Wire: Compile-time Dependency injection for Go

Wire: Automated Initialization in Go

Wire is a code generation tool that automates connecting components using dependency injection. Dependencies between components are represented in Wire as function parameters, encouraging explicit initialization instead of global variables. Because Wire operates without runtime state or reflection, code written to be used with Wire is useful even for hand-written initialization.

For an overview, see the introductory blog post.

Installing

Install Wire by running:

go install github.com/google/wire/cmd/wire@latest

and ensuring that $GOPATH/bin is added to your $PATH.

Documentation

• Tutorial
• User Guide
• Best Practices
• FAQ

Project status

As of version v0.3.0, Wire is beta and is considered feature complete. It works well for the tasks it was designed to perform, and we prefer to keep it as simple as possible.

We'll not be accepting new features at this time, but will gladly accept bug reports and fixes.

Community

For questions, please use GitHub Discussions.

This project is covered by the Go Code of Conduct.

Download Details:

Author: Google
Source Code: https://github.com/google/wire 
License: Apache-2.0 license

#go #golang #dependency #injection 

10 Best Golang Libraries for Working with Dependency injection

In today's post we will learn about 10 Best Golang Libraries for Working with Dependency injection.

What is Dependency injection?

Dependency injection is basically providing the objects that an object needs (its dependencies) instead of having it construct them itself.

Table of contents:

• Alice - Additive dependency injection container for Golang.
• Di - A dependency injection container for go programming language.
• Dig - A reflection based dependency injection toolkit for Go.
• Dingo - A dependency injection toolkit for Go, based on Guice.
• Do - A dependency injection framework based on Generics.
• Fx - A dependency injection based application framework for Go (built on top of dig).
• Gocontainer - Simple Dependency Injection Container.
• Goioc/di - Spring-inspired Dependency Injection Container.
• GoLobby/Container - GoLobby Container is a lightweight yet powerful IoC dependency injection container for the Go programming language.
• Google/wire - Automated Initialization in Go.

1 - Alice: Additive dependency injection container for Golang.

Alice is an additive dependency injection container for Golang.

Philosophy

Design philosophy behind Alice:

• The application components should not be aware of the existence of a DI container.
• Use static Go files to define the object graph.
• Developer has the freedom to choose the way to initialize objects.

Install

$ go get github.com/magic003/alice

Usage

Alice is inspired by the design of Spring JavaConfig.

It usually takes 3 steps to use Alice.

Define modules

The instances to be managed by the container are defined in modules. There could be multiple modules organized by the functionality of the instances. Modules are usually placed in a separate package.

A typical module looks like this:

type ExampleModule struct {
    alice.BaseModule
    Foo Foo `alice:""`
    Bar Bar `alice:"Bar"`
    Baz Baz
}

func (m *ExampleModule) InstanceX() X {
    return X{m.Foo}
}

func (m *ExampleModule) InstanceY() Y {
    return Y{m.Baz}
}

A module struct must embed the alice.BaseModule struct. It allows 3 types of fields:

• Field tagged by alice:"". It will be associated with the same or assignable type of instance defined in other modules.
• Field tagged by alice:"Bar". It will be associated with the instance named Bar defined in other modules.
• Field without alice tag. It will not be associated with any instance defined in other modules. It is expected to be provided when initializing the module. It is not managed by the container and could not be retrieved.

It is also common that no field is defined in a module struct.

Any public method of the module struct defines one instance to be intialized and maintained by the container. It is required to use a pointer receiver. The method name will be used as the instance name. The return type will be used as the instance type. Inside the method, it could use any field of the module struct to create new instances.

View on Github

2 - Di: A dependency injection container for go programming language.

Dependency injection for Go programming language.

Dependency injection is one form of the broader technique of inversion of control. It is used to increase modularity of the program and make it extensible.

This library helps you to organize responsibilities in your codebase and make it easy to combine low-level implementation into high-level behavior without boilerplate.

Install

go get github.com/goava/di

What it looks like

package main

import (
	"context"
	"fmt"
	"log"
	"net/http"
	"os"
	"os/signal"
	"syscall"

	"github.com/goava/di"
)

func main() {
	di.SetTracer(&di.StdTracer{})
	// create container
	c, err := di.New(
		di.Provide(NewContext),  // provide application context
		di.Provide(NewServer),   // provide http server
		di.Provide(NewServeMux), // provide http serve mux
		// controllers as []Controller group
		di.Provide(NewOrderController, di.As(new(Controller))),
		di.Provide(NewUserController, di.As(new(Controller))),
	)
	// handle container errors
	if err != nil {
		log.Fatal(err)
	}
	// invoke function
	if err := c.Invoke(StartServer); err != nil {
		log.Fatal(err)
	}
}

Full code available here.

