@backstage/backend-defaults/dist/entrypoints/rootHttpRouter/createHealthRouter.cjs.js

Backend defaults used by Backstage backend apps

'use strict';

var Router = require('express-promise-router');

function _interopDefaultCompat (e) { return e && typeof e === 'object' && 'default' in e ? e : { default: e }; }

var Router__default = /*#__PURE__*/_interopDefaultCompat(Router);

const HEADER_CONFIG_KEY = "backend.health.headers";
function createHealthRouter(options) {
  const headersConfig = options.config.getOptionalConfig(HEADER_CONFIG_KEY)?.get();
  if (headersConfig) {
    for (const [key, value] of Object.entries(headersConfig)) {
      if (!key || typeof key !== "string") {
        throw new Error(
          `Invalid header name in at ${HEADER_CONFIG_KEY}, must be a non-empty string`
        );
      }
      if (!value || typeof value !== "string") {
        throw new Error(
          `Invalid header value in at ${HEADER_CONFIG_KEY}, must be a non-empty string`
        );
      }
    }
  }
  const headers = headersConfig && new Headers(headersConfig);
  const router = Router__default.default();
  router.get(
    "/.backstage/health/v1/readiness",
    async (_request, response) => {
      const { status, payload } = await options.health.getReadiness();
      if (headers) {
        response.setHeaders(headers);
      }
      response.status(status).json(payload);
    }
  );
  router.get(
    "/.backstage/health/v1/liveness",
    async (_request, response) => {
      const { status, payload } = await options.health.getLiveness();
      if (headers) {
        response.setHeaders(headers);
      }
      response.status(status).json(payload);
    }
  );
  return router;
}

exports.createHealthRouter = createHealthRouter;
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