gomw

README

gomw - go-http-middleware

A framework for fasten creating Go HTTP Middleware

Get it

$ go get -u github.com/vchitai/gomw

Usage

Implement a simple authenticate middleware with gomw, find it at example

package main

import (
	"log"
	"net"
	"net/http"

	"github.com/vchitai/gomw"
)

const AccessToken = "something"

func isValidToken(token string) bool {
	if token == AccessToken {
		return true
	}
	return false
}

func main() {
	authenticateMw := gomw.NewHTTPMiddleware(func(writer http.ResponseWriter, request *http.Request) (*http.Request, bool) {
		token := request.Header.Get("Authorization")
		if isValidToken(token) {
			return request, true
		}

		writer.WriteHeader(http.StatusUnauthorized)
		_, _ = writer.Write([]byte(http.StatusText(http.StatusUnauthorized)))
		return nil, false
	}, func(resp gomw.HTTPResponse) gomw.HTTPResponse {
		return gomw.NewHTTPResponse(resp.Body(), resp.Code()) // do some edit
	})

	var mux = http.NewServeMux() // create new server
	mux.Handle("/", authenticateMw(http.HandlerFunc(func(writer http.ResponseWriter, request *http.Request) {
		_, _ = writer.Write([]byte("Hello world!"))
	})))

	l, err := net.Listen("tcp", ":10080")
	if err != nil {
		log.Fatal(err)
	}

	if err := http.Serve(l, mux); err != nil {
		log.Fatal(err)
	}
}

Documentation

Index

• type AfterHook
• type BeforeHook
• type HTTPMiddleware
  • func NewHTTPAfterMiddleware(after AfterHook) HTTPMiddleware
  • func NewHTTPBeforeMiddleware(before BeforeHook) HTTPMiddleware
  • func NewHTTPMiddleware(before BeforeHook, after AfterHook) HTTPMiddleware
• type HTTPResponse
  • func NewHTTPResponse(body []byte, code int) HTTPResponse

Types

type AfterHook

type AfterHook func(response HTTPResponse) HTTPResponse

type BeforeHook

type BeforeHook func(writer http.ResponseWriter, request *http.Request) (*http.Request, bool)

type HTTPMiddleware

type HTTPMiddleware func(next http.Handler) http.Handler

func NewHTTPAfterMiddleware

func NewHTTPAfterMiddleware(after AfterHook) HTTPMiddleware

func NewHTTPBeforeMiddleware

func NewHTTPBeforeMiddleware(before BeforeHook) HTTPMiddleware

func NewHTTPMiddleware

func NewHTTPMiddleware(before BeforeHook, after AfterHook) HTTPMiddleware

type HTTPResponse

type HTTPResponse interface {
	Body() []byte
	Code() int
}

func NewHTTPResponse

func NewHTTPResponse(body []byte, code int) HTTPResponse