Questions

If you have any questions, feel free to create an issue.

View on Github

3 - Dig: A reflection based dependency injection toolkit for Go.

Good for:

• Powering an application framework, e.g. Fx.
• Resolving the object graph during process startup.

Bad for:

• Using in place of an application framework, e.g. Fx.
• Resolving dependencies after the process has already started.
• Exposing to user-land code as a Service Locator.

Installation

We recommend consuming SemVer major version 1 using your dependency manager of choice.

$ glide get 'go.uber.org/dig#^1'
$ dep ensure -add "go.uber.org/dig@v1"
$ go get 'go.uber.org/dig@v1'

Stability

This library is v1 and follows SemVer strictly.

No breaking changes will be made to exported APIs before v2.0.0.

View on Github

4 - Dingo: A dependency injection toolkit for Go, based on Guice.

Dingo works very similar to Guice

Basically one binds implementations/factories to interfaces, which are then resolved by Dingo.

Given that Dingo's idea is based on Guice we use similar examples in this documentation:

The following example shows a BillingService with two injected dependencies. Please note that Go's nature does not allow constructors, and does not allow decorations/annotations beside struct-tags, thus, we only use struct tags (and later arguments for providers).

Also, Go does not have a way to reference types (like Java's Something.class) we use either pointers or nil and cast it to a pointer to the interface we want to specify: (*Something)(nil). Dingo then knows how to dereference it properly and derive the correct type Something. This is not necessary for structs, where we can just use the null value via Something{}.

See the example folder for a complete example.

package example

type BillingService struct {
	processor CreditCardProcessor
	transactionLog TransactionLog
}

func (billingservice *BillingService) Inject(processor CreditCardProcessor, transactionLog TransactionLog) {
	billingservice.processor = processor
	billingservice.transactionLog = transactionLog
}

func (billingservice *BillingService) ChargeOrder(order PizzaOrder, creditCard CreditCard) Receipt {
	// ...
}

We want the BillingService to get certain dependencies, and configure this in a BillingModule which implements dingo.Module:

package example

type BillingModule struct {}

func (module *BillingModule) Configure(injector *dingo.Injector) {
	// This tells Dingo that whenever it sees a dependency on a TransactionLog, 
	// it should satisfy the dependency using a DatabaseTransactionLog. 
	injector.Bind(new(TransactionLog)).To(DatabaseTransactionLog{})

	// Similarly, this binding tells Dingo that when CreditCardProcessor is used in
	// a dependency, that should be satisfied with a PaypalCreditCardProcessor. 
	injector.Bind(new(CreditCardProcessor)).To(PaypalCreditCardProcessor{})
}

Requesting injection

Every instance that is created through the container can use injection.

Dingo supports two ways of requesting dependencies that should be injected:

• usage of struct tags to allow structs to request injection into fields. This should be used for public fields.
• implement a public Inject(...) method to request injections of private fields. Dingo calls this method automatically and passes the requested injections.

For every requested injection (unless an exception applies) Dingo does the following:

• Is there a binding? If so: delegate to the binding
  • Is the binding in a certain scope (Singleton)? If so, delegate to scope (might result in a new loop)
  • Binding is bound to an instance: inject instance
  • Binding is bound to a provider: call provider
  • Binding is bound to a type: request injection of this type (might return in a new loop to resolve the binding)
• No binding? Try to create (only possible for concrete types, not interfaces or functions)

View on Github

5 - Do: A dependency injection framework based on Generics.

A dependency injection toolkit based on Go 1.18+ Generics.

This library implements the Dependency Injection design pattern. It may replace the uber/dig fantastic package in simple Go projects. samber/do uses Go 1.18+ generics instead of reflection and therefore is typesafe.

Why this name?

I love short name for such utility library. This name is the sum of DI and Go and no Go package currently uses this name.

💡 Features

• Service registration
• Service invocation
• Service health check
• Service shutdown
• Service lifecycle hooks
• Named or anonymous services
• Eagerly or lazily loaded services
• Dependency graph resolution
• Default injector
• Injector cloning
• Service override

🚀 Services are loaded in invocation order.

🕵️ Service health can be checked individually or globally. Services implementing do.Healthcheckable interface will be called via do.HealthCheck[type]() or injector.HealthCheck().

🛑 Services can be shutdowned properly, in back-initialization order. Services implementing do.Shutdownable interface will be called via do.Shutdown[type]() or injector.Shutdown().

🚀 Install

go get github.com/samber/do@v1

This library is v1 and follows SemVer strictly.

