dpaw-qweb-app/src/relay-driver.js

Simple viewer app to interface with QGIS/monorail

/**
 * @fileOverview
 * @name relay-driver.js
 * @author Gavin Coombes
 * @license BSD-3-Clause
 *
 */

let Rx = require('rx');
let Relay = require('dpaw-brocket-relay');
let u = require('dpaw-brocket-utility');
let log = u.log;
let Obs = Rx.Observable;

function makeRelayDriver(opts) {

  let relay = Object.create(Relay);
  let relayOpts = {
    baseAddr: "wss://brocket.dpaw.wa.gov.au",
    channel: 'dendrite',
    appID: 'qgis',
    userID: 'gavinco'
  };
  relay.init(relayOpts);
  relay.on('message', msg => log('monorail.plugin received msg', msg));
  relay.on('dispatch', msg => log('monorail.plugin dispatched msg', msg));
  relay.subscribe(msg => log('Subscriber received msg ', msg));
  relay.connect();
  relay.on('pub/open', () => {
    relay.dispatch({tag: 'wrapped', payload: {tag: 'unwrapped', payload: ['message']}});
    log('Pub channel open');
  });

  function relayDriver(outgoing$) {
    outgoing$.subscribe( msg => relay.dispatch(msg) );
    let incoming$ = relay.message$
          .do(msg => log('RelayDriver.incoming: prefilter <- msg is ', msg))
          .filter( msg => !u.isUndefined(msg))
          .do(msg => log('RelayDriver.incoming: postfilter -> msg is ', msg))
          .share();
    let incoming2$ = Obs.interval(5000)
          .map(() => ({tag: 'beat', payload: {msg: 'dadum'}}));
    let incoming3$ = Obs.interval(5000)
          .map(() => ("{\"tag\": \"beat\", \"payload\": {msg: \"dadum\"}}"));
    log('Leaving relayDriver');
    return incoming$;
  }

  return relayDriver;

}

function transfer(msg) {
  return msg;
}

module.exports = makeRelayDriver;