Synchronise CloudWatch dashboards

updateDashboards.js

import util from 'util';
import AWS from 'aws-sdk';

// command options
const OPT_NAME = 'my-first-dashboard'; // name of dashboard to sync.
const OPT_TEMPLATE = 'master'; // environment to sync-from.

// dashboard/environment options
const asName = (name, environment) => `${name}-${environment}`; // template for full dashboard name.
const environments = ['master', 'staging', 'production']; // environments to duplicate across


const cloudwatch = new AWS.CloudWatch();

const getDashboardJson = (name, environment) =>
  cloudwatch
    .getDashboard({ DashboardName: asName(name, environment) })
    .promise()
    .then(({ DashboardBody }) => DashboardBody);
const putDashboardJson = (name, DashboardBody, environment) =>
  cloudwatch
    .putDashboard({ DashboardName: asName(name, environment), DashboardBody })
    .promise()
    .then(() => console.log(`Created ${asName(name, environment)} successfully.`));

const switchEnvironment = (dashBoard, fromEnvironment, toEnvironment) => {
  replacements.push({ find: fromEnvironment, replace: toEnvironment });
  let switched = dashBoard;
  replacements.forEach(({ find, replace }) => {
    switched = switched.replace(new RegExp(find, 'g'), replace);
  });
  return switched;
};

const updateDashboard = (name, fromEnvironment, toEnvironment) => {
  console.log(`Updating dashboard ${asName(name, toEnvironment)} from template ${fromEnvironment}`);
  getDashboardJson(name, fromEnvironment)
    .then((dashBoard) => {
      const updated = switchEnvironment(dashBoard, fromEnvironment, toEnvironment);
      return putDashboardJson(name, updated, toEnvironment);
    })
    .catch(error => console.error(`Failed to update as ${util.inspect(error)}`));
};

const updateDashboards = (name, master) =>
  environments
    .filter(e => e !== master)
    .map(e => updateDashboard(name, master, e));

updateDashboards(OPT_NAME, OPT_TEMPLATE);