use crate::ln::features::ChannelTypeFeatures;
use crate::ln::PaymentPreimage;
use crate::prelude::*;
-use crate::sign::{ChannelSigner, EcdsaChannelSigner, SignerProvider, WriteableEcdsaChannelSigner};
+use crate::sign::{EcdsaChannelSigner, SignerProvider, WriteableEcdsaChannelSigner};
use crate::sync::Mutex;
use crate::util::logger::Logger;
pub transaction_parameters: ChannelTransactionParameters,
}
+impl_writeable_tlv_based!(ChannelDerivationParameters, {
+ (0, value_satoshis, required),
+ (2, keys_id, required),
+ (4, transaction_parameters, required),
+});
+
/// A descriptor used to sign for a commitment transaction's anchor output.
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct AnchorDescriptor {
pub counterparty_sig: Signature
}
+impl_writeable_tlv_based!(HTLCDescriptor, {
+ (0, channel_derivation_parameters, required),
+ (2, commitment_txid, required),
+ (4, per_commitment_number, required),
+ (6, per_commitment_point, required),
+ (8, htlc, required),
+ (10, preimage, option),
+ (12, counterparty_sig, required),
+});
+
impl HTLCDescriptor {
/// Returns the outpoint of the HTLC output in the commitment transaction. This is the outpoint
/// being spent by the HTLC input in the HTLC transaction.
/// An input that must be included in a transaction when performing coin selection through
/// [`CoinSelectionSource::select_confirmed_utxos`]. It is guaranteed to be a SegWit input, so it
/// must have an empty [`TxIn::script_sig`] when spent.
+#[derive(Clone, Debug, Hash, PartialOrd, Ord, PartialEq, Eq)]
pub struct Input {
/// The unique identifier of the input.
pub outpoint: OutPoint,
/// An unspent transaction output that is available to spend resulting from a successful
/// [`CoinSelection`] attempt.
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Hash, PartialOrd, Ord, PartialEq, Eq)]
pub struct Utxo {
/// The unique identifier of the output.
pub outpoint: OutPoint,
/// The result of a successful coin selection attempt for a transaction requiring additional UTXOs
/// to cover its fees.
+#[derive(Clone, Debug)]
pub struct CoinSelection {
/// The set of UTXOs (with at least 1 confirmation) to spend and use within a transaction
/// requiring additional fees.
/// which UTXOs to double spend is left to the implementation, but it must strive to keep the
/// set of other claims being double spent to a minimum.
fn select_confirmed_utxos(
- &self, claim_id: ClaimId, must_spend: &[Input], must_pay_to: &[TxOut],
+ &self, claim_id: ClaimId, must_spend: Vec<Input>, must_pay_to: &[TxOut],
target_feerate_sat_per_1000_weight: u32,
) -> Result<CoinSelection, ()>;
/// Signs and provides the full witness for all inputs within the transaction known to the
L::Target: Logger
{
fn select_confirmed_utxos(
- &self, claim_id: ClaimId, must_spend: &[Input], must_pay_to: &[TxOut],
+ &self, claim_id: ClaimId, must_spend: Vec<Input>, must_pay_to: &[TxOut],
target_feerate_sat_per_1000_weight: u32,
) -> Result<CoinSelection, ()> {
let utxos = self.source.list_confirmed_utxos()?;
satisfaction_weight: commitment_tx.weight() as u64 + ANCHOR_INPUT_WITNESS_WEIGHT + EMPTY_SCRIPT_SIG_WEIGHT,
}];
let coin_selection = self.utxo_source.select_confirmed_utxos(
- claim_id, &must_spend, &[], anchor_target_feerate_sat_per_1000_weight,
+ claim_id, must_spend, &[], anchor_target_feerate_sat_per_1000_weight,
)?;
let mut anchor_tx = Transaction {
log_debug!(self.logger, "Peforming coin selection for HTLC transaction targeting {} sat/kW",
target_feerate_sat_per_1000_weight);
+ #[cfg(debug_assertions)]
+ let must_spend_satisfaction_weight =
+ must_spend.iter().map(|input| input.satisfaction_weight).sum::<u64>();
let coin_selection = self.utxo_source.select_confirmed_utxos(
- claim_id, &must_spend, &htlc_tx.output, target_feerate_sat_per_1000_weight,
+ claim_id, must_spend, &htlc_tx.output, target_feerate_sat_per_1000_weight,
)?;
#[cfg(debug_assertions)]
let total_satisfaction_weight =
coin_selection.confirmed_utxos.iter().map(|utxo| utxo.satisfaction_weight).sum::<u64>() +
- must_spend.iter().map(|input| input.satisfaction_weight).sum::<u64>();
+ must_spend_satisfaction_weight;
self.process_coin_selection(&mut htlc_tx, coin_selection);
#[cfg(debug_assertions)]