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load mempool txs in bulk from esplora

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This commit is contained in:
Mononaut
2023-07-22 14:09:11 +09:00
parent e2fdacfddd
commit 202d4122b4
4 changed files with 86 additions and 35 deletions
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93
backend/src/api/mempool.ts
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@@ -1,5 +1,5 @@
import config from '../config';
import bitcoinApi from './bitcoin/bitcoin-api-factory';
import bitcoinApi, { bitcoinCoreApi } from './bitcoin/bitcoin-api-factory';
import { MempoolTransactionExtended, TransactionExtended, VbytesPerSecond } from '../mempool.interfaces';
import logger from '../logger';
import { Common } from './common';
@@ -103,6 +103,16 @@ class Mempool {
this.addToSpendMap(Object.values(this.mempoolCache));
}
public async $reloadMempool(expectedCount: number): Promise<void> {
const rawTransactions = await bitcoinApi.$getMempoolTransactions(expectedCount);
logger.info(`Inserting loaded mempool transactions into local cache`);
for (const transaction of rawTransactions) {
const extendedTransaction = transactionUtils.extendMempoolTransaction(transaction);
this.mempoolCache[extendedTransaction.txid] = extendedTransaction;
}
logger.info(`Done inserting loaded mempool transactions into local cache`);
}
public async $updateMemPoolInfo() {
this.mempoolInfo = await this.$getMempoolInfo();
}
@@ -162,41 +172,54 @@ class Mempool {
};
let intervalTimer = Date.now();
for (const txid of transactions) {
if (!this.mempoolCache[txid]) {
try {
const transaction = await transactionUtils.$getMempoolTransactionExtended(txid, false, false, false);
this.updateTimerProgress(timer, 'fetched new transaction');
this.mempoolCache[txid] = transaction;
if (this.inSync) {
this.txPerSecondArray.push(new Date().getTime());
this.vBytesPerSecondArray.push({
unixTime: new Date().getTime(),
vSize: transaction.vsize,
});
}
hasChange = true;
newTransactions.push(transaction);
} catch (e: any) {
if (config.MEMPOOL.BACKEND === 'esplora' && e.response?.status === 404) {
this.missingTxCount++;
}
logger.debug(`Error finding transaction '${txid}' in the mempool: ` + (e instanceof Error ? e.message : e));
}
}
if (Date.now() - intervalTimer > 5_000) {
if (this.inSync) {
// Break and restart mempool loop if we spend too much time processing
// new transactions that may lead to falling behind on block height
logger.debug('Breaking mempool loop because the 5s time limit exceeded.');
break;
} else {
const progress = (currentMempoolSize + newTransactions.length) / transactions.length * 100;
logger.debug(`Mempool is synchronizing. Processed ${newTransactions.length}/${diff} txs (${Math.round(progress)}%)`);
loadingIndicators.setProgress('mempool', progress);
intervalTimer = Date.now()
let loaded = false;
if (config.MEMPOOL.BACKEND === 'esplora' && currentMempoolSize < transactions.length * 0.5 && transactions.length > 20_000) {
logger.info(`Missing ${transactions.length - currentMempoolSize} mempool transactions, attempting to reload in bulk from esplora`);
try {
await this.$reloadMempool(transactions.length);
loaded = true;
} catch (e) {
logger.err('failed to load mempool in bulk from esplora, falling back to fetching individual transactions');
}
}
if (!loaded) {
for (const txid of transactions) {
if (!this.mempoolCache[txid]) {
try {
const transaction = await transactionUtils.$getMempoolTransactionExtended(txid, false, false, false);
this.updateTimerProgress(timer, 'fetched new transaction');
this.mempoolCache[txid] = transaction;
if (this.inSync) {
this.txPerSecondArray.push(new Date().getTime());
this.vBytesPerSecondArray.push({
unixTime: new Date().getTime(),
vSize: transaction.vsize,
});
}
hasChange = true;
newTransactions.push(transaction);
} catch (e: any) {
if (config.MEMPOOL.BACKEND === 'esplora' && e.response?.status === 404) {
this.missingTxCount++;
}
logger.debug(`Error finding transaction '${txid}' in the mempool: ` + (e instanceof Error ? e.message : e));
}
}
if (Date.now() - intervalTimer > 5_000) {
if (this.inSync) {
// Break and restart mempool loop if we spend too much time processing
// new transactions that may lead to falling behind on block height
logger.debug('Breaking mempool loop because the 5s time limit exceeded.');
break;
} else {
const progress = (currentMempoolSize + newTransactions.length) / transactions.length * 100;
logger.debug(`Mempool is synchronizing. Processed ${newTransactions.length}/${diff} txs (${Math.round(progress)}%)`);
loadingIndicators.setProgress('mempool', progress);
intervalTimer = Date.now()
}
}
}
}