Waterline-dynamodb NPM

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waterline-dynamodb

Provides easy access to dynamodb from Sails.js & Waterline.

This module is a Waterline/Sails adapter, an early implementation of a rapidly-developing, tool-agnostic data standard. Its goal is to provide a set of declarative interfaces, conventions, and best-practices for integrating with all sorts of data sources. Not just databases-- external APIs, proprietary web services, or even hardware.

Strict adherence to an adapter specification enables the (re)use of built-in generic test suites, standardized documentation, reasonable expectations around the API for your users, and overall, a more pleasant development experience for everyone.

Installation

To install this adapter, run:

$ npm install waterline-dynamodb --save

Set up

Connection config

// config/connection.js

// ....
 dynamodb: {
    adapter: 'waterline-dynamodb',
    accessKeyId: 'yout accessKeyId',
    secretAccessKey: 'your secretAccessKey',
    region: 'your region',
    endpoint: 'your endpoint',
    readCapacity: 5,
    writeCapacity: 5
  }
// ...

Model config

Add some validation types for dynamodb:

// config/models.js
// ....
types: {
        rangeKey: function () {
            return true;
        },
        hashKey: function () {
            return true;
        },
        globalIndex: function () {
            return true;
        },
        localIndex: function () {
            return true;
        },
        indexName: function () {
            return true;
        }
    }
// ...

Usage

This adapter exposes the following methods:

`find()`

`create()`

`update()`

`destroy()`

Example

Define a model

//api/models/Tiger.js

module.exports = {

    attributes: {
        name: {type: 'string', unique: true, primaryKey: true},
        age: {type: 'integer', rangeKey: true, defaultsTo: 1},
        extraInfo: {type: 'json'},
        nickname: {type: 'string', globalIndex: true, indexName: 'NickBirth', hashKey: true},
        birthday: {type: 'date', globalIndex: true, indexName: 'NickBirth', rangeKey: true}
    }
};

Create/Update a model

// In this example , for convenience, we try to create a tiger named Simba in sails console,
 Tiger.create({name:'Simba', nickname:'Little King', birthday:new Date('1996-02-3'), extraInfo: {hobby:'eating'}}).exec(console.log)