Counts number of activations periodically and exists when no more found

count_activations_since.js

function getAuthFromWskCLI(){
  const { execSync } = require('child_process');
  let auth = execSync('bx wsk property get --auth',{encoding:'utf8'}).split('whisk auth')[1].trim()
  return auth;
}

let options = {
  apihost: process.env['__OW_API_HOST'] || 'https://openwhisk.ng.bluemix.net',
  api_key: process.env['__OW_API_KEY'] || getAuthFromWskCLI()
};
let ow = openwhisk(options);
let actionName = 'think2018';
let delay = 1800000; // 30 minutes (1800000) 1 minute (60000)
function findActivations(refInterval, since, result) {
  console.log(`Found ${result.activations} activations for ${actionName} since ${new Date(since).toLocaleString('en-US')}`);
  if (result.activations == 0) {
    //code here to do when there is no more activity (i.e tear down external long running container handling websockets, or kafka producer broker for example)
    clearInterval(refInterval)
  }
}
let refInterval = setInterval(() => {
  let since = new Date().getTime() - delay;
  ow.activations.list({
    name: actionName, 
    count: true, 
    since: since 
  }).then(findActivations.bind(null,refInterval,since))
}, delay)