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Fetch block txs from mempool/electrs in bulk

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This commit is contained in:
Mononaut
2023-07-24 16:58:30 +09:00
parent 81d1c0a4d5
commit 0ebfd6f017
5 changed files with 42 additions and 35 deletions
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66
backend/src/api/blocks.ts
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@@ -80,40 +80,38 @@ class Blocks {
quiet: boolean = false,
addMempoolData: boolean = false,
): Promise<TransactionExtended[]> {
const transactions: TransactionExtended[] = [];
if (!txIds) {
txIds = await bitcoinApi.$getTxIdsForBlock(blockHash);
}
let transactions: TransactionExtended[] = [];
const mempool = memPool.getMempool();
let transactionsFound = 0;
let transactionsFetched = 0;
for (let i = 0; i < txIds.length; i++) {
if (mempool[txIds[i]]) {
// We update blocks before the mempool (index.ts), therefore we can
// optimize here by directly fetching txs in the "outdated" mempool
transactions.push(mempool[txIds[i]]);
transactionsFound++;
} else if (config.MEMPOOL.BACKEND === 'esplora' || !memPool.hasPriority() || i === 0) {
// Otherwise we fetch the tx data through backend services (esplora, electrum, core rpc...)
if (!quiet && (i % (Math.round((txIds.length) / 10)) === 0 || i + 1 === txIds.length)) { // Avoid log spam
logger.debug(`Indexing tx ${i + 1} of ${txIds.length} in block #${blockHeight}`);
}
try {
const tx = await transactionUtils.$getTransactionExtended(txIds[i], false, false, false, addMempoolData);
transactions.push(tx);
transactionsFetched++;
} catch (e) {
if (config.MEMPOOL.BACKEND === 'esplora') {
const rawTransactions = await bitcoinApi.$getTxsForBlock(blockHash);
transactions = rawTransactions.map(tx => transactionUtils.extendTransaction(tx));
if (!quiet) {
logger.debug(`${transactions.length} fetched through backend service.`);
}
} else {
if (!txIds) {
txIds = await bitcoinApi.$getTxIdsForBlock(blockHash);
}
for (let i = 0; i < txIds.length; i++) {
if (mempool[txIds[i]]) {
// We update blocks before the mempool (index.ts), therefore we can
// optimize here by directly fetching txs in the "outdated" mempool
transactions.push(mempool[txIds[i]]);
transactionsFound++;
} else if (!memPool.hasPriority() || i === 0) {
// Otherwise we fetch the tx data through backend services (esplora, electrum, core rpc...)
if (!quiet && (i % (Math.round((txIds.length) / 10)) === 0 || i + 1 === txIds.length)) { // Avoid log spam
logger.debug(`Indexing tx ${i + 1} of ${txIds.length} in block #${blockHeight}`);
}
try {
if (config.MEMPOOL.BACKEND === 'esplora') {
// Try again with core
const tx = await transactionUtils.$getTransactionExtended(txIds[i], false, false, true, addMempoolData);
transactions.push(tx);
transactionsFetched++;
} else {
throw e;
}
const tx = await transactionUtils.$getTransactionExtended(txIds[i], false, false, false, addMempoolData);
transactions.push(tx);
transactionsFetched++;
} catch (e) {
if (i === 0) {
const msg = `Cannot fetch coinbase tx ${txIds[i]}. Reason: ` + (e instanceof Error ? e.message : e);
@@ -124,17 +122,17 @@ class Blocks {
}
}
}
if (onlyCoinbase === true) {
break; // Fetch the first transaction and exit
}
}
if (onlyCoinbase === true) {
break; // Fetch the first transaction and exit
if (!quiet) {
logger.debug(`${transactionsFound} of ${txIds.length} found in mempool. ${transactionsFetched} fetched through backend service.`);
}
}
if (!quiet) {
logger.debug(`${transactionsFound} of ${txIds.length} found in mempool. ${transactionsFetched} fetched through backend service.`);
}
return transactions;
}