Node环境下分片上传时计算Buffer的sha256哈希值有问题

[MorningK]

读取分片和计算hash值

async function readFileAsBuffers(filePath: string) {
  const state = await stat(filePath);
  logger.info("read file buffer %s, %s", filePath, state.size);
  if (state.size > maxRawFileSize) {
    // 读取文件内容为 Buffer
    const readStream = fs.createReadStream(filePath, { highWaterMark: chunkSize });
    const buffers: Buffer[] = await readStream.toArray();
    return buffers;
  }
  const buffer = await readFile(filePath);
  return [buffer];
}

function computeBufferHash(buffer: Buffer, algorithm = "sha256", encoding = "hex") {
  return crypto
    .createHash(algorithm)
    .update(buffer)
    .digest(encoding as crypto.BinaryToTextEncoding);
}

需要手动覆盖计算的hash值，设置bodySha256参数

  const signer = new Signer(openApiRequestData, "up", hash ? { bodySha256: hash } : undefined);

  const credential = {
    accessKeyId: process.env.accessKeyId,
    secretKey: process.env.secretKey,
  };

  // sign
  signer.addAuthorization(credential);

  if (hash && hash !== openApiRequestData.headers["X-Content-Sha256"]) {
    logger.info(
      "X-Content-Sha256 not match %s, %s, %s",
      action,
      hash,
      openApiRequestData.headers["X-Content-Sha256"]
    );
    openApiRequestData.headers["X-Content-Sha256"] = hash;
  }