gouter's Introduction

What it is?

Gouter is implementation of http router created for understanding principle of trie data structure and prefix find algorithms. It has a pretty simple code to understand, but the functionality is poor. The idea of this project is the most readable code for understanding basic functionality of Radix tree.

Usage

package main

import (
	"github.com/furdarius/gouter"
	"io"
	"net/http"
)

func Index(w http.ResponseWriter, req *http.Request, params gouter.Params) {
	io.WriteString(w, "Index Method")
}

func Show(w http.ResponseWriter, req *http.Request, params gouter.Params) {
	// gouter.Params is just map where key is param name
	io.WriteString(w, "Show Method. ID: "+params["id"])
}

func Edit(w http.ResponseWriter, req *http.Request, params gouter.Params) {
	io.WriteString(w, "Edit Method")
}

func main() {
	gouterInstance := gouter.New()

	gouterInstance.Add("GET", "/", func(w http.ResponseWriter, req *http.Request, params gouter.Params) {
		io.WriteString(w, "My url is "+req.URL.String())
	})

	gouterInstance.Add("GET", "/list", Index)

	gouterInstance.Add("GET", "/list/:id", Show)

	gouterInstance.Add("GET", "/list/:id/edit", Edit)

	// You can set custom 404 error handler
	gouterInstance.SetNotFoundHandler(func(w http.ResponseWriter, req *http.Request) {
		http.Error(w, "404 custom error!", http.StatusNotFound)
	})

	http.ListenAndServe(":8080", gouterInstance)
}

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