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Cleanup PackageTemplatea bit #3297

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merged 8 commits into from
Oct 18, 2024
+190 −128
Merged

Cleanup PackageTemplatea bit #3297

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2f549ee
Rename claim cleaning match bool for accuracy
TheBlueMatt Sep 5, 2024
a19edbc
Rename `PackageTemplate::timelock` `counteraprty_spendable_height`
TheBlueMatt Sep 6, 2024
8c4794d
Drop unused `PackageTemplate::height_original`
TheBlueMatt Sep 5, 2024
303a0c9
Stop passing current height to `PackageTemplate::build_package`
TheBlueMatt Sep 6, 2024
be91587
Clean up `PackageTemplate::get_height_timer` to consider type
TheBlueMatt Sep 18, 2024
d557334
Rename `soonest_conf_deadline` to `counterparty_spendable_height`
TheBlueMatt Sep 18, 2024
6ae33dc
Set correct `counterparty_spendable_height` for outb local HTLCs
TheBlueMatt Sep 18, 2024
20db790
Add a test for the fee-bump rate of timeout HTLC claims on cp txn
TheBlueMatt Oct 18, 2024
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29 changes: 19 additions & 10 deletions lightning/src/chain/channelmonitor.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -3018,7 +3018,7 @@ impl<Signer: EcdsaChannelSigner> ChannelMonitorImpl<Signer> {
let commitment_package = PackageTemplate::build_package(
self.funding_info.0.txid.clone(), self.funding_info.0.index as u32,
PackageSolvingData::HolderFundingOutput(funding_outp),
self.best_block.height, self.best_block.height
self.best_block.height,
);
let mut claimable_outpoints = vec![commitment_package];
let event = MonitorEvent::HolderForceClosedWithInfo {
Expand All @@ -3041,7 +3041,7 @@ impl<Signer: EcdsaChannelSigner> ChannelMonitorImpl<Signer> {
// assuming it gets confirmed in the next block. Sadly, we have code which considers
// "not yet confirmed" things as discardable, so we cannot do that here.
let (mut new_outpoints, _) = self.get_broadcasted_holder_claims(
&self.current_holder_commitment_tx, self.best_block.height
&self.current_holder_commitment_tx, self.best_block.height,
);
let unsigned_commitment_tx = self.onchain_tx_handler.get_unsigned_holder_commitment_tx();
let new_outputs = self.get_broadcasted_holder_watch_outputs(
Expand Down Expand Up @@ -3459,7 +3459,11 @@ impl<Signer: EcdsaChannelSigner> ChannelMonitorImpl<Signer> {
for (idx, outp) in tx.output.iter().enumerate() {
if outp.script_pubkey == revokeable_p2wsh {
let revk_outp = RevokedOutput::build(per_commitment_point, self.counterparty_commitment_params.counterparty_delayed_payment_base_key, self.counterparty_commitment_params.counterparty_htlc_base_key, per_commitment_key, outp.value, self.counterparty_commitment_params.on_counterparty_tx_csv, self.onchain_tx_handler.channel_type_features().supports_anchors_zero_fee_htlc_tx());
let justice_package = PackageTemplate::build_package(commitment_txid, idx as u32, PackageSolvingData::RevokedOutput(revk_outp), height + self.counterparty_commitment_params.on_counterparty_tx_csv as u32, height);
let justice_package = PackageTemplate::build_package(
commitment_txid, idx as u32,
PackageSolvingData::RevokedOutput(revk_outp),
height + self.counterparty_commitment_params.on_counterparty_tx_csv as u32,
);
claimable_outpoints.push(justice_package);
to_counterparty_output_info =
Some((idx.try_into().expect("Txn can't have more than 2^32 outputs"), outp.value));
Expand All @@ -3476,7 +3480,12 @@ impl<Signer: EcdsaChannelSigner> ChannelMonitorImpl<Signer> {
return (claimable_outpoints, to_counterparty_output_info);
}
let revk_htlc_outp = RevokedHTLCOutput::build(per_commitment_point, self.counterparty_commitment_params.counterparty_delayed_payment_base_key, self.counterparty_commitment_params.counterparty_htlc_base_key, per_commitment_key, htlc.amount_msat / 1000, htlc.clone(), &self.onchain_tx_handler.channel_transaction_parameters.channel_type_features);
let justice_package = PackageTemplate::build_package(commitment_txid, transaction_output_index, PackageSolvingData::RevokedHTLCOutput(revk_htlc_outp), htlc.cltv_expiry, height);
let justice_package = PackageTemplate::build_package(
commitment_txid,
transaction_output_index,
PackageSolvingData::RevokedHTLCOutput(revk_htlc_outp),
htlc.cltv_expiry,
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Should the counterparty_spendable_height be adjusted here as well based on whether the htlc is offered or not?

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Yea, sorry, fought with this for a while and think we should do it in a separate PR, it causes a bunch of test changes.

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Would be good to track this feedback somewhere

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#3372

);
claimable_outpoints.push(justice_package);
}
}
Expand Down Expand Up @@ -3598,7 +3607,7 @@ impl<Signer: EcdsaChannelSigner> ChannelMonitorImpl<Signer> {
self.counterparty_commitment_params.counterparty_htlc_base_key,
htlc.clone(), self.onchain_tx_handler.channel_type_features().clone()))
};
let counterparty_package = PackageTemplate::build_package(commitment_txid, transaction_output_index, counterparty_htlc_outp, htlc.cltv_expiry, 0);
let counterparty_package = PackageTemplate::build_package(commitment_txid, transaction_output_index, counterparty_htlc_outp, htlc.cltv_expiry);
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Should the counterparty_spendable_height be adjusted here as well based on whether the htlc is offered or not?

