Rackspace Service Registry EventsFeedPoller Node.js client class example

gistfile1.js

/**
 * En example which uses EventsFeedPoller abstraction to poll the events feed
 * and print all of the events to the standard output.
 */
var Client = require('../lib').Client;
var EventsFeedPoller = require('../lib').EventsFeedPoller;

var EVENT_KEYS = [
  'service.join',
  'service.timeout',
  'service.remove',
  'configuration_value.update',
  'configuration_value.remove'
];

var client = new Client('myusername', 'myapikey', 'us');
var eventsPoller = new EventsFeedPoller(client.events, {'pollInterval': 5});

function printEmittedEvent(type) {
  return function(payload) {
    console.log('Event type: ' + type);
    console.log('Event payload: ' + JSON.stringify(payload));
  };
}

// Add listener for all the available events
EVENT_KEYS.forEach(function(key) {
  eventsPoller.on(key, printEmittedEvent(key));
});

eventsPoller.on('error', function(err) {
  console.log('Error occured: ' + err.toString());
});

// Start polling
eventsPoller.start();