fix: add limiter middleware feature

internal/app/adapter/server/http/middleware/limit.go

@@ -0,0 +1,51 @@
+package middleware
+
+import (
+	"net/http"
+	"time"
+
+	"github.com/labstack/echo/v4"
+	"github.com/labstack/echo/v4/middleware"
+	"golang.org/x/time/rate"
+)
+
+type LimitConfig struct {
+	// Skipper defines a function to skip middleware.
+	Skipper middleware.Skipper
+
+	// Limiter handle the limit of request
+	Limiter *rate.Limiter
+}
+
+func (c *LimitConfig) WithSkipper(skipper middleware.Skipper) *LimitConfig {
+	c.Skipper = skipper
+	return c
+}
+
+func (c *LimitConfig) WithLimiter(limiter *rate.Limiter) *LimitConfig {
+	c.Limiter = limiter
+	return c
+}
+
+func NewDefaultLimitConfig() *LimitConfig {
+	return &LimitConfig{
+		Skipper: middleware.DefaultSkipper,
+		Limiter: rate.NewLimiter(rate.Every(time.Second/10), 60),
+	}
+}
+
+func Limit(config LimitConfig) echo.MiddlewareFunc {
+	return func(next echo.HandlerFunc) echo.HandlerFunc {
+		return func(c echo.Context) error {
+			if config.Skipper(c) {
+				return next(c)
+			}
+
+			if !config.Limiter.Allow() {
+				return echo.NewHTTPError(http.StatusTooManyRequests, "requests are too frequent")
+			}
+
+			return next(c)
+		}
+	}
+}

internal/app/adapter/server/http/router/api_group.go

@@ -9,6 +9,7 @@ import (
 	echoSwagger "github.com/swaggo/echo-swagger"
 
 	"go-scaffold/internal/app/adapter/server/http/api/docs"
+	imiddleware "go-scaffold/internal/app/adapter/server/http/middleware"
 	"go-scaffold/internal/config"
 )
 
@@ -47,6 +48,7 @@ func (g *ApiGroup) setup(prefix string, rg *echo.Group) {
 func (g *ApiGroup) useMiddlewares() {
 	// allowed to cross
 	g.group.Use(middleware.CORS())
+	g.group.Use(imiddleware.Limit(*imiddleware.NewDefaultLimitConfig()))
 }
 
 func (g *ApiGroup) useRoutes(e *echo.Echo) {