traefik/vendor/github.com/vulcand/oxy/cbreaker/fallback.go
2017-03-09 13:13:02 +01:00

56 lines
1.1 KiB
Go

package cbreaker
import (
"fmt"
"net/http"
"net/url"
"strconv"
)
type Response struct {
StatusCode int
ContentType string
Body []byte
}
type ResponseFallback struct {
r Response
}
func NewResponseFallback(r Response) (*ResponseFallback, error) {
if r.StatusCode == 0 {
return nil, fmt.Errorf("response code should not be 0")
}
return &ResponseFallback{r: r}, nil
}
func (f *ResponseFallback) ServeHTTP(w http.ResponseWriter, req *http.Request) {
if f.r.ContentType != "" {
w.Header().Set("Content-Type", f.r.ContentType)
}
w.Header().Set("Content-Length", strconv.Itoa(len(f.r.Body)))
w.WriteHeader(f.r.StatusCode)
w.Write(f.r.Body)
}
type Redirect struct {
URL string
}
type RedirectFallback struct {
u *url.URL
}
func NewRedirectFallback(r Redirect) (*RedirectFallback, error) {
u, err := url.ParseRequestURI(r.URL)
if err != nil {
return nil, err
}
return &RedirectFallback{u: u}, nil
}
func (f *RedirectFallback) ServeHTTP(w http.ResponseWriter, req *http.Request) {
w.Header().Set("Location", f.u.String())
w.WriteHeader(http.StatusFound)
w.Write([]byte(http.StatusText(http.StatusFound)))
}