openclaw/scripts/lib/docker-e2e-json-artifacts.mts

import fs from "node:fs";
import { parsePositiveInt } from "./numeric-options.mjs";

const JSON_ARTIFACT_MAX_BYTES_ENV = "OPENCLAW_DOCKER_E2E_JSON_ARTIFACT_MAX_BYTES";
const DEFAULT_JSON_ARTIFACT_MAX_BYTES = 16 * 1024 * 1024;

export function readDockerE2eJsonArtifact(file: string): unknown {
  const maxBytes = parsePositiveInt(
    process.env[JSON_ARTIFACT_MAX_BYTES_ENV] || String(DEFAULT_JSON_ARTIFACT_MAX_BYTES),
    JSON_ARTIFACT_MAX_BYTES_ENV,
  );
  const stat = fs.statSync(file);
  if (!stat.isFile()) {
    throw new Error(`JSON artifact is not a file: ${file}`);
  }
  if (stat.size > maxBytes) {
    throw new Error(`JSON artifact exceeded ${maxBytes} bytes: ${file} (${stat.size} bytes)`);
  }
  const text = fs.readFileSync(file, "utf8");
  const bytes = Buffer.byteLength(text, "utf8");
  if (bytes > maxBytes) {
    throw new Error(`JSON artifact exceeded ${maxBytes} bytes: ${file} (${bytes} bytes)`);
  }
  return JSON.parse(text);
}