ctxrouter

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context router, high performance HTTP request router with context

ctxrouter 최신버젼 다운로드

최종 버전 다운로드 (.zip)

// repository documentation

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# A HTTP request router with Context

[![Go Report Card](https://goreportcard.com/badge/github.com/ti/ctxrouter)](https://goreportcard.com/report/github.com/ti/ctxrouter)

* [Features](#features)
* [Examples](#examples)
  * [Hello Word](#hello-word)
  * [Basic Example](#basic-example)
  * [Custom Error](#custom-error)
  * [With Powerful Context](#with-powerful-context)
  * [Decode Request Before Business Layer](#decode-request-before-business-layer)
  * [Normal HTTP Handler](#normal-http-handler)
  * [Static Files](#static-files)
  * [Restful Api](#restful-api)
* [Full Example](#full-example)

# Features

* Context Append on Current Function
* Best Performance (no regexp match)
* Wildcards Router Support (PathPrefix)
* Decode request body before business layer (JSON, xml or other)
* Auto reflect url params to numbers
* Zero Garbage

# Examples

## Hello Word

```go
func main() {
	r := ctxrouter.New()
	r.Get("/hello.html", (*Context).HelloHtml)
	r.Get("/hello/{name}/id/{age}", (*Context).Hello)
	r.Get("/hello/{name}/error", (*Context).HelloHtml)
	http.ListenAndServe(":8081", r)
}

func (ctx *Context) HelloHtml() {
	ctx.Writer.Write([]byte("<html>hello</html>"))
}

func (ctx *Context) Hello(name string, id int) (interface{}, error){
	return map[string]interface{}{"name":name, "id":id},nil
}

func (ctx *Context) HelloError(name string) (interface{}, error){
	return nil, errors.CodeError(errors.InvalidArgument).WithDescription("some error")
}

type Context struct {
	ctxrouter.Context
}
```

## Basic Example

```go
package main

import (
	"github.com/ti/ctxrouter"
	"net/http"
	"strconv"
)

func main() {
	r := ctxrouter.New()
	r.Get("/resp/{msg}", (*Context).Resp)
	r.Get("/basic/{name}", (*Context).Hello)
	r.Get("/normal/{name}", NormalHello)
	r.Get("/func/{name}/{id}",Hello)
	r.Get("/", (*Context).Index)
	//auto decode url with string or int
	r.Get("/basic/{name}/json/{age}", (*Context).Json)
	//match path prefixes /all/*:
	r.All("/basic/{path=**}",(*Context).All)
	//a simple func without implement ctxrouter.Context
	http.ListenAndServe(":8081", r)
}

//context common style
func (ctx *Context) Resp(msg string) (interface{}, error){
	if msg == "error" {
		return nil,errors.CodeError(errors.InvalidArgument).WithDescription"hello error")
	}
	return map[string]bool{"success":true},nil
}

//context style
func (ctx *Context) Hello(id string) {
	//ctx.Request ...
	ctx.Writer.Write([]byte("hello " + id))
}
//normal style
func NormalHello(w http.ResponseWriter, r *http.Request) {
	w.Write([]byte("hello " + ctxrouter.Params(r)[0]))
}
//func style
func Hello(ctx *ctxrouter.Context, name string,  id int) {
	ctx.Text("hello " + name + ", id is " + strconv.Itoa(id))
}

type Context struct {
	ctxrouter.Context
}

func (c *Context) Index() {
	c.Text("index")
}

func (c *Context) All(path string) {
	c.Text("all router goes here " +  path)
}

func (c *Context) Json(name string, age int) {
	type Person struct {
		Name string
		Age   int
	}
	c.JSON(Person{Name:name,Age:age})
}
```

# Custom Error

```go
func main() {
	r := ctxrouter.New()
	r.Get("/resp1", (*Context).RespError)
	r.Get("/resp2", (*Context).RespErrorDefault)
	http.ListenAndServe(":8081", r)
}

type Error struct {
	Code  int `json:"code"`
	Error   string `json:"error"`
}

func (this *Error) StatusCode() int{
	return 400
}

func (this *Error) IsNil() bool {
	return this.Code == 0
}

//Use Custom error
func (ctx *Context) RespError() (interface{}, *Error){
	return nil,&Error{Code:3000, Error:"some error message"}
}

//use default error
func (ctx *Context) RespErrorDefault() (interface{}, error){
	return nil,errors.CodeError(errors.InvalidArgument).WithDescription"hello error")
}

type Context struct {
	ctxrouter.Context
}
```

