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Merge calculateMempoolTxCpfp and calculateLocalTxCpfp

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natsoni 2025-01-09 14:35:34 +01:00
parent 6c95cd2149
commit 860bc7d14d
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2 changed files with 24 additions and 40 deletions
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4
backend/src/api/bitcoin/bitcoin.routes.ts
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@ -19,7 +19,7 @@ import bitcoinClient from './bitcoin-client';
import difficultyAdjustment from '../difficulty-adjustment'; import difficultyAdjustment from '../difficulty-adjustment';
import transactionRepository from '../../repositories/TransactionRepository'; import transactionRepository from '../../repositories/TransactionRepository';
import rbfCache from '../rbf-cache'; import rbfCache from '../rbf-cache';
import { calculateMempoolTxCpfp, calculateLocalTxCpfp } from '../cpfp'; import { calculateMempoolTxCpfp } from '../cpfp';
import { handleError } from '../../utils/api'; import { handleError } from '../../utils/api';
const TXID_REGEX = /^[a-f0-9]{64}$/i; const TXID_REGEX = /^[a-f0-9]{64}$/i;
@ -1011,7 +1011,7 @@ class BitcoinRoutes {
return; return;
} }
const cpfpInfo = calculateLocalTxCpfp(transactions[0], mempool.getMempool()); const cpfpInfo = calculateMempoolTxCpfp(transactions[0], mempool.getMempool(), true);
res.json([cpfpInfo]); res.json([cpfpInfo]);
} catch (e) { } catch (e) {

40
backend/src/api/cpfp.ts
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@ -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 * 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) * 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)) { if (tx.cpfpUpdated && Date.now() < (tx.cpfpUpdated + CPFP_UPDATE_INTERVAL)) {
tx.cpfpDirty = false; tx.cpfpDirty = false;
return { return {
@ -198,6 +200,13 @@ export function calculateMempoolTxCpfp(tx: MempoolTransactionExtended, mempool:
totalFee += tx.fees.base; totalFee += tx.fees.base;
} }
const effectiveFeePerVsize = totalFee / totalVsize; const effectiveFeePerVsize = totalFee / totalVsize;
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()) { for (const tx of cluster.values()) {
mempool[tx.txid].effectiveFeePerVsize = effectiveFeePerVsize; 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].ancestors = Array.from(tx.ancestors.values()).map(tx => ({ txid: tx.txid, weight: tx.weight, fee: tx.fees.base }));
@ -210,6 +219,8 @@ export function calculateMempoolTxCpfp(tx: MempoolTransactionExtended, mempool:
tx = mempool[tx.txid]; tx = mempool[tx.txid];
}
return { return {
ancestors: tx.ancestors || [], ancestors: tx.ancestors || [],
bestDescendant: tx.bestDescendant || null, bestDescendant: tx.bestDescendant || null,
@ -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, * Given a root transaction and a list of in-mempool ancestors,
* Calculate the CPFP cluster * Calculate the CPFP cluster