AWS S3 Adapter for LowDB

This adapter allows you to create and use a lowDB source located on AWS S3 Storage.

Supports Node.JS >= 4.0.0, Electron and the Browser.

In active development, not Production ready.

Why?

Cause AWS is amazeballs.. and I can't afford a MongoDB server. :P

Installation

npm i --save lowdb-adapter-aws-s3

Usage

// Grab the deps
const lowDB = require('lowdb')
const AwsAdapter = require('lowdb-adapter-aws-s3')

// Init the adapter
const adapter = new AwsAdapter()

// Go hard!
lowDB(adapter)

  // Defaults FTW
  .then(db => db.defaults({ posts: [], user: {} }).write())

  // Push something awesome
  .then(db => db.get('posts').push({ id: 1, title: 'lowdb is awesome'}).write())

  // Profit!
  .then(db => console.log('Victory!'))

Configuration

const adapter = new AwsAdapter('db.json', options)

Constructor Options

The constructor uses the same options as lowDB itself, and can be passed defaultValue, serialize and deserialize.

However, this module introduces a new paramater: aws which contains the options to connect and write to AWS S3.

AWS Options

| Param | Type | Default | Description | | --- | --- | --- | --- | | contentType | String | 'application/json' | The MimeType of the source file. | | bucketName | String | 'lowdb-data' | The name of the S3 bucket to write to. | | acl | String | 'private' | The AWS access control settings for the source file. | | cognitoCredentials | null | Object | The Object containing CognitoIdentityCredentials options (only required when using in the browser or Electron). |

When using server-side AWS credentials should be set via the ENV, and will be picked up by AWS automattically.

AWS_ACCESS_KEY_ID = null
AWS_SECRET_ACCESS_KEY = null

When using in the browser or Electron, you should (probably) be using an AWS CognitoIdentityCredentials object, all you need to do is pass the options to the cognitoCredentials option in the aws options.

The AWS.CognitoIdentityCredentials object will be automatically created for you from the options you pass to the cognitoCredentials paramater. Easy peasy.

Example:

const adapter = new AwsAdapter('db.json', {
  aws: {
    cognitoCredentials: {
      IdentityPoolId: 'us-east-2:1699ebc0-7900-4099-b910-2df94f52a030,
      ...
    },
    ...
  }
})

Tests

npm test

Caveat

Obviously as read/write calls are made on-demand to AWS this is not a fast adapter, MongoDB would be a better choice for such Need for Speed.

Future

• Support bucket/file encryption
• Some kind of in-memory caching to speed up read times