## With Powerful Context

```go
//do something  Workflow with ctx router
package main

import (
	"net/http"
	"github.com/ti/ctxrouter"
)

type Context struct {
	ctxrouter.Context
	Data  map[string]string
}

func (c *Context) Start() {
	c.Data = make(map[string]string)
	c.Data["context"] = "0"
	c.Step()
}

func (c *Context) Step() {
	c.Data["context1"] = "1"
	c.End()
}

func (c *Context) End() {
	c.Data["context2"] = "2"
	c.JSON(c.Data)
}

func main() {
	r := ctxrouter.New()
	r.Get("/context",(*Context).Start)
	http.ListenAndServe(":8081", r)
}
```

## Decode Request Before Business Layer

```go
package main

import (
	"net/http"
	"github.com/ti/ctxrouter"
)

//decode request sample
type User struct {
	Id      int             `json:"int"`
	Name    string          `json:"name"`
}

type UserContext struct {
	ctxrouter.Context
	Data  *User
}

//Auto Decode Json or other request
func (ctx *UserContext) DecodeRequest() error {
	ctx.Data = new(User)
	ctx.Context.Data = ctx.Data
	return ctx.Context.DecodeRequest()
}

func (ctx *UserContext) SayHello() {
	ctx.Text("Hello "+ ctx.Data.Name)
}

func main() {
	r := ctxrouter.New()
	r.Post("/users/hello",(*UserContext).SayHello)
	http.ListenAndServe(":8081", r)
}
```

```bash
curl -i -X POST \
   -H "Content-Type:application/json" \
   -d \
'{"name":"leenanxi"}' \
 'http://localhost:8081/users/hello'
```

## Normal HTTP Handler

Alert: This is Not recommended if you start a new project.

```go
package main

import (
	"github.com/ti/ctxrouter"
	"net/http"
)

func NormalHelloHandler(w http.ResponseWriter, r *http.Request) {
	w.Write([]byte("HELLO"))
}

func NormalHandler(w http.ResponseWriter, r *http.Request) {
	params := ctxrouter.Params(r)
	w.Write([]byte("Name:" + params[0] + "\nAge:" + params[1] ))
}

func main() {
	r := ctxrouter.New()
	r.Get("/normal/hello",NormalHelloHandler)
	r.Get("/normal/v1/:name/:age",NormalHandler)
	//support any http.Handler interface
	r.Get("/404",http.NotFoundHandler())
	http.ListenAndServe(":8081", r)
}

```

## How Middleware X?

The router is `http.Handler`,  so you can chain any http.Handler compatible middleware before the router, for  example http://www.gorillatoolkit.org/pkg/handlers

```go
package main

import (
	"github.com/ti/ctxrouter"
	"github.com/gorilla/handlers"
	"os"
	"net/http"
)

//context style
func (ctx *Context) Hello(name string) {
	ctx.Text("hello " + name)
}

func main() {
	r := ctxrouter.New()
	r.Get("/hello/:name", (*Context).Hello)
	http.ListenAndServe(":8081", (handlers.LoggingHandler(os.Stdout, r)))
}

type Context struct {
	ctxrouter.Context
}
```

## Static Files

```go
package main

import (
	"github.com/ti/ctxrouter"
	"net/http"
)

func main() {
	var dir = "/your/static/dir/path"
	r := ctxrouter.New()
	r.All("/static/*path",http.StripPrefix("/static/", http.FileServer(http.Dir(dir))))
	http.ListenAndServe(":8081", r)
}
```

