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Move feerate helpers to chain module

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We plan to use these outside of the `bump_transaction` module in the
next commit, and they really should belong in the same module as
`FeeEstimator`.
This commit is contained in:
Wilmer Paulino 2023-07-11 15:14:01 -07:00
parent 07606c1841
commit 19de4353d5
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GPG key ID: 634FE5FC544DCA31
2 changed files with 10 additions and 10 deletions
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9
lightning/src/chain/chaininterface.rs
View file

@ -14,9 +14,18 @@
//! disconnections, transaction broadcasting, and feerate information requests.
use core::{cmp, ops::Deref};
use core::convert::TryInto;
use bitcoin::blockdata::transaction::Transaction;
// TODO: Define typed abstraction over feerates to handle their conversions.
pub(crate) fn compute_feerate_sat_per_1000_weight(fee_sat: u64, weight: u64) -> u32 {
(fee_sat * 1000 / weight).try_into().unwrap_or(u32::max_value())
}
pub(crate) const fn fee_for_weight(feerate_sat_per_1000_weight: u32, weight: u64) -> u64 {
((feerate_sat_per_1000_weight as u64 * weight) + 1000 - 1) / 1000
}
/// An interface to send a transaction to the Bitcoin network.
pub trait BroadcasterInterface {
/// Sends a list of transactions out to (hopefully) be mined.

11
lightning/src/events/bump_transaction.rs
View file

@ -12,10 +12,9 @@
//! [`Event`]: crate::events::Event
use alloc::collections::BTreeMap;
use core::convert::TryInto;
use core::ops::Deref;
use crate::chain::chaininterface::BroadcasterInterface;
use crate::chain::chaininterface::{BroadcasterInterface, compute_feerate_sat_per_1000_weight, fee_for_weight};
use crate::chain::ClaimId;
use crate::io_extras::sink;
use crate::ln::channel::ANCHOR_OUTPUT_VALUE_SATOSHI;
@ -44,14 +43,6 @@ const BASE_INPUT_SIZE: u64 = 32 /* txid */ + 4 /* vout */ + 4 /* sequence */;
const BASE_INPUT_WEIGHT: u64 = BASE_INPUT_SIZE * WITNESS_SCALE_FACTOR as u64;
// TODO: Define typed abstraction over feerates to handle their conversions.
fn compute_feerate_sat_per_1000_weight(fee_sat: u64, weight: u64) -> u32 {
(fee_sat * 1000 / weight).try_into().unwrap_or(u32::max_value())
}
const fn fee_for_weight(feerate_sat_per_1000_weight: u32, weight: u64) -> u64 {
((feerate_sat_per_1000_weight as u64 * weight) + 1000 - 1) / 1000
}
/// The parameters required to derive a channel signer via [`SignerProvider`].
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct ChannelDerivationParameters {