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| package goexperiments | |
| import ( | |
| "context" | |
| "net/http" | |
| ) | |
| type HandlerMiddleware interface { | |
| HandleHTTPC(ctx context.Context, rw http.ResponseWriter, req *http.Request, next http.Handler) | |
| } | |
| var function1 HandlerMiddleware = nil | |
| var function2 HandlerMiddleware = nil | |
| func makeChain(chain ...HandlerMiddleware) http.Handler {return nil} | |
| type AddUserID struct { | |
| OnUserID func(userID string) http.Handler | |
| } | |
| func (a *AddUserID) ServeHTTP(rw http.ResponseWriter, req *http.Request) { | |
| userID := req.Header.Get("userid") | |
| a.OnUserID(userID).ServeHTTP(rw, req) | |
| } | |
| type UseUserID struct { | |
| UserID string | |
| } | |
| func (u *UseUserID) ServeHTTP(rw http.ResponseWriter, req *http.Request) { | |
| rw.Write([]byte(u.UserID)) | |
| } | |
| type ServerNoAbuseContext struct{} | |
| func (s *ServerNoAbuseContext) ServeHTTP(rw http.ResponseWriter, req *http.Request) { | |
| req = req.WithContext(context.Background()) | |
| chainWithAuth := func(userID string) http.Handler { | |
| return makeChain(function1, function2, &UseUserID{ | |
| UserID: userID, | |
| }) | |
| } | |
| chainPartOne := &AddUserID{ | |
| OnUserID: chainWithAuth, | |
| } | |
| chainPartOne.ServeHTTP(rw, req) | |
| } |
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