Rest GO - Helpful library for Rest API

A package that provide many helpful methods for working with rest api.

And if u are tired of written, this:

func SomeHandler(w http.ResponseWriter, r *http.Request) {

    w.Header().Add("Content-Type", "application/json")

    product := &product{"Smart TV", 50.00}
    
    bytes, err := json.Marshal(product)
    
    if err != nil {
    	w.WriteHeader(http.StatusInternalServerError)
        // this is super bad!
        message := fmt.Sprintf(`{"message": "%s"}`, err.Error())
    	w.Write([]byte(message))
        return
    }
    
    w.WriteHeader(http.StatusOk)
    w.Write(bytes)
}

Get started:

• Install rest GO with one line of code

rest package

The rest package provides some helpful methods that allow you to write better rest api in GO.

• Allows for very readable code

See it in action:

package yours

import (
    "github.com/edermanoel94/rest-go"
    "net/http"
)

type product struct {
    Name  string `json:"name"`
    Price float32 `json:"price"`
}

func SomeHandler(w http.ResponseWriter, r *http.Request) {
    rest.Marshalled(w, &product{"Smart TV", 50.00}, http.StatusOK)
}

A payload send to your API and desarialize to a struct, to easy!

package yours

import (
    "github.com/edermanoel94/rest-go"
    "net/http"
)

type product struct {
    Name  string `json:"name"`
    Price float32 `json:"price"`
}

// [POST] body: {"name": "eder", "price": 20.00}
func SomePostHandler(w http.ResponseWriter, r *http.Request) {

    product := product{}
    err := rest.GetBody(r.Body, &product)
    if err != nil {
        // do stuff with error
    }
    // Do stuff...
}    

Working with mux package to check if path variable exist.

package yours

import (
    "github.com/edermanoel94/rest-go"
    "github.com/gorilla/mux"
    "net/http"
)

type product struct {
    Name  string `json:"name"`
    Price float32 `json:"price"`
}

// [GET] url: /product/{id}
func SomePostHandler(w http.ResponseWriter, r *http.Request) {
    params := mux.Vars(r)
    err := rest.CheckPathVariables(params, "id")
    if err != nil {
        // do stuff with error
    }
}

TODO List

• Working with custom errors
• Add Response for ALB and API Gateway
• Benchmarking (Memory, CPU)
• Working with CheckPathVariables and GetPathVariable in Standard library
• More tests
• Working with pagination

Installation

To install, use go get using go modules:

go get github.com/edermanoel94/rest-go@latest

Example

To install and build:

cd examples

And use go modules for install packages:

go mod tidy 

Then, to run:

go build

Contributing

Please feel free to submit issues, fork the repository and send pull requests!

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License

This project is licensed under the terms of the MIT license.