No breaking changes will be made to exported APIs before v2.0.0.

💡 Quick start

You can import do using:

import (
    "github.com/samber/do"
)

Then instanciate services:

func main() {
    injector := do.New()

    // provides CarService
    do.Provide(injector, NewCarService)

    // provides EngineService
    do.Provide(injector, NewEngineService)

    car := do.MustInvoke[*CarService](injector)
    car.Start()
    // prints "car starting"

    do.HealthCheck[EngineService](injector)
    // returns "engine broken"

    // injector.ShutdownOnSIGTERM()    // will block until receiving sigterm signal
    injector.Shutdown()
    // prints "car stopped"
}

Services:

type EngineService interface{}

func NewEngineService(i *do.Injector) (EngineService, error) {
    return &engineServiceImplem{}, nil
}

type engineServiceImplem struct {}

// [Optional] Implements do.Healthcheckable.
func (c *engineServiceImplem) HealthCheck() error {
	return fmt.Errorf("engine broken")
}

func NewCarService(i *do.Injector) (*CarService, error) {
    engine := do.MustInvoke[EngineService](i)
    car := CarService{Engine: engine}
    return &car, nil
}

type CarService struct {
	Engine EngineService
}

func (c *CarService) Start() {
	println("car starting")
}

// [Optional] Implements do.Shutdownable.
func (c *CarService) Shutdown() error {
	println("car stopped")
	return nil
}

View on Github

6 - Fx: A dependency injection based application framework for Go (built on top of dig).

An application framework for Go that:

• Makes dependency injection easy.
• Eliminates the need for global state and func init().

Installation

We recommend locking to SemVer range ^1 using go mod:

go get go.uber.org/fx@v1

Stability

This library is v1 and follows SemVer strictly.

No breaking changes will be made to exported APIs before v2.0.0.

This project follows the Go Release Policy. Each major version of Go is supported until there are two newer major releases.

View on Github

7 - Gocontainer: Simple Dependency Injection Container.

gocontainer - Dependency Injection Container

🚏 HOW TO USE

First file main.go simply gets the repository from the container and prints it we use MustInvoke method to simply present the way where we keep type safety

package main

import (
    "github.com/vardius/gocontainer/example/repository"
    "github.com/vardius/gocontainer"
)

func main() {
    gocontainer.MustInvoke("repository.mysql", func(r Repository) {
        fmt.Println(r)
    })
}

Our database implementation uses init() function to register db service

package database

import (
    "fmt"
    "database/sql"

    "github.com/vardius/gocontainer"
)

func NewDatabase() *sql.DB {
    db, _ := sql.Open("mysql", "dsn")

    return db
}

func init() {
    db := gocontainer.MustGet("db")

    gocontainer.Register("db", NewDatabase())
}

Our repository accesses earlier on registered db service and following the same patter uses init() function to register repository service within container

package repository

import (
    "fmt"
    "database/sql"

    "github.com/vardius/gocontainer"
    _ "github.com/vardius/gocontainer/example/database"
)

type Repository interface {}

func NewRepository(db *sql.DB) Repository {
    return &mysqlRepository{db}
}

type mysqlRepository struct {
    db *sql.DB
}

func init() {
    db := gocontainer.MustGet("db")

    gocontainer.Register("repository.mysql", NewRepository(db.(*sql.DB)))
}

You can disable global container instance by setting gocontainer.GlobalContainer to nil. This package allows you to create many containers.

package main

import (
    "github.com/vardius/gocontainer/example/repository"
    "github.com/vardius/gocontainer"
)

func main() {
    // disable global container instance
    gocontainer.GlobalContainer = nil

    mycontainer := gocontainer.New()
    mycontainer.Register("test", 1)
}

Please check GoDoc for more methods and examples.

View on Github

8 - Goioc/di: Spring-inspired Dependency Injection Container.

Why DI in Go? Why IoC at all?

I've been using Dependency Injection in Java for nearly 10 years via Spring Framework. I'm not saying that one can't live without it, but it's proven to be very useful for large enterprise-level applications. You may argue that Go follows a completely different ideology, values different principles and paradigms than Java, and DI is not needed in this better world. And I can even partly agree with that. And yet I decided to create this light-weight Spring-like library for Go. You are free to not use it, after all 🙂

Is it the only DI library for Go?

No, of course not. There's a bunch of libraries around which serve a similar purpose (I even took inspiration from some of them). The problem is that I was missing something in all of these libraries... Therefore I decided to create Yet Another IoC Container that would rule them all. You are more than welcome to use any other library, for example this nice project. And still, I'd recommend stopping by here 😉

So, how does it work?

