Sample node.js script to post data to custom metric api endpoint of SAP Cloud Platform's Auto Scaler Service

autoscaler.js

var request = require("request");
var cfenv = require("cfenv")
var appEnv = cfenv.getAppEnv()
var as_cred = appEnv.getServiceCreds('as');

var custom_metric_url = as_cred.custom_metrics.url+'/v1/apps/'+process.env.CF_INSTANCE_GUID+'/metrics',
auth = "Basic " + Buffer.from(as_cred.custom_metrics.username+ ":" +as_cred.custom_metrics.password).toString("base64");

console.log('user name ='+as_cred.custom_metrics.username)
console.log('password ='+ as_cred.custom_metrics.password)
console.log('url='+as_cred.custom_metrics.url)
console.log('Instance Index='+process.env.CF_INSTANCE_INDEX)
console.log('GUID ='+process.env.CF_INSTANCE_GUID)
console.log('basic auth ='+auth)

var options = { method: 'POST',
  url:custom_metric_url,
  headers: 
   { 
     Authorization:auth,
      },
  body: 
   { instance_index: process.env.CF_INSTANCE_INDEX,
     metrics: [ { name: 'testmetric', value: 30, unit: 'unit' } ] },
  json: true };


request(options, function (error, response, body) {
  if (error) throw new Error(error);

  console.log(body);
});