39 lines
959 B
Go
39 lines
959 B
Go
package controllers
|
|
|
|
import (
|
|
"log"
|
|
"net/http"
|
|
"time"
|
|
)
|
|
|
|
type Middleware func(http.Handler) http.Handler
|
|
|
|
/*
|
|
Возвращает один middleware, который объединяет все переданные
|
|
|
|
MiddlewaresChain(m1, m2, m3)
|
|
= func(next http.Handler) http.Handler { return m1(m2(m3(final))) }
|
|
|
|
MiddlewaresChain(LoggingMiddleware)
|
|
= func(next http.Handler) http.Handler { return LoggingMiddleware(final http.Handler) }
|
|
*/
|
|
func MiddlewaresChain(middlewares ...Middleware) Middleware {
|
|
return func(final http.Handler) http.Handler {
|
|
for i := len(middlewares) - 1; i >= 0; i-- {
|
|
final = middlewares[i](final)
|
|
}
|
|
return final
|
|
}
|
|
}
|
|
|
|
func LoggingMiddleware(next http.Handler) http.Handler {
|
|
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
start := time.Now()
|
|
log.Printf("Started %s %s", r.Method, r.URL.Path)
|
|
|
|
next.ServeHTTP(w, r)
|
|
|
|
log.Printf("Completed %s in %v", r.URL.Path, time.Since(start))
|
|
})
|
|
}
|