It's better to show than to describe. Take a look at this toy-example (error-handling is omitted to minimize code snippets):

services/weather_service.go

package services

import (
	"io/ioutil"
	"net/http"
)

type WeatherService struct {
}

func (ws *WeatherService) Weather(city string) (*string, error) {
	response, err := http.Get("https://wttr.in/" + city)
	if err != nil {
		return nil, err
	}
	all, err := ioutil.ReadAll(response.Body)
	if err != nil {
		return nil, err
	}
	weather := string(all)
	return &weather, nil
}

controllers/weather_controller.go

package controllers

import (
	"di-demo/services"
	"github.com/goioc/di"
	"net/http"
)

type WeatherController struct {
	// note that injection works even with unexported fields
	weatherService *services.WeatherService `di.inject:"weatherService"`
}

func (wc *WeatherController) Weather(w http.ResponseWriter, r *http.Request) {
	weather, _ := wc.weatherService.Weather(r.URL.Query().Get("city"))
	_, _ = w.Write([]byte(*weather))
}

View on Github

9 - GoLobby/Container: GoLobby Container is a lightweight yet powerful IoC dependency injection container for the Go programming language.

GoLobby Container is a lightweight yet powerful IoC (dependency injection) container for Go projects. It's built neat, easy-to-use, and performance-in-mind to be your ultimate requirement.

Features:

• Singleton and Transient bindings
• Named dependencies (bindings)
• Resolve by functions, variables, and structs
• Must helpers that convert errors to panics
• Optional lazy loading of bindings
• Global instance for small applications

Documentation

Required Go Versions

It requires Go v1.11 or newer versions.

Installation

To install this package, run the following command in your project directory.

go get github.com/golobby/container/v3

Introduction

GoLobby Container is used to bind abstractions to their implementations. Binding is the process of introducing appropriate concretes (implementations) of abstractions to an IoC container. In this process, you also determine the resolving type, singleton or transient. In singleton bindings, the container provides an instance once and returns it for all the requests. In transient bindings, the container always returns a brand-new instance for each request. After the binding process, you can ask the IoC container to make the appropriate implementation of the abstraction that your code needs. Then your code will depend on abstractions, not implementations!

Quick Start

The following example demonstrates a simple binding and resolving.

// Bind Config interface to JsonConfig struct
err := container.Singleton(func() Config {
    return &JsonConfig{...}
})

var c Config
err := container.Resolve(&c)
// `c` will be the instance of JsonConfig

Typed Binding

Singleton

The following snippet expresses singleton binding.

err := container.Singleton(func() Abstraction {
  return Implementation
})

// If you might return an error...

err := container.Singleton(func() (Abstraction, error) {
  return Implementation, nil
})

It takes a resolver (function) whose return type is the abstraction and the function body returns the concrete (implementation).

View on Github

10 - Google/wire: Automated Initialization in Go.

Wire is a code generation tool that automates connecting components using dependency injection. Dependencies between components are represented in Wire as function parameters, encouraging explicit initialization instead of global variables. Because Wire operates without runtime state or reflection, code written to be used with Wire is useful even for hand-written initialization.

Installing

Install Wire by running:

go install github.com/google/wire/cmd/wire@latest

and ensuring that $GOPATH/bin is added to your $PATH.

Documentation

• Tutorial
• User Guide
• Best Practices
• FAQ

Project status

As of version v0.3.0, Wire is beta and is considered feature complete. It works well for the tasks it was designed to perform, and we prefer to keep it as simple as possible.

We'll not be accepting new features at this time, but will gladly accept bug reports and fixes.

View on Github

Thank you for following this article.

Related videos:

Dependency Injection Best Practices with the Go Context package

#go #golang #dependency #injection 

Light-my-request: Fake HTTP injection Library

Light my Request 

Injects a fake HTTP request/response into a node HTTP server for simulating server logic, writing tests, or debugging. Does not use a socket connection so can be run against an inactive server (server not in listen mode).

Example

const http = require('http')
const inject = require('light-my-request')

const dispatch = function (req, res) {
  const reply = 'Hello World'
  res.writeHead(200, { 'Content-Type': 'text/plain', 'Content-Length': reply.length })
  res.end(reply)
}

const server = http.createServer(dispatch)

inject(dispatch, { method: 'get', url: '/' }, (err, res) => {
  console.log(res.payload)
})

Note how server.listen is never called.

Async await and promises are supported as well!

// promises
inject(dispatch, { method: 'get', url: '/' })
  .then(res => console.log(res.payload))
  .catch(console.log)

// async-await
try {
  const res = await inject(dispatch, { method: 'get', url: '/' })
  console.log(res.payload)
} catch (err) {
  console.log(err)
}

You can also use chaining methods if you do not pass the callback function. Check here for details.

