Мониторинг записей

import Client, { CommitmentLevel, SubscribeRequest } from "@triton-one/yellowstone-grpc";

const client = new Client(
  "https://your-endpoint.grpc.orbitflare.com",
  "YOUR_GRPC_TOKEN",
  { "grpc.max_receive_message_length": 1024 * 1024 * 1024 }
);

async function main() {
  const stream = await client.subscribe();

  const streamClosed = new Promise<void>((resolve, reject) => {
    stream.on("error", (error) => {
      console.error("Ошибка потока:", error);
      reject(error);
      stream.end();
    });
    stream.on("end", () => resolve());
    stream.on("close", () => resolve());
  });

  stream.on("data", (data) => {
    if (data.entry) {
      const { slot, index, numHashes, hash, transactions, startingTransactionIndex } = data.entry;
      console.log(`Запись [слот ${slot}, индекс ${index}]:`);
      console.log(`  Хеш: ${Buffer.from(hash).toString("base64")}`);
      console.log(`  Количество хешей: ${numHashes}`);
      console.log(`  Транзакций в записи: ${transactions?.length ?? 0}`);
      console.log(`  Начальный индекс транзакции: ${startingTransactionIndex}`);
    } else if (data.pong) {
      console.log("Получен pong");
    }
  });

  const request: SubscribeRequest = {
    entry: {
      entryStream: {},
    },
    commitment: CommitmentLevel.PROCESSED,
    accounts: {},
    accountsDataSlice: [],
    transactions: {},
    transactionsStatus: {},
    slots: {},
    blocks: {},
    blocksMeta: {},
    ping: { id: 1 },
  };

  await new Promise<void>((resolve, reject) => {
    stream.write(request, (err) => {
      if (err == null) resolve(); else reject(err);
    });
  });

  setInterval(() => {
    stream.write({ ping: { id: 1 }, accounts: {}, accountsDataSlice: [], transactions: {}, transactionsStatus: {}, slots: {}, blocks: {}, blocksMeta: {}, entry: {} }, () => {});
  }, 30_000);

  await streamClosed;
}

main();

const request: SubscribeRequest = {
  entry: {
    entryStream: {},
  },
  slots: {
    slotUpdates: {
      filterByCommitment: true,
    },
  },
  commitment: CommitmentLevel.CONFIRMED,
  accounts: {},
  accountsDataSlice: [],
  transactions: {},
  transactionsStatus: {},
  blocks: {},
  blocksMeta: {},
};