/*
MakeHandlerAPI executes f. A non nil bytes.Buffer is only
passed to f for GET requests. For GET request the response in
b is written to the client with gzipping.
When res.Code is not http.StatusOK the contents of res.Msg are written to w.
Surrogate-Control headers are also set for intermediate caches.
*/
func MakeHandlerAPI(f RequestHandler) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
t := mtrapp.Start()
var res *Result
switch r.Method {
case "GET":
b := bufferPool.Get().(*bytes.Buffer)
defer bufferPool.Put(b)
b.Reset()
res = f(r, w.Header(), b)
t.Stop()
WriteBytes(w, r, res, b, false)
default:
res = f(r, w.Header(), nil)
t.Stop()
Write(w, r, res)
}
t.Track(name(f) + "." + r.Method)
res.Count()
// log errors and slow 200s
if res.Code != http.StatusOK {
log.Printf("status: %d serving %s", res.Code, r.RequestURI)
} else if t.Taken() > 250 {
log.Printf("slow: took %d ms serving %s", t.Taken(), r.RequestURI)
}
}
}
/*
MakeHandler executes f and writes the response in b to the client
with gzipping and Surrogate-Control headers.
HTML error pages are written to the client when res.Code is not http.StatusOK.
*/
func MakeHandlerPage(f RequestHandler) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
t := mtrapp.Start()
b := bufferPool.Get().(*bytes.Buffer)
defer bufferPool.Put(b)
b.Reset()
res := f(r, w.Header(), b)
t.Stop()
WriteBytes(w, r, res, b, true)
t.Track(name(f) + "." + r.Method)
res.Count()
res.log(r)
if t.Taken() > 250 {
log.Printf("slow: took %d ms serving %s", t.Taken(), r.RequestURI)
}
}
}