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caddy/caddyhttp/requestid/requestid.go
Toby Allen 133ed18374 Create request_id directive #1590 (#1711)
* Create request_id directive #1590

* Address Comments

* Fix TestListenerAddrEqual

* requestid: Add some tests

* Address Comments by tobya

* Address Comments
2017-06-24 13:54:35 -07:00

34 lines
637 B
Go

package requestid
import (
"context"
"log"
"net/http"
"github.com/mholt/caddy/caddyhttp/httpserver"
uuid "github.com/nu7hatch/gouuid"
)
// Handler is a middleware handler
type Handler struct {
Next httpserver.Handler
}
func (h Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error) {
reqid := UUID()
c := context.WithValue(r.Context(), httpserver.RequestIDCtxKey, reqid)
r = r.WithContext(c)
return h.Next.ServeHTTP(w, r)
}
// UUID returns U4 UUID
func UUID() string {
u4, err := uuid.NewV4()
if err != nil {
log.Printf("[ERROR] generating request ID: %v", err)
return ""
}
return u4.String()
}