@tvkitchen/countertop/dist/classes/CountertopStation.js

The entry point for developers who want to set up a TV Kitchen.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _uuid = require("uuid");

var _constants = require("../constants");

var _loggers = require("../tools/loggers");

var _CountertopWorker = _interopRequireDefault(require("./CountertopWorker"));

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

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

class CountertopStation {
  /**
   * Create a CountertopStation
   *
   * @param  {Class}  Appliance         The IAppliance class that this station will manage.
   * @param  {Object} applianceSettings Settings for the appliance.
   * @param  {Logger} options.logger    A logger with methods for all TV Kitchen logLevels.
   */
  constructor(Appliance, applianceSettings = {}, {
    logger = _loggers.consoleLogger,
    kafka
  } = {}) {
    _defineProperty(this, "logger", null);

    _defineProperty(this, "kafka", null);

    _defineProperty(this, "id", null);

    _defineProperty(this, "Appliance", null);

    _defineProperty(this, "applianceSettings", null);

    _defineProperty(this, "workers", []);

    _defineProperty(this, "state", '');

    _defineProperty(this, "invokeTopology", topology => {
      this.logger.trace(`CountertopStation<${this.id}>: invokeTopology()`);

      if (this.getState() !== _constants.countertopStates.STOPPED) {
        throw new Error('CountertopStations must be stopped before invoking a topology.');
      }

      const stationStreams = topology.streams.filter(stream => stream.getMouth() === this);
      this.workers = stationStreams.map(stream => new _CountertopWorker.default(this.Appliance, this.applianceSettings, {
        stream,
        logger: this.logger,
        kafka: this.kafka
      }));
      return this.workers;
    });

    _defineProperty(this, "start", async () => {
      this.logger.trace(`CountertopStation<${this.id}>: start()`);
      this.state = _constants.countertopStates.STARTING;
      const promises = this.workers.map(async worker => worker.start());
      const started = (await Promise.all(promises)).every(result => result);
      this.setState(started ? _constants.countertopStates.STARTED : _constants.countertopStates.ERRORED);
      return this.getState() === _constants.countertopStates.STARTED;
    });

    _defineProperty(this, "stop", async () => {
      this.logger.trace(`CountertopStation<${this.id}>: stop()`);
      this.setState(_constants.countertopStates.STOPPING);
      const promises = this.workers.map(async worker => worker.stop());
      const stopped = (await Promise.all(promises)).every(result => result);
      this.setState(stopped ? _constants.countertopStates.STOPPED : _constants.countertopStates.ERRORED);
      return this.getState() === _constants.countertopStates.STOPPED;
    });

    _defineProperty(this, "getInputTypes", () => this.Appliance.getInputTypes(this.applianceSettings));

    _defineProperty(this, "getOutputTypes", () => this.Appliance.getOutputTypes(this.applianceSettings));

    _defineProperty(this, "getState", () => this.state);

    _defineProperty(this, "setState", state => {
      this.state = state;
    });

    _defineProperty(this, "on", (eventType, listener) => {
      this.workers.forEach(worker => worker.on(eventType, listener));
      return this;
    });

    if (Appliance === undefined) {
      throw new Error('CountertopStation requires an Appliance.');
    }

    this.Appliance = Appliance;
    this.applianceSettings = applianceSettings;
    this.logger = logger;
    this.kafka = kafka;
    this.id = `${Appliance.name}::${(0, _uuid.v4)()}`;
    this.setState(_constants.countertopStates.STOPPED);
  }
  /**
   * Replace the station's workers in order to fit a specified topology.
   *
   * @param  {CountertopToplogy} topology The topology to use.
   * @return {CountertopWorker[]}         The new set of workers.
   */


}

var _default = CountertopStation;
exports.default = _default;