adastra-ui-comment/source/utils/lookupService.ts

Testing locally 1) in this file - `npm i` install dependencies - `npm run build` or `npm run tsc` to build your module 2) in childApp - in package.json under dependencies add ui-astra-assets with file:(relativePathToRepo) - "ui-astra-a

import { DiscoverySdk } from '@adastradev/serverless-discovery-sdk';
import Cache from '@aws-amplify/cache';
import { call } from 'redux-saga/effects';
import moment from 'moment';

/*
 *  Return and cache the latest URI for a service.
 */

export default async function lookupService(serviceName, retry?) {

  if (!retry && Cache.getItem(`${serviceName}-uri`)) {
    return Cache.getItem(`${serviceName}-uri`);
  }

  const sdk = new DiscoverySdk(
    process.env.REACT_APP_SERVICE_DISCOVERY_URL as string,
    process.env.REACT_APP_SERVICE_DISCOVERY_REGION,
    process.env.REACT_APP_SERVICE_DISCOVERY_STAGE,
    undefined,
    // Require cloudDependencies in from package.json
    new Map(Object.entries(require('../../package.json')['cloudDependencies'])),
  );

  const endpoints = await sdk.lookupService(
    serviceName,
  );

  Cache.setItem(`${serviceName}-uri`, endpoints[0], {
    priority: 1,
    expires: moment().add(5, 'm').valueOf(),
  });
  return endpoints[0];
}

/*
 *  We're hoping to reset our Cache'ed URI for the service because we recieved a
 *  "not lastest service error". We want to check if the URI actually changed. Then
 *  re-call the saga with it's action (data).
 */

export function* retrySagaWithNewService(serviceName, callBackSaga, callBackAction) {
  const pastEndpoint = Cache.getItem(`${serviceName}-uri`);
  const endpoint = yield call(lookupService, serviceName, true);
  if (pastEndpoint === endpoint) {
    throw 'Service URI has not changed';
  }

  yield call(callBackSaga, callBackAction);
}