mirrors/mempool
1
0
Fork 0
mirror of https://github.com/mempool/mempool.git synced 2025-02-23 22:46:54 +01:00
Code Issues Projects Releases Wiki Activity

Merge calculateMempoolTxCpfp and calculateLocalTxCpfp

Browse source
This commit is contained in:
natsoni 2025-01-09 14:35:34 +01:00
parent 6c95cd2149
commit 860bc7d14d
No known key found for this signature in database
GPG key ID: C65917583181743B
2 changed files with 24 additions and 40 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
backend/src/api/bitcoin/bitcoin.routes.ts
View file

@ -19,7 +19,7 @@ import bitcoinClient from './bitcoin-client';
import difficultyAdjustment from '../difficulty-adjustment';
import transactionRepository from '../../repositories/TransactionRepository';
import rbfCache from '../rbf-cache';
import { calculateMempoolTxCpfp, calculateLocalTxCpfp } from '../cpfp';
import { calculateMempoolTxCpfp } from '../cpfp';
import { handleError } from '../../utils/api';
const TXID_REGEX = /^[a-f0-9]{64}$/i;
@ -1011,7 +1011,7 @@ class BitcoinRoutes {
return;
}
const cpfpInfo = calculateLocalTxCpfp(transactions[0], mempool.getMempool());
const cpfpInfo = calculateMempoolTxCpfp(transactions[0], mempool.getMempool(), true);
res.json([cpfpInfo]);
} catch (e) {

60
backend/src/api/cpfp.ts
View file

@ -167,8 +167,10 @@ export function calculateGoodBlockCpfp(height: number, transactions: MempoolTran
/**
* Takes a mempool transaction and a copy of the current mempool, and calculates the CPFP data for
* that transaction (and all others in the same cluster)
* If the passed transaction is not guaranteed to be in the mempool, set localTx to true: this will
* prevent updating the CPFP data of other transactions in the cluster
*/
export function calculateMempoolTxCpfp(tx: MempoolTransactionExtended, mempool: { [txid: string]: MempoolTransactionExtended }): CpfpInfo {
export function calculateMempoolTxCpfp(tx: MempoolTransactionExtended, mempool: { [txid: string]: MempoolTransactionExtended }, localTx: boolean = false): CpfpInfo {
if (tx.cpfpUpdated && Date.now() < (tx.cpfpUpdated + CPFP_UPDATE_INTERVAL)) {
tx.cpfpDirty = false;
return {
@ -198,17 +200,26 @@ export function calculateMempoolTxCpfp(tx: MempoolTransactionExtended, mempool:
totalFee += tx.fees.base;
}
const effectiveFeePerVsize = totalFee / totalVsize;
for (const tx of cluster.values()) {
mempool[tx.txid].effectiveFeePerVsize = effectiveFeePerVsize;
mempool[tx.txid].ancestors = Array.from(tx.ancestors.values()).map(tx => ({ txid: tx.txid, weight: tx.weight, fee: tx.fees.base }));
mempool[tx.txid].descendants = Array.from(cluster.values()).filter(entry => entry.txid !== tx.txid && !tx.ancestors.has(entry.txid)).map(tx => ({ txid: tx.txid, weight: tx.weight, fee: tx.fees.base }));
mempool[tx.txid].bestDescendant = null;
mempool[tx.txid].cpfpChecked = true;
mempool[tx.txid].cpfpDirty = true;
mempool[tx.txid].cpfpUpdated = Date.now();
}
tx = mempool[tx.txid];
if (localTx) {
tx.effectiveFeePerVsize = effectiveFeePerVsize;
tx.ancestors = Array.from(cluster.get(tx.txid)?.ancestors.values() || []).map(ancestor => ({ txid: ancestor.txid, weight: ancestor.weight, fee: ancestor.fees.base }));
tx.descendants = Array.from(cluster.values()).filter(entry => entry.txid !== tx.txid && !cluster.get(tx.txid)?.ancestors.has(entry.txid)).map(tx => ({ txid: tx.txid, weight: tx.weight, fee: tx.fees.base }));
tx.bestDescendant = null;
} else {
for (const tx of cluster.values()) {
mempool[tx.txid].effectiveFeePerVsize = effectiveFeePerVsize;
mempool[tx.txid].ancestors = Array.from(tx.ancestors.values()).map(tx => ({ txid: tx.txid, weight: tx.weight, fee: tx.fees.base }));
mempool[tx.txid].descendants = Array.from(cluster.values()).filter(entry => entry.txid !== tx.txid && !tx.ancestors.has(entry.txid)).map(tx => ({ txid: tx.txid, weight: tx.weight, fee: tx.fees.base }));
mempool[tx.txid].bestDescendant = null;
mempool[tx.txid].cpfpChecked = true;
mempool[tx.txid].cpfpDirty = true;
mempool[tx.txid].cpfpUpdated = Date.now();
}
tx = mempool[tx.txid];
}
return {
ancestors: tx.ancestors || [],
@ -222,33 +233,6 @@ export function calculateMempoolTxCpfp(tx: MempoolTransactionExtended, mempool:
};
}
/**
* Takes an unbroadcasted transaction and a copy of the current mempool, and calculates an estimate
* of the CPFP data if the transaction were to enter the mempool. This only returns potential ancerstors
* and effective fee rate, and does not update the CPFP data of other transactions in the cluster.
*/
export function calculateLocalTxCpfp(tx: MempoolTransactionExtended, mempool: { [txid: string]: MempoolTransactionExtended }): CpfpInfo {
const ancestorMap = new Map<string, GraphTx>();
const graphTx = convertToGraphTx(tx, memPool.getSpendMap());
ancestorMap.set(tx.txid, graphTx);
const allRelatives = expandRelativesGraph(mempool, ancestorMap, memPool.getSpendMap());
const relativesMap = initializeRelatives(allRelatives);
const cluster = calculateCpfpCluster(tx.txid, relativesMap);
let totalVsize = 0;
let totalFee = 0;
for (const tx of cluster.values()) {
totalVsize += tx.vsize;
totalFee += tx.fees.base;
}
return {
ancestors: Array.from(cluster.get(tx.txid)?.ancestors.values() || []).map(ancestor => ({ txid: ancestor.txid, weight: ancestor.weight, fee: ancestor.fees.base })),
effectiveFeePerVsize: totalFee / totalVsize
}
}
/**
* Given a root transaction and a list of in-mempool ancestors,
* Calculate the CPFP cluster