如何在Google App Engine中使用Gin-gonic中间件？

Question

I'm using Gin-Gonic on a Google App Engine platform for my website. Everything works fine but I'm starting to need to use some middleware.

When I try to use :

router.Use(MyMiddleware())

The middleware returned by MyMiddleware() doesn't seem to be run.

So my questions are :

• Is it possible to use gin-gonic middlewares when working with GAE ?
• If so, how can I achieve it ?

Thank you !

Here are my sources :

main.go :

func init() {
    router := routes.Router()

    // Set the config to the context
    router.Use(SetConfiguration())

    http.Handle("/", router)
}

func SetConfiguration() gin.HandlerFunc {
    configuration := config.GetConfiguration()

    return func(c *gin.Context) {
        c.Set("config", configuration)
        c.Next()
    }
}

PS : routes.Router() simply set a router with gin.New() and add some routes.

Answer 1

The middleware route should be the first to be added before the other routes. See this file from a project of mine where I use CORS Middleware and Auth Middleware

https://github.com/wilsontamarozzi/panda-api/blob/master/routers/router.go