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Hapiness

Hapiness

Production ready Hapi boilerplate application.

Credits

Thanks to ravisuhag/jolly for his wonderful boilerplate app which became the base of Hapiness.

Description

'Hapiness' boilerplate application serves as a great starting point for all the Hapi.js developers who were looking for a platform for their production server.

  1. localhost:8000 - Serve web request
  2. localhost:8000/api - Serve rest api request

WEB and RESTAPI both have their independent authentication mechanisms, the web application uses the cookie based authentication and the RESTAPI uses the JWT authentication for access. The deployment and application management is done via 'Gulp' and there are different configurations/tasks for starting the app in the development vs the production environment. This application assumes the availability of 'MongoDB' installation on the localhost where the server will run.

The app contains basic user management with login, logout, password reset, profile view. Forgot password implementation is done using 'nodemailer' (sends an email with reset password link with a unique token that expires in 1 hour).

For production, we have used 'PM2' as the process manager which spawns 4 servers for the application and takes care of the rest of application life cycle management. All the environment variables are managed using 'dotenv' node package for development, the same will need to be configured at the host server in the production environment.

If you are using 'Chrome' for unit testing the application, you can Hapi-ly use the 'node-inspector' chrome plugin pre-configured with this app for debugging purposes.

SSL Support

SSL support has been provided using self signed certificates. Users may replace the certificates placed at config/ssl directory with their proprietary certificates. The SSL support can be suppressed by commenting out the following lines in config/manifest.js :

tls: Config.get('/tlsOptions')

Nodemailer Configuration

User may replace their gmail credentials in the .env file for debugging purpose on local environment. However, for production the credentials should be set as environment variables.

TO-DO

Technology

  • Hapi - Server side framework
  • Handlebar - HTML templating engine
  • Mongoose - Mongo database ORM
  • SASS - CSS preprocessor
  • Gulp - Javascript tasks automation
  • WebPack - Asset pipeline
  • Dotenv - Environment variable emulator
  • Good - Logger mechanism
  • JWT - Authentication mechanism for APIs
  • Config - Configuration Handler
  • PM2 - Production process manager for Node.js apps
  • Nodemailer - Module to send emails

Application Structure

├── app
│   ├── controllers
│   │   ├── api            // Controllers are organised by module names for rest api 
│   │   └── web            // Controllers are organised by module names for web api.
│   ├── helpers            // Helpers contains methods that are access by both api and                                web controllers.
│   ├── models             // All mongoose models are defined here
│   ├── routes             // All app routes are defined here
│   │   ├── mobileApi      // RESTAPI routes for multiple versions V1 & V2.
│   │   │   ├── v1         // Routes for version1
│   │   │   └── v2         // Routes for version2
│   │   └── webApi         // WEB api routes.
│   └── templates          // All server-rendered handlebar templates, partials and                                helpers
├── assets                 // Contains all static resources 
│   ├── fonts              // Fonts used in application
│   ├── images             // Images used in application
│   ├── scripts            // Scripts used in application
│   │   ├── js             // User defined scripts
│   │   └── vendor         // Vendor scripts.
│   └── styles             // All SASS stylesheets
├──config                  // Contains all app configurations
│   ├── assets.js          // Assets configuration file
│   ├── config.js          // Application configuration. 
│   ├── default.json       // Configuration file.
│   ├── manifest.js        // App manifest file listing all plugins and load order.
│   ├── meta.js            // App metadata file.
│   └── ssl                // Contains ssl certificates
├── lib                    // Core application lib/plugins
├── logs                   // Contains app log file 
└── tasks                  // Contains all gulp tasks
├──.gitignore              // standard git ignore file
├──.babelrc                // Babel config
├──.eslintrc               // Define eslint rules.
├──.eslintignore           // Ignores certain files for eslint rules
├──gulpfile.js             // Gulp entry file 
├──server.js               // Contains all app configurations
├──.env                    // dotenv configuration file for environment variable 
└── test
    ├── testcases          // Testcases organised by module names.
    └── test.js            // Test file.