## Restful Api

```go
package main

import (
	"net/http"
	"github.com/ti/ctxrouter"
)
func main() {
	r := ctxrouter.New()
	r.Get("/apps", (*AppContext).GetApps)
	r.Get("/apps/{id}", (*AppContext).GetApp)
	r.Post("/apps", (*AppContext).PostApps)
	r.Patch("/apps/{id}", (*AppContext).PatchApp)
	r.Put("/apps/{id}", (*AppContext).PutApp)
	r.Delete("/apps/{id}", (*AppContext).DeleteApp)
	http.ListenAndServe(":8081", r)
}
type AppContext struct {
	ctxrouter.Context
}
func (ctx *AppContext) GetApps() {
	ctx.Text("get apps")
}
func (ctx *AppContext) GetApp(id string) {
	ctx.Text("get app " + id)
}
func (ctx *AppContext) PostApps() {
	ctx.Text("post apps")
}
func (ctx *AppContext) DeleteApp(id string) {
	ctx.Text("delete app " + id)
}
func (ctx *AppContext) PutApp(id string) {
	ctx.Text("put app " + id)
}
func (ctx *AppContext) PatchApp(id string) {
	ctx.Text("patch app " + id)
}
```

## Full Example

```go
//full example with all features in one file, you can read sections above
package main

import (
	"net/http"
	"fmt"
	"github.com/ti/ctxrouter"
)

func main() {
	r := ctxrouter.New()
	r.Get("/", (*Controller).Index)
	r.Get("/basic/{name}", (*Controller).Hello)
	//match path prefixes /all/*:
	r.All("/basic/{path=**}",(*Controller).All)
	//auto decode url with string or int
	r.Get("/basic/{name}/json/:age", (*Controller).Json)
	//a simple func without implement ctxrouter.Context
	r.Get("/basic/{name}/simple",Simple)

r.Post("/users/hello",(*UserContext).PrintHello)

//do something  Workflow with ctx router
	r.Get("/context/",(*Context).Start)

r.Get("/normal/hello",NormalHelloHandler)
	r.Get("/normal/v1/{name}/{age}",NormalHandler)
	//support any http.Handler interface
	r.Get("/404",http.NotFoundHandler())

//static files
	var dir = "/your/static/dir/path"
	r.All("/static/{path=*}",http.StripPrefix("/static/", http.FileServer(http.Dir(dir))))
	http.ListenAndServe(":8081", r)
}

type Controller struct {
	ctxrouter.Context
}

func (c *Controller) Index() {
	c.Text("index")
}

func (c *Controller) Hello(name string) {
	fmt.Fprintln(c.Writer, "hello "+name)
}

func (c *Controller) All(path string) {
	c.Text("all router goes here " +  path)
}
//input json and output json
func (c *Controller) Json(name string, age int) {
	type Person struct {
		Name string
		Age   int
	}
	c.JSON(Person{Name:name,Age:age})
}

func Simple(ctx *ctxrouter.Context, name string) {
	ctx.Text("simple " + name)
}

//decode request sample
type User struct {
	Id      int             `json:"int"`
	Name    string          `json:"name"`
}

type UserContext struct {
	ctxrouter.Context
	Data  *User
}

//Auto Decode Json or other request
func (ctx *UserContext) DecodeRequest() error{
	ctx.Data = new(User)
	ctx.Context.Data = ctx.Data
	return ctx.Context.DecodeRequest()
}

func (ctx *UserContext) PrintHello() {
	ctx.Text("Hello "+ ctx.Data.Name)
}

type Context struct {
	ctxrouter.Context
	Data  map[string]string
}

func (c *Context) Start() {
	c.Data = make(map[string]string)
	c.Data["context"] = "0"
	c.Step()
}

func (c *Context) Step() {
	c.Data["context1"] = "1"
	c.End()
}

func (c *Context) End() {
	c.Data["context2"] = "2"
	c.JSON(c.Data)
}

func NormalHelloHandler(w http.ResponseWriter, r *http.Request) {
	w.Write([]byte("HELLO"))
}

func NormalHandler(w http.ResponseWriter, r *http.Request) {
	//get router Params from "X-Ctxrouter-Params" without any extra function
	params := ctxrouter.Params(r)
	w.Write([]byte("Name:" + params[0] + "\nAge:" + params[1] ))
}
```

# Thanks

* route matching algorithm is by google

ctxrouter

ctxrouter 최신버젼 다운로드

오늘의 추천 프로젝트

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