Running Prometheus Query and exporting data into Geckoboard

prometheus-to-geckoboard.gs

#
# Google Apps Script
#

#
# To set a "cron" trigger:
#     Edit > Current project's triggers > Add a new Trigger > "Main" function > Every 5 minutes
#

var GECKOBOARD_TOKEN_API = "";
var PROMETHEUS_HOSTNAME = "http://prometheus.example.com:9090"
var PROMETHEUS_BASIC_USERNAME = "";
var PROMETHEUS_BASIC_PASSWORD = "";

function getValuePrometheus(query) {
  var url = PROMETHEUS_HOSTNAME + '/api/v1/query?query='+encodeURI(query);
  var response = UrlFetchApp.fetch(url, { headers: {"Authorization" : "Basic " + Utilities.base64Encode(PROMETHEUS_BASIC_USERNAME + ':' + PROMETHEUS_BASIC_PASSWORD)} });
  Logger.log(JSON.parse(response).data.result[0].value[1]);
  return JSON.parse(response).data.result[0].value[1];
}

function sendGeckoboard(board_id, value) {
  var url = 'https://api.geckoboard.com/datasets/' + board_id + '/data';
  var body = JSON.stringify({data:[
      {
        "timestamp": Utilities.formatDate(new Date(), "GMT", "yyyy-MM-dd'T'HH:mm:ss'Z'"),          //"2016-01-01T12:00:00Z",
        "amount": parseInt(value)
      },
  ]});
  var response = UrlFetchApp.fetch(url, { payload: body, 'method': "POST", headers: {'Content-Type': 'application/json', "Authorization" : "Basic " + Utilities.base64Encode(GECKOBOARD_TOKEN_API + ':')} });
  Logger.log(response);
}
    
function main() {
  # exports redis counter
  var metric_1 = getValuePrometheus('sum(redis_number_page_view_per_website{addr="my-redis:6379"})');
  sendGeckoboard("METRIC_NAME", metric_1);

  # exports nginx response time
  var metric_2 = getValuePrometheus('sum(rate(nginx_http_request_duration_seconds_sum{}[1m])) / sum(rate(nginx_http_request_duration_seconds_count{}[1m])) * 1000');
  sendGeckoboard("METRIC_NAME", metric_2);
}

/*
# creates new dataset into Geckoboard:

#!/bin/bash

curl https://api.geckoboard.com/datasets/METRIC_NAME \
  -X PUT \
  -u 'GECKOBOARD_TOKEN_API:' \
  -H 'Content-Type: application/json' \
  -d '{
  "fields": {
    "amount": {
      "type": "number",
      "name": "Amount",
      "optional": true
    },
    "timestamp": {
      "type": "datetime",
      "name": "Date"
    }
  },
  "unique_by": ["timestamp"]
}'
*/