forked from vulcand/vulcand
/
fallback.go
54 lines (45 loc) · 1.05 KB
/
fallback.go
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package cbreaker
import (
"fmt"
"net/http"
"net/url"
)
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.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)))
}