// chaining methods
inject(dispatch)
  .get('/')                   // set the request method to GET, and request URL to '/'
  .headers({ foo: 'bar' })    // set the request headers
  .query({ foo: 'bar' })      // set the query parameters
  .end((err, res) => {
    console.log(res.payload)
  })

inject(dispatch)
  .post('/')                  // set the request method to POST, and request URL to '/'
  .payload('request payload') // set the request payload
  .body('request body')       // alias for payload
  .end((err, res) => {
    console.log(res.payload)
  })

// async-await is also supported
try {
  const chain = inject(dispatch).get('/')
  const res = await chain.end()
  console.log(res.payload)
} catch (err) {
  console.log(err)
}

File uploads (multipart/form-data) or form submit (x-www-form-urlencoded) can be achieved by using form-auto-content package as shown below:

const formAutoContent = require('form-auto-content')
const fs = require('fs')

try {
  const form = formAutoContent({
    myField: 'hello',
    myFile: fs.createReadStream(`./path/to/file`)
  })

  const res = await inject(dispatch, {
    method: 'post',
    url: '/upload',
    ...form
  })
  console.log(res.payload)
} catch (err) {
  console.log(err)
}

This module ships with a handwritten TypeScript declaration file for TS support. The declaration exports a single namespace LightMyRequest. You can import it one of two ways:

import * as LightMyRequest from 'light-my-request'

const dispatch: LightMyRequest.DispatchFunc = function (req, res) {
  const reply = 'Hello World'
  res.writeHead(200, { 'Content-Type': 'text/plain', 'Content-Length': reply.length })
  res.end(reply)
}

LightMyRequest.inject(dispatch, { method: 'get', url: '/' }, (err, res) => {
  console.log(res.payload)
})

// or
import { inject, DistpatchFunc } from 'light-my-request'

const dispatch: DispatchFunc = function (req, res) {
  const reply = 'Hello World'
  res.writeHead(200, { 'Content-Type': 'text/plain', 'Content-Length': reply.length })
  res.end(reply)
}

inject(dispatch, { method: 'get', url: '/' }, (err, res) => {
  console.log(res.payload)
})

The declaration file exports types for the following parts of the API:

• inject - standard light-my-request inject method
• DispatchFunc - the fake HTTP dispatch function
• InjectPayload - a union type for valid payload types
• isInjection - standard light-my-request isInjection method
• InjectOptions - options object for inject method
• Request - custom light-my-request request object interface. Extends Node.js stream.Readable type by default. This behavior can be changed by setting the Request option in the inject method's options
• Response - custom light-my-request response object interface. Extends Node.js http.ServerResponse type

API

inject(dispatchFunc[, options, callback])

Injects a fake request into an HTTP server.

• dispatchFunc - listener function. The same as you would pass to Http.createServer when making a node HTTP server. Has the signature function (req, res) where:
  • req - a simulated request object. Inherits from Stream.Readable by default. Optionally inherits from another class, set in options.Request
  • res - a simulated response object. Inherits from node's Http.ServerResponse.
• options - request options object where:
  • url | path - a string specifying the request URL.
  • method - a string specifying the HTTP request method, defaulting to 'GET'.
  • authority - a string specifying the HTTP HOST header value to be used if no header is provided, and the url does not include an authority component. Defaults to 'localhost'.
  • headers - an optional object containing request headers.
  • cookies - an optional object containing key-value pairs that will be encoded and added to cookie header. If the header is already set, the data will be appended.
  • remoteAddress - an optional string specifying the client remote address. Defaults to '127.0.0.1'.
  • payload - an optional request payload. Can be a string, Buffer, Stream or object. If the payload is string, Buffer or Stream is used as is as the request payload. Oherwise it is serialized with JSON.stringify forcing the request to have the Content-type equal to application/json
  • query - an optional object or string containing query parameters.
  • body - alias for payload.
  • simulate - an object containing flags to simulate various conditions:
    • end - indicates whether the request will fire an end event. Defaults to undefined, meaning an end event will fire.
    • split - indicates whether the request payload will be split into chunks. Defaults to undefined, meaning payload will not be chunked.
    • error - whether the request will emit an error event. Defaults to undefined, meaning no error event will be emitted. If set to true, the emitted error will have a message of 'Simulated'.
    • close - whether the request will emit a close event. Defaults to undefined, meaning no close event will be emitted.
  • validate - Optional flag to validate this options object. Defaults to true.
  • server - Optional http server. It is used for binding the dispatchFunc.
  • autoStart - Automatically start the request as soon as the method is called. It is only valid when not passing a callback. Defaults to true.
  • signal - An AbortSignal that may be used to abort an ongoing request. Requires Node v16+.
  • Request - Optional type from which the request object should inherit instead of stream.Readable
• callback - the callback function using the signature function (err, res) where:
  • err - error object
  • res - a response object where:
    • raw - an object containing the raw request and response objects where:
      • req - the simulated request object.
      • res - the simulated response object.
    • headers - an object containing the response headers.
    • statusCode - the HTTP status code.
    • statusMessage - the HTTP status message.
    • payload - the payload as a UTF-8 encoded string.
    • body - alias for payload.
    • rawPayload - the raw payload as a Buffer.
    • trailers - an object containing the response trailers.
    • json - a function that parses the application/json response payload and returns an object. Throws if the content type does not contain application/json.
    • cookies - a getter that parses the set-cookie response header and returns an array with all the cookies and their metadata.

