hiboot

Overview ¶

Package hiboot is a web/cli app application framework

Hiboot is a cloud native web and cli application framework written in Go.

Hiboot integrates the popular libraries but make them simpler, easier to use. It borrowed some of the Spring features like dependency injection, aspect oriented programming, and auto configuration. You can integrate any other libraries easily by auto configuration with dependency injection support. hiboot-data is the typical project that implement customized hiboot starters. see https://godoc.org/hidevops.io/hiboot-data

Overview

Web MVC - (Model-View-Controller).
Auto Configuration - pre-create instance with properties configs for dependency injection.
Dependency injection - with struct tag name `inject:""` or Constructor func.

Introduction to Hiboot ¶

One of the most significant feature of Hiboot is Dependency Injection. Hiboot implements JSR-330 standard.

Let's say that we have two implementations of AuthenticationService, below will explain how does Hiboot work.

type AuthenticationService interface {
	Authenticate(credential Credential) error
}

type basicAuthenticationService struct {
}

func newBasicAuthenticationService() AuthenticationService {
	return &basicAuthenticationService{}
}

func (s *basicAuthenticationService) Authenticate(credential Credential) error {
	// business logic ...
	return nil
}

type oauth2AuthenticationService struct {
}

func newOauth2AuthenticationService() AuthenticationService {
	return &oauth2AuthenticationService{}
}

func (s *oauth2AuthenticationService) Authenticate(credential Credential) error {
	// business logic ...
	return nil
}

func init() {
	app.Register(newBasicAuthenticationService, newOauth2AuthenticationService)
}

Field Injection ¶

In Hiboot the injection into fields is triggered by `inject:""` struct tag. when inject tag is present on a field, Hiboot tries to resolve the object to inject by the type of the field. If several implementations of the same service interface are available, you have to disambiguate which implementation you want to be injected. This can be done by naming the field to specific implementation.

type userController struct {
	at.RestController

	BasicAuthenticationService AuthenticationService	`inject:""`
	Oauth2AuthenticationService AuthenticationService	`inject:""`
}

func newUserController() {
	return &userController{}
}

func init() {
	app.Register(newUserController)
}

Constructor Injection ¶

Although Field Injection is pretty convenient, but the Constructor Injection is the first-class citizen, we usually advise people to use constructor injection as it has below advantages,

• It's testable, easy to implement unit test.

• Syntax validation, with syntax validation on most of the IDEs to avoid typo.

• No need to use a dedicated mechanism to ensure required properties are set.

  type userController struct { at.RestController

  basicAuthenticationService AuthenticationService }

  // Hiboot will inject the implementation of AuthenticationService func newUserController(basicAuthenticationService AuthenticationService) { return &userController{ basicAuthenticationService: basicAuthenticationService, } }

  func init() { app.Register(newUserController) }

Features

App
	cli - command line application
	web - web application

Starters
	actuator - health check
	locale - locale starter
	logging - customized logging settings
	jwt - jwt starter
	grpc - grpc application starter

Tags
	inject - inject generic instance into object
	default - inject default value into struct object
	value - inject string value or references / variables into struct string field

Utils
	cmap - concurrent map
	copier - copy between struct
	crypto - aes, base64, md5, and rsa encryption / decryption
	gotest - go test util
	idgen - twitter snowflake id generator
	io - file io util
	mapstruct - convert map to struct
	replacer - replacing stuct field value with references or environment variables
	sort - sort slice elements
	str - string util enhancement util
	validator - struct field validation

Getting started ¶

This section will show you how to create and run a simplest hiboot application. Let’s get started!

Getting started with Hiboot web application ¶

Get the source code

go get -u hidevops.io/hiboot
cd $GOPATH/src/hidevops.io/hiboot/examples/web/helloworld/

Source Code

package main

import (
	"hidevops.io/hiboot/pkg/app/web"
	"hidevops.io/hiboot/pkg/at"
)

// This is a simple hello world example
func main() {
	// the web application entry
	web.NewApplication(new(Controller)).Run()
}

// Controller is the RESTful Controller, derived from at.RestController.
// The context path of this controller is '/' by default
// if you name it HelloController, then the default context path will be /hello
// which the context path of this controller is hello
type Controller struct {
	at.RestController
}

// Get method, the context mapping of this method is '/' by default
// the Method name Get means that the http request method is GET
func (c *Controller) Get() string {
	// response data
	return "Hello world"
}

Output: