RESTful HTTP API server using Go, Cobra CLI, Go-chi

Description

This is a basic RESTful API server, build with Golang. In this API server I have implemented Cobra CLI for running the API from the CLI and also used go-chi instead of Go net/http.

Installation

• git clone https://github.com/AshrafulHaqueToni/httpAPIserver.git
• cd httpAPIserver
• go install ./httpAPIserver

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Run by CLI Commands

• start the API in default port : 8081 by httpAPIserver start
• start the API in your given port by httpAPIserver start -p=8088, give your port number in the place of 8088

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Run the API server in docker container using dockerfile

Create docker image from the dockerfile

• docker build -t <image_name> .
• or docker build -t <docker_hub_username>/<image_name>:<tag> . (if your do this then don't need to give tag before dockerhub push)

Run the API server from the docker image in docker container

• docker run -p 8088:8080 <image_name> (valid when used CMD ["start", "-p", "8080"] in Dockerfile)
• docker run -p 8081:8088 <image_name> start -p "8088" (valid for current version of Dockerfile, when did not used CMD in Dockerfile)

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upload the image to Docker Hub

• docker login --username=<docker_hub_username>
• docker tag <id_of_the_created_image> <docker_hub_username>/<name_of_the_image>:<tag>
• docker push <docker_hub_username>/<name_of_the_image>:<tag>

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run using volume (valid for current version where did not gave .env file in docker image)

• docker run -v <absolute_host_path/.env>:<container_path/.env> -p 8088:8089 <image_name> start -p 8089

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The Endpoints of this REST API

Endpoint	Function	Method	StatusCode	Authentication
/login	logIn	GET	StatusOK, StatusUnauthorized	Basic
/products	ShowAllProducts	GET	StatusOK, StatusUnauthorized	JWT
/brands	ShowAllBrands	GET	StatusOK, StatusUnauthorized	JWT
/products/{id}	GetProducts	GET	StatusOK, StatusNoContent, StatusUnauthorized	JWT
/brands/{id}	GetBrands	GET	StatusOK, StatusNoContent, StatusUnauthorized	JWT
/products/{id}	DeleteProduct	DELETE	StatusOK, StatusNoContent, StatusUnauthorized	JWT
/products/addproduct	AddProducts	POST	StatusOK, StatusUnauthorized	JWT
/products/update/{id}	UpdateProducts	POST	StatusOK, StatusNoContent,StatusUnauthorized	JWT
/brands/delete/{id}	DeleteBrand	DELETE	StatusOK, StatusUnauthorized	JWT
/brands/addbrand	AddBrands	POST	StatusOK, StatusUnauthorized	JWT
/logout	Logout	POST	StatusOK, StatusUnauthorized	JWT

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Data Model

• Brand Model

    type Brands struct {
        BrandId      int    `json:"brand_id"`
        BrandName    string `json:"brand_name"`
        BrandProduct []int  `json:"brand_product"`
    }

• Product Model

    type Products struct {
        ProductId     int    `json:"product_id"`
        ProductName   string `json:"product_name"`
        ProductBrand  Brands `json:"product_brand"`
        ProductPrice  int    `json:"product_price"`
        ProductStatus bool   `json:"product_status"`
    }

• Credentials Model

   type Credentials struct {
        Username string `json:"username"`
        Password string `json:"password"`
    }

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JWT Authentication

• implemented JWT authentication
• first of all user need to hit /login endpoint with basic authentication then a token will be given and with that token for specific time user can do other request

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Run the API server

• curl -X POST -H "Content-Type:application/json" -d '{"username":"Ashraful","password":"12345"}' http://localhost:8081/login

Get all products

• curl -X GET -H "Authorization: Bearer ${TOKEN}" http://localhost:8081/products

Get single product

• curl -X GET -H "Authorization: Bearer ${TOKEN}" http://localhost:8081/products/1

Get all brands

• curl -X GET -H "Authorization: Bearer ${TOKEN}" http://localhost:8081/brands

Get single brand

• curl -X GET -H "Authorization: Bearer ${TOKEN}" http://localhost:8081/brands/1

add new product

curl -X POST -H "Content-Type:application/json" -d '{"product_id":5,"product_name":"keyboard","product_brand":{"brand_id":3,"brand_name":"A4tech","brand_product":[]}}' -H "Authorization: Bearer ${TOKEN}" http://localhost:8081/products/addproduct

add new brand

curl -X POST -H "Content-Type:application/json" -d '{"brand_id":4,"brand_name":"Dell","brand_product":[]}' -H "Authorization: Bearer ${TOKEN}" http://localhost:8081/brands/addbrand

Update any product

curl -X POST -H "Content-Type:application/json" -d '{"product_id":4,"product_name":"mobile","product_brand":{"brand_id":2,"brand_name":"apple","brand_product":[3,4]}}' -H "Authorization: Bearer ${TOKEN}" http://localhost:8081/products/update/4

Delete a product

curl -X DELETE -H 'Accept: application/json' -H "Authorization: Bearer ${TOKEN}" http://localhost:8081/products/delete/1`

Delete a brand

curl -X DELETE -H 'Accept: application/json' -H "Authorization: Bearer ${TOKEN}" http://localhost:8081/brands/delete/1`

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API Endpoints Testing

• Primarily tested the API endpoints by Postman
• E2E Testing.
  • Checked response status code with our expected status code