Timeout

Timeout wraps a handler and aborts the process of the handler if the timeout is reached.

Example

package main

import (
	"log"
	"net/http"
	"time"

	"github.com/gin-contrib/timeout"
	"github.com/gin-gonic/gin"
)

func emptySuccessResponse(c *gin.Context) {
	time.Sleep(200 * time.Microsecond)
	c.String(http.StatusOK, "")
}

func main() {
	r := gin.New()

	r.GET("/", timeout.New(
		timeout.WithTimeout(100*time.Microsecond),
		timeout.WithHandler(emptySuccessResponse),
	))

	// Listen and Server in 0.0.0.0:8080
	if err := r.Run(":8080"); err != nil {
		log.Fatal(err)
	}
}

custom error response

Add new error response func:

func testResponse(c *gin.Context) {
	c.String(http.StatusRequestTimeout, "test response")
}

Add WithResponse option.

	r.GET("/", timeout.New(
		timeout.WithTimeout(100*time.Microsecond),
		timeout.WithHandler(emptySuccessResponse),
		timeout.WithResponse(testResponse),
	))

custom middleware

package main

import (
	"log"
	"net/http"
	"time"

	"github.com/gin-contrib/timeout"
	"github.com/gin-gonic/gin"
)

func testResponse(c *gin.Context) {
	c.String(http.StatusRequestTimeout, "timeout")
}

func timeoutMiddleware() gin.HandlerFunc {
	return timeout.New(
		timeout.WithTimeout(500*time.Millisecond),
		timeout.WithHandler(func(c *gin.Context) {
			c.Next()
		}),
		timeout.WithResponse(testResponse),
	)
}

func main() {
	r := gin.New()
	r.Use(timeoutMiddleware())
	r.GET("/slow", func(c *gin.Context) {
		time.Sleep(800 * time.Millisecond)
		c.Status(http.StatusOK)
	})
	if err := r.Run(":8080"); err != nil {
		log.Fatal(err)
	}
}