Notes:

• You can also pass a string in place of the options object as a shorthand for {url: string, method: 'GET'}.
• Beware when using the Request option. That might make light-my-request slower. Sample benchmark result run on an i5-8600K CPU with Request set to http.IncomingMessage:

Request x 155,018 ops/sec ±0.47% (94 runs sampled)
Custom Request x 30,373 ops/sec ±0.64% (90 runs sampled)
Request With Cookies x 125,696 ops/sec ±0.29% (96 runs sampled)
Request With Cookies n payload x 114,391 ops/sec ±0.33% (97 runs sampled)
ParseUrl x 255,790 ops/sec ±0.23% (99 runs sampled)
ParseUrl and query x 194,479 ops/sec ±0.16% (99 runs sampled)

inject.isInjection(obj)

Checks if given object obj is a light-my-request Request object.

Method chaining

There are following methods you can used as chaining:

• delete, get, head, options, patch, post, put, trace. They will set the HTTP request method and the request URL.
• body, headers, payload, query, cookies. They can be used to set the request options object.

And finally you need to call end. It has the signature function (callback). If you invoke end without a callback function, the method will return a promise, thus you can:

const chain = inject(dispatch).get('/')

try {
  const res = await chain.end()
  console.log(res.payload)
} catch (err) {
  // handle error
}

// or
chain.end()
  .then(res => {
    console.log(res.payload)
  })
  .catch(err => {
    // handle error
  })

By the way, you can also use promises without calling end!

inject(dispatch)
  .get('/')
  .then(res => {
    console.log(res.payload)
  })
  .catch(err => {
    // handle error
  })

Note: The application would not respond multiple times. If you try to invoking any method after the application has responded, the application would throw an error.

Acknowledgements

This project has been forked from hapi/shot because we wanted to support Node ≥ v4 and not only Node ≥ v8. All the credits before the commit 00a2a82 goes to the hapi/shot project contributors. Since the commit db8bced the project will be maintained by the Fastify team.

Download Details:

Author: Fastify
Source Code: https://github.com/fastify/light-my-request 
License: View license

#javascript #node #http #injection 

SQLmap: Automatic SQL Injection and Database Takeover Tool

sqlmap

sqlmap is an open source penetration testing tool that automates the process of detecting and exploiting SQL injection flaws and taking over of database servers. It comes with a powerful detection engine, many niche features for the ultimate penetration tester, and a broad range of switches including database fingerprinting, over data fetching from the database, accessing the underlying file system, and executing commands on the operating system via out-of-band connections.

Screenshots

You can visit the collection of screenshots demonstrating some of the features on the wiki.

Installation

You can download the latest tarball by clicking here or latest zipball by clicking here.

Preferably, you can download sqlmap by cloning the Git repository:

git clone --depth 1 https://github.com/sqlmapproject/sqlmap.git sqlmap-dev

sqlmap works out of the box with Python version 2.6, 2.7 and 3.x on any platform.

Usage

To get a list of basic options and switches use:

python sqlmap.py -h

To get a list of all options and switches use:

python sqlmap.py -hh

You can find a sample run here. To get an overview of sqlmap capabilities, a list of supported features, and a description of all options and switches, along with examples, you are advised to consult the user's manual.

