pub enum Duty {
NewReadyToReimburse {
round_idx: RoundIndex,
operator_xonly_pk: XOnlyPublicKey,
used_kickoffs: HashSet<usize>,
},
CheckIfKickoff {
txid: Txid,
block_height: u32,
witness: Witness,
challenged_before: bool,
},
WatchtowerChallenge {
kickoff_data: KickoffData,
deposit_data: DepositData,
},
SendOperatorAsserts {
kickoff_data: KickoffData,
deposit_data: DepositData,
watchtower_challenges: HashMap<usize, Transaction>,
payout_blockhash: Witness,
latest_blockhash: Witness,
},
VerifierDisprove {
kickoff_data: KickoffData,
deposit_data: DepositData,
operator_asserts: HashMap<usize, Witness>,
operator_acks: HashMap<usize, Witness>,
payout_blockhash: Witness,
latest_blockhash: Witness,
},
SendLatestBlockhash {
kickoff_data: KickoffData,
deposit_data: DepositData,
latest_blockhash: BlockHash,
},
}
Expand description
Duties are notifications that are sent to the owner (verifier or operator) of the state machine to notify them on changes to the current contract state that require action. Note that for all kickoff state duties, they are only sent if withdrawal process is still going on, meaning the burn connector and kickoff finalizer is still on-chain/unspent.
Variants§
NewReadyToReimburse
– Round state duties – This duty is sent after a new ready to reimburse tx is sent by the corresponding operator. used_kickoffs is a set of kickoff indexes that have been used in the previous round. If there are unspent kickoffs, the owner can send a unspent kickoff connector tx.
CheckIfKickoff
This duty is sent after a kickoff utxo is spent by the operator. It includes the txid in which the utxo was spent, so that the owner can verify if this is an actual kickoff sent by operator. Witness is also sent as if tx is an actual kickoff, the witness includes payout blockhash.
WatchtowerChallenge
– Kickoff state duties – This duty is only sent if a kickoff was challenged. This duty is sent after some time (paramset.time_to_send_watchtower_challenge number of blocks) passes after a kickoff was sent to chain. It denotes to the owner that it is time to send a watchtower challenge to the corresponding kickoff.
SendOperatorAsserts
This duty is only sent if a kickoff was challenged. This duty is sent only after latest blockhash is committed. Latest blockhash is committed after all watchtower challenges are sent or timed out so that it is certain no new watchtower challenges can be sent. The duty denotes that it is time to start sending operator asserts to the corresponding kickoff. It includes the all watchtower challenges and the payout blockhash so that they can be used in the proof.
Fields
kickoff_data: KickoffData
deposit_data: DepositData
payout_blockhash: Witness
latest_blockhash: Witness
VerifierDisprove
This duty is only sent if a kickoff was challenged. This duty is sent after all asserts and latest blockhash commit are finalized on chain, and all watchtower challenge utxos are spent. It denotes to the owner that it is time to send a disprove to the corresponding kickoff. It includes the operator asserts, operator acks and the payout blockhash so that they can be used in the disprove tx if the proof is invalid.
Fields
kickoff_data: KickoffData
deposit_data: DepositData
payout_blockhash: Witness
latest_blockhash: Witness
SendLatestBlockhash
This duty is only sent if a kickoff was challenged. This duty is sent after every watchtower challenge is either sent or timed out. It denotes to the owner that it is time to send a latest blockhash to the corresponding kickoff to be used in the proof.
Trait Implementations§
Auto Trait Implementations§
impl Freeze for Duty
impl RefUnwindSafe for Duty
impl Send for Duty
impl Sync for Duty
impl Unpin for Duty
impl UnwindSafe for Duty
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