def events_for_onchain_secretreveal(
target_state: TargetTransferState,
channel_state: NettingChannelState,
block_number: BlockNumber,
block_hash: BlockHash,
) -> List[Event]:
""" Emits the event for revealing the secret on-chain if the transfer
can not be settled off-chain.
"""
transfer = target_state.transfer
expiration = transfer.lock.expiration
safe_to_wait = is_safe_to_wait(expiration, channel_state.reveal_timeout, block_number)
secret_known_offchain = channel.is_secret_known_offchain(
channel_state.partner_state, transfer.lock.secrethash
)
has_onchain_reveal_started = target_state.state == TargetTransferState.ONCHAIN_SECRET_REVEAL
if not safe_to_wait and secret_known_offchain and not has_onchain_reveal_started:
target_state.state = TargetTransferState.ONCHAIN_SECRET_REVEAL
secret = channel.get_secret(channel_state.partner_state, transfer.lock.secrethash)
assert secret, "secret should be known at this point"
return secret_registry.events_for_onchain_secretreveal(
channel_state=channel_state,
secret=secret,
expiration=expiration,
block_hash=block_hash,
)
return list()
def events_for_onchain_secretreveal(
target_state: TargetTransferState,
channel_state: NettingChannelState,
block_number: typing.BlockNumber,
):
""" Emits the event for revealing the secret on-chain if the transfer
can not be settled off-chain.
"""
transfer = target_state.transfer
expiration = transfer.lock.expiration
safe_to_wait, _ = is_safe_to_wait(
expiration,
channel_state.reveal_timeout,
block_number,
)
secret_known_offchain = channel.is_secret_known_offchain(
channel_state.partner_state,
transfer.lock.secrethash,
)
if not safe_to_wait and secret_known_offchain:
secret = channel.get_secret(
channel_state.partner_state,
transfer.lock.secrethash,
)
return secret_registry.events_for_onchain_secretreveal(
channel_state,
secret,
expiration,
)
return list()
def events_for_onchain_secretreveal(
target_state: TargetTransferState,
channel_state: NettingChannelState,
block_number: BlockNumber,
):
""" Emits the event for revealing the secret on-chain if the transfer
can not be settled off-chain.
"""
transfer = target_state.transfer
expiration = transfer.lock.expiration
safe_to_wait, _ = is_safe_to_wait(
expiration,
channel_state.reveal_timeout,
block_number,
)
secret_known_offchain = channel.is_secret_known_offchain(
channel_state.partner_state,
transfer.lock.secrethash,
)
has_onchain_reveal_started = (
target_state.state == TargetTransferState.ONCHAIN_SECRET_REVEAL
)
if not safe_to_wait and secret_known_offchain and not has_onchain_reveal_started:
target_state.state = TargetTransferState.ONCHAIN_SECRET_REVEAL
secret = channel.get_secret(
channel_state.partner_state,
transfer.lock.secrethash,
)
return secret_registry.events_for_onchain_secretreveal(
channel_state,
secret,
expiration,
)
return list()
