Middleware example

Signed-off-by: Vishal Rana <vr@labstack.com>

README.md

@@ -8,7 +8,7 @@ Bolt is a fast HTTP router (zero memory allocation) + micro web framework in Go.
 
 ### Benchmark
 Based on [julienschmidt/go-http-routing-benchmark] (https://github.com/vishr/go-http-routing-benchmark)
-#### [GitHub](http://developer.github.com/v3)
+##### [GitHub API](http://developer.github.com/v3)
 ```
 BenchmarkAce_GithubAll          20000	     70743 ns/op	   13792 B/op	     167 allocs/op
 BenchmarkBear_GithubAll         10000	    251638 ns/op	   79952 B/op	     943 allocs/op

context.go

@@ -60,7 +60,6 @@ func (c *Context) JSON(n int, i interface{}) {
 }
 
 func (c *Context) File(n int, file, name string) {
-
 }
 
 // Next executes the next handler in the chain.

example/main.go

@@ -4,6 +4,7 @@ import (
 	"net/http"
 
 	"github.com/labstack/bolt"
+	mw "github.com/labstack/bolt/middleware"
 )
 
 type user struct {
@@ -40,6 +41,7 @@ func getUser(c *bolt.Context) {
 
 func main() {
 	b := bolt.New()
+	b.Use(mw.Logger())
 	b.Index("public/index.html")
 	b.Static("/js", "public/js")
 	b.Post("/users", createUser)

middleware/logger.go

@@ -13,20 +13,20 @@ func Logger() bolt.HandlerFunc {
 		start := time.Now()
 		c.Next()
 		end := time.Now()
-		co := color.Green
+		col := color.Green
 		m := c.Request.Method
 		p := c.Request.URL.Path
 		s := c.Response.Status()
 
 		switch {
 		case s >= 500:
-			co = color.Red
+			col = color.Red
 		case s >= 400:
-			co = color.Yellow
+			col = color.Yellow
 		case s >= 300:
-			co = color.Cyan
+			col = color.Cyan
 		}
 
-		log.Printf("%s %s %s %s", m, p, co(s), end.Sub(start))
+		log.Printf("%s %s %s %s", m, p, col(s), end.Sub(start))
 	}
 }