Code

We're using semi-colons and comma-last. No rhyme or reason; and some of the hapi code convention guidelines. All client-side js code is also in commonJS pattern packs using webpack. Check out .eslintrc for additional code conventions used.

.env Configuration

Create .env file on root foler and define following property

DEBUGGER=false        // enable disable debug mode.
NODE_ENV=development  //Node environment development/production
PORT=8000            // Server Port
SERVER_HOST=0.0.0.0  // Hapi Server host
COOKIE_SECRET=MyCookieSecret_ThisShould_be_32_character_long
YAR_COOKIE_SECRET=MyYarCookieSecret_ThisShould_be_32_character_long
JWT_SECRET=MySecretKey_ThisShould_be_32_character_long
GMAIL_ID= Gmail Id from which mails has been send.
GMAIL_PASSWORD= Gmail password
GMAIL_SENDEREMAIL=Sender email to display in email.
GMAIL_SENDERNAME=Sender name to display in email.
MAIL_HOST=smtp.gmail.com // Mail host
MAIL_PORT=465  // Mail Port
DATABASE_URL=mongodb://localhost:27017/hapiness  //Mongo database url
SWAGGER_HOST=localhost:8000  // Host Url for Swagger.

Running the server locally

  • Install node, npm
  • Define env Configuration
  • Run these commands
# Install deps
$ npm install

# Run the node server
$ gulp

The servers should be running at:
localhost:8000

Running the server in Docker Container

#Prerequisite For Docker Configuration

Docker and docker compose must be install on the system.

#Steps to run app in docker container :-

  1. Go to project folder
  2. Create build using cmd :- $ docker-compose build
  3. Up server in background using cmd:- $ docker-compose up -d
  4. Down the server using cmd :- $ docker-compose down

REST API Versioning

Currently Hapiness support 2 versions of rest api for that we need to clone routes of v1 in v2 then define controller for V2 and call it from route V2.

Testing

  • Run these commands
# Test the server
$ npm test

Hapiness Upgrade Guide.

#Create Plugins and Their Exports

To comply with the new structure, update your plugins to use a named export plugin that provides an object containing all the information. At least the register function that takes the server and options object.

#hapi v16

exports.register = (server, options, next) => { … }

exports.register.attributes = {  
    pkg: require('../package.json')
};

#hapi v17

exports.plugin = {  
  register: (server, options) => {
    …
  },
  pkg: require('../package.json')
}

#Directly Return in Route Handlers, No More “reply()” Callback

With hapi v17 you can return values from route handlers directly. The reply interface isn’t available anymore. It was more of a callback with extra functionality that you could use to create, change and hold a response, before sending it.

#hapi v16

server.ext('onPreResponse', (request, reply) => { … })

const handler = (request, reply) => {  
  // return a string
  return reply('ok')

  // return an object and hapi creates JSON out of it
  return reply({ name: 'Future Studio', makeItRock: true })

  // redirect … to 404 … hehehehe :D
  return reply.redirect('/404')

  // return a view
  return reply.view('index', { name: 'Future Studio' })

  // use the "reply" to create a response with chained methods
  return reply(someHTML)
    .type('text/html')
    .header('X-Custom', 'my-value')
    .code(201)
}

#hapi v17

// the new structure applies to lifecycle points and request handlers
// here are some examples on how to use the new response toolkit

server.ext('onPreResponse', (request, h) => { … })

const handler = (request, h) => {  
  // return a string
  return 'ok'

  // return an object and hapi creates JSON out of it
  return { name: 'Future Studio', makeItRock: true }

  // redirect … to 404 
  return h.redirect('/404')

  // return a view
  return h.view('index', { name: 'Future Studio' })

  // use the "h" response toolkit to create a response
  return h
    .response(someHTML)
    .type('text/html')
    .header('X-Custom', 'my-value')
    .code(201)
}

For complete upgrade guide to upgrade hapi16 to hapi 17 Refer below link:-

https://futurestud.io/tutorials/hapi-v17-upgrade-guide-your-move-to-async-await

Contributors

Systango-Technologies