@coorpacademy/squirrel/lib/fs/restorer.js

Local mirror mecanism for ETCD

"use strict";

exports.__esModule = true;
exports.default = void 0;

var _fs = require("fs");

var _fp = require("lodash/fp");

var _rxjs = require("rxjs");

var _debug = _interopRequireDefault(require("debug"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const debug = (0, _debug.default)('squirrel:fallback');

const readFile$ = _rxjs.Observable.bindNodeCallback(_fs.readFile);

const restorePreloadedStore = preloadedStore => _rxjs.Observable.fromPromise(Promise.resolve(preloadedStore)).catch(() => _rxjs.Observable.empty());

const parseToEvent = store => ({
  type: 'fetch',
  payload: (0, _fp.values)(store)
});

const createRestorer$ = (filePath, preloadedStore) => {
  return readFile$(filePath, {
    encoding: 'UTF8'
  }).map(JSON.parse).filter(_fp.identity).do(() => debug(`Restore from file: ${filePath}`)).catch(() => preloadedStore ? restorePreloadedStore(preloadedStore).do(() => debug('Restore from preloadedStore')) : _rxjs.Observable.empty()).map(parseToEvent);
};

var _default = createRestorer$;
exports.default = _default;
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