-
Notifications
You must be signed in to change notification settings - Fork 0
/
middleware.go
41 lines (34 loc) · 993 Bytes
/
middleware.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
package middleware
import (
"context"
"net/http"
)
type Handler func(ctx context.Context, req interface{}) (interface{}, error)
type Middleware func(Handler) Handler
func ComposeMiddleware(mws ...Middleware) Middleware {
return func(handler Handler) Handler {
for i := len(mws) - 1; i >= 0; i-- {
handler = mws[i](handler)
}
return handler
}
}
type HTTPMiddleware func(handler http.Handler) http.Handler
func ComposeHTTPMiddleware(handler http.Handler, mws ...HTTPMiddleware) http.Handler {
for i := len(mws) - 1; i >= 0; i-- {
handler = mws[i](handler)
}
return handler
}
func WrapMiddleware(mws ...Middleware) HTTPMiddleware {
middle := ComposeMiddleware(mws...)
return func(handler http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
next := func(ctx context.Context, req interface{}) (interface{}, error) {
handler.ServeHTTP(w, r)
return nil, nil
}
_, _ = middle(next)(r.Context(), r)
})
}
}