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https://github.com/gravityblast/traffic

Sinatra inspired regexp/pattern mux and web framework for Go [NOT MAINTAINED]
https://github.com/gravityblast/traffic

Last synced: 27 days ago
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Sinatra inspired regexp/pattern mux and web framework for Go [NOT MAINTAINED]

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# Traffic

[![Build Status](https://travis-ci.org/pilu/traffic.png?branch=master)](https://travis-ci.org/pilu/traffic)

Package traffic - a Sinatra inspired regexp/pattern mux for [Go](http://golang.org/ "The Go programming language").

## Installation

go get github.com/pilu/traffic

## Features

* [Regexp routing](https://github.com/pilu/traffic/blob/master/examples/simple/main.go)
* [Before Filters](https://github.com/pilu/traffic/blob/master/examples/before-filter/main.go)
* [Custom not found handler](https://github.com/pilu/traffic/blob/master/examples/not-found/main.go)
* [Middlewares](https://github.com/pilu/traffic/blob/master/examples/middleware/main.go)
* Examples: [Airbrake Middleware](https://github.com/pilu/traffic-airbrake), [Chrome Logger Middleware](https://github.com/pilu/traffic-chromelogger)
* [Templates/Views](https://github.com/pilu/traffic/tree/master/examples/templates)
* [Easy Configuration](https://github.com/pilu/traffic/tree/master/examples/configuration)

## Development Features

* [Shows errors and stacktrace in browser](https://github.com/pilu/traffic/tree/master/examples/show-errors)
* [Serves static files](https://github.com/pilu/traffic/tree/master/examples/static-files)
* Project Generator

`development` is the default environment. The above middlewares are loaded only in `development`.

If you want to run your application in `production`, export `TRAFFIC_ENV` with `production` as value.

```bash
TRAFFIC_ENV=production your-executable-name
```

## Installation

Dowload the `Traffic` code:

```bash
go get github.com/pilu/traffic
```

Build the command line tool:

```bash
go get github.com/pilu/traffic/traffic
```

Create a new project:
```bash
traffic new hello
```

Run your project:
```bash
cd hello
go build && ./hello
```

You can use [Fresh](https://github.com/pilu/fresh) if you want to build and restart your application every time you create/modify/delete a file.

## Example:
The following code is a simple example, the documentation in still in development.
For more examples check the `examples` folder.

```go
package main

import (
"net/http"
"github.com/pilu/traffic"
"fmt"
)

func rootHandler(w traffic.ResponseWriter, r *traffic.Request) {
fmt.Fprint(w, "Hello World\n")
}

func pageHandler(w traffic.ResponseWriter, r *traffic.Request) {
params := r.URL.Query()
fmt.Fprintf(w, "Category ID: %s\n", params.Get("category_id"))
fmt.Fprintf(w, "Page ID: %s\n", params.Get("id"))
}

func main() {
router := traffic.New()

// Routes
router.Get("/", rootHandler)
router.Get("/categories/:category_id/pages/:id", pageHandler)

router.Run()
}
```

## Before Filters

You can also add "before filters" to all your routes or just to some of them:

```go
router := traffic.New()

// Executed before all handlers
router.AddBeforeFilter(checkApiKey).
AddBeforeFilter(addAppNameHeader).
AddBeforeFilter(addTimeHeader)

// Routes
router.Get("/", rootHandler)
router.Get("/categories/:category_id/pages/:id", pageHandler)

// "/private" has one more before filter that checks for a second api key (private_api_key)
router.Get("/private", privatePageHandler).
AddBeforeFilter(checkPrivatePageApiKey)
```

Complete example:

```go
func rootHandler(w traffic.ResponseWriter, r *traffic.Request) {
fmt.Fprint(w, "Hello World\n")
}

func privatePageHandler(w traffic.ResponseWriter, r *traffic.Request) {
fmt.Fprint(w, "Hello Private Page\n")
}

func pageHandler(w traffic.ResponseWriter, r *traffic.Request) {
params := r.URL.Query()
fmt.Fprintf(w, "Category ID: %s\n", params.Get("category_id"))
fmt.Fprintf(w, "Page ID: %s\n", params.Get("id"))
}

func checkApiKey(w traffic.ResponseWriter, r *traffic.Request) {
params := r.URL.Query()
if params.Get("api_key") != "foo" {
w.WriteHeader(http.StatusUnauthorized)
}
}

func checkPrivatePageApiKey(w traffic.ResponseWriter, r *traffic.Request) {
params := r.URL.Query()
if params.Get("private_api_key") != "bar" {
w.WriteHeader(http.StatusUnauthorized)
}
}

func addAppNameHeader(w traffic.ResponseWriter, r *traffic.Request) {
w.Header().Add("X-APP-NAME", "My App")
}

func addTimeHeader(w traffic.ResponseWriter, r *traffic.Request) {
t := fmt.Sprintf("%s", time.Now())
w.Header().Add("X-APP-TIME", t)
}

func main() {
router := traffic.New()

// Routes
router.Get("/", rootHandler)
router.Get("/categories/:category_id/pages/:id", pageHandler)
// "/private" has one more before filter that checks for a second api key (private_api_key)
router.Get("/private", privatePageHandler).
AddBeforeFilter(checkPrivatePageApiKey)

// Executed before all handlers
router.AddBeforeFilter(checkApiKey).
AddBeforeFilter(addAppNameHeader).
AddBeforeFilter(addTimeHeader)

router.Run()
}
```

## Author

* [Andrea Franz](http://gravityblast.com)

## More

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