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httpmid.go
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httpmid.go
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package httpkit
import "net/http"
// MuxMiddleware is a middleware that applies to route handler.
// It is used to create a middleware that is compatible with httpkit.Handler.
type MuxMiddleware func(Handler) Handler
// Then is a syntactic sugar for applying the middleware to the handler.
// Instead of: m(h), you can write: m.Then(h).
func (m MuxMiddleware) Then(h Handler) Handler { return m(h) }
// NetMiddleware is a middleware that applies to the root handler.
// It is used to create a middleware that is compatible with net/http.
type NetMiddleware func(http.Handler) http.Handler
// Then is a syntactic sugar for applying the middleware to the handler.
// Instead of: m(h), you can write: m.Then(h).
func (n NetMiddleware) Then(h http.Handler) http.Handler { return n(h) }
// ReduceMuxMiddleware reduces a set of mux middlewares into a single mux
// middleware. For example:
//
// ReduceMuxMiddleware(m1, m2, m3).Then(h)
// will be equivalent to:
// m1(m2(m3(h)))
func ReduceMuxMiddleware(middlewares ...MuxMiddleware) MuxMiddleware {
return reduceMuxMiddleware(middlewares)
}
// ReduceNetMiddleware reduces a set of net middlewares into a single net
// middleware. For example:
//
// ReduceNetMiddleware(m1, m2, m3).Then(h)
// will be equivalent to:
// m1(m2(m3(h)))
func ReduceNetMiddleware(middlewares ...NetMiddleware) NetMiddleware {
return reduceNetMiddleware(middlewares)
}
func reduceMuxMiddleware(middlewares []MuxMiddleware) MuxMiddleware {
return func(next Handler) Handler {
for i := len(middlewares) - 1; i >= 0; i-- {
next = middlewares[i].Then(next)
}
return next
}
}
func reduceNetMiddleware(middlewares []NetMiddleware) NetMiddleware {
return func(next http.Handler) http.Handler {
for i := len(middlewares) - 1; i >= 0; i-- {
next = middlewares[i].Then(next)
}
return next
}
}