Links

• Homepage: https://sqlmap.org
• Download: .tar.gz or .zip
• Commits RSS feed: https://github.com/sqlmapproject/sqlmap/commits/master.atom
• Issue tracker: https://github.com/sqlmapproject/sqlmap/issues
• User's manual: https://github.com/sqlmapproject/sqlmap/wiki
• Frequently Asked Questions (FAQ): https://github.com/sqlmapproject/sqlmap/wiki/FAQ
• Twitter: @sqlmap
• Demos: https://www.youtube.com/user/inquisb/videos
• Screenshots: https://github.com/sqlmapproject/sqlmap/wiki/Screenshots

Translations

• Bulgarian
• Chinese
• Croatian
• French
• German
• Greek
• Indonesian
• Italian
• Japanese
• Korean
• Persian
• Polish
• Portuguese
• Russian
• Serbian
• Spanish
• Turkish
• Ukrainian
• Vietnamese

Author: sqlmapproject
Source Code: https://github.com/sqlmapproject/sqlmap
License: View license

#python #sql #injection 

How to Use Object Identifiers in Swift and Xcode

In this video we will learn about object identifiers in swift and Xcode. Object identifiers can be used to form the foundation of dependency injection with resolve and register patterns. We will do some examples in a playground using the latest version of Xcode.

Reference: https://developer.apple.com/documentation/swift/objectidentifier

💻 Source Code: https://patreon.com/iOSAcademy

#swift  #Dependency #injection  #ios #xcode 

Awesome PHP: Libraries That Implement The Dependency Injection Design

Dependency Injection

Libraries that implement the dependency injection design pattern.

• Aura.Di - A serializable dependency injection container with constructor and setter injection, interface and trait awareness, configuration inheritance, and much more.
• Acclimate - A common interface to dependency injection containers and service locators.
• Auryn - A recursive dependency injector.
• Container - Another flexible dependency injection container.
• Disco - A PSR-11 compatible, annotation-based dependency injection container.
• PHP-DI - A dependency injection container that supports autowiring.
• Pimple - A tiny dependency injection container.
• Symfony DI - A dependency injection container component.

Author: ziadoz
Source Code: https://github.com/ziadoz/awesome-php
License: WTFPL License

#php #injection 

Dependency Injection: Standardize and Centralize The Objects

DependencyInjection Component

The DependencyInjection component allows you to standardize and centralize the way objects are constructed in your application.

Resources

• Documentation
• Contributing
• Report issues and send Pull Requests in the main Symfony repository

Author: symfony
Source Code: https://github.com/symfony/dependency-injection
License: MIT License

#php #symfony #injection 

PHP DI: The Dependency Injection Container for Humans

PHP-DI is a dependency injection container meant to be practical, powerful, and framework-agnostic.

Read more on the website: php-di.org

Get community support in the Gitter chat room.

For Enterprise

Available as part of the Tidelift Subscription

The maintainers of php-di/php-di and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. Learn more.

Author: PHP-DI
Source Code: https://github.com/PHP-DI/PHP-DI
License: MIT License

#php #injection 

Disco: PSR-11 Compatible Dependency Injection Container for PHP

bitexpert/disco

This package provides a PSR-11 compatible, annotation-based dependency injection container. Have a look at the disco-demos project to find out how to use Disco.

Installation

The preferred way of installing bitexpert/disco is through Composer. You can add bitexpert/disco as a dependency, as follows:

composer.phar require bitexpert/disco

Usage

To instantiate Disco use the following code in your bootstrapping logic. Create an instance of the \bitExpert\Disco\AnnotationBeanFactory and register the instance with the \bitExpert\Disco\BeanFactoryRegistry. The second step is important as Disco needs to grab the active container instance in a few locations where it does not have access to the container instance itself.

<?php

$beanFactory = new \bitExpert\Disco\AnnotationBeanFactory(MyConfiguration::class);
\bitExpert\Disco\BeanFactoryRegistry::register($beanFactory);

Next up you need to create a configuration class MyConfiguration and document it with a @Configuration annotation.

<?php

use bitExpert\Disco\Annotations\Configuration;

/**
 * @Configuration
 */
class MyConfiguration
{
}

To declare a configuration entry, 1) add a method to your MyConfiguration class, and 2) annotate the method with the @Bean annotation. Doing this registers the instance with Disco and uses the type specified by the method’s return value. The primary identifier is the method name:

<?php

use bitExpert\Disco\Annotations\Bean;
use bitExpert\Disco\Annotations\Configuration;
use bitExpert\Disco\Helper\SampleService;

/**
 * @Configuration
 */
class MyConfiguration
{
    /**
     * @Bean
     */
    public function mySampleService() : SampleService
    {
        return new SampleService();
    }
}

To let Disco return the entry with the id mySampleService call the get() method of \bitExpert\Disco\AnnotationBeanFactory, as follows:

<?php

$beanFactory->get('mySampleService');

Documentation

Documentation is in the docs tree, and can be compiled using bookdown.

