Gin Middleware Adapter

This package provides a simple adapter to make it easier to use common Go HTTP middleware packages with the Gin Web Framework.

For example, if you have some middleware that uses the common pattern of having a function that takes an http.Handler to wrap and returning another http.Handler, you can use adapter.Wrap.

Using the nosurf CSRF middleware:

engine.Use(adapter.Wrap(nosurf.NewPure)) 

If you need to pass in the wrapped handler explictly (eg. via configuration), or use a different signature, you can use adapter.New, which returns a handler that can be passed to the middleware, and a function that wraps the handler the middleware returns into a gin.HandlerFunc:

nextHandler, wrapper := adapter.New()
ns := nosurf.New(nextHandler)
ns.SetFailureHandler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
    http.Error(w, "Custom error about invalid CSRF tokens", http.StatusBadRequest)
}))
engine.Use(wrapper(ns)) 

The wrapper will ensure that the request's context is correctly passed down the stack and that the next middleware in the chain is called.

It will additionally call the Abort method on Gin's context if the middleware does not call the wrapped handler.