mirror of
https://github.com/woodpecker-ci/woodpecker.git
synced 2024-11-18 16:01:05 +00:00
41 lines
926 B
Go
41 lines
926 B
Go
package fscache
|
|
|
|
import (
|
|
"io"
|
|
"net/http"
|
|
)
|
|
|
|
// Handler is a caching middle-ware for http Handlers.
|
|
// It responds to http requests via the passed http.Handler, and caches the response
|
|
// using the passed cache. The cache key for the request is the req.URL.String().
|
|
// Note: It does not cache http headers. It is more efficient to set them yourself.
|
|
func Handler(c Cache, h http.Handler) http.Handler {
|
|
return http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
|
|
url := req.URL.String()
|
|
r, w, err := c.Get(url)
|
|
if err != nil {
|
|
h.ServeHTTP(rw, req)
|
|
return
|
|
}
|
|
defer r.Close()
|
|
if w != nil {
|
|
go func() {
|
|
defer w.Close()
|
|
h.ServeHTTP(&respWrapper{
|
|
ResponseWriter: rw,
|
|
Writer: w,
|
|
}, req)
|
|
}()
|
|
}
|
|
io.Copy(rw, r)
|
|
})
|
|
}
|
|
|
|
type respWrapper struct {
|
|
http.ResponseWriter
|
|
io.Writer
|
|
}
|
|
|
|
func (r *respWrapper) Write(p []byte) (int, error) {
|
|
return r.Writer.Write(p)
|
|
}
|