$ php ./vendor/bin/bookdown docs/bookdown.json
$ php -S 0.0.0.0:8080 -t docs/html/

Then point your browser to http://localhost:8080/

Contribute

Please feel free to fork and extend existing or add new features and send a pull request with your changes! To establish a consistent code quality, please provide unit tests for all your changes and adapt the documentation.

Want To Contribute?

If you feel that you have something to share, then we’d love to have you. Check out the contributing guide to find out how, as well as what we expect from you.

Resources

• sitepoint.com: Disco with Design Patterns: A Fresh Look at Dependency Injection
• php[architect]: Education Station: Your Dependency Injection Needs a Disco
• Presentation: Disco - A Fresh Look at DI at PHPUGFFM V/2016

License

Disco is released under the Apache 2.0 license.

Author: bitExpert
Source Code: https://github.com/bitExpert/disco
License: Apache-2.0 License

#php #injection 

Container: Small But Powerful Dependency Injection Container

Container (Dependency Injection)  

This package is compliant with PSR-1, PSR-2, PSR-12, PSR-4 and PSR-11. If you notice compliance oversights, please send a patch via pull request.

Install

Via Composer

$ composer require league/container

Requirements

The following versions of PHP are supported by this version.

• PHP 7.2
• PHP 7.3
• PHP 7.4

Documentation

Container has full documentation, powered by Jekyll.

Contribute to this documentation in the docs/ sub-directory.

Testing

Testing includes PHPUnit and PHPStan (Level 7).

$ composer test

Contributing

Please see CONTRIBUTING for details.

Security

If you discover any security related issues, please email philipobenito@gmail.com instead of using the issue tracker.

Credits

• Phil Bennett
• All Contributors
• Orno\Di contributors

License

The MIT License (MIT). Please see License File for more information.

Author: thephpleague
Source Code: https://github.com/thephpleague/container
License: MIT License

#php #container #injection 

Aura Di: Dependency Injection System

Aura.Di

A serializable dependency injection container with constructor and setter injection, interface and trait awareness, configuration inheritance, and much more.

Installation and Autoloading

This package is installable and PSR-4 autoloadable via Composer as aura/di:

composer require aura/di

Alternatively, download a release, or clone this repository, then map the Aura\Di\ namespace to the package src/ directory.

Dependencies

This package requires PHP 7.2 or later. We recommend using the latest available version of PHP as a matter of principle. If you are interested in using this package for older PHP versions, use version 3.x for PHP 5.5+.

Aura library packages may sometimes depend on external interfaces, but never on external implementations. This allows compliance with community standards without compromising flexibility. For specifics, please examine the package composer.json file.

Quality

To run the unit tests at the command line, issue composer install and then phpunit at the package root. This requires Composer to be available as composer, and PHPUnit to be available as phpunit.

This package attempts to comply with PSR-1, PSR-2, PSR-4 and PSR-11. If you notice compliance oversights, please send a patch via pull request.

Community

To ask questions, provide feedback, or otherwise communicate with other Aura users, please join our Google Group.

Documentation

This package is fully documented here.

Aura.Di 2.x and 3.x users may wish to read the migrating documentation.

Author: auraphp
Source Code: https://github.com/auraphp/Aura.Di
License: MIT License

#php #injection 

Swinject Tutorial: Effortless Dependency injection In IOS with Example

In this video we will explore the basics of dependency injection in iOS with a popular framework called Swinject. We'll walk through a practical example of using swinject to bridge various interface driven dependencies.

https://github.com/Swinject/Swinject

#injection #ios #swinject

How to SQL Injections and How To Find Them In Different Types

Hi, amazing hackers in this story you are gonna how to what is SQL injections and how to find them in different types.

SQL injection is also defined as SQLi, an attack scenario on an application web server database by executing malicious queries in the database which results in stealing of data, modification, and deletion of customers data.

#sql #injection 

How to Extend React Dependency Injection with InversifyJS

Dependency injection is a pattern that reduces hardcoded dependencies. It promotes composability by enabling one dependency to be replaced by another of the same type. This article will evaluate the dependency injection support in React and How to Extend React Dependency injection with InversifyJS

1. Why Dependency Injection?
2. Dependency Injection with React
3. Extend using InversifyJS

#react #javascript #injection 

Learn What Is SQL Injection and How It’s Work

Today’s topic is SQL injection. We will see all the resource which is free available on internet and learn how to learn them in a butter sequence.

That’s Why we follow a structure, which is given below -

1. Basic Need to learn SQL injection.
2. Learn what is SQL Injection and how it’s work, type of SQL injection, SQL injection payload etc.
3. Hands on SQL Injection using lab.
4. Read real world found SQL Injection bug bounty reports.
5. Bonus.

#sql #injection