Vulcan/packages/vulcan-events-segment/lib/server/segment-server.js

import Analytics from 'analytics-node';
import { getSetting, addCallback, Utils } from 'meteor/vulcan:core';
import { addPageFunction, addInitFunction, addIdentifyFunction, addTrackFunction } from 'meteor/vulcan:events';

const segmentWriteKey = getSetting('segment.serverKey');

if (segmentWriteKey) {

  const analytics = new Analytics(segmentWriteKey);

  /*

  Identify User

  */
  function segmentIdentifyServer(currentUser) {
    analytics.identify({
      userId: currentUser._id,
      traits: {
        email: currentUser.email,
        pageUrl: currentUser.pageUrl,
      },
    });
  }
  addIdentifyFunction(segmentIdentifyServer);

  /*

  Track Event

  */
  function segmentTrackServer(eventName, eventProperties, currentUser) {
    analytics.track({
      event: eventName,
      properties: eventProperties,
      userId: currentUser && currentUser._id,
    });
  }
  addTrackFunction(segmentTrackServer);
}