def get_all_netting_channel_events(
proxy_manager: ProxyManager,
token_network_address: TokenNetworkAddress,
netting_channel_identifier: ChannelID,
contract_manager: ContractManager,
from_block: BlockIdentifier = GENESIS_BLOCK_NUMBER,
to_block: BlockIdentifier = BLOCK_ID_LATEST,
) -> List[Dict]: # pragma: no unittest
""" Helper to get all events of a NettingChannelContract. """
filter_args = get_filter_args_for_all_events_from_channel(
token_network_address=token_network_address,
channel_identifier=netting_channel_identifier,
contract_manager=contract_manager,
from_block=from_block,
to_block=to_block,
)
return get_contract_events(
proxy_manager,
contract_manager.get_contract_abi(CONTRACT_TOKEN_NETWORK),
Address(token_network_address),
filter_args["topics"], # type: ignore
from_block,
to_block,
)
def test_get_filter_args(contract_manager):
channel_identifier = factories.UNIT_CHANNEL_ID
token_network_address = factories.UNIT_TOKEN_NETWORK_ADDRESS
event_filter_params = get_filter_args_for_all_events_from_channel(
token_network_address=token_network_address,
channel_identifier=channel_identifier,
contract_manager=contract_manager,
)
assert event_filter_params["topics"][0] is None
assert to_int(
hexstr=event_filter_params["topics"][1]) == channel_identifier
assert event_filter_params["address"] == to_checksum_address(
token_network_address)
assert event_filter_params["fromBlock"] == 0
assert event_filter_params["toBlock"] == BLOCK_ID_LATEST
with pytest.raises(ValueError):
# filter argument generation checks if event type is known
get_filter_args_for_specific_event_from_channel(
token_network_address=token_network_address,
channel_identifier=channel_identifier,
event_name="NonexistingEvent",
contract_manager=contract_manager,
)
event_filter_params = get_filter_args_for_specific_event_from_channel(
token_network_address=token_network_address,
channel_identifier=channel_identifier,
event_name="ChannelOpened",
contract_manager=contract_manager,
from_block=BlockNumber(100),
to_block=BlockNumber(200),
)
assert event_filter_params["topics"][0] is not None
assert to_int(
hexstr=event_filter_params["topics"][1]) == channel_identifier
assert event_filter_params["address"] == to_checksum_address(
token_network_address)
assert event_filter_params["fromBlock"] == 100
assert event_filter_params["toBlock"] == 200