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Ideally yea, but passing the current height through to here is very annoying, and really it doesn't matter - if its a timeout claim our counterparty can claim it now, but we can't so having a counterparty_claimable_height of when we can both claim it is fine.

claimable_outpoints.push(counterparty_package);
}
}
Expand Down Expand Up @@ -3642,7 +3651,7 @@ impl<Signer: EcdsaChannelSigner> ChannelMonitorImpl<Signer> {
);
let justice_package = PackageTemplate::build_package(
htlc_txid, idx as u32, PackageSolvingData::RevokedOutput(revk_outp),
height + self.counterparty_commitment_params.on_counterparty_tx_csv as u32, height
height + self.counterparty_commitment_params.on_counterparty_tx_csv as u32,
);
claimable_outpoints.push(justice_package);
if outputs_to_watch.is_none() {
Expand All @@ -3665,11 +3674,11 @@ impl<Signer: EcdsaChannelSigner> ChannelMonitorImpl<Signer> {

for &(ref htlc, _, _) in holder_tx.htlc_outputs.iter() {
if let Some(transaction_output_index) = htlc.transaction_output_index {
let htlc_output = if htlc.offered {
let (htlc_output, counterparty_spendable_height) = if htlc.offered {
let htlc_output = HolderHTLCOutput::build_offered(
htlc.amount_msat, htlc.cltv_expiry, self.onchain_tx_handler.channel_type_features().clone()
);
htlc_output
(htlc_output, conf_height)
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Missing test coverage for this change

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Right, several of the "fix the value we pass" commits don't have test coverage because we don't rely on the value being the new correct one (and can't, old monitors may still be around which don't have the corrected value).

} else {
let payment_preimage = if let Some(preimage) = self.payment_preimages.get(&htlc.payment_hash) {
preimage.clone()
Expand All @@ -3680,12 +3689,12 @@ impl<Signer: EcdsaChannelSigner> ChannelMonitorImpl<Signer> {
let htlc_output = HolderHTLCOutput::build_accepted(
payment_preimage, htlc.amount_msat, self.onchain_tx_handler.channel_type_features().clone()
);
htlc_output
(htlc_output, htlc.cltv_expiry)
};
let htlc_package = PackageTemplate::build_package(
holder_tx.txid, transaction_output_index,
PackageSolvingData::HolderHTLCOutput(htlc_output),
htlc.cltv_expiry, conf_height
counterparty_spendable_height,
);
claim_requests.push(htlc_package);
}
Expand Down
18 changes: 9 additions & 9 deletions lightning/src/chain/onchaintx.rs
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Expand Up @@ -765,9 +765,8 @@ impl<ChannelSigner: EcdsaChannelSigner> OnchainTxHandler<ChannelSigner> {
continue;
}

log_trace!(logger, "Test if outpoint can be aggregated with expiration {} against {}", req.timelock(), cur_height + CLTV_SHARED_CLAIM_BUFFER);
if req.timelock() <= cur_height + CLTV_SHARED_CLAIM_BUFFER || !req.aggregable() {
// Don't aggregate if outpoint package timelock is soon or marked as non-aggregable
log_trace!(logger, "Test if outpoint which our counterparty can spend at {} can be aggregated based on aggregation limit {}", req.counterparty_spendable_height(), cur_height + CLTV_SHARED_CLAIM_BUFFER);
if req.counterparty_spendable_height() <= cur_height + CLTV_SHARED_CLAIM_BUFFER || !req.aggregable() {
preprocessed_requests.push(req);
} else if aggregated_request.is_none() {
aggregated_request = Some(req);
Expand Down Expand Up @@ -885,15 +884,16 @@ impl<ChannelSigner: EcdsaChannelSigner> OnchainTxHandler<ChannelSigner> {
if let Some((claim_id, _)) = self.claimable_outpoints.get(&inp.previous_output) {
// If outpoint has claim request pending on it...
if let Some(request) = self.pending_claim_requests.get_mut(claim_id) {
//... we need to verify equality between transaction outpoints and claim request
// outpoints to know if transaction is the original claim or a bumped one issued
// by us.
let mut are_sets_equal = true;
//... we need to check if the pending claim was for a subset of the outputs
// spent by the confirmed transaction. If so, we can drop the pending claim
// after ANTI_REORG_DELAY blocks, otherwise we need to split it and retry
// claiming the remaining outputs.
let mut is_claim_subset_of_tx = true;
let mut tx_inputs = tx.input.iter().map(|input| &input.previous_output).collect::<Vec<_>>();
tx_inputs.sort_unstable();
for request_input in request.outpoints() {
if tx_inputs.binary_search(&request_input).is_err() {
are_sets_equal = false;
is_claim_subset_of_tx = false;
break;
}
}
Expand All @@ -915,7 +915,7 @@ impl<ChannelSigner: EcdsaChannelSigner> OnchainTxHandler<ChannelSigner> {
// If this is our transaction (or our counterparty spent all the outputs
// before we could anyway with same inputs order than us), wait for
// ANTI_REORG_DELAY and clean the RBF tracking map.
if are_sets_equal {
if is_claim_subset_of_tx {
clean_claim_request_after_safety_delay!();
} else { // If false, generate new claim request with update outpoint set
let mut at_least_one_drop = false;
Expand Down
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