _ = replay_state_changes(
node_address=node_address,
state=snapshot.data,
state_change_range=Range(snapshot.state_change_identifier,
state_change_identifier),
storage=storage,
transition_function=transition_function,
)
return state
def wait_for_network_state(
raiden: "RaidenService",
node_address: Address,
network_state: NetworkState,
retry_timeout: float,
) -> None: # pragma: no unittest
"""Wait until `node_address` becomes healthy.
Note:
This does not time out, use gevent.Timeout.
"""
network_statuses = views.get_networkstatuses(
views.state_from_raiden(raiden))
current = network_statuses.get(node_address)
log_details = {
"node_address": to_checksum_address(node_address),
"target_network_state": network_state,
}
while current != network_state:
assert raiden, TRANSPORT_ERROR_MSG
assert raiden.transport, TRANSPORT_ERROR_MSG
log.debug("wait_for_network_state",
current_network_state=current,
**log_details)
gevent.sleep(retry_timeout)
network_statuses = views.get_networkstatuses(
views.state_from_raiden(raiden))
current = network_statuses.get(node_address)
def _find_new_partners(self) -> List[Address]:
""" Search the token network for potential channel partners. """
open_channels = views.get_channelstate_open(
chain_state=views.state_from_raiden(self.raiden),
token_network_registry_address=self.registry_address,
token_address=self.token_address,
)
known = set(channel_state.partner_state.address
for channel_state in open_channels)
known.add(self.BOOTSTRAP_ADDR)
known.add(self.raiden.address)
participants_addresses = views.get_participants_addresses(
views.state_from_raiden(self.raiden), self.registry_address,
self.token_address)
available_addresses = list(participants_addresses - known)
shuffle(available_addresses)
new_partners = available_addresses
log.debug(
"Found partners",
node=to_checksum_address(self.raiden.address),
number_of_partners=len(available_addresses),
)
return new_partners
def main(keystore_file, password, rpc_url, eth_amount, targets_file) -> None:
web3 = Web3(HTTPProvider(rpc_url))
with open(keystore_file, "r") as keystore:
account = Account(json.load(keystore), password, keystore_file)
assert account.privkey, "Could not decode keystore file: wrong password"
assert account.address, "Could not decode keystore file: no 'address' field found"
print("Using account:", to_checksum_address(account.address))
client = JSONRPCClient(
web3,
account.privkey,
block_num_confirmations=DEFAULT_NUMBER_OF_BLOCK_CONFIRMATIONS)
targets = [t.strip() for t in targets_file]
balance = client.balance(client.address)
balance_needed = len(targets) * eth_amount
if balance_needed * WEI_TO_ETH > balance:
print(
"Not enough balance to fund {} accounts with {} eth each. Need {}, have {}"
.format(len(targets), eth_amount, balance_needed,
balance / WEI_TO_ETH))
print("Sending {} eth to:".format(eth_amount))
for target in targets:
print(" - {}".format(target))
gas_price = web3.eth.gasPrice # pylint: disable=no-member
client.transact(
EthTransfer(to_address=target,
value=eth_amount * WEI_TO_ETH,
gas_price=gas_price))
def handle_routefailed(
raiden: "RaidenService", route_failed_event: EventRouteFailed
) -> None: # pragma: no unittest
feedback_token = raiden.route_to_feedback_token.get(
tuple(route_failed_event.route))
pfs_config = raiden.config.pfs_config
if feedback_token and pfs_config:
log.debug(
"Received event for failed route",
route=[
to_checksum_address(node)
for node in route_failed_event.route
],
secrethash=encode_hex(route_failed_event.secrethash),
feedback_token=feedback_token,
)
post_pfs_feedback(
routing_mode=raiden.routing_mode,
pfs_config=pfs_config,
token_network_address=route_failed_event.token_network_address,
route=route_failed_event.route,
token=feedback_token,
successful=False,
)
def test_resending_mined_transaction_raises(deploy_client: JSONRPCClient) -> None:
""" If a mined transaction is re-sent the exception `EthereumNonceTooLow` is raised. """
# Use a _fixed_ gas price strategy so that both transactions are identical.
deploy_client.web3.eth.setGasPriceStrategy(make_fixed_gas_price_strategy(GasPrice(2000000000)))
contract_proxy, _ = deploy_rpc_test_contract(deploy_client, "RpcTest")
address = contract_proxy.contract_address
assert len(deploy_client.web3.eth.getCode(to_checksum_address(address))) > 0
# Create a new instance of the JSONRPCClient, this will store the current available nonce
client_invalid_nonce = JSONRPCClient(deploy_client.web3, deploy_client.privkey)
check_block = deploy_client.get_checking_block()
gas_estimate = contract_proxy.estimate_gas(check_block, "ret")
assert gas_estimate, "Gas estimation should not fail here"
startgas = safe_gas_limit(gas_estimate)
txhash = contract_proxy.transact("ret", startgas)
deploy_client.poll(txhash)
# At this point `client_invalid_nonce` has a nonce that is `1` too low,
# since a transaction was sent using `deploy_client` above and these two
# instances share the same underlying private key.
#
# Note that the same function is called in this test.
with pytest.raises(EthereumNonceTooLow):
client_invalid_nonce.new_contract_proxy(
abi=contract_proxy.contract.abi, contract_address=contract_proxy.contract_address
).transact("ret", startgas)
def get_filter_args_for_specific_event_from_channel(
token_network_address: TokenNetworkAddress,
channel_identifier: ChannelID,
event_name: str,
contract_manager: ContractManager,
from_block: BlockIdentifier = GENESIS_BLOCK_NUMBER,
to_block: BlockIdentifier = BLOCK_ID_LATEST,
) -> FilterParams:
""" Return the filter params for a specific event of a given channel. """
event_abi = contract_manager.get_event_abi(CONTRACT_TOKEN_NETWORK,
event_name)
# Here the topics for a specific event are created
# The first entry of the topics list is the event name, then the first parameter is encoded,
# in the case of a token network, the first parameter is always the channel identifier
_, event_filter_params = construct_event_filter_params(
event_abi=event_abi,
abi_codec=ABI_CODEC,
contract_address=to_checksum_address(token_network_address),
argument_filters={"channel_identifier": channel_identifier},
fromBlock=from_block,
toBlock=to_block,
)
return event_filter_params