you can refer to golang chi opensource for middleware
在 2017年9月5日星期二 UTC+8下午11:13:40，Ilya Novikov写道：
>
> Hello!I would like to understand how middleware works in go-kit. I want to
> write a middleware auth processor but do not understand how to describe the
> logic of the process.
>
> That is, I need to take the cookie values from the context and perform the
> rights check? After all, in middleware comes only context. Then another
> question arises, what should mw return if access is denied? Thank you!
>
>
> func authMW(methodName string) endpoint.Middleware {
> return func(next endpoint.Endpoint) endpoint.Endpoint {
> return func(ctx context.Context, request interface{}) (interface{},
> error) {
> defer func(begin time.Time) {
> //????
> return next(ctx, request)
> }
> }
> }
>
>
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