Parse Lighthouse Instructions

parseLighthouseTx.ts

import {
  address,
  createSolanaRpc,
  getBase58Decoder,
  getBase58Encoder,
  signature,
} from "@solana/web3.js";
import { parseInstructionData } from "@codama/dynamic-parsers";
import { readFileSync } from "fs";

async function main() {
  const rawRoot = readFileSync("lighthouse.codama.json").toString();
  const rootNode = JSON.parse(rawRoot);

  const baseUrl =
    "api.mainnet-beta.solana.com";
  const rpc = createSolanaRpc(`https://${baseUrl}`, {});

  const tx = await rpc
    .getTransaction(
      signature( // Lighthouse Transactions
        // "2dW5WMPeoBBrVHuRsyJAs6iyC2VuDMirAvL3YKTNMtKnRrL3hkwTYwJisYP9vEojVymxjF8JXFRN8EUCtdZUNLq6"
        // "5dakXwp5QTySbvc6P1Wp9MLZubnnG4R1Dh6cWSgNv6w1xt2JMsTp7EZvWEUxk9YLbJZHG97TT3jMVJ4yMTXKjM2L"
        // "6LHBhFVLwuqiH93znCkyzMBZCkye5eHSBBeNZsz7m7M4SmJny9PQkiWtzdquEQvPfHVmn6bT6AeMa4pjNCVbefA"
        // "43PnzYerXr5b4LNf8A1j8kqztt8Voa7oiL9pzDTmWwSKCeLdZbLLJRd9A2XebiJvRP6kjNW6pF4mnGYnbSsRNXoU"
        // "5ZtLCLaUGDVXyCZhKLiiNTFqasqUAwahpEeFNHM86amL2awLDByWkuWAdz6C7gdt1GRmfDbjUooh8ozL6a5LUyeZ"
        // "5WA6DR6vBbyk6wsyxfFAQcsyFLLFamPFKWwgYMSpWbFdUBCCP2WweVggGKtrnJmUa8yyZE5ykqeaQe97daxpPMKZ"
        "2PmrAtG26M6g8YiokmgbqrJYT4Rhe3kRN3AY3WCcu7NPuX4Jc4aiXoNb5aZuFK48vYhm8pDmwZhVZ9sP6KMAdsKw"
      ),
      { maxSupportedTransactionVersion: 0 }
    )
    .send();

  if (!tx) {
    console.log("tx not found");
    return;
  }

  const ACCOUNTS = [
    ...tx.transaction.message.accountKeys,
    ...(tx.meta?.loadedAddresses.readonly ?? []),
    ...(tx.meta?.loadedAddresses.writable ?? []),
  ];
  tx.transaction.message.instructions.forEach((k) => {
    if (
      ACCOUNTS[k.programIdIndex] ===
      address("L2TExMFKdjpN9kozasaurPirfHy9P8sbXoAN1qA3S95")
    ) {
      const parsedData = parseInstructionData(
        rootNode,
        getBase58Encoder().encode(k.data)
      );
      console.log(parsedData);

      const accounts = k.accounts.map((index) => ACCOUNTS[index]);
      const data = getBase58Encoder().encode(k.data);
      console.log(
        "{ keys: [" +
          accounts
            .map(
              (account) =>
                `{ pubkey: new PublicKey("${account}"), isWritable: false, isSigner: false }`
            )
            .join(",") +
          "], data: Buffer.from([" +
          data.join(",") +
          "]), programId: new PublicKey('" +
          ACCOUNTS[k.programIdIndex] +
          "') }"
      );
    }
  });
}

main();