Update vendor

vendor/github.com/labstack/echo/cookbook/middleware/server.go

@@ -0,0 +1,82 @@
+package main
+
+import (
+	"net/http"
+	"strconv"
+	"sync"
+	"time"
+
+	"github.com/labstack/echo"
+)
+
+type (
+	Stats struct {
+		Uptime       time.Time      `json:"uptime"`
+		RequestCount uint64         `json:"requestCount"`
+		Statuses     map[string]int `json:"statuses"`
+		mutex        sync.RWMutex
+	}
+)
+
+func NewStats() *Stats {
+	return &Stats{
+		Uptime:   time.Now(),
+		Statuses: make(map[string]int),
+	}
+}
+
+// Process is the middleware function.
+func (s *Stats) Process(next echo.HandlerFunc) echo.HandlerFunc {
+	return func(c echo.Context) error {
+		if err := next(c); err != nil {
+			c.Error(err)
+		}
+		s.mutex.Lock()
+		defer s.mutex.Unlock()
+		s.RequestCount++
+		status := strconv.Itoa(c.Response().Status)
+		s.Statuses[status]++
+		return nil
+	}
+}
+
+// Handle is the endpoint to get stats.
+func (s *Stats) Handle(c echo.Context) error {
+	s.mutex.RLock()
+	defer s.mutex.RUnlock()
+	return c.JSON(http.StatusOK, s)
+}
+
+// ServerHeader middleware adds a `Server` header to the response.
+func ServerHeader(next echo.HandlerFunc) echo.HandlerFunc {
+	return func(c echo.Context) error {
+		c.Response().Header().Set(echo.HeaderServer, "Echo/3.0")
+		return next(c)
+	}
+}
+
+func main() {
+	e := echo.New()
+
+	// Debug mode
+	e.Debug = true
+
+	//-------------------
+	// Custom middleware
+	//-------------------
+	// Stats
+	s := NewStats()
+	e.Use(s.Process)
+	e.GET("/stats", s.Handle) // Endpoint to get stats
+
+	// Server header
+	e.Use(ServerHeader)
+
+	// Handler
+	e.GET("/", func(c echo.Context) error {
+		return c.String(http.StatusOK, "Hello, World!")
+	})
+
+	// Start server
+	e.Logger.Fatal(e.Start(":1323"))
+}