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
|
package handlers
import (
"context"
"net/http"
)
type ContextHandler interface {
ServeHTTPContext(context.Context, http.ResponseWriter, *http.Request)
}
type ContextHandlerFunc func(context.Context, http.ResponseWriter, *http.Request)
func (f ContextHandlerFunc) ServeHTTPContext(ctx context.Context, w http.ResponseWriter, req *http.Request) {
f(ctx, w, req)
}
type ContextAdapter struct {
Ctx context.Context
Handler ContextHandler
}
func (ca *ContextAdapter) ServeHTTP(w http.ResponseWriter, req *http.Request) {
ca.Handler.ServeHTTPContext(ca.Ctx, w, req)
}
type key int
const (
stateKey key = iota
)
func With(h ContextHandler, st *State) ContextHandler {
return ContextHandlerFunc(func(ctx context.Context, w http.ResponseWriter, req *http.Request) {
ctx = context.WithValue(ctx, stateKey, st)
h.ServeHTTPContext(ctx, w, req)
})
}
|
