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Mini-miner based block cpfp calculations

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Mononaut 2024-04-06 02:24:22 +00:00
parent 27374bd131
commit 41c373c39d
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2 changed files with 73 additions and 9 deletions
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11
backend/src/api/blocks.ts
View File

@ -31,6 +31,7 @@ import rbfCache from './rbf-cache';
import { calcBitsDifference } from './difficulty-adjustment';
import AccelerationRepository from '../repositories/AccelerationRepository';
import { calculateFastBlockCpfp, calculateGoodBlockCpfp } from './cpfp';
import mempool from './mempool';
class Blocks {
private blocks: BlockExtended[] = [];
@ -602,13 +603,13 @@ class Blocks {
for (let height = currentBlockHeight; height >= 0; height--) {
try {
let txs: TransactionExtended[] | null = null;
let txs: MempoolTransactionExtended[] | null = null;
if (unclassifiedBlocks[height]) {
const blockHash = unclassifiedBlocks[height];
// fetch transactions
txs = (await bitcoinApi.$getTxsForBlock(blockHash)).map(tx => transactionUtils.extendTransaction(tx)) || [];
txs = (await bitcoinApi.$getTxsForBlock(blockHash)).map(tx => transactionUtils.extendMempoolTransaction(tx)) || [];
// add CPFP
const cpfpSummary = calculateFastBlockCpfp(height, txs, true);
const cpfpSummary = calculateGoodBlockCpfp(height, txs, []);
// classify
const { transactions: classifiedTxs } = this.summarizeBlockTransactions(blockHash, cpfpSummary.transactions);
await BlocksSummariesRepository.$saveTransactions(height, blockHash, classifiedTxs, 1);
@ -637,7 +638,7 @@ class Blocks {
}
templateTxs.push(tx || templateTx);
}
const cpfpSummary = calculateFastBlockCpfp(height, templateTxs?.filter(tx => tx['effectiveFeePerVsize'] != null) as TransactionExtended[], true);
const cpfpSummary = calculateGoodBlockCpfp(height, templateTxs?.filter(tx => tx['effectiveFeePerVsize'] != null) as MempoolTransactionExtended[], []);
// classify
const { transactions: classifiedTxs } = this.summarizeBlockTransactions(blockHash, cpfpSummary.transactions);
const classifiedTxMap: { [txid: string]: TransactionClassified } = {};
@ -891,7 +892,7 @@ class Blocks {
}
}
const cpfpSummary: CpfpSummary = calculateGoodBlockCpfp(block.height, transactions);
const cpfpSummary: CpfpSummary = calculateGoodBlockCpfp(block.height, transactions, Object.values(mempool.getAccelerations()).map(a => ({ txid: a.txid, max_bid: a.feeDelta })));
const blockExtended: BlockExtended = await this.$getBlockExtended(block, cpfpSummary.transactions);
const blockSummary: BlockSummary = this.summarizeBlockTransactions(block.id, cpfpSummary.transactions);
this.updateTimerProgress(timer, `got block data for ${this.currentBlockHeight}`);

71
backend/src/api/cpfp.ts
View File

@ -1,6 +1,7 @@
import { CpfpCluster, CpfpInfo, CpfpSummary, MempoolTransactionExtended, TransactionExtended } from '../mempool.interfaces';
import { GraphTx, convertToGraphTx, expandRelativesGraph, initializeRelatives, mempoolComparator, removeAncestors, setAncestorScores } from './mini-miner';
import { Ancestor, CpfpCluster, CpfpInfo, CpfpSummary, MempoolTransactionExtended, TransactionExtended } from '../mempool.interfaces';
import { GraphTx, convertToGraphTx, expandRelativesGraph, initializeRelatives, makeBlockTemplate, mempoolComparator, removeAncestors, setAncestorScores } from './mini-miner';
import memPool from './mempool';
import { Acceleration } from './acceleration';
const CPFP_UPDATE_INTERVAL = 60_000; // update CPFP info at most once per 60s per transaction
const MAX_CLUSTER_ITERATIONS = 100;
@ -95,8 +96,70 @@ export function calculateFastBlockCpfp(height: number, transactions: Transaction
};
}
export function calculateGoodBlockCpfp(height: number, transactions: TransactionExtended[]): CpfpSummary {
return calculateFastBlockCpfp(height, transactions, true);
export function calculateGoodBlockCpfp(height: number, transactions: MempoolTransactionExtended[], accelerations: Acceleration[]): CpfpSummary {
const txMap: { [txid: string]: MempoolTransactionExtended } = {};
for (const tx of transactions) {
txMap[tx.txid] = tx;
}
const template = makeBlockTemplate(transactions, accelerations, 1, Infinity, Infinity);
const clusters = new Map<string, string[]>();
for (const tx of template) {
const cluster = tx.cluster || [];
const root = cluster.length ? cluster[cluster.length - 1] : null;
if (cluster.length > 1 && root && !clusters.has(root)) {
clusters.set(root, cluster);
}
txMap[tx.txid].effectiveFeePerVsize = tx.effectiveFeePerVsize;
}
const clusterArray: CpfpCluster[] = [];
for (const cluster of clusters.values()) {
for (const txid of cluster) {
const mempoolTx = txMap[txid];
if (mempoolTx) {
const ancestors: Ancestor[] = [];
const descendants: Ancestor[] = [];
let matched = false;
cluster.forEach(relativeTxid => {
if (relativeTxid === txid) {
matched = true;
} else {
const relative = {
txid: relativeTxid,
fee: txMap[relativeTxid].fee,
weight: (txMap[relativeTxid].adjustedVsize * 4) || txMap[relativeTxid].weight,
};
if (matched) {
descendants.push(relative);
} else {
ancestors.push(relative);
}
}
});
if (mempoolTx.ancestors?.length !== ancestors.length || mempoolTx.descendants?.length !== descendants.length) {
mempoolTx.cpfpDirty = true;
}
Object.assign(mempoolTx, { ancestors, descendants, bestDescendant: null, cpfpChecked: true });
}
}
const root = cluster[cluster.length - 1];
clusterArray.push({
root: root,
height,
txs: cluster.reverse().map(txid => ({
txid,
fee: txMap[txid].fee,
weight: (txMap[txid].adjustedVsize * 4) || txMap[txid].weight,
})),
effectiveFeePerVsize: txMap[root].effectiveFeePerVsize,
});
}
return {
transactions: transactions.map(tx => txMap[tx.txid]),
clusters: clusterArray,
};
}
/**