Mysterio

A dead simple module to take a configuration file by environment, retrieve secrets from AWS secret manager and merge them.

Install

> npm install --save mysterio

Usage

1. Go to AWS secret manager and create secret with the following naming convention:

<app name>/<environment>

Ex:

log-collector/prod

2. Create a config folder that will contain the app configuration. Should be file per environment:

config/local.json

{
  "port": 3000,
  "db": "secret!"
}

3. Create a new instance and merged the configuration

const { name } = require('package.json')
const { Mysterio } = require('mysterio')

async function init () {
  const mysterio = new Mysterio()
  try {
    const secrets = await mysterio.getMerged()
  } catch (e) {
    console.log('Error getting secrets ', e)
  }
}

4. You can also use Mysterio helper to just get secrets

const { name } = require('package.json')
const { getSecretsClient } = require('mysterio')

async function init () {
  const getSecrets = getSecretsClient({})
  try {
    const secrets = await getSecrets('my-secret-name')
  } catch (e) {
    console.log('Error getting secrets ', e)
  }
}

API

new Mysterio([, options])

• awsParams (Object) - AWS SecretManager constructor params. Default: { region: 'us-east-1' }
• configDirPath (String) - config folder path. Default: <current working dir>/config
• localRCPath (String) - local rc file path. Default: <current working dir>/.mysteriorc
• env (String) - environment. Default: process.env.NODE_ENV || 'local'
• packageName (String) - name of your app
• secretName (String) - name of your secret. Default: ${packageName}/${env}

Mysterio.getDefaultConfigs()

Get default configuration from configDirPath by env. If you have default.json file it will marge it with <env>.json file.

Mysterio.getSecrets()

Get secrets from AWS SecretManager. Secret id will be secretName.

Mysterio.getLocalRC()

Get configuration from localRCPath. This file will load last. It is usually used as a helper while developing services with this module. You can add it to your .gitignore file to make sure it will stay only on yor computer.

Mysterio.getMerged([, options])

Get a merged secret object with your AWS SecretManager secret and your local config files.

• isAddEnvProp - add an env prop to the merged secrets in is<Env> = true pattern. Default: false
• isGetLocal - pull secrets from AWS SecretManager on local env as well. Default: true
• isGetTest - pull secrets from AWS SecretManager on test env as well. Default: false

getSecretsClient([, options])

Get secrets from AWS SecretManager by secret name. This method will return an async function that accepts a secret name and returns the secrets object.

• awsParams (Object) - AWS SecretManager constructor params. Default: { region: 'us-east-1' }